[F:1][C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][CH:3]=1.CC(C)([O-])C.[K+].[CH3:15][CH:16]1[N:21](C(OCC2C=CC=CC=2)=O)[CH:20]([CH:32]2[CH2:34][O:33]2)[CH2:19][CH2:18][CH2:17]1>C(O)(C)(C)C.O>[CH3:15][CH:16]1[CH2:17][CH2:18][CH2:19][CH:20]([CH:32]([OH:33])[CH2:34][O:8][C:5]2[CH:6]=[CH:7][C:2]([F:1])=[CH:3][CH:4]=2)[NH:21]1A solution of a p-fluorophenol in t-butanol is treated with one equivalent of potassium t-butoxide, followed by the compound of Example 35A. The reaction mixture is then refluxed until all epoxide has reacted. The reaction is cooled, diluted with water, and extracted with ethyl acetate. The organic extracts are dried and concentrated. The carbobenzyloxy protecting group is removed by standard hydrogenolysis and the final product purified by chromatography.
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