Efficient oxidation of oleanolic acid derivatives using magnesium bis(monoperoxyphthalate) hexahydrate (MMPP): A convenient 2-step procedure towards 12-oxo-28-carboxylic acid derivatives
作者:Jorge A R Salvador、Vânia M Moreira、Rui M A Pinto、Ana S Leal、José A Paixão
DOI:10.3762/bjoc.8.17
日期:——
straightforward and high yielding procedure to convert oleanolic acid derivatives into the corresponding delta-hydroxy-gamma-lactones, by using the convenient oxidizing agent magnesium bis(monoperoxyphthalate) hexahydrate (MMPP) in refluxing acetonitrile, is reported. In addition, a two-step procedure for the preparation of oleanolic 12-oxo-28-carboxylic acid derivatives directly from Delta(12)-oleananes