[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[OH:8].[H-].[Na+].[C:11]([O:15][C:16]([N:18]1[CH2:31][CH2:30][C:21]2([CH2:24][CH:23](OS(C)(=O)=O)[CH2:22]2)[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12].O>CN(C)C=O>[C:11]([O:15][C:16]([N:18]1[CH2:31][CH2:30][C:21]2([CH2:22][CH:23]([O:8][C:3]3[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=3[F:1])[CH2:24]2)[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:12])[CH3:13]After dissolving 148 mg of 2-fluorophenol in 10 mg of dimethylformamide, 53 mg of sodium hydride (70% suspension in oil) was added, the mixture was stirred at 80° C. for 30 minutes, a solution of 148 mg of 7-(tert-butoxycarbonyl)-2-methanesulfonyloxy-7-azaspiro[3.5]nonane in N,N-dimethylformamide (7 ml) was added and the mixture was stirred at 80° C. for two nights. After cooling it to room temperature, water was added and extraction was performed with ethyl acetate. The organic layer was washed with a 1N sodium hydroxide solution and then dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to obtain the title compound (163 mg, 100% yield).
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