作者:Shoji Kobayashi、Yusuke Takahashi、Kazuo Komano、Babak H. Alizadeh、Yuuya Kawada、Tohru Oishi、Shin-ichiro Tanaka、Yoshihiro Ogasawara、Shin-ya Sasaki、Masahiro Hirama
DOI:10.1016/j.tet.2004.07.010
日期:2004.9
The ABCDE ring moiety of ciguatoxin CTX3C, a major causative agent of ciguatera poisoning, was stereoselectively synthesized. The key transformations are a chiral auxiliary-based asymmetric alkylation and an asymmetric aldol condensation, which controlled the formation of the C11 and C21-stereocenters, respectively. A highly practical and efficient route to the ABCD ring fragment, a common precursor for the divergent synthesis of the left wings of ciguatoxins, was also established. (C) 2004 Elsevier Ltd. All rights reserved.