title: Bioactive constituents from the twigs of Asimina parviflora.
abstract: The EtOH extract of Asimina parviflora (Annonaceae), when subjected to activity-directed fractionation using lethality to brine shrimp, led to the isolation and identification of five bioactive compounds: asimicilone [1], which is a new 2-quinolone alkaloid, 6-cis-docosenamide [2], which is a new amide of a long hydrocarbon chain fatty acid, and three known compounds, asimicin, (+)-syringaresinol, and beta-sitosterol-beta-D- glucopyranoside. The structure determination of the new alkaloid was performed by extensive nmr analyses, including HMQC and HMBC. Selective cytotoxic activities of these compounds in three human solid tumor cell lines are also reported.
authors.affiliation: Department of Medicinal Chemistry and Pharmacognosy, School of Pharmacy and Pharmacal Sciences, Purdue University, West Lafayette, Indiana 47907.
authors.forename: S
authors.initials: S
authors.lastname: Ratnayake
authors.forename: X P
authors.initials: XP
authors.lastname: Fang
authors.forename: J E
authors.initials: JE
authors.lastname: Anderson
authors.forename: J L
authors.initials: JL
authors.lastname: McLaughlin
authors.forename: D R
authors.initials: DR
authors.lastname: Evert
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000494:pharmacology; D033364:Decapoda / Q000187:drug effects; D004354:Drug Screening Assays, Antitumor; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts