attempt to improve the antitumor activity of homocamptothecins (hCPTs), a series of novel 20-O-linked hCPT ester derivatives were first designed and synthesized based on a synthetic route, by which hCPTs are acylated with different substituted phenoxyacetic acid ester derivatives. Most of the derivatives were assayed for in vitro cytotoxicity against six human cancer cell lines KB, KB/VCR, A549, HCT-8, Bel7402
为了改善高
喜树碱(hC
PT)的抗肿瘤活性,首先基于合成路线设计和合成了一系列新颖的20- O-连接的hC
PT酯衍
生物,通过该合成路线,hC
PT被不同的取代的苯氧基
乙酸酯衍
生物酰化。对大多数衍
生物进行了针对六种人类癌
细胞系KB,KB /
VCR,A549,HCT-8,Bel7402和A2780的体外细胞毒性测定,并且大多数测定的化合物对这些肿瘤
细胞系表现出良好的抗增殖活性,尤其是对KB