7a-O-methyldeguelol, a modified rotenoid with an open ring-C, from the roots of Derris trifoliata |
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Authors: | Yenesew Abiy Mushibe Eluid K Induli Martha Derese Solomon Midiwo J O Kabaru Jacques M Heydenreich Matthias Koch Andreas Peter Martin G |
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Affiliation: | Department of Chemistry, University of Nairobi, P.O. Box 30197, Nairobi, Kenya. ayenesew@uonbi.ac.ke |
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Abstract: | From the acetone extract of the roots of Derris trifoliata an isoflavonoid derivative, named 7a-O-methyldeguelol, a modified rotenoid with an open ring-C, representing a new sub-class of isoflavonoids (the sub-class is here named as rotenoloid), was isolated and characterised. In addition, the known rotenoids, rotenone, deguelin and alpha-toxicarol, were identified. The structures were determined on the basis of spectroscopic evidence. Rotenone and deguelin were identified as the larvicidal principles of the acetone extract of the roots of Derris trifoliata. |
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Keywords: | Derris trifoliata Leguminosae Roots Rotenoids Rotenoloid 7a-O-methyldeguelol Conformation Energy calculation Mosquito Larvicides Culex quinquefasciatus |
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