(1'R,2'S)-2-<2'--1'-<(tert-butyldimethylsilyl)oxy>-3'-phenylpropyl>-1,3-thiazole

(S)-2(tert -butoxycarbonyl)amino-3-phenyl-(R)-1-(2-thiazolyl)propan-1-ol

(2R,3S)-3--2-<(tert-butyldimethylsilyl)oxy>-4-phenylbutanal

5(S)-(Boc-amino)-4(S)-hydroxy-6-phenyl-hexanoic acid ethyl ester

(S)-2-Dibenzylamino-5-[1,3]dioxan-2-yl-1-phenyl-pentan-3-one