- Constructing the 2-(thiobenzyl)ethyl carbamate linker via thiyl radical addition
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N-Vinyloxycarbonyl derivatives of secondary amines undergo efficient addition of thiyl radical and, using Merrifield SH resin, this reaction provides a new entry to resin-bound 2-(thiobenzyl)ethyl carbamates. (C) 2000 Elsevier Science Ltd.
- Timár, Zoltán,Gallagher, Timothy
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Read Online
- Efficient Synthesis of Benzothiazinone Analogues with Activity against Intracellular Mycobacterium tuberculosis
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8-Nitrobenzothiazinones (BTZs) are a promising class of antimycobacterial agents currently under investigation in clinical trials. Starting from thiourea derivatives, a new synthetic pathway to BTZs was established. It allows the formation of the thiazinone ring system in one synthetic step and is applicable for preparation of a wide variety of BTZ analogues. The synthetic procedure furthermore facilitates the replacement of the sulphur atom in the thiazinone ring system by oxygen or nitrogen to afford the analogous benzoxazinone and quinazolinone systems. 36 BTZ analogues were prepared and tested in luminescence-based assays for in vitro activity against Mycobacterium tuberculosis (Mtb) using the microdilution broth method and a high-throughput macrophage infection assay.
- Av-Gay, Yossef,Imming, Peter,Narula, Gagandeep,Richter, Adrian,Rudolph, Ines,Wagner, Christoph,Seidel, Rüdiger W.
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supporting information
(2021/12/27)
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- Synthesis and antibacterial activity of novel myricetin derivatives containing sulfonylpiperazine
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Myricetin derivatives containing sulfonylpiperazine were synthesized and their structures were confirmed by NMR and HRMS. The antibacterial activity results indicated that some compounds showed good antibacterial activity against Xanthomonas oryzaepv. ory
- He, Jun,Tang, Xue-Mei,Liu, Ting-Ting,Peng, Feng,Zhou, Qing,Liu, Li-Wei,He, Ming,Xue, Wei
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p. 1021 - 1027
(2020/10/02)
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- Comprehensive evaluation of biological effects of pentathiepins on various human cancer cell lines and insights into their mode of action
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Pentathiepins are polysulfur-containing compounds that exert antiproliferative and cytotoxic activity in cancer cells, induce oxidative stress and apoptosis, and inhibit glutathione peroxidase (GPx1). This renders them promising candidates for anticancer
- Wolff, Lisa,Bandaru, Siva Sankar Murthy,Eger, Elias,Lam, Hoai-Nhi,Napierkowski, Martin,Baecker, Daniel,Schulzke, Carola,Bednarski, Patrick J.
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- Design, synthesis and antitumor evaluation of new 1,8-naphthalimide derivatives targeting nuclear DNA
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Four series of new 3-nitro naphthalimides derivatives, 4(4a?4f), 5(5a?5i), 6(6a?6e) and 7 (7a?7j), were designed and synthesized as antitumor agents. Methyl thiazolyl tetrazolium (MTT) screening assay results revealed that some compounds displayed effecti
- Liang, Gui-Bin,Wei, Jian-Hua,Jiang, Hong,Huang, Ri-Zhen,Qin, Jing-Ting,Wang, Hui-Ling,Wang, Heng-Shan,Zhang, Ye
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- Discovery of Novel Chromone Derivatives Containing a Sulfonamide Moiety as Anti-ToCV Agents through the Tomato Chlorosis Virus Coat Protein-Oriented Screening Method
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A number of novel chromone derivatives containing sulfonamide moieties were designed and synthesized, and the activity of compounds against tomato chlorosis virus (ToCV) was assessed using the ToCVCP-oriented screening method. Comparative molecular field analysis (CoMFA) and comparative molecular similarity index analysis (CoMSIA) models were established based on the dissociation constant (Kd) values of the target compounds, and compound 35 was designed and synthesized with the aid of CoMFA and CoMSIA models. The study of affinity interaction indicated that compound 35 exhibited excellent affinity with ToCVCP with a Kd value of 0.11 μM, which was better than that of the positive control agents xiangcaoliusuobingmi (0.44 μM) and ningnanmycin (0.79 μM). In addition, the in vivo inhibitory effect of compound 35 on the ToCVCP gene was evaluated by the quantitative real-time polymerase chain reaction. ToCVCP gene expression levels of the compound 35 treatment group were reduced by 67.2%, which was better than that of the positive control agent ningnanmycin (59.5%). Therefore, compound 35 can be used as a potential anti-ToCV drug in the future.
