作者:Bo-Yi Fan、Jian-Guang Luo、Yu-Cheng Gu、Ling-Yi Kong
DOI:10.1016/j.tet.2014.01.068
日期:2014.3
Two new resin glycosides, cuses 3 (1) and 4 (2), were initially obtained from the seeds of Cuscuta chinensis. Both of them contained a reducing glucose unit, and thus existed as a pair of isomers. In order to solve the existing problem of tautomerism, the remanent resin glycoside fraction was converted into aminoalditol derivatives with p-anisidine, and then another eight new resin glycosides cuses
两种新的树脂糖苷,cuses 3(1)和4(2),最初是从Cuscuta chinensis的种子中获得的。它们都含有还原性葡萄糖单元,因此以一对异构体的形式存在。为了解决互变异构存在的问题,室温下的剩余树脂糖苷的级分转化为aminoalditol衍生物与p -anisidine,然后另外八个新树脂甙cuses 5-12(3 - 10)进一步分离。提示7–12(6 – 10)被认为是通过两个酰化的寡糖的糖基化产生的,因此被表征为醚型树脂糖苷二聚体。通过光谱学和化学方法的结合阐明了它们的结构,包括绝对立体化学。化合物3 - 10表现出细胞毒活性朝向MCF-7,SMMC-7721,并与IC MG-63细胞系中50个值范围从8.72到59.35微克/毫升。