- DOCK1-INHIBITING COMPOUND AND USE THEREOF
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Provided is a compound that is usable as an active ingredient of an anticancer agent. Preferably provided is a compound that has DOCK1-inhibiting activity and exerts an anticancer effect based on the activity. A compound represented by the following formula (A) or a salt thereof: wherein X represents a carbon atom or a nitrogen atom; Y represents an oxygen atom, a hydroxy group, or a hydrocarbon group; R1 and R2 are different, and each represents a hydrogen atom or a group represented by the following formula (A-1): (wherein R6 represents a pyrrolidino group or a phenyl group, and n2 is 0 or 1) ; R3 represents -CO-R7 (wherein R7 is an alkoxy group, an alkyl group, or an alkylamino group), a 1,3-oxazole group, an alkylhydroxy group, a hydrogen atom, or an oxygen atom; R4 represents a hydrogen atom, an oxygen atom, or a hydrocarbon group in which one or more hydrogen atoms may be replaced by one or more substituents; R5 represents a halogen atom, a halogenated alkyl group, or a halogenated alkylthio group; and n1 is an integer of 0 to 5; and
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Paragraph 0156; 0157
(2021/10/07)
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- Design of arylsulfonylhydrazones as potential fabh inhibitors: Synthesis, antimicrobial evaluation and molecular docking
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Background: Antimicrobial resistance is a persistent problem regarding infection treatment and calls for developing new antimicrobial agents. Inhibition of bacterial β-ketoacyl acyl carrier protein synthase III (FabH), which catalyzes the condensation reaction between a CoA-attached acetyl group and an ACP-attached malonyl group in bacteria is an interesting strategy to find new antibacterial agents. Objective: The aim of this work was to design and synthesize arylsulfonylhydrazones potentially FabH inhibitors and evaluate their antimicrobial activity. Methods: MIC50 values of sulfonylhydrazones against E. coli and S. aureus were determined. An-tioxidant activity was evaluated by DPPH (1-1’-diphenyl-2-picrylhydrazyl) assay and cytotoxicity against LL24 lung fibroblast cells was verified by MTT method. Principal component analysis (PCA) was performed in order to suggest a structure-activity relationship. Molecular docking allowed to propose sulfonylhydrazones interactions with FabH. Results: The most active compound showed activity against S. aureus and E. coli, with MIC50 = 0.21 and 0.44 μM, respectively. PCA studies correlated better activity to lipophilicity and molecular docking indicated that sulfonylhydrazone moiety is important to hydrogen-bond with FabH while methylcatechol ring performs π-π stacking interaction. The DPPH assay revealed that some sulfonylhydrazones derived from the methylcatechol series had antioxidant activity. None of the evaluated compounds was cytotoxic to human lung fibroblast cells, suggesting that the compounds might be considered safe at the tested concentration. Conclusion: Arylsufonylhydrazones is a promising scaffold to be explored for the design of new antimicrobial agents.
- Fernandes, Thais Batista,Segretti, Natanael Dante,Louren?o, Felipe Rebello,Candido, Thalita Marcílio,Baby, André Rolim,Barbosa, Euzébio Guimar?es,Parise-Filho, Roberto
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p. 474 - 484
(2021/03/26)
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- 5-HT2A AGONISTS FOR USE IN TREATMENT OF DEPRESSION
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The present invention relates to agonists of the 5-HT2A serotonin receptors and their medical uses. In one aspect the invention relates to 5-HT2A agonists of formula (I). In second aspect, the invention relates to selective 5-HT2A agonists of formula (II). In another aspect, the invention relates to mixed 5-HT2A/5-HT2C agonists of formula (III). In yet another aspect, the invention relates to 5-HT2A agonists for use in the treatment of a depressive disorder, more particular a 5-HT2A agonist for the use in the treatment of treatment-resistant depression.
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Paragraph 0435-0436
(2021/05/14)
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- Complementary Site-Selective Sulfonylation of Aromatic Amines by Superacid Activation
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Under superacidic conditions, aniline and indole derivatives are sulfonylated at low temperature with easy-to-access arenesulfonic acids or arenesulfonyl hydrazides. By modification of the functional-group directing effect through protonation, this method allows nonclassical site functionalization by overcoming the innate regioselectivity of electrophilic aromatic substitution. This superacid-mediated sulfonylation of arenes is complementary to existing methods and can be applied, through protection by protonation, to the late-stage site-selective functionalization of natural alkaloids and active pharmaceutical ingredients.
- Bourbon, Paul,Appert, Emeline,Martin-Mingot, Agnès,Michelet, Bastien,Thibaudeau, Sébastien
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supporting information
p. 4115 - 4120
(2021/06/21)
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- Palladium-Catalyzed Direct C-H Arylation of 3-Butenoic Acid Derivatives
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We report herein a direct method to synthesize 4-aryl-3-butenoic acid through a carboxylic-acid-directed oxidative Heck reaction. The various 4-aryl-3-butenoic acids are easily prepared in moderate to good yields. In view of the promising bioactivity of 4-phenyl-3-butenoic acid previously reported, its derivatives reported here may be bioactive.
- Yang, Shan,Liu, Lingling,Zhou, Zheng,Huang, Zhibin,Zhao, Yingsheng
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supporting information
p. 296 - 299
(2021/01/13)
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- Electrochemical heterodifunctionalization of α-CF3alkenes to access α-trifluoromethyl-β-sulfonyl tertiary alcohols
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An unprecedented electrochemical heterodifunctionalization of α-CF3alkenes with benzenesulfonyl hydrazides was accomplished in this work, wherein a β-sulfonyl and a α-hydroxyl group were simultaneously incorporated across the olefinic double bond in a single operation. Consequently, a series of potentially medicinally valuable and densely functionalized α-trifluoromethyl-β-sulfonyl tertiary alcohols were assembled under mild conditions. Electrochemically-driven oxidative 1,2-difunctionlization of electron-deficient alkenes well obviates the need for oxidizing reagents, thus rendering this protocol more eco-friendly.
