[Cl:1][C:2]1[C:7]([Cl:8])=[CH:6][CH:5]=[CH:4][C:3]=1[S:9]([NH:12][C:13]1[C:18](Cl)=[N:17][CH:16]=[CH:15][N:14]=1)(=[O:11])=[O:10].[O:20]1[CH2:25][CH2:24][CH2:23][CH2:22][CH:21]1[O:26][CH2:27][C:28]1[CH:33]=[CH:32][C:31]([CH2:34][OH:35])=[CH:30][CH:29]=1.CC(C)([O-])C.[K+].C(O)(=O)CC(CC(O)=O)(C(O)=O)O>O1CCCC1.CN1CCCC1=O>[Cl:1][C:2]1[C:7]([Cl:8])=[CH:6][CH:5]=[CH:4][C:3]=1[S:9]([NH:12][C:13]1[C:18]([O:35][CH2:34][C:31]2[CH:30]=[CH:29][C:28]([CH2:27][O:26][CH:21]3[CH2:22][CH2:23][CH2:24][CH2:25][O:20]3)=[CH:33][CH:32]=2)=[N:17][CH:16]=[CH:15][N:14]=1)(=[O:11])=[O:10]2,3-Dichloro-N-(3-chloro-2-pyrazinyl)benzenesulphonamide (Example 28a) (0.1 g), [4-(tetrahydro-2-pyranyloxymethyl)phenyl]methanol (0.27 g) and potassium tert-butoxide (2 mL of a 1M solution in tetrahydrofuran) in N-methylpyrrolidinone (1 mL) was stirred at 50° C. After 2 h, aqueous citric acid was added and the mixture extracted with ethyl acetate. The organic solution was washed with water and brine and evaporated to dryness. Used directly.
Wird geladen…