title: Structure elucidation and NMR assignments of two unusual monoterpene indole alkaloids from Psychotria stachyoides.
abstract: Two unusual monoterpene indole alkaloids, stachyoside (1) and nor-methyl-23-oxo-correantoside (2), have been isolated from the aerial parts of Psychotria stachyoides. The structural elucidation of both compounds was performed by the aid of HRESIMS, FT-IR, and 1D- and 2D-NMR techniques including COSY, HSQC, HMBC, and NOESY.
authors.affiliation: Departamento de Química Orgânica e Inorgânica, Centro de Ciências, Universidade Federal do Ceará, CP 12.200, 60.021-970 Fortaleza, CE, Brazil.
authors.forename: Antonia Torres Avila
authors.initials: AT
authors.lastname: Pimenta
authors.forename: Raimundo
authors.initials: R
authors.lastname: Braz-Filho
authors.forename: Piero Giuseppe
authors.initials: PG
authors.lastname: Delprete
authors.forename: Elnatan Bezerra
authors.initials: EB
authors.lastname: de Souza
authors.forename: Edilberto Rocha
authors.initials: ER
authors.lastname: Silveira
authors.forename: Mary Anne Sousa
authors.initials: MA
authors.lastname: Lima
mesh_terms: D026121:Indole Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000592:standards; D015394:Molecular Structure; D035261:Plant Components, Aerial / Q000737:chemistry*; D032069:Psychotria / Q000737:chemistry*; D012015:Reference Standards
chemical_list: D026121:Indole Alkaloids