3-cyclopentyl-2-(3,4-dichlorophenyl)propionamide   、                                                                                      
异氰酸乙酯                                                                                                                                                              在
                                                                                                                                                                                 Silica gel   、                                                                                                  hexanes ethyl                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以Flash chromatography (Merck Silica gel 60, 230400 mesh, 90/10 hexanes/ethyl afforded 1-[3-cyclopentyl-2-(3,4-dichloro-phenyl)-propionyl]-3-ethyl-urea (29 mg, 26%) as a white foam的产率得到1-[3-cyclopentyl-2-(3,4-dichlorophenyl)propionyl]-3-ethyl-urea