Total Synthesis of (+)-Spongistatin 1. An Effective Second-Generation Construction of an Advanced EF Wittig Salt, Fragment Union, and Final Elaboration
作者:Amos B. Smith、Wenyu Zhu、Shohei Shirakami、Chris Sfouggatakis、Victoria A. Doughty、Clay S. Bennett、Yasuharu Sakamoto
DOI:10.1021/ol034037a
日期:2003.3.1
A stereocontrolled, total synthesis of (+)-spongistatin 1 (1) has been achieved. Union of a second-generation EF Wittig salt (+)-3 with the advanced ABCD aldehyde (-)-4, followed by regioselective macrolactonization and global deprotection afforded (+)-spongistatin 1 (1). The longest linear sequence, 29 steps, proceeded in 0.5% overall yield.
实现了立体控制的(+)-海绵抑素1(1)的全合成。将第二代EF维蒂希盐(+)-3与先进的ABCD醛(-)-4结合,然后进行区域选择性大环内酯化和整体脱保护,得到(+)-海绵抑素1(1)。最长的线性序列(29步)以0.5%的总产率进行。