- Chen, Kai,Duan, Xin-Yu,Gao, Jie,Guan, Jian-Ping,Liu, Fang,Xiang, Hao-Yue,Xiao, Jun-An,Yang, Hua,Ye, Zhi-Peng
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supporting information
p. 8969 - 8972
(2021/09/10)
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- Electrochemical fluorosulfonylation of styrenes
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An environmentally friendly and efficient electrochemical fluorosulfonylation of styrenes has been developed. With the use of sulfonylhydrazides and triethylamine trihydrofluoride, a diverse array of β-fluorosulfones could be readily obtained. This reaction features mild conditions and a broad substrate scope, which could also be conveniently extended to a gram-scale preparation.
- Jiang, Yi-Min,Wu, Shao-Fen,Yan, Hong,Ye, Ke-Yin,Yu, Yi,Yuan, Yaofeng
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supporting information
p. 11481 - 11484
(2021/11/16)
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- Dual Roles of Rongalite: Reductive Coupling Reaction to Construct Thiosulfonates Using Sulfonyl Hydrazides
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A tunable and practical transformation of structurally diverse sulfonyl hydrazides into thiosulfonates in the presence of Rongalite (NaHSO 2·CH 2O) was developed. Transition-metal-free conditions, operational simplicity, and readily available reagents are the striking features of this protocol. It is the first example for the synthesis of thiosulfonates using sulfonyl hydrazides with the assistance of reductant. Additionally, the mechanistic studies revealed that this transformation probably undergoes via a reducing-coupling pathway.
- Zhang, Guofu,Fan, Qiankun,Zhao, Yiyong,Wang, Huimin,Ding, Chengrong
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supporting information
p. 81 - 85
(2020/11/03)
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- Iodine-Mediated Coupling of Cyclic Amines with Sulfonyl Hydrazides: an Efficient Synthesis of Vinyl Sulfone Derivatives
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An efficient iodine-mediated coupling of cyclic amines with sulfonyl hydrazides is reported. This transformation opens a new route to the synthesis of vinyl sulfones derivatives, which is a common structural motif in natural products and pharmaceuticals. Tentative mechanistic studies suggest that this reaction is likely to involve a radical process.
- Rong, Xiaona,Guo, Jingwen,Hu, Zheqi,Huang, Lehao,Gu, Yugui,Cai, Yuepiao,Liang, Guang,Xia, Qinqin
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supporting information
p. 701 - 708
(2020/12/30)
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- NaHSO3-Mediated Direct Synthesis of Sulfinic Esters from Sulfonyl Hydrazides under Transition-Metal-Free Conditions
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We have developed a protocol for the NaHSO3-promoted esterification of sulfonyl hydrazides with alcohols for the synthesis of sulfinic esters. Various sulfonyl hydrazides could be converted to the corresponding sulfinic esters in good to high yields. The merits of this protocol include mild transition-metal-free reaction conditions, an inexpensive and available reagent, and operational simplicity. Controlled experiments reveal that this transformation probably undergoes via a radical pathway. (Figure presented.).
- Zhang, Guofu,Fan, Qiankun,Wang, Huimin,Zhao, Yiyong,Ding, Chengrong
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supporting information
p. 833 - 837
(2020/12/07)
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- Palladium-Catalyzed Asymmetric Hydrosulfonylation of 1,3-Dienes with Sulfonyl Hydrazides
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A highly enantio- and regioselective hydrosulfonylation of 1,3-dienes with sulfonyl hydrazides has been realized by using a palladium catalyst containing a monodentate chiral spiro phosphoramidite ligand. The reaction provided an efficient approach to synthetically useful chiral allylic sulfones. Mechanistic studies suggest that the reaction proceeds through the formation of an allyl hydrazine intermediate and subsequent rearrangement to the chiral allylic sulfone product. The transformation of the allyl hydrazine intermediate to the product is the enantioselectivity-determining step.
- Li, Ming-Ming,Cheng, Lei,Xiao, Li-Jun,Xie, Jian-Hua,Zhou, Qi-Lin
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supporting information
p. 2948 - 2951
(2020/12/15)
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- Photoredox/cobaloxime co-catalyzed allylation of amines and sulfonyl hydrazines with olefins to access α-allylic amines and allylic sulfones
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Herein, we reported a dual-catalytic platform for the allylation of amines and sulfonyl hydrazines with olefins to selectively access α-allylic amines and allylic sulfones in good yields by combining photoredox catalysis and cobaloxime catalysis. This strategy avoided the use of a stoichiometric amount of terminal oxidant and the use of pre-functionalized allylic precursors, representing a green and ideal atom- & step-economical process. Good substrate scope and gram-scale synthesis demonstrated the utility of this protocol. Mechanistic studies revealed that a radical process is probably involved in this reaction.
- Tong, Qing-Xiao,Xu, Hui,Zhang, Hong,Zhong, Jian-Ji
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supporting information
p. 8227 - 8231
(2021/10/12)
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- Synthesis of benzimidazole derivatives as potent inhibitors for α-amylase and their molecular docking study in management of type-II diabetes
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In the search of potent α-amylase inhibitors, we have synthesized seventeen derivatives of 2-mercaptobenzimidazole bearing sulfonamide (1–17) and evaluated for their α-amylase inhibitory potential. All synthesized compounds display a variable degree of α-amylase activity having IC50 values ranging between 0.90 ± 0.05 to 11.20 ± 0.30 μM when compared with the standard drug acarbose having IC50 value 1.70 ± 0.10 μM. Compound 1, 2, 11, 12 and 14 having IC50 values 1.40 ± 0.10, 1.30 ± 0.05, 0.90 ± 0.05, 1.60 ± 0.05 and 1.60 ± 0.10 μM respectively were found many folds better than the standard drug acarbose. While others derivatives of the series showed good inhibitory potentials. All the synthesized compounds were characterized by HREI-MS, 1H and 13C NMR spectroscopy. Structure activity relationship (SAR) has been established for all newly synthesized analogs. Binding interactions between ligands and active residues of the enzyme were confirmed through molecular docking study.
