反应详情

The compound from step C (1 g, 2.4 mml) and EtI (42 mg, 2.6 mmol) were dissolved in anhydrous DMF (10 mL) Then NaH (144 mg, 3.6 mmol, 60%) was added to the mixture slowly at 0° C. After 30 minutes, the reaction mixture was quenched by saturate NH4Cl (10 mL), extracted with EA, dried over anhydrous Na2SO4, filtered and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column (PE: EA=20:1 to 5:1 to give the title compound (0.608 g, 57%). LC/MS m/z=444.1 [M+H]+. The two enantiomers were separated by SFC chiral separation.

1. customthe reaction mixture was quenched
2. concentrationby saturate NH4Cl (10 mL)
3. extractionextracted with EA
4. dry with materialdried over anhydrous Na2SO4
5. filtrationfiltered
6. concentrationthe filtrate was concentrated under reduced pressure
7. customThe residue was purified by silica gel column (PE