title: Macroline-sarpagine and macroline-pleiocarpamine bisindole alkaloids from Alstonia angustifolia.
abstract: Nine bisindole alkaloids, comprising four belonging to the macroline-sarpagine group, and five belonging to the macroline-pleiocarpamine group, were isolated from the stem-bark extracts of Alstonia angustifolia (Apocynacea). Their structures were established using NMR and MS analyses.
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
authors.forename: Shin-Jowl
authors.initials: SJ
authors.lastname: Tan
authors.forename: Kuan-Hon
authors.initials: KH
authors.lastname: Lim
authors.forename: G
authors.initials: G
authors.lastname: Subramaniam
authors.forename: Toh-Seok
authors.initials: TS
authors.lastname: Kam
mesh_terms: D000470:Alkaloids / Q000737:chemistry*; D031051:Alstonia / Q000737:chemistry*; D026121:Indole Alkaloids / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D000078183:Oxindoles
chemical_list: D000470:Alkaloids; D026121:Indole Alkaloids; D000078183:Oxindoles; C512190:macroline; C114765:pleiocarpamine; C475809:sarpagine