Reaction of indole-2,3-dicarboxylic anhydride with (3-bromo-4-pyridyl)triisopropoxytitanium: Synthesis of ellipticine
作者:Yasuyoshi Miki、Yoshitaka Tada、Norihide Yanase、Hiroko Hachiken、Ko-ichi Matsushita
DOI:10.1016/0040-4039(96)01768-6
日期:1996.10
N-Benzylindole-2,3-dicarboxylic anhydride (1) was reacted with (3-bromo-4-pyridyl)triisopropoxytitanium to give 2-(3-bromoisonicotinoyl)indole-3-carboxylic acid (2) as the sole product in high yield, which could be converted to ellipticine in six steps.
使N-苄基吲哚-2,3-二羧酸酐(1)与(3-溴-4-吡啶基)三异丙氧基钛反应,得到2-(3-溴异烟酰基)吲哚-3-羧酸(2)的唯一产物。收率,可以通过六个步骤将其转化为玫瑰树碱。