- Dipolar HCP materials as alternatives to DMF solvent for azide-based synthesis
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Hypercrosslinked polymers HCP-DMF and HCP-DMF-SO3H containing abundant and flexible DMF moieties were designed and synthesized. Benefitting from the solvation microenvironment provided by the pseudo-DMF moities, the polar HCPs manifested outstanding performances in the conversions of NaN3 to benzylic azides and 1,2,3-triazoles in EtOH (95%), respectively, avoiding the use of risky DMF and improving the separation processes of the products.
- Bai, Rongxian,Gao, Feng,Gu, Yanlong,Li, Minghao
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p. 7499 - 7505
(2021/10/12)
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- Synthesis of 1,2,3-triazole benzophenone derivatives and evaluation of in vitro sun protection, antioxidant properties, and antiproliferative activity on HT-144 melanoma cells
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Benzophenones display several biological activities, including antioxidant, anticancer, and photoprotective. Furthermore, antioxidants can minimize both ultraviolet absorption and tumor development. In the present investigation, a series of twenty-six 1,2
- Dias, Maria C.F.,de Sousa, Bianca L.,Ionta, Marisa,Teixeira, Róbson R.,Goulart, Thiago Q.,Ferreira-Silva, Guilherme á.,Pilau, Eduardo J.,dos Santos, Marcelo H.
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p. 572 - 587
(2021/02/12)
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- Design, synthesis, and evaluation of metronidazole-1,2,3-triazole derivatives as potent urease inhibitors
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A new series of metronidazole-1,2,3-triazole derivatives 6a–o was synthesized and evaluated as Helicobacter pylori urease inhibitors. All the synthesized compounds were more potent than standard inhibitor thiourea against urease. Among the synthesized compounds, compound 6f (IC50 = 1.975 ± 0.25?μM) with inhibitory activity around 11-fols more than thiourea (IC50 = 22.00 ± 0.14?μM) was the most potent compound. Kinetic study of this compound revealed that compound 6f inhibited urease in an uncompetitive mode. Based on molecular modeling study, compound 6f pointed toward the bi-nickel center and stabilized by H-bond and T-shape π–π hydrophobic interactions with the critical residues His492 and Asp633. Moreover, it anchored to the helix-turn-helix motif in the active site cavity through interaction with His593 and Arg609. Consequently, it proposed that compound 6f through stabilization of active site flap inhibited urease activity.
- Rezaei, Elham Babazadeh,Abedinifar, Fahimeh,Azizian, Homa,Montazer, Mohammad Nazari,Asadi, Mehdi,Hosseini, Samanesadat,Sepehri, Saghi,Mohammadi-Khanaposhtani, Maryam,Biglar, Mahmood,Larijani, Bagher,Amanlou, Massoud,Mahdavi, Mohammad
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p. 4217 - 4226
(2021/04/26)
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- Thymol as an Interesting Building Block for Promising Fungicides against Fusarium solani
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The semisynthesis of 15 new thymol derivatives was achieved through Williamson synthesis and copper-catalyzed azide-alkyne cycloaddition (CuAAC) approaches. The reaction of CuAAC using the "Click Chemistry"strategy, in the presence of an alkynyl thymol de
- Alves Eloy, Mariana,Ribeiro, Rayssa,Martins Meireles, Leandra,Antonio De Sousa Cutrim, Thiago,Santana Francisco, Carla,Lirian Javarini, Clara,Borges, Warley De Souza,Costa, Adilson Vidal,Queiroz, Vagner Tebaldi De,Scherer, Rodrigo,Lacerda, Valdemar,Alves Bezerra Morais, Pedro
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p. 6958 - 6967
(2021/07/19)
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- Synthesis of 1,2,3,triazole modified analogues of hydrochlorothiazide via click chemistry approach and in-vitro α-glucosidase enzyme inhibition studies
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The current study was aimed to discover potent inhibitors of α-glucosidase enzyme. A 25 membered library of new 1,2,3-triazole derivatives of hydrochlorothiazide (1) (HCTZ, a diuretic drug also being used for the treatment of high blood pressure) was synt
- Baheej, M. A. A.,Choudhary, M. Iqbal,Haniffa, Haroon M.,Iqbal, Shazia,Rizvi, Fazila,Siddiqui, Hina,Ullah, Saeed,Wahab, Atia-tul
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- Synthesis and Biological Evaluation of Hapten-Clicked Analogues of The Antigenic Peptide Melan-A/MART-126(27L)-35
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A click-chemistry-based approach was implemented to prepare peptidomimetics designed in silico and made from aromatic azides and a propargylated GIGI-mimicking platform derived from the altered Melan-A/MART-126(27L)-35 antigenic peptide ELAGIGILTV. The CuI-catalyzed Huisgen cycloaddition was carried out on solid support to generate rapidly a first series of peptidomimetics, which were evaluated for their capacity to dock at the interface between the major histocompatibility complex class-I (MHC-I) human leucocyte antigen (HLA)-A2 and T-cell receptors (TCRs). Despite being a weak HLA-A2 ligand, one of these 11 first synthetic compounds bearing a p-nitrobenzyl-triazole side chain was recognized by the receptor proteins of Melan-A/MART-1-specific T-cells. After modification of the N and C termini of this agonist, which was intended to enhance HLA-A2 binding, one of the resulting seven additional compounds triggered significant T-cell responses. Thus, these results highlight the capacity of naturally circulating human TCRs that are specific for the native Melan-A/MART-126-35 peptide to cross-react with peptidomimetics bearing organic motifs structurally different from the native central amino acids.