- Hussain, Shafqat,Taha, Muhammad,Rahim, Fazal,Hayat, Shawkat,Zaman, Khalid,Iqbal, Naveed,Selvaraj, Manikandan,Sajid, Muhammad,Bangesh, Masroor Ahmad,Khan, Fahad,Khan, Khalid Mohammed,Uddin, Nizam,Shah, Syed Adnan Ali,Ali, Muhammad
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- One-pot synthesis of sulfonylhydrazones from sulfonyl chloride, hydrazine hydrate and vinyl azide in water
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A facile and eco-friendly protocol for the synthesis of sulfonylhydrazones from sulfonyl chlorides, hydrazine hydrate and vinyl azides was developed. The unique advantage of this approach is that desired products can be obtained efficiently in water, which meets the requirements of green chemistry and provides good perspectives for the sustainable production of new drug candidate. Also, this reaction proceeded in moderate to good yields with a wide tolerance of functional groups.
- Luo, Mengqiang,Wang, Hai,Ren, Xiaorong,Lu, Ruijuan,Qi, Chenze,Zhang, Yaohong,Shen, Runpu
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p. 2713 - 2722
(2021/03/19)
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- Synthesis of symmetrical / unsymmetrical thiosulfonates through the disproportionate coupling reaction of sulfonyl hydrazide mediated by phosphomolybdic acid
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Phosphomolybdic acid (H3PMo12O40) is reported as a green low-cost catalyst for the synthesis of symmetrical / unsymmetrical thiosulfonates via the disproportionate coupling reaction of sulfonyl hydrazide. The attributes of this reported catalytic system include low catalyst loadings (1 mol%), efficient turnover, and high yields (up to 94%). Additionally, this reaction mechanism involves the formation of a thiyl radical and sulfonyl radical via sulfinyl radical disproportionation.
- Lv, Mengting,Liu, Yufeng,Li, Ke,Yang, Guoping
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supporting information
(2021/01/21)
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- Copper-Catalyzed Sulfonylation of Cyclobutanone Oxime Esters with Sulfonyl Hydrazides
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A copper-catalyzed radical cross-coupling of cyclobutanone oxime esters with sulfonyl hydrazides has been developed. The copper-based catalytic system proved crucial for cleavage of the C-C bond of cyclobutanone oximes and for selective C-S bond-formation involving persistent sulfonyl-metal radical intermediates. This protocol is distinguished by the low-cost catalytic system, which does not require ligand, base, or toxic cyanide salt, and by the use of readily accessible starting materials, as well as broad substrate scope, providing an efficient approach to various diversely substituted cyano-containing sulfones.
- Dong, Bingbing,Lu, Jiansha,Bao, Honghao,Zhang, Yuanyuan,Liu, Yingguo,Leng, Yuting
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supporting information
p. 3769 - 3776
(2021/07/14)
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- Small molecule-mediated induction of endoplasmic reticulum stress in cancer cells
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The endoplasmic reticulum (ER) is one of the crucial sub-cellular organelles controlling myriads of functions including protein biosynthesis, folding, misfolding and unfolding. As a result, dysregulation of these pathways in the ER is implicated in cancer development and progression. Subsequently, targeting the ER in cancer cells emerged as an interesting unorthodox strategy in next-generation anticancer therapy. However, development of small molecules to selectively target the ER for cancer therapy remained elusive and unexplored. To address this, herein, we have developed a novel small molecule library of sulfonylhydrazide-hydrazones through a short and concise chemical synthetic strategy. We identified a fluorescent small molecule that localized into the endoplasmic reticulum (ER) of HeLa cells, induced ER stress followed by triggering autophagy which was subsequently inhibited by chloroquine (autophagy inhibitor) to initiate apoptosis. This small molecule showed remarkable cancer cell killing efficacy in different cancer cells as mono and combination therapy with chloroquine, thus opening a new direction to illuminate ER-biology towards the development of novel anticancer therapeutics.
- Basu, Sudipta,Biswas, Ankur,Lahiri, Mayurika,Pandey, Shalini,Sharma, Virender Kumar
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supporting information
p. 1604 - 1611
(2021/10/23)
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- Acridine Orange Hemi(Zinc Chloride) Salt as a Lewis Acid-Photoredox Hybrid Catalyst for the Generation of α-Carbonyl Radicals
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A readily accessible organic-inorganic hybrid catalyst is reported for the reductive fragmentation of α-halocarbonyl compounds. The robust hybrid catalyst is a self-stabilizing combination of ZnCl2 Lewis acid and acridine orange as the photoactive organic dye. Mechanistic specifics of this hybrid catalyst have been studied in detail using both photophysical and electrochemical experiments. A systematic study enabled the discovery of the appropriate Lewis acid for the effective LUMO stabilization of α-halocarbonyl compounds and thereby lowering of reduction potential within the range of a standard organic dye. This strategy resolves the issues like dehalogenative hydrogenation or homo-coupling of alkyl radicals by guiding the photoredox cycle through an oxidative quenching pathway. The cooperativity between the photoactive organic dye and the Lewis acid counterparts empowers functionalization with a wide range of coupling partners through efficient and controlled generation of alkyl radicals and serves as an appropriate alternative to the expensive late transition metal-based photocatalysts. To demonstrate the application potential of this cooperative catalytic system, four different synthetic transformations of α-carbonyl bromides were explored with broad substrate scopes.
- Das, Sanju,De Sarkar, Suman,Mandal, Tanumoy
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supporting information
(2021/12/10)
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- Heterogeneous copper-catalyzed synthesis of diaryl sulfones
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A carbon-supported copper nanoparticle (Cu-NP) with high catalytic activity for the synthesis of diaryl sulfones is reported. For the first time, this Cu-NP is proved to be able to effectively promote the reaction of arylboronic acids and arylsulfonyl hydrazides to generate diaryl sulfones at room temperature. The reaction shows excellent substrate universality, and substrates with different substituents can undergo the reaction smoothly, leading to the desired products in good yields. The Cu-NP is found to be made of low valence Cu based on XRD. Hence, the reaction catalyzed by the Cu-NP is believed to involve a Cu-mediated organometallic cycle.
