Phenyl glycosides from the leaves of Flacourtia indica (Burm. f.) Merr (Salicaceae)
作者:Phuc-Dam Nguyen、Charlotte Sayagh、Georges Massiot、Catherine Lavaud
DOI:10.1016/j.phytochem.2021.112891
日期:2021.10
Thirteen phenolic glycosides, together with fourteen various known compounds, were isolated from the methanolic extract of leaves of Flacourtia indica. Twelve of these were composed of gentisyl or salicyl alcohols, glycosylated on the phenol and acylated on the primary alcohol with various more or less oxidized forms of pyrocatechuic acid. A number of positions on the glucose or on the acid were further
从Flacourtia indica叶子的甲醇提取物中分离出 13 种酚苷以及 14 种各种已知化合物. 其中十二个由龙胆醇或水杨醇组成,在苯酚上糖基化,在伯醇上用各种或多或少氧化形式的焦儿茶酸酰化。葡萄糖或酸上的许多位置被苯甲酸或肉桂酸进一步酰化。除此之外,还分离了苯基丙烷的葡糖苷。大体结构通过光谱手段阐明,包括 1D 和 2D NMR 实验和 HR-ESI-MS 分析。其中一些结构,例如木糖蛋白,之前已经描述过,但事实证明,由于文献中没有关于绝对构型的明确数据,很难确定它们的确切身份。