反应详情

Methyl 2-(4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}piperidin-1-yl)-6-(methylsulfinyl)isonicotinate (Example 334; 200 mg, 0.422 mmol) was dissolved in anhydrous THF (5 ml) and treated with 2 N lithium hydroxide (10 ml) with stirring for 45 minutes. The mixture was cooled in an ice bath and acidified with 1 N HCl. The aqueous solution was extracted with EtOAc. The organic phase was washed with water, dried over sodium sulfate and concentrated in vacuo to give the acid derivative as a brown solid (LCMS showed a peak of 459). This acid (95 mg, 0.207 mmol) was treated with methoxyamine hydrochloride (17.3 mg, 0.207 mmol) in a manner analogous to Example 8 to afford the title compound. (30 mg).

1. temperatureThe mixture was cooled in an ice bath
2. extractionThe aqueous solution was extracted with EtOAc
3. washThe organic phase was washed with water
4. dry with materialdried over sodium sulfate
5. concentrationconcentrated in vacuo
6. customto give the acid derivative as a brown solid (LCMS