A NEW CHALCONE GLYCOSIDE FROM Combretum griffithu

摘要

A new chaicone glycoside, 2',4,4',6'-tetrahydroxydihydrochalcone 2'-O-α-L-rhamnopyranosyi-(1→6)-P-D-glucopyranoside (1), was isolated from Combreium griffithii Huerck et M.-A. along with the known compounds (-)-epigallocatechin (2), 3'-O-methyl-(-)-epicatechin (3), (-)-4'-(9-methyl epigallocatechin (4), (-)-epicatechin (5), (+)-catechin (6), betulin (7), maslinic acid (8), oleanolic acid (9), arjunolic acid (10), sitoindoside 1 (11), glycerol 1-(9Z,12Z-octadecadienoate) (12), p~sitosterol (13), and daucosterol (14). Their structures vvere elucidated by spectroscopic means and comparison with published data. Ail the compounds vvere isolated from Combreium griffithii for the first time.