- Jiang, Donghao,Chen, Jixiang,Zan, Ningning,Li, Chunyi,Hu, Deyu,Song, Baoan
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p. 12126 - 12134
(2021/10/26)
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- Myricetin derivative containing sulfonyl piperazine as well as preparation method and application thereof
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The invention discloses a myricetin derivative containing sulfonyl piperazine as well as a preparation method and application of the myricetin derivative. The structural general formula of the myricetin derivative is shown in the specification, and n is t
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Paragraph 0029; 0035-0036; 0049; 0055-0056
(2021/01/24)
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- Preparation method of levocetirizine
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The invention provides a preparation method of levocetirizine. The preparation method comprises following steps: carrying out a reaction on a compound represented by a formula (I) under the action ofa reduction system and L-tartaric acid to obtain a compound represented by a formula (II); and reacting the compound shown in a formula (II) with a compound shown in a formula (III) under the action of NaH, N,N-dimethyl formamide and tetrabutyl ammonium bromide to obtain levocetirizine. The levocetirizine is prepared by taking the compound shown by the formula (I) and the compound shown by the formula (III) as raw materials, at first, the compound shown by the formula (I) is de-protected and then racemized to obtain the compound shown by the formula (II); and the compound shown by the formula(II) and the compound shown by the formula (III) carry out reactions to obtain levocetirizine. The provided method is short in reaction route, the yield can reach 54% or above, and the purity can reach 99.65% at most.
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Paragraph 0024-0025
(2020/06/17)
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- Design and synthesis of substituted (1-(benzyl)-1: H -1,2,3-triazol-4-yl)(piperazin-1-yl)methanone conjugates: Study on their apoptosis inducing ability and tubulin polymerization inhibition
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A library of substituted (1-(benzyl)-1H-1,2,3-triazol-4-yl)(piperazin-1-yl)methanone derivatives were designed, synthesized and screened for their in vitro cytotoxic activity against BT-474, HeLa, MCF-7, NCI-H460 and HaCaT cells by employing 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Among all the synthesized analogues, compound 10ec displayed the highest cytotoxicity with the IC50 value of 0.99 ± 0.01 μM towards BT-474 cancer cell line. The target compound (10ec) was also evaluated for its tubulin polymerization inhibition study. Detailed biological studies such as acridine orange/ethidium bromide (AO/EB), DAPI and annexin V-FITC/propidium iodide staining assay suggested that compound 10ec induced the apoptosis of BT-474 cells. The clonogenic assay revealed that the inhibition of colony formation in BT-474 cells by 10ec in concentration-dependent manner. Moreover, the flow cytometric analysis revealed that 10ec induced apoptosis via cell cycle arrest at the sub-G1 and G2/M phase. In silico studies of sulfonyl piperazine-integrated triazole conjugates unveil that they possess drug-like properties. According to the molecular modelling studies, compound 10ec binds to the colchicine binding site of the tubulin.
- Alvala, Mallika,Babu, Bathini Nagendra,Devi, Ganthala Parimala,Godugu, Chandraiah,Manasa, Kesari Lakshmi,Nagesh, Narayana,Sigalapalli, Dilep Kumar,Thatikonda, Sowjanya,Vuppaladadium, Sowmya
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supporting information
p. 1295 - 1302
(2020/12/01)
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- Synthesis and biological evaluation of imidazo[2,1-b]thiazole based sulfonyl piperazines as novel carbonic anhydrase ii inhibitors
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A novel series of imidazo[2,1-b]thiazole-sulfonyl piperazine conjugates (9aa-ee) has been synthesized and evaluated for carbonic anhydrase (CA, EC 4.2.1.1) inhibitory potency against four isoforms: The cytosolic isozyme hCA I, II and trans-membrane tumor-
- Alvala, Mallika,Angeli, Andrea,Manasa, Kesari Lakshmi,Mohammed, Arifuddin,Pujitha, Sravya,Sethi, Aaftaab,Supuran, Claudiu T.
