反应详情

温度

30 °C

To the solution of 1,1-dimethylethyl methyl[2-({4-[(phenylmethyl)oxy]-3-[(3-pyridinylamino)carbonyl]phenyl}oxy)ethyl]carbamate (may be prepared as described in Description 75; 140 mg, 0.17 mmol) in dichloromethane (10 ml) was added trifluoroacetic acid (3.0 ml, 38.9 mmol) dropwise. After stirring at 30° C. for 2 h, the pH of the solution was adjusted to 7-8 by adding aqueous NaHCO3 solution. The mixture was extracted with dichloromethane. The dichloromethane layer was washed with brine, dried over Na2SO4, and concentrated to obtain a crude product. The crude product was purified by prep-HPLC (Gilson GX-281, waters X-Bridge 5 μm, 100*30 mm; A: 0.04% NH3.H2O/water, B: CH3CN; 0-6.0 min, 30%-55%; 6-12 min, 95%, RT=7.3 min) to yield the title compound as a white solid. 20 mg.

1. extractionThe mixture was extracted with dichloromethane
2. washThe dichloromethane layer was washed with brine
3. dry with materialdried over Na2SO4
4. concentrationconcentrated
5. customto obtain a crude product
6. customThe crude product was purified by prep-HPLC (Gilson GX-281, waters X-Bridge 5 μm, 100*30 mm
7. custom0-6.0 min, 30%-55%