(3R,5R)-3,5-二甲基-1-苯基甲基-哌嗪酮

N1,N1-dibenzyl-1,2-propanediamine

(R)-2-amino-N,N-dibenzylpropanamide

(R)-N-<2--1-methylethyl>-D-alanine methyl ester

(R)-[2-[Bis(phenylmethyl)amino]-1-methyl-2-oxoethyl]carbamic acid 1,1-dimethylethyl ester