3-(2,4-dimethoxy-5-methoxycarbonylphenyl)octanoic acid   、                                                                                      
2-t-butyl-5-carbamoylaniline                                                                                                                                                                                              以
                                                                                         methylene chloride diethyl ether                                                                                  为溶剂,
                                                                                                                                                                                        以the title compound was obtained as crystals, melting at 101-103° C. (from methylene chloride-diethyl ether)的产率得到N-(2-t-butyl-5-carbamoylphenyl)-3-(2,4-dimethoxy-5-methoxycarbonylphenyl)-octanamide