[H-].[Na+].[CH3:3][C:4]([SH:7])([CH3:6])[CH3:5].C([O:10][C:11](=[O:35])[CH2:12][C:13]1[CH:14]=[N:15][CH:16]=[C:17]([C:19]2[CH:24]=[CH:23][C:22](F)=[CH:21][C:20]=2[CH2:26][N:27]([C:30]([CH:32]2[CH2:34][CH2:33]2)=[O:31])[CH2:28][CH3:29])[CH:18]=1)C>CN(C=O)C.O.N#N>[C:4]([S:7][C:22]1[CH:23]=[CH:24][C:19]([C:17]2[CH:18]=[C:13]([CH2:12][C:11]([OH:35])=[O:10])[CH:14]=[N:15][CH:16]=2)=[C:20]([CH2:26][N:27]([C:30]([CH:32]2[CH2:34][CH2:33]2)=[O:31])[CH2:28][CH3:29])[CH:21]=1)([CH3:6])([CH3:5])[CH3:3]Sodium hydride (60% in mineral oil; 0.042 g, 1.04 mmol) was suspended in DMF (5 mL). After stirring for 10 minutes, 2-methyl-2-propanethiol (0.13 mL, 1.15 mmol) was added, and the mixture was stirred for 30 minutes. (5-{2-[(N-Cyclopropanecarbonyl-N-ethyl-amino)-methyl]-4-fluoro-phenyl}-pyridin-3-yl)-acetic acid ethyl ester (0.20 g, 0.52 mmol) was added, and the reaction was stirred at 90° C. overnight. The mixture was diluted with H2O, and N2 was bubbled through the solution into a bleach trap until all odor was removed. The aqueous layer was washed with EtOAc, and then acidified to pH 4 and extracted with EtOAc. The combined organic layers were concentrated, and the residue was purified by preparative HPLC to give Compound 22.
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