[5-(3'-methanesulfonyl-biphenyl-4-sulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid tert-butyl ester   、                                                                                      
sodium hydroxide                                                                                                                                                                                                                                                                                                          以to give [5-(3′-methanesulfonyl-biphenyl-4-sulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid (75 mg, 83% yield) as an off-white solid的产率得到[5-(3'-methanesulfonyl-biphenyl-4-sulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid