L-脯氨酸苄酯

[4-(tert-butyldimethylsilanyloxy)-(1S)-1-(5-oxotetrahydrofuran-(2R)-2-yl)butyl]carbamic acid tert-butyl ester

(2S)-2-tert-butoxycarbonylamino-5-(tert-butyldimethyl-silanyloxy)-pentanoic acid

(S)-N-tert-butoxycarbonyl-δ-(N4-benzyloxycarbonyl-1-cytosinyl)norvaline benzyl ester

[(1S)-1-[(4R)-4-benzyl-5-oxotetrahydrofuran-(2R)-2-yl]-3-(2,4,6-trimethoxybenzylcarbamoyl)propyl]carbamic acid tert-butyl ester