2-[3-endo-(3-carbamoyl-2-hydroxy-phenyl)-8-aza-bicyclo[3.2.1]oct-8-yl]-ethyl-(4,4-difluoro-cyclohexylmethyl)-carbamic acid benzyl ester trifluoroacetate 在
碳酸氢钠 作用下,
以
二氯甲烷 、
水 为溶剂,
生成
2-[3-endo-(3-carbamoyl-2-hydroxy-phenyl)-8-aza-bicyclo[3.2.1]oct-8-yl]-ethyl-(4,4-difluoro-cyclohexylmethyl)-carbamic acid benzyl ester