Kaempferol 3-O-[2′′,3′′- and 2′′,4′′-di-O-(E)-p-coumaroyl]-α-l-rhamnopyranoside, two acylated flavonol 3-O-glycosides with potent inhibitory activity against methicillin-resistant Staphylococcus aureus, were synthesized for the first time, employing glycosyl o-cyclopropylethynylbenzoates as donors and Ph3PAuNTf2 as a catalyst for the construction of the flavonol glycosidic linkages.
首次合成了两种酰化的
黄酮醇3-O-糖苷,即
山柰酚3-O-[2′′,3′′-和2′′,4′′-二-O-(E)-对香豆酰]-α-
L-鼠李糖苷,它们具有强烈的抑制耐
甲氧西林金黄色葡萄球菌的活性。合成过程中采用糖基O-环丙基
乙炔基
苯甲酸酯作为供体,并使用Ph3PAuNTf2作为催化剂来构建
黄酮醇糖苷键。