Resin glycosides. I. isolation and structure elucidation of orizabin-I. II. IlI and IV, genuine resin glycosides from the root of Ipomoea orizabensis
作者:N. Noda、M. Ono、K. Miyahara、T. Kawasaki、M. Okabe
DOI:10.1016/s0040-4020(01)81671-9
日期:1987.1
Four compounds named orizabin I, II, III and IV, which are ether-soluble and correspond to the so-called resin glycoside “jalapin” were isolated, for the first time, from the root of Ipomoea orizabensis (Convoi vul aceae). Unlike the presumption advocated by Mannich and Schumann for the ether-insoluble glycoside “convoivulin” from I. purgá, all of them were respectively a monomer of hydroxyfatty acid
首次从豆荚番薯(Convoi vul aceae)的根中分离出四种可溶于醚的,分别对应于所谓的树脂苷“ Jalapin”的名为Orizabin I,II,III和IV的化合物。不同于曼尼希(Mannich)和舒曼(Schumann)提出的来自普尔加岛(I.purgá)的醚不溶性糖苷“ convoivulin”的推定,它们全部分别是羟基脂肪酸寡糖苷的单体,其中糖部分被有机酸部分酰化,并且还与汽车结合糖苷配基的y基团形成大环酯。在最后一步中,通过高分辨率制备型HPLC成功地实现了它们在纯状态下的分离。这些结构是根据化学和光谱数据确定的,并代表真正的成分。