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- Design and synthesis of β-carboline linked aryl sulfonyl piperazine derivatives: DNA topoisomerase II inhibition with DNA binding and apoptosis inducing ability
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A series of new β-carboline linked aryl sulfonyl piperazine congeners have been synthesized by coupling various β-carboline acids with substituted aryl sulfonyl piperazines. Evaluation of their anticancer activity against a panel of human cancer cell lines such as colon (HT-29), breast (MDA-MB-231), bone osteosarcoma (MG-63), brain (U87 MG), prostate (PC- 3) and normal monkey kidney (Vero) cell line has been done. Among the series, compound 8ec and 8ed has shown most potent cytotoxicity with an IC50 values of 2.80 ± 0.10 μM and 0.59 ± 0.28 μM respectively against MG-63 cell line and also potent on other cell lines tested. Compounds 8ec and 8ed was found to inhibit Topo II that is confirmed by specific Topo II inhibition assay. DNA binding studies, cell cycle analysis, Annexin V study indicate that these compounds has potential anticancer activity. Molecular docking studies for compound 8ec and 8ed are incorporated to understand the nature of interaction with topoisomerase IIα and dsDNA.
- Alvala, Mallika,Godugu, Chandraiah,Kalle, Arunasree M.,Kiranmai, Gaddam,Lakshmi Manasa, Kesari,Nagendra Babu, Bathini,Nagesh, Narayana,Sagar, Arpita,Sigalapalli, Dilep Kumar,Thatikonda, Sowjanya
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- Synthesis and biological evaluation of ethacrynic acid derivatives bearing sulfonamides as potent anti-cancer agents
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A series of ethacrynic acid (2-[2,3-dichloro-4-(2-methylidenebutanoyl)phenoxy]acetic acid) (EA, Edecrin) containing sulfonamides linked via three types of linkers namely 1,2-ethylenediamine, piperazine and 4-aminopiperidine was synthesized and subsequently evaluated in vitro against HL60 and HCT116 cancer cell lines. All the EA analogs, excluding 6a and 6c, showed anti-proliferative activity with IC50s in the micromolar range (less than 4 uM). Three derivatives 6b, 7b and 7e were selected for their interesting dual activity on HL60 cell line in order to be further evaluated against a panel of cancer cell lines (HCT116, A549, MCF7, PC3, U87-MG and SKOV3) as well as on MRC5 as a normal cell line. These compounds displayed IC50 values in nanomolar range against A549, MCF7, PC3 and HCT116 cell lines, deducing the discovery that piperazine or 4-aminopiperidine is the linker's best choice to develop EA analogs with highly potent anti-proliferative activities own up to 24 nM. Besides, in terms of selectivity, those linkers are more suitable offering safety ratios of up to 63.8.
- Bignon, Jér?me,El Abbouchi, Abdelmoula,El Brahmi, Nabil,El Kazzouli, Sa?d,Guillaumet, Gérald,Hiebel, Marie-Aude,Suzenet, Franck
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supporting information
(2020/08/07)
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- Development of novel chromeno[4,3-c]pyrazol-4(2H)-one derivates bearing sulfonylpiperazine as antitumor inhibitors targeting PI3Kα
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PI3K signal pathway plays a vital role in cellular functions and becomes an attractive approach for cancer therapy. Herein, a new series of novel chromeno[4,3-c]pyrazol-4(2H)-one derivatives bearing sulfonylpiperazine based on the PI3K inhibitors and our previous research. They were screened for their PI3K inhibitory activities and anticancer effects in vitro. Biological studies indicated that compound 7m revealed the remarkable antiproliferative activity (IC50 ranging from 0.03 to 0.09 μM) against four cancer cell lines (A549, Huh7, HL60 and HCT-116). Besides, compound 7m displayed a certain selective for PI3Kα (IC50 = 0.009 μM) over PI3Kβ, γ and δ, and meanwhile, it can remarkable decreased the expression level of p-Akt (Ser473) and p-S6K. In addition, compound 7m could not only induce HCT-116 cell arrest at G1 phase in a dose-dependent manner, but also induce cell apoptosis via upregulation of Bax and cleaved-caspase 3/9, and downregulation of Bcl-2. Besides, compound 7m can remarkably inhibit the growth of tumor in vivo. The above results suggested that compound 7m could be considered as a promising PI3Kα inhibitor.