- Gong, Xinchi,Qu, Lingling,Shen, Zhengqi,Wang, Ganghu,Zhu, Chunyin
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supporting information
p. 10662 - 10668
(2021/12/27)
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- Discovery of sulfonyl hydrazone derivative as a new selective PDE4A and PDE4D inhibitor by lead-optimization approach on the prototype LASSBio-448: In vitro and in vivo preclinical studies
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Phosphodiesterase 4 (PDE4) inhibitors have emerged as a new strategy to treat asthma and other lung inflammatory diseases. Searching for new PDE4 inhibitors, we previously reported the discover of LASSBio-448, a sulfonamide with potential to prevent and reverse pivotal pathological features of asthma. In this paper, two novel series of sulfonamide (6a-6m) and sulfonyl hydrazone (7a-7j) analogues of LASSBio-448 have been synthetized and evaluated for selective inhibitory activity toward cAMP-specific PDE4 isoforms. From these studies, we have identified 7j (LASSBio-1632) as a new anti-asthmatic lead-candidate associated with selective inhibition of PDE4A and PDE4D isoenzymes and blockade of airway hyper-reactivity (AHR) and TNF-α production in the lung tissue. In addition, it was able to relax guinea pig trachea on non-sensitized and sensitized animals and showed great TGI permeability.
- Nunes, Isabelle Karine da Costa,de Souza, Everton Tenório,Martins, Italo Rossi Roseno,Barbosa, Gisele,Moraes Junior, Manoel Oliveira de,Medeiros, Millena de Melo,Silva, Sheyla Welma Duarte,Balliano, Tatiane Luciano,da Silva, Bagnólia Araújo,Silva, Patrícia Machado Rodrigues,Carvalho, Vinicius de Frias,Martins, Marco Aurélio,Lima, Lidia Moreira
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- Electrochemical Annulation-Iodosulfonylation of 1,5-Enyne-containing para-Quinone Methides (p-QMs) to Access (E)-Spiroindenes
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A new electrochemical three-component annulation-iodosulfonylation of 1,5-enyne-containing para-quinone methides (p-QMs) has been established by using available arylsulfonyl hydrazides and potassium iodide under environmentally benign conditions. The electrosynthesis offers sustainable and efficient access to construct spirocyclohexadienone-containing (E)-indenes without any additional catalyst or oxidant through a sulfonyl-radical-triggered 1,6-addition and an I+-mediated ipso-cyclization cascade. Notably, potassium iodide plays the triple role of an electrolyte, a redox catalyst, as well as an iodination reagent.
- Zuo, Hang-Dong,Zuo, Hang-Dong,Hao, Wen-Juan,Zhu, Chi-Fan,Zhu, Chi-Fan,Guo, Cheng,Tu, Shu-Jiang,Jiang, Bo
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supporting information
p. 4471 - 4477
(2020/06/04)
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- Synthesis, biological activities, and 3D-QSAR studies of (R)-2-phenyl-4,5-dihydrothiazole-4-carboxamide derivatives containing a sulfonohydrazide moiety
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To discover a novel lead structure for antiphytopathogenic fungus agent, a series of (R)-2-phenyl-4,5-dihydrothiazole-4-carboxamide derivatives containing a sulfonohydrazide moiety were designed and synthesized. They were determined by melting points, 1H NMR, 13C NMR, and elemental analysis (EA). The biological activity results revealed that these title compounds possessed antifungal and insecticidal activities. Some title compounds against Alternaria solani, Physalospora piricola, Cercospora arachidicola, Phytophthora capsici, Fusarium graminearum, and Sclerotinia sclerotiorum displayed moderate to good antifungal activities at 50 mg/L, especially, compounds 6b and 6p displayed good and broad-spectrum antifungal activities. The structure activity relationships were discussed. A 3D-QSAR model was established based on the antifungal activity against Phytophthora capsici, indicating that electrostatic and hydrophobic fields were the two most significant factors for antifungal activity. Hence, structure optimization based on the CoMSIA model was performed to find compound 6p with excellent activity against Phytophthora capsici, and the EC50 values of compound 6p were comparable to those of chlorothalonil. Furthermore, the insecticidal activity of compound 6p against Culex pipiens larvae at 1 mg/L was considerable to that of chlorantraniliprole. Therefore, compound 6p can be used as a novel lead structure for antiphytopathogenic fungus and insecticidal agent development.
- Li, Fengyun,Li, Yuxin,Li, Zhengming,Liu, Jingbo,Wang, Yuanhong,Zhang, Haoxuan
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- Synthesis, in vitro α-amylase inhibitory, and radicals (DPPH & ABTS) scavenging potentials of new N-sulfonohydrazide substituted indazoles
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Over-expression of α-amylase enzyme causes hyperglycemia which lead to many physiological complications including oxidative stress, one of the most commonly associated problem with diabetes mellitus. Marketed α-amylase inhibitors such as acarbose, voglibose, and miglitol used to treat type-II diabetes mellitus, but also linked to several harmful effects. Therefore, it is essential to explore new and nontoxic antidiabetic agents with additional antioxidant properties. In this connection, a series of new N-sulfonohydrazide substituted indazoles 1–19 were synthesized by multistep reaction scheme and assessed for in vitro α-amylase inhibitory and radical (DPPH and ABTS) scavenging properties. All compounds were fully characterized by different spectroscopic techniques including 1H, 13C NMR, EI-MS, HREI-MS, ESI-MS, and HRESI-MS. Compounds showed promising α-amylase inhibitory activities (IC50 = 1.23 ± 0.06–4.5 ± 0.03 μM) as compared to the standard acarbose (IC50 1.20 ± 0.09 μM). In addition to that all derivatives were found good to moderate scavengers of DPPH (IC50 2.01 ± 0.13–5.3 ± 0.11) and ABTS (IC50 = 2.34 ± 0.07–5.5 ± 0.07 μM) radicals, in comparison with standard ascorbic acid having scavenging activities with IC50 = 1.99 ± 0.09 μM, and IC50 2.03 ± 0.11 μM for DPPH and ABTS radicals. In silico molecular docking study was conducted to rationalize the binding interaction of α-amylase enzyme with ligands. Compounds were observed as mixed type inhibitors in enzyme kinetic characterization.
