[CH3:1][O:2]/[CH:3]=[C:4](\[C:14]1[N:15]=[CH:16][N:17]([S:19]([N:22]([CH3:24])[CH3:23])(=[O:21])=[O:20])[CH:18]=1)/[C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([N+:11]([O-])=O)[CH:6]=1.Cl.C(=O)(O)[O-].[Na+]>CO.[Zn]>[NH2:11][C:7]1[CH:6]=[C:5](/[C:4](/[C:14]2[N:15]=[CH:16][N:17]([S:19]([N:22]([CH3:24])[CH3:23])(=[O:20])=[O:21])[CH:18]=2)=[CH:3]/[O:2][CH3:1])[CH:10]=[CH:9][CH:8]=1A solution of Example 46A (0.15 g, 0.43 mmol) in methanol (0.70 mL) was cooled to 0° C., treated with concentrated HCl (0.35 mL), treated with zinc (0.28 g, 4.3 mmol) in portions, stirred at ambient temperature for 20 minutes, neutralized with aqueous sodium bicarbonate solution (15 mL) and extracted with ethyl acetate (4×20 mL). The combined ethyl acetate extracts were dried (Na2SO4) and concentrated to provide the desired product.
Wird geladen…