(5-amino-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy)-acetic acid tert-butyl ester 、
3,5-双(甲基磺酰基)苯磺酰氯 、
N,N-二异丙基乙胺 以
四氢呋喃 为溶剂,
以to give [5-(3,5-bis-methanesulfonyl-benzenesulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid tert-butyl ester (0.22 g, 54%)的产率得到[5-(3,5-bis-methanesulfonyl-benzenesulfonylamino)-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yloxy]-acetic acid tert-butyl ester