- Rafique, Rafaila,Khan, Khalid Mohammed,Arshia,Chigurupati, Sridevi,Wadood, Abdul,Rehman, Ashfaq Ur,Salar, Uzma,Venugopal, Vijayan,Shamim, Shahbaz,Taha, Muhammad,Perveen, Shahnaz
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- TBAB-catalyzed 1,6-conjugate sulfonylation of paraquinone methides: A highly efficient approach to unsymmetrical gem-diarylmethyl sulfones in water ?
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A highly efficient sulfonylation of para-quinone methides with sulfonyl hydrazines in water has been developed on the basis of the mode involving a tetrabutyl ammonium bromide (TBAB)-promoted sulfa-1,6-conjugated addition pathway. This reaction provides a green and sustainable method to synthesize various unsymmetrical diarylmethyl sulfones, showing good functional group tolerance, scalability, and regioselectivity. Further transformation of the resulting diarylmethyl sulfones provides an efficient route to some functionalized molecules.
- Liu, Zhang-Qin,You, Peng-Sheng,Zhang, Liang-Dong,Liu, Da-Qing,Liu, Sheng-Shu,Guan, Xiao-Yu
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supporting information
(2020/02/11)
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- Electrochemically Induced Synthesis of Sulfonylated N-Unsubstituted Enamines from Vinyl Azides and Sulfonyl Hydrazides
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Sulfonylated N-unsubstituted enamines were synthesized through a chain of chemical and electrochemical transformations via sulfonylation of vinyl azides. The disclosing of the N-unsubstituted enamines synthesis was based on a unique property of the azido group, which is its ability to eliminate the N2 molecule. Furthermore, a formal paradox is observed: A double bond reacts and a double bond is retained. Electrosynthesis proceeded in an undivided cell equipped with a graphite anode and a stainless steel cathode; NH4I was used as a supporting electrolyte.
- Mulina, Olga M.,Zhironkina, Nataliya V.,Paveliev, Stanislav A.,Demchuk, Dmitry V.,Terent'Ev, Alexander O.
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supporting information
p. 1818 - 1824
(2020/03/04)
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- Designing heterocyclic chalcones, benzoyl/sulfonyl hydrazones: An insight into their biological activities and molecular docking study
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The aim of this study is to investigate the antioxidant, anticholinesterase and the antiproliferative activities of some chalcones, benzoyl and sulfonyl hydrazones. The antioxidant activity was studied by way of four complimentary assays and the anticholinesterase activity was studied using the Ellman method. The antiproliferative activity of the compounds was determined using a BrdU cell proliferation ELISA assay. Compound 32 (IC50: 15.58 ± 0.01 μg/mL) against the brain (C6) and 29 (IC50: 5.02 ± 0.05 μg/mL) against cervical (HeLa) cancer cell lines exhibited higher antiproliferative activity than the other compounds. Two sulfonyl hydrazone derivatives 45 and 47 exhibited very good antioxidant activity. The results of anticholinesterase activity indicated that nine compounds 3, 8, 10, 14, 24, 25, 27, 38, and 45 significantly inhibited acetylcholinesterase enzymes and thirty-three compounds 1–4, 7–14, 22–28, 32–41, 44–47 inhibited butyrylcholinesterase enzymes (BChE) more than galantamine. In addition, virtual screening methods based on ligand 45 having the best activity against BChE was used to define new human BChE inhibitors. The interactions of ligand 8 against acetylcholinesterase (AChE) were also examined. Important key residues were determined and visualized on completion of the methodology. All calculations indicated the suitability of use of the molecular docking approach for understanding interaction mechanisms and crucial fragments of novel hit compounds such as the potential lead AChE and BChE inhibitor candidates.
- ?ztürk, Mehmet,Demirta?, Ibrahim,Iyido?an, Ay?egül Karakü?ük,Kur?un Aktar, Bedriye Seda,Oru?-Emre, Emine El?in,S?cak, Yusuf,Tok, Tu?ba Ta?k?n,Ya?l?o?lu, Ayse ?ahin
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- The synthesis of sulfonated 4: H -3,1-benzoxazines via an electro-chemical radical cascade cyclization
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A new route for the synthesis of sulfonated 4H-3,1-benzoxazines has been accomplished by electrochemical radical cascade cyclizations of styrenyl amides with sulfonylhydrazines. This process demonstrates a wide substrate scope with diverse functional group compatibility under metal- and external oxidant-free conditions at ambient temperature.
- He, Tian-Jun,Huang, Jing-Mei,Zhong, Wei-Qiang
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supporting information
p. 2735 - 2738
(2020/03/17)
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- A general and practical sulfonylation of benzylic ammonium salts with sulfonyl hydrazides for the synthesis of sulfones
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A practical and efficient approach adopting transition-metal-free cross-coupling of sulfonyl hydrazides with benzyl ammonium salts has been developed to synthesize benzyl sulfones using Cs2CO3 as base under mild conditions. The protocol employs stable and easy to handle coupling partners, and is endowed with good substrate compatibility, leading to functional benzyl sulfones in good yields.
- Zhu, Haibo,Zhang, Yingying,Liu, Yishuai,Yang, Liu,Xie, Zongbo,Jiang, Guofang,Le, Zhang-Gao
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supporting information
(2020/05/06)
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- CuCl2-promoted decomposition of sulfonyl hydrazides for the synthesis of thiosulfonates
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Sulfonyl hydrazides recently received much attention as reagents for the introduction of sulfur-containing functional groups into organic compounds, because both sulfonyl and sulfenyl sources could be generated by the oxidation and decomposition of the sulfonyl hydrazides, respectively. However, the transformations of sulfonyl hydrazides into thiosulfonates, which could be produced by the reaction between sulfonyl and sulfenyl sources, have been less investigated. In this manuscript, we describe CuCl2-promoted selective synthesis of thiosulfonates from sulfonyl hydrazides. A variety of thiosulfonates were produced in moderate to good yields. The mechanism involving radical intermediates such as sulfonyl radical and thiyl radical was proposed on the basis of the previously reported references and mechanistic investigations. In addition, quantum chemical simulations revealed that Cu-promoted decomposition of sulfonyl hydrazides is thermodynamically viable in the developed conditions.
