for the following products
3-Boc-Amino-1-benzylpyrrolidine-3-carboxylic acid | 3-Boc-Amino-1-bn-pyrrolidine-3-carboxylic acid | 3-[[(1,1-Dimethylethoxy)carbonyl]amino]-1-(phenylmethyl)-3-pyrrolidinecarboxylic acid and 1-Benzyl-3-(tert-butoxycarbonylamino)pyrrolidine-3-carboxylic acid
