反应详情

To a stirred solution of (2S)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-(((tert-butyldimethylsilyl)oxy)methyl)-4-(((4-methoxybenzyl)oxy)methyl)-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 170, 18.70 g, 25.48 mmol) in DCM/water (180 mL/20 mL), was added DDQ (6.94 g, 30.57 mmol) at 0° C. The mixture was stirred at room temperature for 1 hour before it was concentrated. The residue was purified on silica gel column eluting with 0-100% ethyl acetate/hexanes to give a pale yellow oil, 12.38 g, 79%.

1. concentrationwas concentrated
2. customThe residue was purified on silica gel column
3. washeluting with 0-100% ethyl acetate/hexanes
4. customto give a pale yellow oil, 12.38 g, 79%