(3-(5-(2,4-bis(benzyloxy)-5-isopropylphenyl)-3-(ethylcarbamoyl)isoxazol-4-yl)-1,2,4-oxadiazol-5-yl)methyl methanesulfonate   、                                                                                      
四氢吡咯                                                                                                                                                                                                                                                                                                          以to afford the intermediate compound 5-(2,4-bis(benzyloxy)-5-isopropylphenyl)-N-ethyl-4-(5-(pyrrolidin-1-ylmethyl)-1,2,4-oxadiazol-3-yl)isoxazole-3-carboxamide (65 mg, 0.10 mmol) in a yield of 93%的产率得到5-(2,4-bis(benzyloxy)-5-isopropylphenyl)-N-ethyl-4-(5-(pyrrolidin-1-ylmethyl)-1,2,4-oxadiazol-3-yl)isoxazole-3-carboxamide