A NEW CHALCONE GLYCOSIDE FROM Combretum griffithii

摘要

A new chalcone glycoside, 2＇,4,4＇,6＇-tetrahydroxydihydrochalcone 2＇-O-α-L-rhamnopyranosyl-(1→6)-β-Dglucopyranoside (1), was isolated from Combretum griffithii Huerck et M.-A. along with the known compounds (–)-epigallocatechin (2), 3＇-O-methyl-(–)-epicatechin (3), (–)-4＇-O-methyl epigallocatechin (4), (–)-epicatechin (5), (+)-catechin (6), betulin (7), maslinic acid (8), oleanolic acid (9), arjunolic acid (10), sitoindoside I (11), glycerol 1-(9Z,12Z-octadecadienoate) (12), β-sitosterol (13), and daucosterol (14). Their structures were elucidated by spectroscopic means and comparison with published data. All the compounds were isolated from Combretum griffithii for the first time.