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Kolavane and kaurane diterpenes from the stem bark of Xylopia aethiopica |
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| Authors: | Choudhury M. Hasan Terence M. Healey Peter G. Waterman |
| Affiliation: | Phytochemistry Research Laboratory, Department of Pharmaceutical Chemistry, University of Strathclyde, Glasgow G1 1XW, U.K. |
| Abstract: | The stem bark of Xylopia aethiopica has yielded four diterpenes, two of them novel. Three of the diterpenes were identified as (?)-kaur-16-en-19-oic acid and its 7-oxo and 7β-hydroxy derivatives. The fourth was the novel kolavane derivative 2-oxo-kolav-3,13-dien-15-oic acid, a type of compound not previously recorded in the Annonaceae. |
| Keywords: | Annonaceae diterpenes 2-oxokolavenic acid (?)-kaur-16-en-19-oic acid 7-oxo-(?)-kaur-16-en-19-oic acid 7β-hydroxy-(?)-kaur-16-en-19-oic acid. |
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