Methanesulfonic Acid → 3-methoxy-2,2-dimethylpropionic acid 5-[(R)-[3-(2-acetoxyethoxy)-2-fluoro-5-methoxyphenyl]-(4-{amino[2-methylallyloxycarbonylimino]methyl}phenylamino)methyl]-2-pyrimidin-2-yl-2H-[1,2,4]-triazol-3-yloxymethyl ester methanesulfonate

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Reaction Steps

At room temperature, 3-methoxy-2,2-dimethylpropionic acid 5-[(R)-[3-(2-acetoxyethoxy)-2-fluoro-5-methoxyphenyl]-(4-{amino[2-methylallyloxycarbonylimino]methyl}phenylamino)methyl]-2-pyrimidin-2-yl-2H-[1,2,4]triazol-3-yloxymethyl ester (Example 6f, 50 mg) was dissolved in ethyl acetate (5 mL), and a solution of methanesulfonic acid (0.0041 mL) in ethyl acetate (0.5 mL) was added dropwise thereto. The resulting mixture was stirred overnight at room temperature, and the precipitated solid was filtered. The filtrate obtained was washed with ethyl acetate and TBME, and dried. The captioned compound (48 mg) was obtained.

Provenance & Evidence