Pentacyclic triterpenes. Part 1: The first examples of naturally occurring pentacyclic triterpenes as a new class of inhibitors of glycogen phosphorylases

X Wen, H Sun, J Liu, G Wu, L Zhang, X Wu…

Index: Wen, Xiaoan; Sun, Hongbin; Liu, Jun; Wu, Guanzhong; Zhang, Luyong; Wu, Xiaoming; Ni, Peizhou Bioorganic and Medicinal Chemistry Letters, 2005 , vol. 15, # 22 p. 4944 - 4948

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Citation Number: 104

Abstract

The semi-synthesis, in vitro and in vivo biological evaluation of corosolic acid (1) and maslinic acid (2) are described. Compounds 1 and 2 represent a new class of inhibitors of glycogen phosphorylases. Both 1 and 2 inhibit the increase of fasted plasma glucose of diabetic mice induced by adrenaline. It is therefore proposed that naturally occurring pentacyclic triterpenes 1 and 2 might reduce blood glucose, at least in part, through ...