Hydrochloric Acid → 2-(4-{[(3,4-Dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}piperidin-1-yl)-N-methoxy-6-(methylsulfinyl)isonicotinamide

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Reaction Steps

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).

Provenance & Evidence