title: Two new alkaloids from Hornschuchia obliqua.
abstract: The stem and roots of Hornschuchia obliqua provided two new alkaloids, 4,5-didehydroguadiscine and demethoxyguadiscine. Four known alkaloids, roemerine, guadiscine, liriodenine and cleistopholine were also isolated. The structures of the novel compounds were elucidated by spectroscopic analysis, including 2D NMR and MS.
authors.affiliation: Universidade Federal da Paraíba, Laboratório de Tecnologia Farmacêutica, Cx Postal 5009, João Pessoa PB 58051-970, Brazil.
authors.forename: Ivana Maria
authors.initials: IM
authors.lastname: Fechine
authors.forename: J Fechine
authors.initials: JF
authors.lastname: Tavares
authors.forename: M Sobral
authors.initials: MS
authors.lastname: da Silva
authors.forename: J Maria
authors.initials: JM
authors.lastname: Barbosa-Filho
authors.forename: M
authors.initials: M
authors.lastname: de Fátima Agra
authors.forename: Emidio V L
authors.initials: EV
authors.lastname: da-Cunha
mesh_terms: D000470:Alkaloids / Q000737:chemistry*; D029061:Annonaceae; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry*; D018517:Plant Roots; D018547:Plant Stems
chemical_list: D000470:Alkaloids; D010936:Plant Extracts