- Tarbe, Marion,Miles, John J.,Edwards, Emily S. J.,Miles, Kim M.,Sewell, Andrew K.,Baker, Brian M.,Quideau, Stéphane
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supporting information
p. 799 - 807
(2020/04/20)
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- Synthesis of 1,2,3-triazole derivatives of 4,4'-dihydroxybenzophenone and evaluation of their elastase inhibitory activity
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The present investigation describes the synthesis of a series of novel triazole derivatives from 4,4'-dihydroxybenzophenone along with their elastase inhibitory activity. The 1,2,3-triazoles were obtained via the copper(I)-catalyzed azide-alkyne cycloaddi
- Dias, Maria C.F.,Gularte, Thiago Q.,Teixeira, Róbson R.,Santos, Jorge A.N.,Pilau, Eduardo J.,Mendes, Tiago,Demuner, Ant?nio J.,Dos Santos, Marcelo H.
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- Identification of highly potent and selective Cdc25 protein phosphatases inhibitors from miniaturization click-chemistry-based combinatorial libraries
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Cell division cycle 25 (Cdc25) protein phosphatases play key roles in the transition between the cell cycle phases and their association with various cancers has been widely proven, which makes them ideal targets for anti-cancer treatment. Though several Cdc25 inhibitors have been developed, most of them displayed low activity and poor subtype selectivity. Therefore, it is extremely important to discover novel small molecule inhibitors with potent activities and significant selectivity for Cdc25 subtypes, not only served as drugs to treat cancer but also to probe its mechanism in transitions. In this study, miniaturized parallel click chemistry synthesis via CuAAC reaction followed by in situ biological screening were used to discover selective Cdc25 inhibitors. The bioassay results showed that compound M2N12 proved to be the most potent Cdc25 inhibitor, which also act as a highly selective Cdc25C inhibitor and was about 9-fold potent than that of NSC 663284. Moreover, M2N12 showed remarkable anti-growth activity against the KB-VIN cell line, equivalent to that of PXL and NSC 663284. An all-atom molecular dynamics (MD) simulation approach was further employed to probe the significant selectivity of M2N12 for Cdc25C relative to its structural homologs Cdc25A and Cdc25B. Overall, above results make M2N12 a promising lead compound for further investigation and structural modification.
- Jing, Lanlan,Wu, Gaochan,Hao, Xia,Olotu, Fisayo A.,Kang, Dongwei,Chen, Chin Ho,Lee, Kuo-Hsiung,Soliman, Mahmoud E.S.,Liu, Xinyong,Song, Yuning,Zhan, Peng
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- Carcarinic acid-1, 2, 3- based triazole compound as well as preparation method and application thereof (by machine translation)
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The method comprises the following steps: firstly 1, 2, 3 - oxidizing and opening the carbon- carbon double bond of the, carcarinic acid into methylene to, obtain carcarinic acid (not shown, in the technical field of, organic 3 - synthesis), Wolf - Kishner - 1, 2, 3 - 1, 2, 3 - 1, 2, 3 - 3 . (by machine translation)
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Paragraph 0163-0165
(2019/12/25)
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- Novel leucine ureido derivatives as aminopeptidase N inhibitors using click chemistry
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The over-expression of aminopeptidase N on diverse malignant cells is associated with the tumor angiogenesis and metastasis. In this report, one new series of leucine ureido derivatives containing the triazole moiety was designed, synthesized and evaluated as APN inhibitors. Among them, compound 13v showed the best APN inhibition with an IC50 value of 0.089 ± 0.007 μM, which was two orders of magnitude lower than that of bestatin (IC50 = 9.4 ± 0.5 μM). Compound 13v also showed dose-dependent anti-angiogenesis activities. Even at the lower concentration (10 μM), compound 13v presented similar anti-angiogenesis activity compared with bestatin at 100 μM in both the human umbilical vein endothelial cells (HUVECs) capillary tube formation assay and the rat thoracic aorta rings test. Moreover, compared with bestatin, 13v exhibited comparable, if not better in vivo anti-metastasis activity in a mouse H22 pulmonary metastasis model.
