反应详情

A mixture of (S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-hydroxyethyl)pyridine 1-oxide (0.615 g, 1.463 mmol), 2-(1H-indol-1-yl)acetic acid (0.282 g, 1.610 mmol), EDC (0.842 g, 4.39 mmol), and DMAP (0.268 g, 2.195 mmol) in DCM (20 ml) was stirred at room temperature overnight. The reaction was washed with 1N HCl, aqueous NaHCO3 and brine; the organic phase was dried over Na2SO4 and evaporated to dryness. The crude was purified by flash chromatography on silica gel column (DCM/MeOH from 99/1 to 98/2) to afford (S)-4-(2-(2-(1H-indol-1-yl)acetoxy)-2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)ethyl)-3,5-dichloropyridine 1-oxide (0.615 g, 1.065 mmol, 72.8% yield). MS/ESI+ 577.2 [MH]+; [αD]=+5.500, c=0.44, DCM; 1H NMR (300 MHz, DMSO-d6) d ppm 8.52 (s, 2H), 7.48-7.63 (m, 1H), 7.27 (d, 1H), 7.13-7.19 (m, 2H), 7.10 (td, 1H), 7.00-7.05 (m, 1H), 6.99 (d, 1H), 6.92 (dd, 1H), 7.06 (t, 1H), 6.45 (dd, 1H), 6.02 (dd, 1H), 5.23 (d, 1H), 5.05 (d, 1H), 3.84 (d, 2H), 3.42 (dd, 1H), 3.20 (dd, 1H), 1.13-1.34 (m, 1H), 0.49-0.67 (m, 2H), 0.29-0.46 (m, 2H).

1. washThe reaction was washed with 1N HCl, aqueous NaHCO3 and brine
2. dry with materialthe organic phase was dried over Na2SO4
3. customevaporated to dryness
4. customThe crude was purified by flash chromatography on silica gel column (DCM/MeOH from 99/1 to 98/2)