for the following products
(2S,4R)-Boc-4-phenyl-Pro-OH | (2S,4R)-Boc-4-phenyl-pyrrolidine-2-carboxylic acid | (2S,4R)-Boc-4-Phenyl-pyrrolidine-2-carboxylic acid | Boc-L-Pro(4-Ph)-OH (2S,4R) and (2S,4R)-1-tert-Butyloxycarbonyl-4-phenyl-pyrrolidine-2-carboxylic acid
