反应详情

To [4-(4-{[1-(4-fluorophenylcarbamoyl)cyclopropanecarbonyl]amino}phenoxy)pyridin-2-yl]-N-(phenoxycarbonyl)carbamic acid phenyl ester (50 mg) was added a solution of 1-[2-(dimethylamino)ethyl]piperazine (48.6 mg) in N,N-dimethylformamide (1.0 ml) at room temperature, followed by stirring for 5 hr. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with a saturated aqueous solution of ammonium chloride and brine in this order, and dried over anhydrous sodium sulfate. The solvent was concentrated under reduced pressure. The resultant residue was purified by silica gel column chromatography (Fuji Silysia NH, eluent; ethyl acetate, then ethyl acetate:methanol=95:5). Fractions containing the target compound were concentrated under reduced pressure. A solid was precipitated by addition of diethyl ether:heptane=1:3 to the resultant residue. The solvent was removed under reduced pressure. The solid residue was dried under reduced pressure to provide the titled compound as white powder (34.7 mg, 76%).

1. customThe reaction mixture was partitioned between ethyl acetate and water
2. washThe organic layer was washed with a saturated aqueous solution of ammonium chloride and brine in this order
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationThe solvent was concentrated under reduced pressure
5. customThe resultant residue was purified by silica gel column chromatography (Fuji Silysia NH, eluent
6. additionFractions containing the target compound
7. concentrationwere concentrated under reduced pressure
8. customA solid was precipitated by addition of diethyl ether
9. customThe solvent was removed under reduced pressure
10. customThe solid residue was dried under reduced pressure