Enyne versus Diene RCM in the Synthesis of Cyclopentene Derivatives toward the A Ring of FR182877
作者:Jacques-Alexis Funel、Joëlle Prunet
DOI:10.1021/jo049557d
日期:2004.6.1
The A ring of FR182877, exemplified by ent-4-b,c, has been synthesized, involving an enyneRCM as the key step. A systematic comparison of enyne vs dieneRCM for the formation of cyclopentenederivatives showed that the latter metathesis proceeds much more easily even for this ring size.