1,4-二氧六环 、
2-{1-[6-fluoro-7-(2-fluoro-4-iodo-phenylamino)-5-oxo-1,2,3,5-tetrahydro-indolizine-8-carbonyl]-3-hydroxy-azetidin-3-yl}-piperidine-1-carboxylic acid tert-butyl ester 在
6-fluoro-7-(2-fluoro-4-iodo-phenylamino)-8-(3-hydroxy-3-piperidin-2-yl-azetidine-1-carbonyl)-2,3-dihydro-1H-indolizin-5-one 作用下,
以
盐酸 、
甲醇 为溶剂,
反应 1.0h,
以to afford 15 mg (16.6% yield) of 6-fluoro-7-(2-fluoro-4-iodo-phenylamino)-8-(3-hydroxy-3-piperidin-2-yl-azetidine-1-carbonyl)-2,3-dihydro-1H-indolizin-5-one (racemic mixture) as the required product的产率得到6-fluoro-7-(2-fluoro-4-iodo-phenylamino)-8-(3-hydroxy-3-piperidin-2-yl-azetidine-1-carbonyl)-2,3-dihydro-1H-indolizin-5-one