(4S)-4-(3'',4''-Dimethoxybenzyl)-4-methyl-1-<(S)-1'-phenylethyl>-2-imidazolin-5-on
(4R)-4-(3'',4''-Dimethoxybenzyl)-4-methyl-1-<(S)-1'-phenylethyl>-2-imidazolin-5-on
(4S)-4-Methyl-1-<(S)-1'-phenylethyl>-4-(2''-thienylmethyl)-2-imidazolin-5-on
(4R)-4-Methyl-1-<(S)-1'-phenylethyl>-4-(2''-thienylmethyl)-2-imidazolin-5-on
(4S)-4-Benzyl-4-methyl-1-<(S)-1'-phenylethyl>-2-imidazolin-5-on