- Yin, Yong,Sha, Shao,Wu, Xun,Wang, She-Feng,Qiao, Fang,Song, Zhong-Cheng,Zhu, Hai-Liang
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- Synthesis of Combretastatin-A4 Carboxamidest that Mimic Sulfonyl Piperazines by a Molecular Hybridization Approach: in vitro Cytotoxicity Evaluation and Inhibition of Tubulin Polymerization
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Molecular hybridization approach is a promising structural modification tool to design new chemical entities (NCEs) by mimicking two different pharmacophoric units into one scaffold to enhance the biological properties. With this aim, combretastatin-A4 ac
- Jadala, Chetna,Sathish, Manda,Anchi, Pratibha,Tokala, Ramya,Lakshmi, Uppu Jaya,Reddy, Velma Ganga,Shankaraiah, Nagula,Godugu, Chandraiah,Kamal, Ahmed
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supporting information
p. 2052 - 2060
(2019/11/22)
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- Synthesis of Novel Benzamide- piperazine-sulfonamide Hybrids as Potential Anticancer Agents
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The synthesis of a series of substituted hippuric acid (2-benzamidoacetic acid) derivatives containing arylsulfonylpiperazine nucleus (3a–j, 4a–j) is described. The compounds were synthesized by coupling hippuric/4-fluorohippuric acid with various arylsulfonylpiperazines using N-(3-dimethylaminopropyl)-N-ethylcarbodiimide (EDCI). The structures of all the new compounds were confirmed by IR, NMR and MS spectral data. All the synthesized compounds have been evaluated for their in vitro cytotoxicity towards five human cancer cell lines of different origins viz. HeLa (Cervical), A549 (Lung), A375 (Skin), MD-AMB-231(Breast) and T98G (brain) and their IC50 values were determined. Among the compounds tested, 3b, 3d, 3g, 4c and 4e displayed significant cytotoxic activity (IC50 = 24.2–38.2 μM). T98G was the most sensitive cell line towards the compounds studied followed by HeLa, A375, A549 and MD-AMB-231.
- Ramalingeswara Rao,Mohana Rao Katiki,Dileep Kommula,SaiShyam Narayanan,Ruby John Anto,Murty
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p. 393 - 402
(2019/12/12)
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- Enantioselective Synthesis of Indolines, Benzodihydrothiophenes, and Indanes by C?H Insertion of Donor/Donor Carbenes
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We employ a single catalyst/oxidant system to enable the asymmetric syntheses of indolines, benzodihydrothiophenes, and indanes by C?H insertion of donor/donor carbenes. This methodology enables the rapid construction of densely substituted five-membered rings that form the core of many drug targets and natural products. Furthermore, oxidation of hydrazones to the corresponding diazo compounds proceeds in situ, enabling a relatively facile one- or two-pot protocol in which isolation of potentially explosive diazo alkanes is avoided. Regioselectivity studies were performed to determine the impact of sterics and electronics in donor/donor metal carbene C?H insertions to form indolines. This methodology was applied to a variety of substrates in high yield, diastereomeric, and enantiomeric ratios and to the synthesis of a patented indane estrogen receptor agonist with anti-cancer activity.
- Souza, Lucas W.,Squitieri, Richard A.,Dimirjian, Christine A.,Hodur, Blanka M.,Nickerson, Leslie A.,Penrod, Corinne N.,Cordova, Jesus,Fettinger, James C.,Shaw, Jared T.
