Studies in marine macrolide synthesis: A stereocontrolled synthesis of a C17-C32 subunit of scytophycin C.
作者:Ian Paterson、Yeung Kap-Sun
DOI:10.1016/s0040-4039(00)73994-3
日期:1993.8
The C-17-C32 subunit 8 of scytophycin C was prepared in 11 steps (19% yield, 83% ds) from (S)-12. Key features include the dipropionate aldol construction of the stereopentad 11, the Brown asymmetric crotylboration leading to 10, followed by their Ba(OH)2-induced, Horner-Emmons coupling to give 23, and the BF3.OEt2-promoted allylation, 25 --> 26.