Larvicidal diterpenes from Pterodon polygalaeflorus.

Autor(es): De Omena M C; Bento E S; De Paula J E; Sant'Ana A E G

Resumo: Ethanolic extract from seeds of Pterodon polygalaeflorus (Benth) has been shown to possess significant larvicidal activity against the mosquito Aedes aegypti. Bioassay-guided fractionation of the extract led to the isolation and characterization of the know diterpenoid furans 6alpha-hydroxyvouacapan-7beta,17beta-lactone (1), 6alpha,7beta-dihydroxyvouacapan- 17beta-oic acid (2) and methyl 6alpha,7beta-dihydroxyvouacapan-17beta-oate (3). The structures were established from infrared (IR), ultraviolet (UV), 1H-nuclear magnetic resonance (NMR), 13C-NMR, and mass spectral data: full NMR assignments are presented for compounds 1-3 and the diacetyl derivative of 3. Compounds 1-3 exhibited LC50 values of 50.08, 14.69, and 21.76 microg/mL against fourth-instar Aedes aegypti larvae.

Palavras-Chave: Diterpenes; Larvicidal; Activities; Aedes aegypti; Pterodon polygalaeflorus

Imprenta: Vector Borne and Zoonotic Diseases, v. 6, n. 2, p. 216-222, 2006

Identificador do objeto digital: 10.1089/vbz.2006.6.216

Descritores: Aedes aegypti - Public health

Data de publicação: 2006