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Three New Triterpene Saponins from Hemsleya chinensis
Author(s) -
Li ZhenJie,
Chen JianChao,
Sun Yun,
Song NaLi,
Cheng BaoHui,
Lu Lu,
Ma WeiGuang,
Zhou Lin,
Zhang XianMin,
Li ZhongRong,
Qiu MingHua
Publication year - 2009
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.200900060
Subject(s) - chemistry , triterpene , rhizome , oleanolic acid , stereochemistry , triterpenoid , saponin , spectral analysis , terpene , two dimensional nuclear magnetic resonance spectroscopy , botany , medicine , alternative medicine , physics , pathology , quantum mechanics , spectroscopy , biology
Three new triterpenoid saponins, xuedanglycosides A–C ( 1 – 3 , resp.), along with six known ones, were isolated from the rhizomes of Hemsleya chinensis. By detailed analysis of the NMR spectra, by chemical methods, and by comparison with spectral data of known compounds, the structures of new compounds were determined to be 16 α ,23 α ‐epoxy‐2 β ,3 α ,20 β ‐trihydroxy‐10 α ,23 α ‐cucurbita‐5,24‐dien‐11‐on‐2‐yl β ‐ D ‐glucopyranoside ( 1 ), 2 β ,3 α ,16 α ,20 β ‐tetrahydroxycucurbita‐5,25‐diene‐11,22‐dion‐2‐yl β ‐ D ‐glucopyranoside ( 2 ), and oleanolic acid 28‐ O ‐ β ‐xylopyranosyl‐(1→6)‐ O ‐ β ‐glucopyranoside ( 3 ). In addition, hemslecin A 2‐ O ‐ β ‐ D ‐glucopyranoside ( 6 ), hemsamabilinin B ( 7 ), and hemslonin A ( 9 ) were obtained for the first time from this plant.