Two New Furostanol Glycosides from Asparagus cochinchinensis

来源 :Chinese Chemical Letters | 被引量 : 0次 | 上传用户:jyjs1234
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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. Two new furostanol oligoglycosides named aspacochioside A (1) and B (2) were isolated from the roots of Asparagus cochinchinensis (Lour.) Merr .. Their structures were elucidated to be 3-O- [{aL-rhamnopyranosyl- b14-furostane-3b, 22a, 26-triol 1 and 3-O - [{aL-rhamnopyranosyl- } b-glucopyranosyl] -22a-methoxy- (25S) -5b-furostane-3b, 26-diol 2 on the basis of spectroscopic techniques and chemical methods.
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