title: Anti-platelet aggregation alkaloids and lignans from Hernandia nymphaeifolia.
abstract: A new aporphine, N-(N-methylcarbamoyl)-O-methyl-bulbocapnine (1), together with seven known compounds, (-)-5'-methoxypodorhizol (2), a mixture of beta-sitosterone (3) and stigmasta-4,22-dien-3-one (4), a mixture of 3 beta-hydroxystigmast-5-en-7-one (5) and 3 beta-hydroxystigmasta-5,22-dien-7-one (6), and a mixture of 6 alpha-hydroxystigmast-4-en-3-one (7) and 6 alpha-hydroxystigmasta-4,22-dien-3-one (8), were isolated in continuing studies on the trunk bark of Formosan Hernandia nymphaeifolia. The structures of these compounds were determined through spectral analyses. In addition, the previously reported six alkaloids, laurotetanine, oxohernagine, thalicarpine, reticuline, (+)-vateamine-2'-beta-N-oxide, (+)-hernandaline and six lignans, (+)-epiaschantin, (+)-epimagnolin, (+)-epiyangambin, (-)-hernone, (-)-yatein, (-)-deoxypodophyllotoxin were demonstrated to have anti-platelet aggregation activity.
authors.affiliation: Department of Pharmacy, Tajen Institute of Technology, Pingtung, Taiwan, Republic of China.
authors.forename: J J
authors.initials: JJ
authors.lastname: Chen
authors.forename: Y L
authors.initials: YL
authors.lastname: Chang
authors.forename: C M
authors.initials: CM
authors.lastname: Teng
authors.forename: I S
authors.initials: IS
authors.lastname: Chen
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000818:Animals; D066298:In Vitro Techniques; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D010975:Platelet Aggregation Inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D011817:Rabbits; D013057:Spectrum Analysis; D014197:Trees / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D017705:Lignans; D010975:Platelet Aggregation Inhibitors