(3S,5S,6R)-3-Cyclohexylmethyl-2-oxo-5,6-diphenyl-morpholine-4-carboxylic acid benzyl ester

(4S-cis)-5-(cyclohexylmethyl)-4-hydroxy-2-pyrrolidinone

benzyl (2S,3S,5S,6R)-3-(cyclohexylmethyl)-2-(2-methoxy-2-oxoethyl)-5,6-diphenylmorpholine-4-carboxylate

[4S(RS),5S]-5-(cyclohexylmethyl)-4-[(tetrahydro-2H-pyran-2-yl)oxy]-2-oxo-1-pyrrolidinecarboxylic acid, 1,1-dimethylethyl ester