乙基叠氮基甲酸酯 、
N,N-Dicyclohexyl-C-[(1R,2S,4S)-7,7-dimethyl-2-((E)-1-trimethylsilanyloxy-propenyloxy)-bicyclo[2.2.1]hept-1-yl]-methanesulfonamide 以
正戊烷 为溶剂,
以38%的产率得到(R)-2-Ethoxycarbonylamino-propionic acid (1R,2S,4S)-1-[(dicyclohexylsulfamoyl)-methyl]-7,7-dimethyl-bicyclo[2.2.1]hept-2-yl ester