title: Anti-HIV and cytotoxic alkaloids from Buchenavia capitata.
abstract: The anti-HIV activity in the organic solvent extract of leaves of Buchenavia capitata was traced to a series of known flavonoid alkaloids, which represent a new chemotype for anti-HIV activity. The 13C-nmr assignments for this series of compounds have been revised. O-Demethylbuchenavianine [1] was the most active compound of the series but produced only moderate cytoprotective effects against HIV in cultured human lymphoblastoid (CEM-SS) cells. Compound 1 was cytotoxic also in the NCI human disease-oriented in vitro tumor screening panel and produced a pattern of modest differential cellular sensitivity.
authors.affiliation: Laboratory of Drug Discovery Research and Development, National Cancer Institute, Frederick, Maryland 21702-1201.
authors.forename: J A
authors.initials: JA
authors.lastname: Beutler
authors.forename: J H
authors.initials: JH
authors.lastname: Cardellina
authors.forename: J B
authors.initials: JB
authors.lastname: McMahon
authors.forename: M R
authors.initials: MR
authors.lastname: Boyd
authors.forename: G M
authors.initials: GM
authors.lastname: Cragg
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000494:pharmacology*; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000494:pharmacology*; D000998:Antiviral Agents / Q000737:chemistry / Q000494:pharmacology*; D004273:DNA, Neoplasm / Q000378:metabolism; D004279:DNA, Viral / Q000187:drug effects; D017320:HIV Protease Inhibitors; D015497:HIV-1 / Q000187:drug effects*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000494:pharmacology; D010946:Plants, Medicinal / Q000737:chemistry*; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000470:Alkaloids; D000972:Antineoplastic Agents, Phytogenic; D000998:Antiviral Agents; D004273:DNA, Neoplasm; D004279:DNA, Viral; D017320:HIV Protease Inhibitors; D010936:Plant Extracts