摘要
A new triterpenoid saponin, together with a known saponin. was isolated from the flowers of Lonicera Japonica Thunb. Using chemical and spectroscopic methods, mainly 2D NMR technique, their structures were deduced to be 3-beta-D-glucopyranosyl-(1 --> 4)-beta-D-glucopyranosyl-(1 --> 3)-alpha-L-rhamnospyranosyl-(1 --> 2)-alpha-L-arabinopyranosyl hederagenin 28-O-beta-D-glucopyranosyl-(l --> 6)-beta-D-glucopyranoside and 3-alpha-L-rhamnospyranosyl-(1 --> 2)-alpha-L-arabinopyranosyl hederagenin 28-O-alpha-L-rhamnospyranosyl- (1 --> 2)-[beta-D-xylcopyranosyl-( 1 --> 6)]-beta-D-glucopyranoside, respectively.
A new triterpenoid saponin, together with a known saponin. was isolated from the flowers of Lonicera Japonica Thunb. Using chemical and spectroscopic methods, mainly 2D NMR technique, their structures were deduced to be 3-beta-D-glucopyranosyl-(1 --> 4)-beta-D-glucopyranosyl-(1 --> 3)-alpha-L-rhamnospyranosyl-(1 --> 2)-alpha-L-arabinopyranosyl hederagenin 28-O-beta-D-glucopyranosyl-(l --> 6)-beta-D-glucopyranoside and 3-alpha-L-rhamnospyranosyl-(1 --> 2)-alpha-L-arabinopyranosyl hederagenin 28-O-alpha-L-rhamnospyranosyl- (1 --> 2)-[beta-D-xylcopyranosyl-( 1 --> 6)]-beta-D-glucopyranoside, respectively.
基金
Laboratory of Phytochemistry
Kunming institute of Botany
Chinese Academy of Sciences.
