反应详情

To a suspension of N-{3-[2-amino-3-cyano-6-(2-hydroxyphenyl)-4-pyridinyl]phenyl}-5-oxotetrahydro-2-furancarboxamide (0.250 g, 0.603 mmol) in methanol (10 mL) was added dropwise 2N NaOH solution (0.3 mL). After the mixture was stirred for 10 minutes, insoluble solid was filtered off. The filtrate was concentrated under reduced pressure and the residue was crystallized from methanol and ethyl ether. The resulting solid was collected by filtration under an argon atmosphere, washed with ethyl ether, and dried under reduced pressure to give Sodium 5-({3-[2-amino-3-cyano-6-(2-hydroxyphenyl)-4-pyridinyl]phenyl}amino)-4-hydroxy-5-oxopentanoate as a pale yellow solid (0.165 g, yield 60%).

1. filtrationinsoluble solid was filtered off
2. concentrationThe filtrate was concentrated under reduced pressure
3. customthe residue was crystallized from methanol and ethyl ether
4. filtrationThe resulting solid was collected by filtration under an argon atmosphere
5. washwashed with ethyl ether
6. customdried under reduced pressure