title: Alkaloids from Porcelia macrocarpa.
abstract: Three new azaanthracene alkaloids, 6,7-dimethoxycleistopholine (3), 5-hydroxy-6-methoxycleistopholine (4), and 5-hydroxy-6,7-dimethoxycleistopholine (5), along with 14 known alkaloids, including the new natural product 6-methoxycleistopholine (2), were isolated from a CH2Cl2 extract of the branches of Porcelia macrocarpa.
authors: Instituto de Química, Universidade de São Paulo, São Paulo, São Paulo, 05508-900 Brazil.
authors: M H
authors: MH
authors: Chaves
authors: L A
authors: LA
authors: Santos
authors: J H
authors: JH
authors: Lago
authors: N F
authors: NF
authors: Roque
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*; D008956:Models, Chemical; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D000470:Alkaloids