Triterpene benzoates from the bark of Picramnia teapensis (Simaroubaceae)

• Autor(a) principal: Rodríguez-Gamboa,Tatiana
• Data de Publicação: 2001
• Outros Autores: Fernandes,João B., Rodrigues Filho,Edson, Silva,M. Fátima das G. F. da, Vieira,Paulo C., Barrios Ch.,Mariano, Castro-Castillo,Oscar, Victor,Sandra R., Pagnocca,Fernando C., Bueno,Odair C., Hebling,Maria J. A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000300010
• topic: Triterpene esters; lupanes; Picramnia teapensis; Atta sexdens; Leucoagaricus gongylophorus

Two new benzoic acid esters of triterpene alcohols [lup-20(29)-en-28-oic acid 3alpha,7beta-dibenzoate and 3alpha-hydroxy-lup-20(29)-en-28-oic acid 7beta-benzoate] were isolated from the stem bark of Picramnia teapensis Tul. The structures of these compounds were established on the basis of spectral analyses. Other known compounds, beta-sitosterol, estigmasterol, lupeol and epilupeol, were identified in mixture by GC-MS. The triterpene esters have not shown in-vitro inhibitory effect on the growth of Leucoagaricus gongylophorus (Fisher), referred also as Leucocoprinus gongylophorus (Heim), syn Rozites gongylophora (Möller), the symbiotic fungus cultivated by the leaf-cutting ant Atta sexdens L.