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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-β-D-glucopyranosyl-(1-4)-β-D-glucopyranosyl- (1 - 3)-a-L-rhamnospyranosyl-(1 - 2)-a-L-arabinopyranosyl hederagenin 28-O-β-D-glucopyranosyl- (1 - 6)-β-D-glucopyranoside and 3-a-L-rhamnospyranosyl-(1 - 2)-a- Larabinopyranosyl hederagenin 28-O-a-L-rhamnospyranosyl - (1 - 2 )- [β - D- xylcopyranosyl-(1 - 6)]-β-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. Primary 2D NMR technique. Their structures were deduced to be 3-β-D-glucopyranosyl- (1-4 β-D-glucopyranosyl- (1 - 3) -aL-rhamnospyranosyl- (1 - 2) -aL-arabinopyranosyl hederagenin 28-O- 3-aL-rhamnospyranosyl- (1-2) -a-Larabinopyranosyl hederagenin 28-OaL-rhamnospyranosyl- (1 - 2) - [beta - D- xylcopyranosyl- (1-6)] - beta- D-glucopyranoside.