- Cao, Jiangying,Ma, Chunhua,Zang, Jie,Gao, Shuai,Gao, Qianwen,Kong, Xiujie,Yan, Yugang,Liang, Xuewu,Ding, Qin'ge,Zhao, Chunlong,Wang, Binghe,Xu, Wenfang,Zhang, Yingjie
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p. 3145 - 3157
(2018/06/01)
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- Bambusurils Bearing Nitro Groups and Their Further Modifications
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Bambusurils are recently developed neutral anion receptors that show a high affinity towards many inorganic anions, not only in organic solvents but also in water. However, the number of water-soluble bambusurils and also those bearing functional groups is very limited. In this paper we report the synthesis of four- and six-membered bambusurils containing eight and twelve nitro groups. All the nitro groups on the bambusuril portals could be transformed into amino functions, which provided the macrocycles with water solubility and allowed their further modification. For example, we have demonstrated the conversion of amino groups on the bambusurils into the corresponding urea-functionalized bambusuril derivatives. We also report the first example of a bambusuril bearing only two functional groups, which was prepared by the condensation of two different glycolurils.
- Yawer, Mirza Arfan,Sleziakova, Kristina,Pavlovec, Lukas,Sindelar, Vladimir
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- Targeting the entrance channel of NNIBP: Discovery of diarylnicotinamide 1,4-disubstituted 1,2,3-triazoles as novel HIV-1 NNRTIs with high potency against wild-type and E138K mutant virus
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Inspired by our previous efforts on the modifications of diarylpyrimidines as HIV-1 non-nucleoside reverse transcriptase inhibitors (NNRTI) and reported crystallography study, novel diarylnicotinamide derivatives were designed with a “triazole tail” occupying the entrance channel in the NNRTI binding pocket of the reverse transcriptase to afford additional interactions. The newly designed compounds were then synthesized and evaluated for their anti-HIV activities in MT-4 cells. All the compounds showed excellent to good activity against wild-type HIV-1 strain with EC50 of 0.02–1.77 μM. Evaluations of selected compounds against more drug-resistant strains showed these compounds had advantage of inhibiting E138K mutant virus which is a key drug-resistant mutant to the new generation of NNRTIs. Among this series, propionitrile (3b2, EC50(IIIB) = 0.020 μM, EC50(E138K) = 0.015 μM, CC50 = 40.15 μM), pyrrolidin-1-ylmethanone (3b8, EC50(IIIB) = 0.020 μM, EC50(E138K) = 0.014 μM, CC50 = 58.09 μM) and morpholinomethanone (3b9, EC50(IIIB) = 0.020 μM, EC50(E138K) = 0.027 μM, CC50 = 180.90 μM) derivatives are the three most promising compounds which are equally potent to the marketed drug Etravirine against E138K mutant strain but with much lower cytotoxicity. Furthermore, detailed SAR, inhibitory activity against RT and docking study of the representative compounds are also discussed.
