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Steroidal glycosides from Caralluma umbellata |
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| Authors: | Olaf Kunert Nebojsa Simic Earla Ravinder Belvotagi Venkatrao Adavi Rao Bobbala Ravi Kumar Robert Michael Alex Doris Kuehnelt Achanta Venkata Narasimha Appa Rao |
| Affiliation: | 1. Institute of Pharmaceutical Chemistry and Pharmaceutical Technology, University of Graz, Universitaetsplatz 1, A-8010 Graz, Austria;2. University College of Pharmaceutical Sciences, Kakatiya University, Warangal - 506 009, A.P., India;3. Institute of Chemistry, Analytical Chemistry, University of Graz, Heinrichstrasse 28 Universitaetsplatz 1, A-8010 Graz, Austria |
| Abstract: | A new caralumagenin bisdesmosidic glycoside (carumbelloside VI), the new pregnene-type steroid bourcergenin, and four new tetrosides of boucergenin (umbellosides I–IV) were isolated from the whole plant of Caralluma umbellata. Their structures were elucidated by extensive NMR spectroscopic studies devoid of any derivatisation. |
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