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New Steroidal Saponins from the Leaves of Yucca elephantipes
Author(s) -
Zhang Ying,
Yang ChongRen,
Zhang YingJun
Publication year - 2013
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201200586
Subject(s) - chemistry , glycoside , yucca , hydrolysis , stereochemistry , saponin , flavonoid , botany , organic chemistry , medicine , alternative medicine , pathology , biology , antioxidant
Two new spirostanol saponins, namely elephanosides G and H ( 1 and 2 , resp.) were isolated from the leaves of Yucca elephantipes (Agavaceae), together with the two known furostanol saponins 3 and 4 and the six known flavonoid O ‐ and C ‐glycosides 5 – 10 . The new structures were elucidated as (3 β ,25 S )‐spirost‐5‐en‐3‐yl O ‐ β ‐ D ‐glucopyranosyl‐(1→3)‐ O ‐ β ‐ D ‐glucopyranosyl‐(1→4)‐ β ‐ D ‐galactopyranoside ( 1 ) and (3 β ,5 β ,25 R )‐3‐[(2‐ O ‐ β ‐ D ‐glucopyranosyl‐ β ‐ D ‐galactopyranosyl)oxy]spirostan‐12‐one ( 2 ) on the basis of detailed spectroscopic analysis and acidic hydrolysis.