(R)-5-(5-bromo-2-fluorophenyl)-6,6-difluoro-5,7,7-trimethyl-[1,4]oxazepan-3-one 、
3-氨基-5-氟吡啶 以The (R)-6,6-difluoro-5-(2-fluoro-5-(5-fluoropyridin-3-ylamino)phenyl)-5,7,7-trimethyl-1,4-oxazepan-3-one (56 mg, 26%) was obtained as an off-white foam的产率得到(R)-6,6-difluoro-5-(2-fluoro-5-(5-fluoropyridin-3-ylamino)phenyl)-5,7,7-trimethyl-1,4-oxazepan-3-one