Efficient synthesis of the taxane C ring by fragmentation reaction of a bicyclo[2.2.2]octane derivative
作者:Yoshimasa Hirai、Takuya Suga、Hiroto Nagaoka
DOI:10.1016/s0040-4039(97)01069-1
日期:1997.7
Compounds 3, the C/D ring moiety of paclitaxel without a 7-hydroxyl group, and 4, the C ring moiety of O-cinnamoyltaxicin-I (2), were synthesized stereoselectively from methyl (E,S)-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2-pentenoate (5) using the fragmentation reaction of bicyclo[2.2.2]octane derivative 9 as a key step to give 10.
从甲基(E,S)-3-(2)立体合成化合物3(不含7-羟基的紫杉醇的C / D环部分)和化合物4(O-肉桂酰基紫杉醇-I(2)的C环部分)。,(2-二甲基-1,3-二氧戊环-4-基)-2-戊烯酸酯(5)使用双环[2.2.2]辛烷衍生物9的片段化反应作为关键步骤得到10。