A procedure to exclusively obtain 3′S-cyanoanhydrovinblastine 12 from two naturally occurring vinca-alkaloids (catharanthine and vindoline) in one step with good yield is described. Stereoselective reductions of 12, providing straightforward access to three new vinca-alkaloids, including two diastereomers 3′S-cyano-(4′R,5′-dihydro)-anhydrovinblastine and 3′S-cyano-(4′S,5′-dihydro)-anhydrovinblastine
为排他性地获得3'A过程š -cyanoanhydrovinblastine 12从两个在一个步骤中天然存在的长春花
生物碱(
长春碱和
文多灵)具有良好的产率进行说明。的立体选择性的减少12,提供直接的访问三个新的长春花
生物碱,包括两种非对映3'小号
氰基(4' - [R,5'-二氢)-anhydrovinblastine和3'小号
氰基(4'小号,5'二氢)-anhydrovinblastine以及(3'小号-
氨甲基) - (4'小号,5'-二氢)以良好的收率-anhydrovinblastine还报道。