Dimethylsulfoxide and acid catalyst promoted cyclizations of methyl 2-deoxy-2-C-(hydroxyalkyl)-α-D-altropyranosides and -arabinofuranosides leading to cis-fused ring cyclic acetals are described.
描述了
二甲基亚砜和酸催化剂促进的甲基2-脱氧-2-C-(羟烷基)-α-D-芦荟
吡喃糖苷和-阿拉伯
呋喃糖苷的环化,导致顺式稠合的环状环状
缩醛。