In the presence of a catalyst generated from SnCl4 and a silver salt, various 2-amino-2-deoxy-α-D-glucopyranosides or galactopyranosides are stereoselectively synthesized in good yields with high stereoselectivities through anomerization step starting from 1,3,4,6-tetra-O-acetyl-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-β-D-glucopyranose or galactopyranose and alkyl trimethylsilyl ethers, respectively.
在 SnCl4 和
银盐生成的催化剂存在下,通过从 1,3,4 开始的异构化步骤,立体选择性地以良好的产率和高立体选择性合成了各种 2-
氨基-2-脱氧-α-
D-吡喃葡萄糖苷或
吡喃半
乳糖苷,分别为6-四-O-乙酰基-2-脱氧-2-(2,2,2-三
氯乙氧基羰基
氨基)-β-
D-吡喃葡萄糖或
吡喃半
乳糖和烷基三甲基甲
硅烷基醚。