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supporting information
p. 15213 - 15216
(2018/10/31)
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- Synthesis and biological evaluation of novel indole derivatives containing sulfonamide scaffold as potential tubulin inhibitor
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Microtubule-targeted drugs play a critical role in various types of cancer therapy worldwide. In our study, a series of novel indole derivatives containing a sulfonamide scaffold were designed, synthesized and biologically evaluated as potential tubulin p
- Man, Ruo-Jun,Tang, Dan-Jie,Lu, Xiao-Yuan,Duan, Yong-Tao,Tao, Xiang-Xiang,Yang, Meng-Ru,Wang, Le-Le,Wang, Bao-Zhong,Xu, Chen,Zhu, Hai-Liang
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supporting information
p. 1759 - 1767
(2016/09/23)
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- UREA/CARBAMATES FAAH MAGL OR DUAL FAAH/MAGL INHIBITORS AND USES THEREOF
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Disclosed are compounds that may be used to inhibit the action of fatty acid amide hydrolase (FAAH), monoacylglycerol lipase (MAGL) or dual FAAH/MAGL.
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Paragraph 0142
(2016/02/18)
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- Iodine-catalyzed oxidative amination of sodium sulfinates: A convenient approach to the synthesis of sulfonamides under mild conditions
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The iodine-catalyzed oxidative amination of sodium sulfinates in the presence of sodium percarbonate as the oxidant has been developed. The reaction shows good substrate scope and tolerates a wide range of functionalities in both amine and sodium sulfinate substrates. Aliphatic amines, heteroaromatic amines and hydrochloride salts of amines canbe employed as the amine sources in this transformation. Mechanistic studies indicated that a radical pathway might be involved in the reaction process. This transition-metalfree protocol offers an alternative and convenient approach for a preparation of a series of sulfonamides in moderate to good yields under mild conditions.
- Buathongjan, Chonchanok,Beukeaw, Danupat,Yotphan, Sirilata
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p. 1575 - 1582
(2015/03/04)
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- CARBODITHIOATES WITH SPERMICIDAL ACTIVITY AND PROCESS FOR PREPARATION THEREOF
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The present invention relates to the synthesis and biological evaluation of compound of formula I as spermicidal agents, and its pharmaceutically acceptable acid salt thereof. The invention provides bis(4- substituted-1-piperazinylthiocarbonyl) disulfide (when n = 0) and alkane-1,n-diylbis(4-substituted piperazine-1-carbodithioate) (when n = 0, 1, 2 or 3) as shown in figure 1 of the accompanying drawing. These compounds are found to be useful for spermicidal activity.
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Page/Page column 42
(2014/08/20)
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- Efficient and continuous monoacylation with superior selectivity of symmetrical diamines in microreactors
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Efficient and continuous monoacylation of symmetrical diamines performed in microreactors yielded superior selectivity to that predicted by statistical considerations. It is highly valuable that the kinetically controlled product in high yields was achieved without any special catalyst at ambient temperature.
- Maurya, Ram Awatar,Hoang, Phan Huy,Kim, Dong-Pyo
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scheme or table
p. 65 - 68
(2012/03/26)
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- Evaluation of quinazoline analogues as glucocerebrosidase inhibitors with chaperone activity
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Gaucher disease is a lysosomal storage disorder (LSD) caused by deficiency in the enzyme glucocerebrosidase (GC). Small molecule chaperones of protein folding and translocation have been proposed as a promising therapeutic approach to this LSD. Most small molecule chaperones described in the literature contain an iminosugar scaffold. Here we present the discovery and evaluation of a new series of GC inhibitors with a quinazoline core. We demonstrate that this series can improve the translocation of GC to the lysosome in patient-derived cells. To optimize this chemical series, systematic synthetic modifications were performed and the SAR was evaluated and compared using three different readouts of compound activity: enzymatic inhibition, enzyme thermostabilization, and lysosomal translocation of GC.
- Marugan, Juan J.,Zheng, Wei,Motabar, Omid,Southall, Noel,Goldin, Ehud,Westbroek, Wendy,Stubblefield, Barbara K.,Sidransky, Ellen,Aungst, Ronald A.,Lea, Wendy A.,Simeonov, Anton,Leister, William,Austin, Christopher P.
