5-bromo-2-heptyloxy-benzoic acid   、                                                                                      (2S)-amino-3-(2'-hydroxy-biphenyl-4-yl)-propionic acid methyl ester   、                                                                                      
2-(1h-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate   、                                                                                      
N,N-二异丙基乙胺                                                                                                                                                                                                                                                                                                          以to yield the (2S)-(5-Bromo-2-heptyloxy-benzoylamino)-3-(2′-hydroxy-biphenyl-4-yl)-propionic acid methyl ester (0.200 g)的产率得到(2S)-(5-bromo-2-heptyloxy-benzoylamino)-3-[2'-hydroxy-biphenyl-4-yl]-propionic acid methyl ester