Formal Total Synthesis of Hemibrevetoxin B via the Intramolecular Allylation Followed by Ring-Closing Metathesis
作者:Isao Kadota、Takashi Abe、Yukako Ishitsuka、Abeda S. Touchy、Ryoko Nagata、Yoshinori Yamamoto
DOI:10.3987/com-07-s(w)39
日期:——
A formal totalsynthesis of hemibrevetoxinB (1) is described. Intramolecular allylation of α-chloroacetoxy ether 10, prepared from carboxylic acid 11 and alcohol 12, was carried out with MgBr 2 ·OEt 2 to give 27. Ring-closing metathesis of 27 furnished tetracycle 29, which was converted to a known synthetic intermediate 9, to complete a formal totalsynthesis of 1.