Triterpenoids from <i>Adina rubella</i>

Abstract

Six new triterpenoids, 3β,23,24-trihydroxyolean-12-en-28-oic acid (1), 3β,6β,24-trihydroxyolean-12-en-28-oic acid (2), 3β,6β,19α,24-tetrahydroxyurs-12-en-28-oic acid (3), cincholic acid 3β-O-β-d-fucopyranoside (4), pyrocincholic acid 3β,-O-β-d-fucopyranoside (5), and pyrocincholic acid 3β-O-α-l-rhamnopyranoside (6) were isolated from the roots of Adina rubella. Their structures were elucidated by spectral analysis. The 13C NMR signals of 5 and 6 were assigned by 2D-NMR experiments.