Stereoselective reactions. XVIII. Synthesis and cytotoxicity of the demethyl derivatives of steganes.
作者:Kiyoshi TOMIOKA、Hisashi KAWASAKI、Kenji KOGA
DOI:10.1248/cpb.38.1898
日期:——
Demethyl derivatives of steganes and deoxypodorhizon, 3, 4, 6, 7, 9, 10, 12, 13, 18, 23, were prepared by the selective demethylation of the methoxy group of steganes and deoxypodorhizon, 2, 5, 8, 11, 22. The cytotoxicity of these derivatives was evaluated against KB cell and was found not to exceed that of the parent steganes. 4-Demethyldexypodorhizon (18) was found to show more potent cytotoxicity than deoxypodorhizon (22).
通过选择性去甲基化 Steganes 和 deoxypodorhizon、3、4、6、7、9、10、12、13、18、23 的甲氧基,制备了 Steganes 和 deoxypodorhizon、2、5、8、11、22 的去甲基衍生物。对这些衍生物对 KB 细胞的细胞毒性进行了评估,结果发现它们的细胞毒性不超过母体甜菜碱。研究发现,4-去甲基二氧哒嗪(18)比脱氧哒嗪(22)显示出更强的细胞毒性。