反-1,2-环丙烷二羧酸二甲酯

5-oxo-4-(5-phenyl-tetrazol-2-yl)-pyrrolidine-2-carboxylic acid methyl ester

4-(5-benzyl-tetrazol-2-yl)-5-oxo-pyrrolidine-2-carboxylic acid methyl ester

2-azido-4-(5-phenyl-tetrazol-2-yl)-pentanedioic acid dimethyl ester

3-benzyl-3,6-diazabicyclo[3.1.1]heptane