One-step biomimetic synthesis of (±)-linderaspirone A and (±)-bi-linderone
摘要:
A one-step biomimetic synthesis of racemic linderspirone and bi-liderone from methyllinderone has been achieved, which probably reflects the biosynthesis of the natural products. There are few naturally occurring substances that appear to be formed by a [4+4] or [4+2] cycloaddition. We proposed that the [4+4] dimerization of methyllinderone proceeds via a stepwise mechanism involving a diradical intermediate. (C) 2011 Elsevier Ltd. All rights reserved.