8-amino-7-(2-fluoro-4-iodo-phenylamino)-6-methyl-2,3-dihydro-oxazolo[3,2-a]pyridin-5-one 、
(3-甲基氧杂环丁烷-3-基)甲烷磺酰氯 在
crude product 作用下,
以
吡啶 为溶剂,
以afforded 25 mg of the product (9% yield)的产率得到N-(7-(2-fluoro-4-iodophenylamino)-6-methyl-5-oxo-3,5-dihydro-2H-oxazolo[3,2-a]pyridin-8-yl)-1-(3-methyloxetan-3-yl)methanesulfonamide