作者:Miwako Mori、Tomohiro Tomita、Yoichi Kita、Tsuyoshi Kitamura
DOI:10.1016/j.tetlet.2004.03.171
日期:2004.5
Synthesis of N-tosylanatoxin-a was achieved by metathesis of enyne in cis-substituents on a pyrrolidine derivative. Metathesis reactions of enyne having terminal alkyne using various ruthenium-carbene complexes did not give a good results. However, when the terminal alkyne was protected with a TMS group, the reaction proceeded smoothly using a second-generation ruthenium-carbene complex to give the desired cyclized compound in high yield. Oxymercuration followed by Dess-Martin oxidation afforded N-tosylanatoxin-a. (C) 2004 Elsevier Ltd. All rights reserved.