作者:Dalip Kumar、N. Maruthi Kumar、Kuei-Hua Chang、Kavita Shah
DOI:10.1016/j.ejmech.2010.07.023
日期:2010.10
A series of 5-(3-indolyl)-2-substituted-1,3,4-thiadiazoles 5a–m were synthesized and their cytotoxicity analyzed against six human cancer cell lines. The reaction of indole-3-carboxylic acid 3 with aryl or heteroaryl hydrazides afforded the N,N′-diacylhydrazines 4, which upon treatment with Lawesson’s reagent resulted in the formation of indolyl-1,3,4-thiadiazoles 5a–m in good yields. Indolyl-1,3,4-thiadiazole
合成了一系列5-(3-吲哚基)-2-取代的1,3,4-噻二唑5a–m,并针对六种人类癌细胞系分析了它们的细胞毒性。吲哚-3-羧酸的反应3与芳基或杂芳基酰肼,得到N,N' -diacylhydrazines 4,其在用Lawesson试剂处理导致的吲哚基- 1,3,4-噻二唑形成5A-m的良好的产量。具有4-苄氧基-3-甲氧基苯基和5-溴吲哚基取代基的吲哚基1,3,4-噻二唑5m在抑制癌细胞生长方面最活跃(IC 50 1.5μM,PaCa2)。化合物5b,5e和5h带有C-2取代基的苄基,3,4-二甲氧基苯基和4-苄氧基-3-甲氧基苯基分别对多种癌细胞显示出显着的细胞毒性。在C-2苯环中引入4-二甲基氨基(5d和5k)和3,4,5-三甲氧基(5l)基团可诱导对MCF7和MDA-MB-231癌细胞系的选择性(化合物5d,5k和5l)。