2(R)-[1(S)-(tert-butoxycarbonyl)-4-phenylbutyl]-2'-glycinyl-4-methylvalerohydrazide 、
O-苄基羟胺 、
O-(四氢-2H-吡喃-2-基)羟基胺 以was obtained 2(R)-[1(S)-(benzyloxycarbamoyl)-4-phenylbutyl]-4-methyl-N-(2,5-dioxo-1-imidazolidinyl)valeramide in the form of a white solid的产率得到2(R)-[1(S)-(benzyloxycarbamoyl)-4-phenylbutyl]-4-methyl-N-(2,5-dioxo-1-imidazolidinyl)valeramide