[CH2:1]([O:4][C:5]1[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[CH:7][C:6]=1[C:13]([C:15]1[C:23]2[C:18](=[CH:19][C:20]([O:24][C:25]([F:28])([F:27])[F:26])=[CH:21][CH:22]=2)[NH:17][C:16]=1[CH3:29])=[O:14])[CH:2]=[CH2:3].[H-].[Na+].[S:32](Cl)([C:35]1[CH:41]=[CH:40][C:38]([CH3:39])=[CH:37][CH:36]=1)(=[O:34])=[O:33]>CN(C=O)C>[CH2:1]([O:4][C:5]1[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[CH:7][C:6]=1[C:13]([C:15]1[C:23]2[C:18](=[CH:19][C:20]([O:24][C:25]([F:28])([F:26])[F:27])=[CH:21][CH:22]=2)[N:17]([S:32]([C:35]2[CH:41]=[CH:40][C:38]([CH3:39])=[CH:37][CH:36]=2)(=[O:34])=[O:33])[C:16]=1[CH3:29])=[O:14])[CH:2]=[CH2:3]To a solution of 6 (8.0 g, 20 mmol) in DMF (200 mL) was added NaH (1.5 eq). Mixture stirred for 15 min before addition of TsCl (1.5 eq, 5.6 g). After 1 hour, the reaction mixture was poured into ice water and extracted with CH2Cl2. The organic layer was washed with NH4Cl (2×), NaHCO3 and brine, then dried with Na2SO4 and concentrated. Purification via flash chromatography eluding with 20% EtOAc/hexanes afforded the product as a viscous yellow oil.
Wird geladen…