5-(S)-amino-4-(S)-hydroxy-2-(R)-methyl-6-phenyl-hexanoic acid butylamide 、 (1R,3S)-3-[2-(propanoylamino)propan-2-yl]cyclohexane-1-carboxylic acid 在
benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以11 mg的产率得到(1R,3S)-3-(1-methyl-1-propionylamino-ethyl)-cyclohexanecarboxylic acid ((1S,2S,4R)-1-benzyl-4-butylcarbamoyl-2-hydroxy-pentyl)-amide