Design, synthesis, characterization, and antiproliferative activity of novel pyrazole-3-carboxylic acid derivatives
摘要:
In this study several novel 4-substituted-1-(3-nitrophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid derivatives were synthesized. The structures of these pyrazole-3-carboxylic acid derivatives were characterized by FT-IR, H-1 NMR, C-13 NMR, and elemental analysis methods. Synthesized molecules were screened to evaluate their antiproliferative activities against Vero (African green monkey kidney), C6 (rat brain tumor), and HeLa (human uterus carcinoma) cells as in vitro. The tests were carried out as dose-dependent assay starting from 100 to 500 mu g/cm(3). Ethyl 1-(3-nitrophenyl)-5-phenyl-3-(phenylcarbamoyl)-1H-pyrazole-4-carboxylate exhibited the highest performance against HeLa, Vero, and C6 cells among the synthesized derivatives. Also, it showed better antiproliferative activity compared with 5-fluorouracil (5-FU) against Vero cell. Two compounds showed moderate antiproliferative activities against C6 cell line when compared with 5-FU. Also moderate antiproliferative activities against Vero and HeLa cell lines were found.
由呋喃-2,3-二酮1和N-苄叉基-N '-(3-硝基苯基)肼制得的1 H-吡唑-3-羧酸2通过其酰氯3与各种醇的反应而转化。或N-亲核试剂分别变成相应的酯或酰胺衍生物4或5。腈6和苯胺基吡唑酸7个的衍生物2也通过脱水而获得图5A中的SOCl的混合物2用DMF和减少2与多硫化钠分别。而环缩合反应2或7与苯基肼或水合肼和6与仅无水肼分别导致吡唑并[3,4- d ]-哒嗪酮8和吡唑并[3,4- d ]哒嗪胺9的衍生物。2与2-肼基吡啶并reaction反应生成并吡唑酸衍生物10,将其脱羧得到to并吡唑衍生物11。吡唑并[4,3- d ]恶嗪酮12和2-喹啉基吡唑并[3,4- d ]哒嗪13衍生物也通过环戊二烯的缩合反应制备。分别与盐酸羟胺和乙醛分别为2和7。