Flavonoids and a neolignan glucoside from Guarea macrophylla (Meliaceae)

Química Nova

Wessjohann, Ludger¹  Leibniz Institute of Plant Biochemistry, Germany¹  Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil¹  Kuster, Ricardo Machado¹  Simas, Naomi Kato¹  Barreto Júnior, Cleber Bomfim¹  Pereira, Cristiane¹  Porzel, Andrea¹  Sakuragui, Cassia Mônica¹ 

关键词: Guarea macrophylla;    dehydrodiconiferyl alcohol-;    4-;    β;    -;    D-;    glucoside;    flavonoid glycosides.;   

DOI  :  10.1590/S0100-40422012000600010

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown