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Five new pregnane glycosides from the stems of Marsdenia tenacissima
Zeng-Hua Xia1, Shi-Long Mao, Ai-Na Lao
1Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.
Journal of Asian Natural Products Research
|May 31, 2011
Abstract:
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 (1)H and (13)C NMR, COSY, TOCSY, ROESY, and FABMS experiments.
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