Three dihydroisocoumarin glucosides from Hydrangea macrophylla subsp. serrata
作者:Toshihiro Hashimoto、Motoo Tori、Yoshinori Asakawa
DOI:10.1016/s0031-9422(00)82497-8
日期:1987.1
Abstract Three new dihydroisocoumarin glucosides, macrophyllosides A, B and C were obtained from dry leaves of Hydrangea macrophylla subsp. serrata, together with the previously known hydrangenol 8-β-glucoside. Using NMR and CD techniques and some chemical transformation, the structures were elucidated as (3S)-3′,4′,5′-trimethoxyphenyl-8-β- D -glucopyranosyl dihydroisocoumarin, (3R and (3S)-3′,5′-
摘要 从大叶绣球亚种的干叶中获得了三种新的二氢异香豆素糖苷,大叶苷A、B和C。锯齿,连同先前已知的 hydrangenol 8-β-glucoside。使用NMR和CD技术以及一些化学转化,结构被阐明为(3S)-3',4',5'-三甲氧基苯基-8-β-D-吡喃葡萄糖基二氢异香豆素,(3R和(3S)-3',5 '-二甲氧基-4'-羟基苯基-8-β-D-吡喃葡萄糖基二氢异香豆素.CD实验表明,八氢紫杉醇8-β-葡萄糖苷是3S-和3R-立体异构体的混合物。