Asymmetric Total Syntheses of (−)-Antofine and (−)-Cryptopleurine Using (<i>R</i>)-(<i>E</i>)-4-(Tributylstannyl)but-3-en-2-ol
作者:Sanghee Kim、Taeho Lee、Eunjung Lee、Jaekwang Lee、Gao-jun Fan、Sang Kook Lee、Deukjoon Kim
DOI:10.1021/jo049820a
日期:2004.4.1
The asymmetric total syntheses of the representative phenanthroindolizidine and phenanthroquinolizidine alkaloids, (−)-antofine and (−)-cryptopleurine, are described. An efficient synthetic pathway to the key intermediate 12, in enantiomerically pure form, was achieved by using a chiral building block (R)-9 and the Overman rearrangement with a total transfer of chirality. The problem of constructing
描述了代表性的菲咯啉吲哚和菲咯喹啉嗪生物碱(-)-antofine和(-)-cryptopleurine的不对称总合成。通过使用手性结构单元(R)-9和具有手性的全部转移的Overman重排,可以实现对映体纯形式的通往关键中间体12的有效合成途径。主要通过分别使用闭环易位反应和交叉复分解反应成功地解决了构建吡咯烷环和哌啶环的问题。