Alkaloids from Alstonia angustifolia.
Six new alkaloids, viz., alstolactone, affinisine oxindole, lagumicine, N(4)-demethylalstonerine, N(4)-demethylalstonerinal, and 10-methoxycathafoline N(4)-oxide, in addition to 36 other known alkaloids, were obtained from the leaf extract of Alstonia angustifolia var. latifolia. The structures of the new alkaloids were determined using NMR and MS analysis.
Kam
Toh-Seok
TS
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Choo
Yeun-Mun
YM
D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D031051:Alstonia / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
D000470:Alkaloids; D010936:Plant Extracts