to form principally 2-deoxy-beta-glycosides. This method was applied to the synthesis of the 2-(methylphenylthio)-2'-phenylthio derivative (22) of methyl O-(4-O-benzyl-2,6-dideoxy-beta-D-arabino- hexopyranosyl)-(1-->3)-3,4-di-O-benzyl-2,6-dideoxy-2,6-beta-D-arabino- hexopyranoside, the C'D' ring analog of an aureolic acid disaccharide. The condensation of 1,5-anhydro-2,6-dideoxy-D-arabino-hex-1-enitol
                                    芳基双(芳
硫基)s盐已被用于使糖基朝亲核加成反应活化,从而主要形成2-脱氧-β-糖苷。该方法用于甲基O-(4-O-苄基-2,6-二脱氧-β-
D-阿拉伯糖基-己基
吡喃糖基)-(的2-(甲基苯
硫基)-2'-苯
硫基衍
生物(22)的合成1-> 3)-3,4-二-O-苄基-2,6-二脱氧-2,6-β-
D-阿拉伯糖基己
吡喃糖苷,一种
金黄色酸二糖的C'D'环类似物。在苯基双(苯
硫基)s盐的存在下,1,5-脱
水-2,6-二脱氧-
D-阿拉伯糖醇-己糖-1-烯醇与
甲醇的缩合导致形成第一个β-糖苷键。将获得的甲基6-脱氧
葡糖苷在HO-3处脱保护,得到2-
硫苯基取代的2,6-二脱氧β-
葡糖苷。再加上1,5-脱
水3