Two new furostanol oligoglycosides named as aspacochioside A (1) and B (2) were isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Their structures were elucidated to be 3-O-[{a-L-rhamnopyranosyl-(14)...Two new furostanol oligoglycosides named as aspacochioside A (1) and B (2) were isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Their structures were elucidated to be 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glucopyranosyl}]-26-O-[b-D-glucopy- ranosyl]-(25S)-5b-furostane-3b,22a,26-triol 1 and 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glu- copyranosyl}]-26-O-[b-D-glucopyranosyl]-22a-methoxy-(25S)-5b-furostane-3b,26-diol 2 on the basis of spectroscopic techniques and chemical methods.展开更多
A new furost-20(22)-ene oligoglycoside named as aspacochioside C was isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Its structure was elucidated to be 26-O-b- D-glucopyranosyl-(25S)-5b-furost-20(...A new furost-20(22)-ene oligoglycoside named as aspacochioside C was isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Its structure was elucidated to be 26-O-b- D-glucopyranosyl-(25S)-5b-furost-20(22)-en-3b,26-diol-3-O-a-L-rhamnopyranosyl-(14)-b-D- glucopyranoside on the basis of spectroscopic techniques including 1D and 2D NMR experiments.展开更多
文摘Two new furostanol oligoglycosides named as aspacochioside A (1) and B (2) were isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Their structures were elucidated to be 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glucopyranosyl}]-26-O-[b-D-glucopy- ranosyl]-(25S)-5b-furostane-3b,22a,26-triol 1 and 3-O-[{a-L-rhamnopyranosyl-(14)}{b-D-glu- copyranosyl}]-26-O-[b-D-glucopyranosyl]-22a-methoxy-(25S)-5b-furostane-3b,26-diol 2 on the basis of spectroscopic techniques and chemical methods.
文摘A new furost-20(22)-ene oligoglycoside named as aspacochioside C was isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Its structure was elucidated to be 26-O-b- D-glucopyranosyl-(25S)-5b-furost-20(22)-en-3b,26-diol-3-O-a-L-rhamnopyranosyl-(14)-b-D- glucopyranoside on the basis of spectroscopic techniques including 1D and 2D NMR experiments.
