Two allocolchicinoids 6 and 8, prepared from colchicine, together with allo compounds 9-11, made from 6 by reduction and regiodemethylation, were evaluated for antitubulin and antitumor activities. Structures of 6, 8, and 10 were confirmed by X-ray crystallographic analysis. Compounds 6, 8, and 9 have high tubulin binding affinity and display potent inhibitory activities against tubulin polymerization and solid human tumor cell lines. Particularly, drug-resistant KB cell lines, including KB-7d, KB-VCR, and KB-CPT, do not show marked resistance to these compounds.
两种源自
秋水仙碱的异秋
水仙素衍
生物 6 和
8,以及通过还原和区域去甲基化从
6 制得的异化合物
9-
11,被评估了它们的抗微管和抗肿瘤活性。
6、
8 和
10 的结构通过 X 射线晶体学分析得到了确认。化合物
6、
8 和
9 对微管结合有高亲和力,并且对微管聚合和实体人类肿瘤
细胞系显示出强大的抑制活性。特别是,包括 KB-7d、KB-
VCR 和 KB-C
PT 在内的耐药 KB
细胞系对这些化合物并未表现出显著的耐药性。