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experimental part
p. 1033 - 1058
(2011/04/25)
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- Imidazole-catalyzed monoacylation of symmetrical diamines
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Figure Presented. An imidazole-catalyzed protocol for monoacylation of symmetrical diamines has been developed. The protocol gave selective monoacylation of aliphatic (cyclic and acyclic) primary and secondary diamines. In the reaction, imidazole acts as both catalyst and a leaving group. Different monoacylated piperazines and other diamines were synthesized at room temperature in an ethanol/water solvent system.
- Verma, Sanjeev K.,Acharya,Kaushik
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supporting information; experimental part
p. 4232 - 4235
(2010/11/04)
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- Effect of Amine Nature on Reaction Rate and Mechanism in Nucleophilic Substitution Reactions of 2,4-Dinitrophenyl X-Substituted Benzenesulfonates with Alicyclic Secondary Amines
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Second-order rate constants have been measured for reactions of 2,4-dinitrophenyl X-substituted benzenesulfonates with a series of alicyclic secondary amines. The reaction proceeds through S-O and C-O bond fission pathways competitively. The S-O bond fission occurs more dominantly as the amine basicity increases and the substituent X in the sulfonyl moiety becomes more strongly electron withdrawing, indicating that the regioselectivity is governed by the amine basicity as well as the electronic nature of the substituent X. The S-O bond fission proceeds through an addition intermediate with a change in the rate-determining step at pKa° = 9.1. The secondary amines are more reactive than primary amines of similar basicity for the S-O bond fission. The k1 value has been determined to be larger for reactions with secondary amines than with primary amines of similar basicity, which fully accounts for their higher reactivity. The second-order rate constants for the S-O bond fission result in linear Yukawa-Tsuno plots while those for the C-O bond fission exhibit poor correlation with the electronic nature of the substituent X. The distance effect and the nature of reaction mechanism have been suggested to be responsible for the poor correlation for the C-O bond fission pathway.
- Um, Ik-Hwan,Chun, Sun-Mee,Chae, Ok-Mi,Fujio, Mizue,Tsuno, Yuho
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p. 3166 - 3172
(2007/10/03)
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- Certain substituted 1-aryl-3-piperazin-1′-yl propanones
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Disclosed are compounds of formula I: wherein X is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl; Z is nitrogen or CH; Ar1and Ar2independently represent aryl groups; and Y is hydrogen; o
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- Certain substituted 1-aryl-3-piperazin-1'-yl propanones to treat Alzheimer's Disease
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Disclosed are compounds of formula I: STR1 or the pharmaceutically acceptable salts thereof wherein X is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl; Z is nitrogen or CH; Ar1 and Ar2 i
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- Substituted 1-aryl-3-piperazin-1'-yl propanones
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Disclosed are compounds of formula I: STR1 wherein X is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl; Z is nitrogen or CH; Ar1 and Ar2 independently represent aryl groups; and Y is hydr
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- Nucleophilic Substitution at the Tetracoordinated Sulfur. V. Reactivity of Amines and Azole Anions in Respect to Aryl 4-Tosylates in 80% Aqueous Dimethyl Sulfoxide
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Acid dissociation constants of ammonium cations, imidazoles and phenols as well as the rates of aminolysis of p-toluenesulfonic esters 4-CH3C6H4SO2OC6H 4R in 80% aqueous DMSO at 25°C are measured. The angular coefficients of onsted plots in respect to attacking electrophiles and leaving group are close to those obtained earlier in protic media, indicating the similarity of the structure of transition states.
- Savelova,Zubareva,Simanenko
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p. 1495 - 1500
(2007/10/03)
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- Oligoethylenepiperazines
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Oligoethylenepiperazines and their derivatives of the formula SPC1 Wherein n is a positive integer of 1 to 7 inclusive; m is zero or one when n=1, or m is one when n=2?7 R1 is hydrogen, benzenesulfonyl or benzenesulfonyl ring substituted by at least one member selected from the group consisting of lower alkyl of 1-4 carbon atoms, nitro and amino; R2 is halogen when m=zero and hydrogen, benzenesulfonyl or benzenesulfonyl ring substituted by at least one member selected from the group consisting of lower alkyl of 1-4 carbon atoms, nitro and amino when m=one; and the cationic salts thereof are useful as anion exchange oligomers, antihelmintic compounds, and intermediates for the preparation of polymers and fine industrial chemicals.
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