Tannins and related polyphenols of euphorbiaceous plants. V. Euphorbin C, an equilibrated dimeric dehydroellagitannin having a new tetrameric galloyl group.
摘要:
Euphorbin C (5)是新型二聚性可水解单宁的一员,已从大戟属植物Euphorbia hirta L.中分离出来。在其分子中,具有1C4葡萄糖吡喃糖核心的单体可水解单宁单元与一种平衡的去氢六羟基二苯酰基团酯化,另一个单体单元则具有4C1葡萄糖核心,这两者通过一种新的Galloyl四聚体——Euphorbinoyl基团的酯键连接在一起。