Selective functionalization of 2-oxoallobetulin derivatives |
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| Authors: | Thuc Dinh Ngoc Wim Dehaen |
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| Affiliation: | Molecular Design and Synthesis, Department of Chemistry, University of Leuven, Celestijnenlaan—200F, 3001 Leuven, Belgium |
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| Abstract: | A new series of 2-oxoallobetulin derivatives has been synthesized by using various unique reactions. Site-specific or regio-selective functionalization of those compounds has been investigated. In all cases, the reactions only happened at C-3 position except the synthesis of lactam happened at C-1 position. The intermediates leading to the novel allobetulin derivatives have also been described. |
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| Keywords: | Triterpenoids Fischer indolization Bromination Beckmann rearrangement Claisen rearrangement |
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