反应详情

To a solution of {1-[4-(4-oxo-2-phenyl-4,7-dihydro-pyrano[2,3-e]indazol-3-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester (65 mg, 0.13 mmol) in DMF (3 mL) at 0° C. under an atmosphere of N2 was added sodium hydride (60% in mineral oil, 6 mg, 0.15 mmol). After 5 min, methyl iodide (10 μL, 0.16 mmol) was added. After a further 2 hours, the reaction was quenched with H2O, partitioned between EtOAc and H2O and the phases were separated. The organic extracts were washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, gradient 50 to 70% ethyl acetate in cyclohexane) to afford the title compound as a white solid (22 mg, 32%). LCMS (Method B): RT=4.26 min, [M+H]+=522. Also obtained was {1-[4-(7-methyl-4-oxo-2-phenyl-4,7-dihydro-pyrano[2,3-e]indazol-3-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester as an oil (41 mg, 60%). LCMS (Method B): RT=4.42 min, [M+H]+=522.

1. waitAfter a further 2 hours
2. customthe reaction was quenched with H2O
3. custompartitioned between EtOAc and H2O
4. customthe phases were separated
5. washThe organic extracts were washed with brine
6. dry with materialdried (Na2SO4)
7. filtrationfiltered
8. concentrationconcentrated in vacuo