2-[Chloro(cyclohexyl)methyl]-3-methyl-1-benzofuran   、                                                                                      
ethyl 3-(4-aminobenzamido)propanoate                                                                                                                                                                                                                                                                                                          以the title object compound (268 mg, 37%) was obtained as a white solid的产率得到3-{[(4-{[cyclohexyl(3-methyl-1-benzofuran-2-yl)methyl]amino}phenyl)carbonyl]amino}propanoic acid