title: A new cytotoxic and larvicidal himachalenoid, rosanoids and other constituents of Hugonia busseana.
abstract: A new cytotoxic himachalene sesquiterpenoid 4alpha-methoxy-5,9-oxahimachal-9-ene (hugonianene A) which exhibited moderate activity against Anopheles gambiae mosquito larvae after 24 h at a concentration of 0.237 mg mL(-1), and at 48 h and 72 h contact time causing complete larval mortality up to a concentration as low as 0.01369 mg mL(-1), was isolated as the major constituent of the cytotoxic root bark extract of Hugonia busseana. Hugonianene A was obtained together with the hitherto unreported rosane diterpenoid 18-hydroxyrosane, the known rosane diterpenoid hugorosediol, an inseparable mixture of 12-methoxy-13-methylpodocarpa-8,11,13-trien-3,7-dione and 12-methoxy-13-methylpodocarpa-1,8,11,13-tetraen-3,7-dione, and the di-podocarpanoid hugonone B that was previously obtained from H. castaneifolia.
authors: Department of Chemistry, University of Dar es Salaam, Dar es Salaam, Tanzania.
authors: Lilechi D
authors: LD
authors: Baraza
authors: Cosam C
authors: CC
authors: Joseph
authors: Mayunga H H
authors: MH
authors: Nkunya
mesh_terms: D000818:Animals; D000852:Anopheles / Q000187:drug effects*; D000962:Antimalarials / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D001156:Artemia / Q000187:drug effects; D007814:Larva / Q000187:drug effects; D019658:Linaceae / Q000737:chemistry*; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000378:metabolism*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013636:Tanzania
chemical_list: C523933:4alpha-methoxy-5,9-oxahimachal-9-ene; D000962:Antimalarials; D012717:Sesquiterpenes