4.4 Article

Five new pregnane glycosides from the stems of Marsdenia tenacissima

Journal

JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH
Volume 13, Issue 6, Pages 477-485

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/10286020.2011.570263

Keywords

Marsdenia tenacissima; Asclepiadaceae; pregnane glycoside; Marstenacissides E; F; G; H; I

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Activity-guided fractionation of the stems of Marsdenia tenacissima led to the isolation of five new pregnane glycosides, namely marstenacissides E (1), F (2), G (3), H (4), and I (5). Their structures were determined on the basis of 1H and 13C NMR, COSY, TOCSY, ROESY, and FABMS experiments.

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