(-)-delta-N-normethylskytanthine from Tecoma arequipensis.
Bark of Tecoma arequipensis yielded the major alkaloidal component (-)-delta-N-normethylskytanthine whose structure was proven by X-ray diffraction analysis of the N-thiourea derivative. The stereochemistry of 1 at all four centers was enantiomeric with that of skytanthine previously reported from Tecoma stans and Skytanthus acutus. Gc-ms of the crude base fraction indicated the presence of several related alkaloids as very minor constituents.
Harris
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Department of Chemistry, Colorado State University, Fort Collins 80523.
Fixman
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EC
Stermitz
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Castedo
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D000470:Alkaloids / Q000302:isolation & purification*; D055598:Chemical Phenomena; D002621:Chemistry; D008401:Gas Chromatography-Mass Spectrometry; D008958:Models, Molecular; D010568:Peru; D010936:Plant Extracts / Q000032:analysis; D010946:Plants, Medicinal / Q000032:analysis*; D013237:Stereoisomerism; D014197:Trees / Q000032:analysis; D014961:X-Ray Diffraction
D000470:Alkaloids; D010936:Plant Extracts; C056671:N-normethylskytanthine