作者:Yasutaka Baba、Goutam Saha、Syusuke Nakao、Chuzo Iwata、Tetsuaki Tanaka、Toshiro Ibuka、Hirofumi Ohishi、Yoshiji Takemoto
DOI:10.1021/jo001036c
日期:2001.1.1
the sulfoxide 18, which was prepared stereoselectively using the chirality of (diene)Fe(CO)3 complexes. Introduction of the trans-substituted cyclopropane subunit into 21 was successfully achieved using the modified regio- and stereoselective Simmons-Smith reaction. The use of RCM (ring-closing metathesis) methodology (4-->35) was pivotal for the formation of a nine-membered unsaturated lactone fragment
描述了海洋代谢产物卤代内酯1的不对称全合成。通过在亚砜18的[2,3]σ重排,利用(diene)Fe(CO)3配合物的手性立体选择制备了在C8,C12和C15具有三个手性中心的双烯丙基三醇6。使用修饰的区域和立体选择性席梦思-史密斯反应成功地实现了将反式取代的环丙烷亚基引入21。使用RCM(闭环复分解)方法(4-→35)对于形成卤代内酯1的九元不饱和内酯片段至关重要。由于该方法具有灵活性和立体选择性,因此可以通过环己酮合成其他氧基。本文所述的协议。