Isolation and Structural Determination of Triterpenoid Glycosides from the Aerial Parts of Alsike Clover (Trifolium hybridum L.)
作者:Andy J. Pérez、Mariusz Kowalczyk、Ana M. Simonet、Francisco A. Macías、Wiesław Oleszek、Anna Stochmal
DOI:10.1021/jf305541e
日期:2013.3.20
Five azukisapogenol glycosides (1–5) have been isolated from the aerial parts of alsike clover (Trifolium hybridum L.), and their structures were elucidated by combined spectroscopic, spectrometric (1D and 2D NMR; HRESIMS, ESI–MS/MS), and chemical methods. Three of them are new compounds and were identified as 3-O-[-α-l-arabinopyranosyl(1→2)]-β-d-glucuronopyranosyl azukisapogenol (1), 3-O-[-β-d-gl
五次azukisapogenol甙(1 - 5)已经从杂三叶(的地上部分分离杂种车轴草属),和它们的结构经组合的光谱,光谱阐明(1D和2D NMR; HRESIMS,ESI-MS / MS),和化学方法。其中三个是新化合物,分别被确定为3- O -[-α- 1-阿拉伯吡喃糖基(1→2)]-β- d-葡萄糖醛酸吡喃二酚(1),3- O -[-β- d-葡萄糖醛酸吡喃糖基( 1→2)-β- d -glucuronopyranosyl] -27- ö -β- D-吡喃葡萄糖基azukisapogenol(2),和3-ö - [ - α-升-arabinopyranosyl(1→2)-β- d -glucuronopyranosyl] -27- ö -β- D-吡喃葡萄糖基azukisapogenol(3)。剩余的两个(4,5)是已知的化合物,但以前没有被描述为属的皂苷成分车轴。另外,在此属中首次