N-o-nitrobenzenesulfonyl (nosyl) 3,4-epimino derivatives with d-allo, d-galacto, and d-talo configurations have been prepared via NaBH(4) reduction of suitably substituted azido tosylates. The benefits and limitations of this method over the classical LiAlH(4) reduction method are discussed.
从1,6-脱
水-β-d-
吡喃
葡萄糖1(左旋
葡聚糖)开始,已通过NaBH(n-H)制备了具有d-allo,d-半
乳糖和d-talo构型的无
硝基苯磺酰基(nosyl)3,4-表胺基衍
生物。 4)还原适当取代的
叠氮基
甲苯磺酸酯。讨论了该方法优于经典LiAlH(4)还原方法的优点和局限性。