A single chalcone and additional rotenoids from Lonchocarpus nicou |
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Authors: | Martin A Lawson Albert J Chulia |
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Institution: | a Laboratoire de Pharmacognosie, UPRES EA 4021 ‘Biomolécules et Thérapies Antitumorales’ Faculté de Pharmacie, 2, Rue Docteur Marcland F-87025 Limoges Cedex, France b Département de Chimie, Faculté des Sciences et Techniques 123, Avenue A. Thomas F-87060 Limoges Cedex, France |
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Abstract: | The lipophile extract of Lonchocarpusnicou roots afforded the new pyranochalcone 3-O-methylabyssinone A as well as the new rotenoids 7′-hydroxytephrosin, and 7′-nor-6′-oxo-2′,3′-dehydrorotenone, both compounds occurring with the known 7′-hydroxydeguelin and 7′-nor-6′-oxo-2′,3′-dehydro-12aβ-hydroxyrotenone. Furthermore, two rotenoid epoxides previously reported as resulting from the direct oxidative conversion of rotenone and 12aβ-hydroxyrotenone, respectively, were isolated for the first time from a plant source. All the structures were established on the basis of UV, MS, and NMR data. |
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Keywords: | Fabaceae Millettieae Lonchocarpus nicou 3-O-Methylabyssinone A 7&prime -Hydroxydeguelin 7&prime -Hydroxytephrosin 7&prime -Nor-6&prime -oxo-2&prime 3&prime -dehydrorotenone 7&prime -Nor-6&prime -oxo-2&prime 3&prime -dehydro-12aβ-hydroxyrotenone (6&prime S)-6&prime 7&prime -Epoxyrotenone (6&prime R)-6&prime 7&prime -Epoxy-12aβ-hydroxyrotenone |
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