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Three New Pregnane Glycosides from Marsdenia tinctoria
Author(s) -
Gao ZhuLin,
He HongPing,
Di YingTong,
Fang Xin,
Li ChunShun,
Zhang Qiang,
Zhao PeiJi,
Li ShunLin,
Hao XiaoJiang
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.200900072
Subject(s) - pregnane , chemistry , glycoside , heteronuclear single quantum coherence spectroscopy , stereochemistry , two dimensional nuclear magnetic resonance spectroscopy
Three new pregnane glycosides, tinctorosides A–C ( 1 – 3 , resp.), together with one known pregnane glycoside, stephanoside B ( 4 ), were isolated from the stems of Marsdenia tinctoria R. Br . (Asclepiadaceae). Their structures were elucidated by extensive spectral methods, especially 2D‐NMR experiments ( 1 H, 1 H‐COSY, HSQC, HMBC, TOCSY, HSQC‐TOCSY, and ROESY), and chemical evidence.
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