methyl (2S,4S)-1-(2,2-diphenylacetyl)-4-(3-(4-fluorophenyl)propoxy)pyrrolidine-2-carboxylate

(2S,4S)-1-(2,2-diphenylacetyl)-4-(3-(4-fluorophenyl)-propoxy)pyrrolidine-2-carboxylic acid

methyl (2S,4S)-4-((4aS,7aS)-6-benzyloctahydro-1H-pyrrolo[3,4-b]pyridin-1-yl)-1-(2,2-diphenylacetyl)pyrrolidine-2-carboxylate

(2S,4S)-4-((4aS,7aS)-6-benzoctahydro-1H-pyrrolo[3,4-b]pyridin-1-yl)-1-(2,2-diphenylacetyl)pyrrolidine-2-carboxylic acid

(2S,4S)-4-(benzyloxy)-1-(2,2-diphenylacetyl)pyrrolidine-2-carboxylic acid