- Kim, Junsu,Park, Sanggil,Kim, Hyungjun,Kim, Jinho
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supporting information
(2020/07/02)
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- An Alternative Metal-Free Aerobic Oxidative Cross-Dehydrogenative Coupling of Sulfonyl Hydrazides with Secondary Phosphine Oxides
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An alternative metal-free, efficient and practical approach for the preparation of phosphinothioates is established via the aerobic oxidative cross-dehydrogenative coupling (CDC) of sulfonyl hydrazides with secondary phosphine oxides catalyzed by tetrabutylammonium iodide (TBAI) in the presence of atmospheric oxygen. The strategy provides an array of diverse phosphinothioates in good to excellent yields. Furthermore, two representative bioactive molecules are synthesized on up to gram scale by utilizing this method.
- Cheng, Feixiang,Liu, Jianjun,Liu, Teng,Yu, Rong,Zhang, Yanqiong
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p. 253 - 262
(2019/12/28)
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- Metal-Free Electrochemical Coupling of Vinyl Azides: Synthesis of Phenanthridines and β-Ketosulfones
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We reported an efficient and environmentally benign electrochemical synthesis of phenanthridines by oxidative coupling of vinyl azides with sodium azide or benzenesulfonyl hydrazides, for the first time. The reaction conditions are mild, and no additional metal-catalyst or exogenous oxidants are needed. The protocol has broad substrate scope and high functional group tolerance. Furthermore, this green electrochemical procedure can be readily extended to the synthesis of β-ketosulfones. Gram scale reactions further demonstrate the practicability.
- Chen, Qianjin,Kong, Xianqiang,Li, Guodong,Liang, Qi,Lin, Long,Xu, Bo,Yu, Ke
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supporting information
p. 6135 - 6145
(2020/10/06)
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- One-pot synthesis of β-ketosulfones from sulfonyl chloride, hydrazine hydrate and vinyl azide in water
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A novel, facile and efficient strategy for the one-pot synthesis of β-ketosulfones from readily available sulfonyl chloride, hydrazine hydrate and vinyl azides is described. The reaction proceeded very smoothly affording diverse β-ketosulfones in moderate to good yields. This new procedure has the advantages of environmental benign, easy and simple operation, low cost and wide tolerance of functional groups, which provides a highly fascinating protocol to access β-ketosulfones.
- Zhang, Yaohong,Luo, Mengqiang,Li, Yan,Shen, Runfu,Qi, Chenze,Wang, Hai,Cheng, Kai
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supporting information
(2020/10/26)
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- Electrochemical Coupling of Arylsulfonyl Hydrazides and Tertiary Amines for the Synthesis of β-Amidovinyl Sulfones
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The reaction of arylsulfonyl hydrazides with tertiary amines provided β-amidovinyl sulfones in good yields under mild electrochemical conditions. The reactions were carried out using an acid, in a solution of nBu4NBF4 in dimethyl sulfoxide in undivided cells with graphite-platinum electrodes under a constant current. The arylsulfonyl hydrazides and tertiary amines were activated via a radical process by electrochemical oxidation and reacted to give the desired β-amidovinyl sulfones.
- Kim, Han-Sung,Lee, Sunwoo
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supporting information
p. 6951 - 6955
(2019/11/13)
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- MYST FAMILY HISTONE ACETYLTRANSFERASE INHIBITORS
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The present disclosure provides compounds, pharmaceutically acceptable compositions thereof, and methods of using the same.
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Paragraph 0328-0331; 0327
(2019/06/19)
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- TBN-mediated regio- and stereoselective sulfonylation & oximation (oximosulfonylation) of alkynes with sulfonyl hydrazines in EtOH/H2O
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An alkyne difunctionalization cascade reaction was developed to generate α-sulfonylethanone oximes under metal-free conditions. The reaction features environmentally benign EtOH/H2O as a solvent, a broad substrate scope and easily scaled up for gram-scale synthesis. The reaction mechanism was illustrated with UPLC, GC-MS and UPLC-tof/MS.
- Wang, Bin,Yan, Zicong,Liu, Liyan,Wang, Jiawei,Zha, Zhenggen,Wang, Zhiyong
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supporting information
p. 205 - 212
(2019/01/28)
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- Synthesis of 3,4-Dihydrobenzo[f]phthalazines via Iodine/tert-Butyl Hydroperoxide-Mediated Annulation Cascade of Yne-Allenones
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An iodine (I2)/tert-butyl hydroperoxide (TBHP)-mediated annulation cascade between yne-allenones and sulfonyl hydrazides has been established, in which a wide set of dihydrobenzo[f]phthalazines were synthesized through one-pot, two-step strategy under metal-free conditions. The synthetic utility of these transformations leads to subsequent C?C and C?N bond-forming reactions to effectively build up functional aza-heterocycle with potential significance. (Figure presented.).
- Fu, Rong,Li, Meng-Fan,Zhou, Peng,Hao, Wen-Juan,Tu, Shu-Jiang,Jiang, Bo
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supporting information
p. 2280 - 2285
(2019/04/13)
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- Palladium-Catalyzed Regio- and Stereoselective Sulfonylation of Aryl Propiolates with Sulfonyl Hydrazides: Access to (E)-β-Aryl Sulfonyl Acrylates
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An efficient method for the synthesis of (E)-β-aryl sulfonyl acrylates has been reported. This palladium-catalyzed approach showed excellent regio- and stereoselectivity in the sulfonylation of aryl propiolates with sulfonyl hydrazides. Through this approach, a wide range of (E)-β-aryl sulfonyl acrylates were obtained in moderate to high yields. (Figure presented.).
