Psychollatine, a glucosidic monoterpene indole alkaloid from Psychotria umbellata.
A monoterpene indole alkaloid, psychollatine ( 1), was isolated from Psychotria umbellata leaves. Its structure was characterized by interpretation of spectroscopic data and by comparison of its NMR data with those of croceaine A ( 2) from Palicourea crocea. The configuration of psychollatine ( 1) was established by NOE difference and circular dichroism (CD) techniques, while its conformation was evaluated through molecular modeling studies and NMR coupling constants.
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Faculdade de Farmácia, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Ipiranga, 2752, Porto Alegre, 90610-000, Brazil.
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D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D001938:Brazil; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D026121:Indole Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D032069:Psychotria / Q000737:chemistry*
D000470:Alkaloids; D006027:Glycosides; D026121:Indole Alkaloids; C499739:psychollatine