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Three New Pregnane Glycosides from Marsdenia tinctoria

✍ Scribed by Zhu-Lin Gao; Hong-Ping He; Ying-Tong Di; Xin Fang; Chun-Shun Li; Qiang Zhang; Pei-Ji Zhao; Shun-Lin Li; Xiao-Jiang Hao

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
166 KB
Volume
92
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

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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