反应详情

mCPBA (0.420 g, 1.87 mmol) was slowly added to a solution of tert-butyl [(3R,4R,5S)-4-hydroxy-5-methyl-1-(3-nitro-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl)piperidin-3-yl]carbamate (0.200 g, 0.510 mmol) in DCM (3.0 mL) at room temperature. The reaction mixture was stirred at room temperature for 1 h. The mixture was then washed with aq. Na2S2O3, followed by 1 M NaOH. The organic layer was separated, dried and concentrated under reduced pressure. The resulting residue was further purified by silica gel column chromatography (eluting with 0-30% MeOH in EtOAc) to give the sub-title compound (90 mg, 43%) as a light orange powder. LCMS calc. for C19H29N4O6 (M+H)+: m/z=409.2. Found: 409.2.

1. washThe mixture was then washed with aq. Na2S2O3
2. customThe organic layer was separated
3. customdried
4. concentrationconcentrated under reduced pressure
5. customThe resulting residue was further purified by silica gel column chromatography (eluting with 0-30% MeOH in EtOAc)