[5-(3-acetyl-5-trifluoromethyl-benzenesulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid tert-butyl ester 、
sodium hydroxide 以to give [5-(3-acetyl-5-trifluoromethyl-benzenesulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid (35 mg, 56% yield)的产率得到[5-(3-acetyl-5-trifluoromethyl-benzenesulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid