[F:1][C:2]1[CH:10]=[C:9]2[C:5]([CH:6]([C:12](=[O:19])[C:13]3[S:17][CH:16]=[C:15]([CH3:18])[CH:14]=3)[C:7](=[O:11])[NH:8]2)=[N:4][CH:3]=1.[C:20](=[O:26])=[N:21]S(Cl)(=O)=O.C(#N)C.ClS(NC=O)(=O)=O>CS(C)=O.C(O)(=O)C.O>[F:1][C:2]1[CH:10]=[C:9]2[C:5]([CH:6]([C:12](=[O:19])[C:13]3[S:17][CH:16]=[C:15]([CH3:18])[CH:14]=3)[C:7](=[O:11])[N:8]2[C:20]([NH2:21])=[O:26])=[N:4][CH:3]=1The title compound was prepared from 6-fluoro-3-(4-methyl-2-thenoyl)-4-azaoxindole (Example 36) according to the procedure of Example 2C, using 6-fluoro-3-(4-methyl-2-thenoyl)-4-azaoxindole (614 mg, 2.22 mmol), N-chlorosulfonyl isocyanate (0.30 mL, 3.45 mmol) and acetonitrile (10 mL). The crude N-chlorosulfonyl carboxamide was hydrolysed by stirring in DMSO (4 mL) overnight in a flask open to the air. The product was isolated by dilution with water, filtration, and recrystallization from acetic acid. Yield: 249 mg (35%). M.p.>250°.
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