Practical Synthesis of Bredemolic Acid, a Natural Inhibitor of Glycogen Phosphorylase
作者:Keguang Cheng、Pu Zhang、Jun Liu、Juan Xie、Hongbin Sun
DOI:10.1021/np8003886
日期:2008.12.1
Bredemolic acid (3) is a naturally occurring 2beta,3alpha-isomer of maslinic acid (1) that is an allosteric site inhibitor of glycogenphosphorylase (GP). A practical synthesis of 3 was accomplished (18% yield) in five steps starting from the readily available 2beta,3beta-diol 6a. In a similar fashion, 2beta,3alpha-dihydroxyurs-12-en-28-oic acid (4) was synthesized as a natural 2beta,3alpha-isomer