(2R,4S,5S)-5-[N-(t-butoxycarbonyl)-3-(4-thiazolyl)-L-alanyl]amino-6-cyclohexyl-N-ethyl-4-hydroxy-2-methylhexanamide 、
2(R)-benzyl-3-(N-benzyl-N-methylaminocarbonyl)propionic acid 以to afford 129 mg of the title compound as white crystals, melting at 148°-150° C.的产率得到(2R,4S,5S)-5-{N-[2(R)-benzyl-3-(N-benzyl-N-methylaminocarbonyl)propionyl]-3-(4-thiazolyl)-L-alanyl}amino-6-cyclohexyl-N-ethyl-4-hydroxy-2-methylhexanamide