聚合甲醛 、
ethyl 4-amino-2,3,4,6-tetradeoxy-α-D-erythro-hexopyranoside hydrogen toluene-p-sulphonate 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 为溶剂,
以81%的产率得到ethyl 2,3,4,6-tetradeoxy-4-methylamino-α-D-erythro-hexopyranoside hydrogen toluene-p-sulphonate