Flavonoids and a neolignan glucoside from Guarea macrophylla (Meliaceae)
AUTOR(ES)
Pereira, Cristiane, Barreto Júnior, Cleber Bomfim, Kuster, Ricardo Machado, Simas, Naomi Kato, Sakuragui, Cassia Mônica, Porzel, Andrea, Wessjohann, Ludger
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2012
RESUMO
This work describes the phytochemical study of the methanol extract obtained from leaves of Guarea macrophylla, leading to the isolation and identification of three flavonoid glycosides (quercetin 3-O-β-D-glucopyranoside, quercetin 3-O-b-D-galactopyranoside, kaempferol 7-O-β-D-glucopyranoside) and a neolignan glucoside, dehydrodiconiferyl alcohol-4-β-D-glucoside. All compounds were identified by a combination of spectroscopic methods (¹H, 1D, 2D NMR, 13C and UV), ESI-MS and comparison with the literature data. This is the first report of flavonoids in the genus Guarea and of a neolignan glucoside in the Meliaceae family.
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