2-[1,1-dimethyl-2(2-phenoxyacetamido)ethylamino]-3',4'-dihydroxyacetophenone 、
1,1-dimethyl-2-(2-phenoxyacetamido)ethylamine 、
2-bromo-3',4'-bis(benzyloxy)acetophenone 、
三甲基乙酰氯 、 2-[1,1-dimethyl-2-(2-phenoxyacetamido)ethylamino]-3',4'-bis(benzyloxy)acetophenone hydrobromide 以
2-[1,1-dimethyl-2-(2-phenylacetamido)ethyl]amino-3',4'-bis(benzyloxy)acetophenone hydrobromide 、
三氟乙酸 为溶剂,
以85%的产率得到2-[1,1-dimethyl-2-(2-phenoxyacetamido)ethylamino]-3',4'-bispivaloyloxy acetophenone trifluoroacetate