Licanol, um novo flavanol, e outros constituintes de Licania macrophylla Benth

AUTOR(ES)

Medeiros, Fernando Antônio de, Medeiros, Alessandra A. N., Tavares, Josean Fechine, Barbosa Filho, José Maria, Lima, Edeltrudes de Oliveira, Silva, Marcelo Sobral da

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2012

RESUMO

The phytochemical investigation of L. macrophylla Benth led to the isolation of a new flavanol named licanol: (-)-4'-O-methyl-epigallocatechin-3'-O-α-L-rhamnoside, along with nine known compounds, identified as: (-)-4'-O-methyl-epigallocatechin, pheophytin A, 13²-hydroxy-(13²-S)-pheophytin A, pheophytin B, sitosterol, stigmasterol, sitosterol-β-O-glucoside, betulinic alcohol and oleanolic acid. The structures were established based on IR, HR-ESI-MS, and NMR spectrometric data analysis with the aid of 2D techniques. The methanolic extracts of leaves and stem bark as well as the compounds licanol, 13²-hidroxi-(13²-S)-feofitina A, and betulinic alcohol demonstrated antimicrobial activity against several bacterial strains.

Documentos Relacionados

• Constituintes químicos de licania tomentosa Benth. (Chrysobalanaceae)
• Outros constituintes isolados de Licania arianeae (Chrysobalanaceae)
• Outros constituintes químicos de Diplotropis ferruginea Benth. (Fabaceae)
• Sesquiterpenos e outros constituintes das folhas de Pterodon pubescens Benth (Leguminosae)
• Estudo FitoquÃmico de Licania rÃgida Benth (Chrysobalanaceae)