(5-{5-[3-(2-hydroxy-ethyl)-phenyl]-pyridine-2-sulfonylamino}-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy)-acetic acid tert-butyl ester 、
sodium hydroxide 以to give (5-{5-[3-(2-hydroxy-ethyl)-phenyl]-pyridine-2-sulfonylamino}-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy)-acetic acid (52 mg, 58% yield)的产率得到(5-{5-[3-(2-hydroxy-ethyl)-phenyl]-pyridine-2-sulfonylamino}-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy)-acetic acid