(2S,4S,5S)-5-[N-(t-butoxycarbonyl)-3-(4-thiazolyl)-L-alanyl]amino-N-butyl-6-cyclohexyl-4-hydroxy-2-isopropylhexanamide 、
2(R)-benzyl-3-(N-benzyl-N-methylaminocarbonyl)propionic acid 以to afford 187 mg of the title compound as a white powder, melting at 155°-156° C.的产率得到(2S,4S,5S)-5-{N-[2(R)-benzyl-3-(N-benzyl-L-methylaminocarbonyl)propionyl]-3-(4-thiazolyl)-L-alanyl}amino-N-butyl-6-cyclohexyl-4-hydroxy-2-isopropylhexanamide