title: Antiplatelet aggregation constituents from Annona purpurea.
abstract: Bioactivity-directed fractionation led to the isolation of 19 compounds, including three oxoaporphines, oxopurpureine (5), oxonuciferine (6), and oxoglaucine (7); three aporphines, (+)-predicentrine (8), (-)-glaucine (9), and thalbaicalidine (10); one aporphine sensu stricto, N-formyl-purpureine (11); one proaporphine, glaziovine; one phenanthrene, thalicpureine (12); two 6a,7-dehydroaporphines, dehydrolirinidine (13) and 7-hydroxy-dehydroglaucine (14); four flavonoids, quercetin-3-O-rhamnoside, kaempferol-3-O-rhamnoside, isorhamnetin-3-O-rhamnoside, and tanarixetin-3-O-rhamnoside; one purine, adenine; one lactam amide, squamolone; and two steroids, beta-sitosterol and beta-sitosterol-beta-D-glucoside from the MeOH extract of the leaves of Formosan Annona purpurea. Among them, 11-14 were characterized as new compounds and alkaloids, 5-8, 10, and 12-14 exhibited significant antiplatelet aggregation activity.
authors.affiliation: Graduate Institute of Natural Products, Kaohsiung Medical College, Kaohsiung, Taiwan, Republic of China, and Pharmacological Institute, College of Medicine, National Taiwan University, Taipei, Taiwan, Republic of China.
authors.forename: F R
authors.initials: FR
authors.lastname: Chang
authors.forename: J L
authors.initials: JL
authors.lastname: Wei
authors.forename: C M
authors.initials: CM
authors.lastname: Teng
authors.forename: Y C
authors.initials: YC
authors.lastname: Wu
mesh_terms: D000470:Alkaloids / Q000302:isolation & purification* / Q000494:pharmacology; D000818:Animals; D001058:Apomorphine / Q000031:analogs & derivatives* / Q000302:isolation & purification / Q000494:pharmacology; D001060:Aporphines / Q000302:isolation & purification* / Q000494:pharmacology; D002851:Chromatography, High Pressure Liquid; D066298:In Vitro Techniques; D010946:Plants, Medicinal / Q000737:chemistry*; D010975:Platelet Aggregation Inhibitors / Q000302:isolation & purification* / Q000494:pharmacology; D011817:Rabbits; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000470:Alkaloids; D001060:Aporphines; D010975:Platelet Aggregation Inhibitors; C117231:oxopurpureine; C069090:lysicamine; C111587:oxoglaucine; D001058:Apomorphine