Synthèse de méthyl-3 furoquinones

Abstract

The authors propose two new solutions to the problem of the synthesis of 3-methylfuranquinones. The methods have the advantage of requiring readily accessible substrates and reagents. A new synthesis of tanshinone I(26) illustrates one of the processes which in principle should also be applicable to the preparation of isotanshinones. Several novel transformations have been observed in the course of this study.