作者:Zhicai Yang、Phung Tang、Jolicia F. Gauuan、Bruce F. Molino
DOI:10.1021/jo902055b
日期:2009.12.18
The asymmetric total synthesis of (+)-crassalactone D (4), a naturally occurring antitumor agent, has been achieved by employing an oxidative spirocyclization of furan 11 as the key step. Two close analogues, 7-epi-crassalactone D (14) and 5-epi-7-epi-crassalactone D (15), also have been prepared in the course of the synthesis of (+)-crassalactone D.
通过将呋喃11的氧化螺环化作为关键步骤,已经实现了自然生成的抗肿瘤药(+)-cr内酯D(4)的不对称全合成。在合成(+)-assa内酯D的过程中,还制备了两个紧密的类似物7- Epi- cr内酯D(14)和5- epi -7- epi内酯D(15)。