- Tian, Ye,Liu, Zhaoqiang,Liu, Jinghan,Huang, Boshi,Kang, Dongwei,Zhang, Heng,De Clercq, Erik,Daelemans, Dirk,Pannecouque, Christophe,Lee, Kuo-Hsiung,Chen, Chin-Ho,Zhan, Peng,Liu, Xinyong
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p. 339 - 350
(2018/04/10)
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- Discovery of phenylalanine derivatives as potent HIV-1 capsid inhibitors from click chemistry-based compound library
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The HIV-1 capsid (CA) protein plays essential roles in both early and late stages of HIV-1 replication and is considered an important, clinically unexploited therapeutic target. As such, small drug-like molecules that inhibit this critical HIV-1 protein h
- Wu, Gaochan,Zalloum, Waleed A.,Meuser, Megan E.,Jing, Lanlan,Kang, Dongwei,Chen, Chin-Ho,Tian, Ye,Zhang, Fangfang,Cocklin, Simon,Lee, Kuo-Hsiung,Liu, Xinyong,Zhan, Peng
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p. 478 - 492
(2018/09/25)
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- Dual roles of substituted thiourea as reductant and ligand in CuAAC reaction
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A highly efficient catalytic system, CuSO4·5H2O/1-(4-methoxyphenyl)-3-phenylthiourea, for the copper(I)-catalyzed azide–alkyne cycloaddition reaction (CuAAC) was discovered. In the above catalytic system, substituted thiourea acts both as a reductant and a ligand. CuSO4·5H2O/1-(4-methoxyphenyl)-3-phenylthiourea is both an economical and efficient catalyst for the CuAAC reaction. In addition, the new catalytic system has advantageous features including mild and green reaction conditions, and broad substrate compatibility. A variety of 1,4-disubstituted 1,2,3-triazoles have been prepared with good to excellent yields with the CuSO4·5H2O/1-(4-methoxyphenyl)-3-phenylthiourea catalytic system in aqueous solution.
- Wang, Siyu,Jia, Kai,Cheng, Jiajia,Chen, Yu,Yuan, Yaofeng
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supporting information
p. 3717 - 3721
(2017/09/01)
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- Development of new scaffolds as reversible tissue transglutaminase inhibitors, with improved potency or resistance to glutathione addition
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Previous studies within our group have yielded a class of cinnamoyl-based competitive reversible inhibitors for tissue transglutaminase (TG2), with Ki values as low as 1.0 μM (compound CP4d). However, due to the electrophilic nature of their al
- Apperley, Kim Y. P.,Roy, Isabelle,Saucier, Vincent,Brunet-Filion, Nicholas,Piscopo, Sara-Pier,Pardin, Christophe,De Francesco, élise,Hao, Catherine,Keillor, Jeffrey W.
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supporting information
p. 338 - 345
(2017/03/08)
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- Leishmanicidal and cytotoxic activity of hederagenin-bistriazolyl derivatives
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Aiming to obtain new potent leishmanicidal and cytotoxic compounds from natural sources, the triterpene hederagenin was converted into several new 1,2,3-triazolyl derivatives tethered at C-23 and C-28. For this work hederagenin was isolated from fruits of
- Rodríguez-Hernández, Diego,Barbosa, Luiz C.A.,Demuner, Antonio J.,Nain-Perez, Amalyn,Ferreira, Sebasti?o R.,Fujiwara, Ricardo T.,de Almeida, Raquel M.,Heller, Lucie,Csuk, René
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supporting information
p. 624 - 635
(2017/10/13)
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- Novel hederagenin-triazolyl derivatives as potential anti-cancer agents
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A series of novel aryl-1H-1,2,3-triazol-4-yl methylester and amide derivatives of the natural product hederagenin was synthesized aiming to develop new antitumor agents, using Huisgen 1,3-dipolar cycloaddition reactions, with yields between 35% and 95%. T
- Rodríguez-Hernández, Diego,Demuner, Antonio J.,Barbosa, Luiz C.A.,Heller, Lucie,Csuk, René
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p. 257 - 267
(2016/04/05)
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- An efficient synthesis of phosphoramidates from halides in aqueous ethanol
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An environment friendly and efficient synthesis of primary phosphoramidates has been developed from benzyl/allyl/alkyl/propargyl halides in aqueous ethanol as a green reaction medium via in-situ formation of azide. The method is simple, metal free and high yielding at room temperature with wide substrate scope and functional group compatibility. The optimized protocol can be used for synthesis of phosphoramidate intermediates used as prodrug moieties to improve therapeutic potential of the parent drug.
- Dangroo,Dar,Shankar,Khuroo,Sangwan
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p. 2717 - 2722
(2016/06/09)
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- Synthesis and antifungal activity of the novel triazole derivatives containing 1,2,3-triazole fragment
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A series of fluconazole analogues containing 1,2,3-triazole fragment have been designed and synthesized on the basis of the active site of the cytochrome P450 14α-demethylase (CYP51). Their structures were characterized by 1H NMR, 13C NMR and LC-MS. The MIC80 values indicate that the target compounds 1a-r showed higher activities against nearly all the fungi tested to some extent except against Aspergillus fumigatus. Compounds 1c, e, f, l and p showed 128 times higher activity (with the MIC 80 value of 0.0039 mg/mL) than that of fluconazole against Candida albicans and also showed higher activity than that of the other positive controls.
