(2R,3S)-3-(tert-Butyl-dimethyl-silanyloxy)-2-methyl-3-phenyl-propionic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester

(R)-2-((R)-1-Hydroxy-2-methyl-propyl)-hexanoic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester

(2R,3R)-3-Hydroxy-2-methyl-5-phenyl-pentanoic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester

Hexanoic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester

(2R,3R)-3-Hydroxy-2-methyl-pentanoic acid (1R,2S)-2-[(2-methyl-benzyl)-(2,4,6-trimethyl-benzyl)-amino]-1-phenyl-propyl ester