- Jiang, Huanfeng,Yan, Wuxin,Huang, Jiuzhong,Tan, Chaowei,Zhan, Lingzhi,Wu, Wanqing
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supporting information
p. 4575 - 4580
(2019/09/16)
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- Arylsulfonylhydrazone induced apoptosis in MDA-MB-231 breast cancer cells
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Background: Breast cancer is the most frequent cancer among women. Chemotherapy is necessary for treating metastatic disease and represents an important therapeutic approach, although antineoplastic drugs have high toxicity and may be limited by the development of drug resistance. These problems impose an urgent need to discover new anticancer agents and, so, arylsulfonylhydrazone analogues were designed, synthesized, and evaluated with regard to their cytotoxic activity against breast cancer cells in order to identify novel potential antitumor agents. Methods: Synthesis was performed as previously described by Fernandes and co-workers. Cytotoxicity of sulfonylhydrazones against MDA-MB-231, MCF-7 and 3T3 cells was evaluated by MTT method. Apoptotic effects was verified by Annexin-V/PI assay, Hoechst stain and propidium iodide stain. Molecular modeling was executed using Spartan’10 version 1.1.0. Geometry optimization was performed by the MMFF, PM6 and Hartree-Fock 3-31G* methods and electronic and lipophilic properties were computed. Results: Thirteen analogues were synthesized, which 3f and 4f were cytotoxic against evaluated breast cancer cells. The most promising compound, 3f, showed IC50 values equal to 104.6 and 142.4 μM for MDA-MB-231 and MCF-7, respectively. 3f induced apoptosis, causing phosphatidylserine externalization, pyknosis, and cell cycle arrest in the G0/G1 phase in MDA-MB-231 breast cancer cells. Furthermore, 3f was selective for tumor cells when compared to 3T3 fibroblasts. Structure-activity relationship suggests that introduction of a benzodioxol group increased cytotoxicity and superior lipophilicity may be related to superior activity. Conclusion: Sulfonylhydrazone analogues presented good activity against breast cancer cells by inducing apoptosis and might be a promising scaffold to further molecular modifications persuing more effective antitumoral agents.
- Fernandes, Thais Batista,de Azevedo, Ricardo Alexandre,Yang, Rosania,Teixeira, Sarah Fernandes,Trossini, Gustavo Henrique Goulart,Barbuto, José Alexandre Marzag?o,Ferreira, Adilson Kleber,Parise-Filho, Roberto
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p. 1288 - 1298
(2018/11/01)
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- Palladium-Catalyzed Regio- and Stereoselective Coupling-Addition of Propiolates with Arylsulfonyl Hydrazides: A Pattern for Difunctionalization of Alkynes
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A new pattern for difunctionalization of alkynes via a palladium-catalyzed regio- and stereoselective coupling-addition of propiolates with arylsulfonyl hydrazides is disclosed. The approach enables the synthesis of various highly functionalized (E)-vinylsulfones in satisfactory yields. Arylsulfonyl hydrazides act as both aryl and sulfonyl sources via selective cleavage of Ar(C)-S and S-N bonds, which are simultaneously incorporated onto the terminal carbon atom of an alkyne molecule.
- Liu, Lixin,Sun, Kang,Su, Lebin,Dong, Jianyu,Cheng, Lei,Zhu, Xiaodong,Au, Chak-Tong,Zhou, Yongbo,Yin, Shuang-Feng
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supporting information
p. 4023 - 4027
(2018/07/15)
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- Copper-mediated sulfonylation of aryl iodides and bromides with arylsulfonyl hydrazides in PEG-400
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Sulfonylation using stable and readily available arylsulfonyl hydrazides and aryl iodides or bromides mediated by cupric acetate has been achieved. Using polyethylene glycol (PEG-400) as an eco-friendly medium, the coupling reaction could afford a series of unsymmetrical diaryl sulfones in moderate to good yields without the presence of additional ligands and base.
- Wu, Xiangmei,Wang, Yan
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supporting information
p. 10953 - 10957
(2018/07/06)
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- Exogenous-oxidant-free electrochemical oxidative C-H sulfonylation of arenes/heteroarenes with hydrogen evolution
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An efficient and environmentally benign electrochemical oxidative radical C-H sulfonylation of arenes/heteroarenes was developed in this work. A series of significant diarylsulfones were prepared under mild catalyst- and exogenous-oxidant-free reaction conditions, which efficiently avoid the issues of desulfonylation or over-reduction of sulfonyl groups.
- Yuan, Yong,Yu, Yi,Qiao, Jin,Liu, Pan,Yu, Banying,Zhang, Wukun,Liu, Huilin,He, Min,Huang, Zhiliang,Lei, Aiwen
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supporting information
p. 11471 - 11474
(2018/10/20)
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- Copper-Catalyzed Radical Cascade Cyclization to Access 3-Sulfonated Indenones with the AIE Phenomenon
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An efficient copper-catalyzed radical cascade cyclization strategy was developed, by which a wide variety of 3-sulfonyl substituted indenones were prepared in one pot via reaction of 2-alkynylbenzonitriles with sulfonyl hydrazides in the presence of TBHP and CuI under mild reaction conditions. Much more importantly, the 3-sulfonyl indenones, synthesized through our newly developed copper-catalyzed radical cascade cyclization strategy, were found to own typical aggregation-induced emission (AIE) properties, showing orange to red emission with large Stokes shift (more than 135 nm). In addition, such newly found AIEgens could be successfully used in live cell imaging, exhibiting excellent biocompatibility and application potential.
- Sun, Kai,Chen, Xiao-Lan,Li, Shi-Jun,Wei, Dong-Hui,Liu, Xiao-Ceng,Zhang, Yin-Li,Liu, Yan,Fan, Lu-Lu,Qu, Ling-Bo,Yu, Bing,Li, Kai,Sun, Yuan-Qiang,Zhao, Yu-Fen
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p. 14419 - 14430
(2018/11/23)
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- Diversity-Orientated Stereoselective Synthesis through Pd-Catalyzed Switchable Decarboxylative C?N/C?S Bond Formation in Allylic Surrogates
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Switchable catalytic transformation of reactants can be a powerful approach towards diversity-orientated synthesis from easily available molecular synthons. Herein, an endogenous ligand-controlled, Pd-catalyzed allylic substitution allowing for either selective C?N or C?S bond formation using vinylethylene carbonates (VECs) and N-sulfonylhydrazones as coupling partners has been developed. This versatile methodology provides a facile, divergent route for the highly chemo- and stereoselective synthesis of functional allylic sulfones or sulfonohydrazides. The newly developed protocol features wide substrate scope (nearly 80 examples), broad functional group tolerance, and potential for the late-stage functionalization of bioactive compounds. The isolation and crystallographic analysis of a catalytically competent π-allyl Pd complex suggests that the pathway leading to the allylic products proceeds through a different manifold as previously proposed for the functionalization of VECs with nucleophiles.