- Yu, Shichong,Wang, Nan,Chai, Xiaoyun,Wang, Baogang,Cui, Hong,Zhao, Qingjie,Zou, Yan,Sun, Qingyan,Meng, Qingguo,Wu, Qiuye
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p. 1215 - 1222
(2013/11/06)
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- Sequential one-pot ruthenium-catalyzed azide-alkyne cycloaddition from primary alkyl halides and sodium azide
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An experimentally simple sequential one-pot RuAAC reaction, affording 1,5-disubstituted 1H-1,2,3-triazoles in good to excellent yields starting from an alkyl halide, sodium azide, and an alkyne, is reported. The organic azide is formed in situ by treating the primary alkyl halide with sodium azide in DMA under microwave heating. Subsequent addition of [RuClCp*(PPh 3)2] and the alkyne yielded the desired cycloaddition product after further microwave irradiation.
- Johansson, Johan R.,Lincoln, Per,Norden, Bengt,Kann, Nina
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experimental part
p. 2355 - 2359
(2011/05/13)
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- Design synthesis and biological evaluation of 3-substituted triazole derivatives
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Based on the active site of lanosterol 14α-demethylase of azole antifungal agents, sixteen 1-(1H-1,2,4-triazole-1-yl)- 2-(2,4-difluorophenyl)-3- (N-n-butyl-N-1-substitutedbenzyl-4-methylene-1H-1,2,3-triazole)-2-propanols have been designed, synthesized and evaluated as antifungal agents. Results of preliminary antifungal tests against eight human pathogenic fungi in vitro showed that some of the compounds exhibited excellent activities with broad spectrum.
- Wang, Bao Gang,Yu, Shi Chong,Chai, Xiao Yun,Yan, Yong Zheng,Hu, Hong Gang,Wu, Qiu Ye
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scheme or table
p. 519 - 522
(2012/01/05)
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- Microwave-assisted benzyne-click chemistry: preparation of 1H-benzo[d][1,2,3]triazoles
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The benzotriazoles were prepared by three-component and two-component microwave-assisted [3+2] cycloadditions of various azides to benzyne, 3-methoxybenzyne, and 4,5-difluorobenzyne. In the three-component reaction, the aryne is generated, in the presence of an azide prepared in situ, by the reaction of an o-(trimethylsilylaryl) triflate with either CsF or KF/18-Crown-6. However, in the two-component reactions, a freshly prepared azide is added to the reaction vessel prior to aryne generation. Good to excellent yields of benzotriazoles were obtained in 15-20 min when the microwave-assisted reactions were carried out at 125 °C. These reaction times are significantly faster than similar reactions carried out using conventional heating.
- Ankati, Haribabu,Biehl, Ed
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supporting information; experimental part
p. 4677 - 4682
(2009/10/26)
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- CINNAMOYL INHIBITORS OF TRANSGLUTAMINASE
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A compound of Formula, (I) or Formula: (II)
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Page/Page column 53; 79
(2009/01/20)
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- A simple one-pot procedure for the direct conversion of alcohols into azides using TsIm
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A facile and efficient method for one-pot conversion of alcohols into azides using N-(p-toluenesulfonyl)imidazole (TsIm) is described. In this method, alcohols are refluxed with a mixture of NaN3, TsIm and triethylamine in the presence of catalytic amounts of tetra-n-butylammonium iodide (TBAI) in DMF affording the corresponding alkyl azides in good yields. This methodology is highly efficient for various structurally diverse alcohols with selectivity for ROH: 1° > 2° > 3°.
- Soltani Rad, Mohammad Navid,Behrouz, Somayeh,Khalafi-Nezhad, Ali
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p. 3445 - 3449
(2008/02/10)
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- Antiinflammatory 5H-tetrazolo (5,1-c)(1,4)benzodiazepine derivatives
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The compounds of the formula STR1 in which R is hydrogen, halogen, alkyl, alkoxy, hydroxyl, nitro or cyano; and R2 is =O, =S, H2, --SCH3, or an amino group; with the proviso that when R is chloro in 8-position, R2/su
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