Complete assignments of 1H and 13C NMR spectroscopic data for three new stigmastane glycosides from Vernonia cumingiana |
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| Authors: | Maorong Suo Junshan Yang |
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| Institution: | Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100094, China |
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| Abstract: | Three new steroidal saponins, Vernoniosides S1 ( 1 ), Vernoniosides S2 ( 2 ) and Vernoniosides S3 ( 3 ) were isolated from the stem of Vernonia cumingian. Their chemical structures were elucidated on the basis of MS, NMR spectroscopic and chemical analysis. Complete assignment of 1H and 13C NMR spectroscopic data were achieved by 1D and 2D NMR experiments (HMQC, HMBC, ROESY). Copyright © 2008 John Wiley & Sons, Ltd. |
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| Keywords: | NMR 1H NMR 13C NMR 1D NMR 2D NMR Vernonia cumingian steroidal saponins Vernoniosides S1 Vernoniosides S2 Vernoniosides S3 |
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