title: Alkaloids and procyanidins of an Uncaria sp. from Peru.
abstract: The alkaloid and procyanidin composition of Uncaria sp. from eastern Peru, used in folk medicine was studied. Five alkaloids have been separated and identified as pteropodine, speciophylline, isopteropodine, uncarine F and isomytraphylline, all belonging to the oxindole group characteristic of the Rubiaceae. Moreover (--) epicatechin and four dimeric procyanidins A1, B1, B2 and B4 have been shown to constitute the polyphenolic fraction of the plant extract.
mesh_terms: D000470:Alkaloids / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D010568:Peru; D010946:Plants, Medicinal; D013055:Spectrophotometry, Infrared
chemical_list: D000470:Alkaloids