- Deng, Lei,Kleij, Arjan W.,Yang, Weibo
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supporting information
p. 19156 - 19161
(2018/11/30)
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- Electrosynthesis of vinyl sulfones from alkenes and sulfonyl hydrazides mediated by KI: Аn electrochemical mechanistic study
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A variety of vinyl sulfones were prepared from alkenes and sulfonyl hydrazides via electrochemical oxidative sulfonylation. The reaction proceeds in an experimentally convenient undivided electrochemical cell equipped with graphite and iron electrodes employing KI as a redox catalyst and a supporting electrolyte. Applying extremely high current density up to 270 mA/cm2 permits rapid synthesis in a compact reactor and with small surface area electrodes. A possible reaction mechanism was proposed with the use of cyclic voltammetry. It is the combination of anodic and cathodic processes in this reaction that makes it possible to obtain products under mild conditions with yields from moderate to high.
- Terent'ev, Alexander O.,Mulina, Olga M.,Pirgach, Dmitry A.,Ilovaisky, Alexey I.,Syroeshkin, Mikhail A.,Kapustina, Nadezhda I.,Nikishin, Gennady I.
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supporting information
p. 6871 - 6879
(2017/11/06)
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- Synthesis, Molecular Modeling, and Evaluation of Novel Sulfonylhydrazones as Acetylcholinesterase Inhibitors for Alzheimer's Disease
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Alzheimer's disease (AD) is the most common type of dementia and related to the degeneration of hippocampal cholinergic neurons, which dramatically affects cognitive ability. Acetylcholinesterase (AChE) inhibitors are employed as drugs for AD therapy. Three series of sulfonylhydrazone compounds were designed, and their ability to inhibit AChE was evaluated. Fifteen compounds were synthesized and twelve of them had IC50 values of 0.64–51.09 μM. The preliminary structure–activity relationships indicated that the methylcatechol moiety and arylsulfonyl substituents generated better compounds than both the benzodioxole and alkylsulfonyl chains. Molecular dynamics studies of compound 6d showed that the interaction with the peripheral binding site of AChE was similar to donepezil, which may explain its low IC50 (0.64 μM). Furthermore, the drug-likeness of 6d suggests that the compound may have appropriate oral absorption and brain penetration. Compound 6d also presented antiradical activity and was not cytotoxic to LL24 cells, suggesting that this compound might be considered safe. Our findings indicate that arylsulfonylhydrazones may be a promising scaffold for the design of new drug candidates for the treatment of AD.
- Fernandes, Thais B.,Cunha, Micael R.,Sakata, Renata P.,Candido, Thalita M.,Baby, André R.,Tavares, Maurício T.,Barbosa, Euzébio G.,Almeida, Wanda P.,Parise-Filho, Roberto
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- Copper-catalyzed: S -methylation of sulfonyl hydrazides with TBHP for the synthesis of methyl sulfones in water
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A copper-catalyzed S-methylation of sulfonyl hydrazides with TBHP was efficiently developed, providing a variety of methyl sulfones with good to excellent yields. The reaction can be carried out in water smoothly without any ligand or additive under mild conditions and this catalyst-in-water can be recycled several times.
- Yang, Yu,Bao, Yajie,Guan, Qianqian,Sun, Qi,Zha, Zhenggen,Wang, Zhiyong
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supporting information
p. 112 - 116
(2017/08/15)
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- Base-mediated tandem sulfonylation and oximation of alkenes in water
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A base-mediated bifunctionalization of alkenes for the synthesis of α-sulfonylethanone oximes was developed in water under metal-free conditions. This reaction features a wide substrate scope and facile starting materials to afford the desired products in high yields.
- Wang, Bin,Tang, Lin,Liu, Liyan,Li, Yanan,Yang, Yu,Wang, Zhiyong
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supporting information
p. 5794 - 5799
(2017/12/26)
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- Gold-Catalyzed Dehydrazinative C(sp)–S Coupling Reactions of Arylsulfonyl Hydrazides with Ethynylbenziodoxolones for Accessing Alkynyl Sulfones
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A gold(III)-catalyzed dehydrazinative coupling reaction between arylsulfonyl hydrazides and ethynylbenziodoxolone reagents was realized for the synthesis of alkynyl sulfones. The scope and versatility of the reaction were demonstrated by the efficient synthesis of 23 derivatives with diverse structural features.
- Shinde, Popat S.,Patil, Nitin T.
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p. 3512 - 3515
(2017/07/04)
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- Palladium-Catalyzed Desulfitative Cross-Coupling of Arylsulfonyl Hydrazides with Terminal Alkynes: A General Approach toward Functionalized Internal Alkynes
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A palladium-catalyzed Sonogashira-type coupling between arylsulfonyl hydrazides and terminal alkynes via Ar(C)-S bond cleavage is disclosed, which enables the general synthesis of functionalized internal alkynes, especially the Br-substituted ones, in good to excellent yields under acid- and base-free conditions.
- Qian, Liang-Wei,Sun, Mengli,Dong, Jianyu,Xu, Qing,Zhou, Yongbo,Yin, Shuang-Feng
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p. 6764 - 6769
(2017/07/15)
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- Catalyst-free synthesis of 3-sulfone nitrile from sulfonyl hydrazides and acrylonitrile in water
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A novel catalyst-free sulfonation reaction for synthesizing 3-sulfone nitrile compounds from sulfonyl hydrazides and acrylonitriles in water, without any metal catalyst, ligand or organic solvent, was demonstrated. This catalyst-free protocol provides a new synthetic method for the construction of 3-sulfone nitrile compounds with excellent yields. The D2O experiment adequately proved that the catalyst-free sulfonation reaction occurs via a Michael addition mechanism and that the hydrogen of 3-sulfone nitrile comes from water.
- Li, Wei,Gao, Lingfeng,Zhuge, Wenyun,Sun, Xu,Zheng, Gengxiu
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supporting information
p. 7819 - 7823
(2017/10/06)
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