N-[(1,1-二甲基乙氧基)羰基]-N-(苯基甲基)-甘氨酸

ethyl 1-(benzylglycyl)cyclopropane-1-carboxylate

1-[2-(Benzyl-tert-butoxycarbonyl-amino)-acetyl]-cyclopropanecarboxylic acid ethyl ester

(R)-5-benzyl-7-hydroxy-5-azaspiro[2.4]heptan-4-one