Synthesis and antitumor activity of 4-cyclohexyl/aryl-5-(pyridin-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thiones
摘要:
The reaction of 2-isonicotinoyl-N-cyclohexyl/arylhydrazinecarbothioamide (2a-r) with sodium hydroxide, in each case, a single product was obtained. The structures of the compounds were confirmed on the basis of their elemental analysis and spectral data. The single crystal X-ray analysis confirmed the structure of these products as N-4-cyclohexyl/aryl-5-(pyridine-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thiones (3a-r). The in vitro antitumor activity of compounds was screened against three cell lines; BEL-7402, HUH-7 and HepG2 human hepatoma using MTT assay. Sorafenib (50 A mu M) was used as a positive control. The results of the MTT-dye reduction assay indicated that most of the compounds exert potent cytotoxic/antiproliferative effect in a time and dose-dependent manner via induced apoptosis of HepG2 cells. Results also showed that the tested compounds could significantly enhance the activity of caspase-3 which plays a very important role as the central effecter during apoptosis. The effect of different substitutions on the aromatic portion on the activity was found to be in the following order CH3 > OCH3 > I > SO2NH2 > OC2H5 > C2H5 > NO2 > Cl > CH3CONH.
Design, synthesis and antiinflammatory activity of some 1,3,4-oxadiazole derivatives
作者:FA Omar、NM Mahfouz、MA Rahman
DOI:10.1016/0223-5234(96)83976-6
日期:1996.1
appropriate isothiocyanate derivatives. The structures of the synthesized compounds were confirmed by elemental as well as spectroscopic analyses. The antiinflammatoryactivity was investigated by determination of the inhibitory effects of the oxadiazole derivatives 19-34 on histamine-induced edema in rat abdomen. Compounds 19a, 21a, 23b, 28c and 32d proved to be more potent antiinflammatory agents at 200 mg/kg
A series of aliphatic isoniazid carbo(x/thio)amides has been synthesized by a facile one-pot green method in aqueous media by harnessing microwave irradiations. In vitro antitubercular screening of the synthesized compounds against Mycobacterium tuberculosis H37Rv (MTB strain) reveals promising antimycobacterial potential with MIC in the range of 1 to 4 µg/ml. A computational approach comprising DFT
Narrow SAR in odorant sensing Orco receptor agonists
作者:Ian M. Romaine、Robert W. Taylor、Samsudeen P. Saidu、Kwangho Kim、Gary A. Sulikowski、Laurence J. Zwiebel、Alex G. Waterson
DOI:10.1016/j.bmcl.2014.04.081
日期:2014.6
The systematic exploration of a series of triazole-based agonists of the cation channel insect odorant receptor is reported. The structure-activity relationships of independent sections of the molecules are examined. Very small changes to the compound structure were found to exert a large impact on compound activity. Optimal substitutions were combined using a 'mix-and-match' strategy to produce best-in-class compounds that are capable of potently agonizing odorant receptor activity and may form the basis for the identification of a new mode of insect behavior modification. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis and hypoglycemic activity of 3-aryl(or pyridyl)-5-alkyl(or aryl)amino-1,3,4-thiadiazoles and some sulfonylurea derivatives of 4H-1,2,4-triazoles
作者:C. V. Deliwala、M. Y. Mhasalkar、M. H. Shah、P. D. Pilankar、S. T. Nikam、K. G. Anantanarayanan
DOI:10.1021/jm00292a035
日期:1971.10
Synthesis and anti-Candidal activity of N-(4-aryl/cyclohexyl)-2-(pyridine-4-yl carbonyl) hydrazinecarbothioamide
作者:Mashooq Ahmad Bhat、Abdul Arif Khan、Shahanavaj Khan、Mohamed A. Al-Omar、Mohammad Khalid Parvez、Mohammed Salem Al-Dosari、Abdullah Al-Dhfyan
DOI:10.1016/j.bmcl.2014.01.060
日期:2014.3
Eighteen N-(4-aryl/cyclohexyl)-2-(pyridine-4-yl carbonyl) hydrazinecarbothioamide derivatives were synthesized, evaluated against ten clinical isolates of Candida spp. and compared with itraconazole. Introduction of p-chloro (2c), p-iodo (2q), m-chloro (2l) and o-nitro (2r) substitution at phenyl ring of thiosemicarbazide enhanced the anti-Candida activity. Compound (2c) bearing p-cholorophenyl ring was found to be the most effective against Candida albicans ATCC 66027, Candida spp. 12810 (blood) and Candida spp. 178 (HVS) with MIC value of 0.09-0.78 mu g/mL, whereas itraconazole exhibits the inhibitory activity with MIC value of 0.04-1.56 mu g/mL against all tested strains. There is a correlation between anti-Candidal activity and p-chloro substitution at phenyl ring of thiosemicarbazide. All synthesized compounds were investigated for their potential cytotoxicity against non cancer cell line MCF-10A. The active compounds 2c, 2r and 2a were further investigated for their cytotoxic effects on three cancer cell lines; HT1080 (skin), HepG2 (liver) and A549 (lung). The active compounds showed minimal cytotoxic activity against non cancer cell line and all three cancer cell lines. Moreover, compound 2c displaying better activity against C. albicans ATCC66027 and Candida spp. [blood] compared to reference drug (itraconazole), represents a good lead for the development of newer, potent and broad spectrum anti-Candidal agents. (C) 2014 Elsevier Ltd. All rights reserved.