(2S,4R)-4-(2-Cyanobenzyl)pyrrolidine-2-carboxylic acid
(2S,4R)-1-(tert-Butoxycarbonyl)-4-(2-iodobenzyl)pyrrolidine-2-carboxylic acid
(2S,4R)-1-(tert-Butoxycarbonyl)-4-(3-iodobenzyl)pyrrolidine-2-carboxylic acid
(2S,4R)-4-(4-Fluorobenzyl)pyrrolidine-2-carboxylic acid
(2S,4R)-1-(tert-Butoxycarbonyl)-4-(4-methylbenzyl)pyrrolidine-2-carboxylic acid
(2R,4R)-4-(4-Bromobenzyl)pyrrolidine-2-carboxylic acid
