反应详情

3-(Chlorophenyl)-7-(trans-4-tert-butyldimethylsilyloxycyclohexylamino)-3,4-dihydropyrimido[4,5-d]pyrimidin-2(1H)-one (972 mg, 2 mmol) (prepared as described in Example 81) was suspended in 1-methyl-2-pyrrolidinone (15 mL), and sodium hydride (88 mg, 2.2 mmol (60% oil dispersion)) was added. The reaction mixture was stirred at room temperature for 30 minutes, methyl bromoacetate (0.190 mL, 2 mmol) was added. The mixture was stirred for 6 hours. The reaction mixture was added to water and extracted with ethyl acetate, washed with water, dried over magnesium sulfate, and evaporated under reduced pressure. :The residue was purified by column chromatography on silica gel using 70:30 hexane/acetone as eluant. The fractions containing the product were combined and evaporated under reduced pressure to give 425 mg of 3-(2-chlorophenyl)-7-(trans-4-tert-butyldimethylsilyloxycyclohexylamino)-1-methoxycarbonylmethyl-3,4-dihydropyrimido-[4,5-d]pyrimidin-2(1H)-one as a white solid ((M+H)+560, m.p.165.7-167.4° C.

1. stirringThe mixture was stirred for 6 hours
2. extractionextracted with ethyl acetate
3. washwashed with water
4. dry with materialdried over magnesium sulfate
5. customevaporated under reduced pressure
6. custom:The residue was purified by column chromatography on silica gel using 70:30 hexane/acetone as eluant
7. additionThe fractions containing the product
8. customevaporated under reduced pressure