Cabralea eichleriana dc. (meliaceae)—I structure and stereochemistry of wood extractives |
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| Authors: | MM Rao H Meshulam R Zelnik D Lavie |
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| Institution: | 1. Department of Organic Chemistry, The Weizmann Institute of Science, Rehovot, Israel;2. Serviço de Quimica Organica, Institute Butantan, São-Paulo, Brasil |
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| Abstract: | From Cabralea eichleriana DC. (Meliaceae) nine compounds having a dammarane skeleton have been isolated and identified. They are cabraleone 2, ocotillone 3, cabraleadiol 4a, cabralealactone 5, cabraleahydroxylactone 6a, eichlerianic acid 7a, shoreic acid 8a, dammarenolic acid 9a and eichlerialactone 10a. The only limonoid present is fissinolide1. Compounds 7a and 10a are hereby reported for the first time as occurring in Nature. Configurations of ocotillone and cabraleone are revised and have been assigned 20S, 24S and 20S, 24R respectively. |
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