An efficient constructive method for a tricyclic system: an important intermediate for the synthesis of tricycloclavulone
作者:Hisanaka Ito、Tatsuya Kobayashi、Mineki Hasegawa、Kazuo Iguchi
DOI:10.1016/s0040-4039(02)02814-9
日期:2003.2
The tricyclic ring system of tricycloclavulone was synthesized from 2-methoxycarbonyl-2-cyclopenten-1-one (2). Key reactions include Lewis acid-catalyzed [2+2]-cycloaddition of alpha,beta-unsaturated ester 2 with thioacetylene derivatives and construction of the A-ring by using the Grubbs catalyst. (C) 2003 Elsevier Science Ltd. All rights reserved.