(R)-5-(5-bromo-2-fluorophenyl)-6,6-difluoro-5,7,7-trimethyl-[1,4]oxazepan-3-one 、
2-氯-5-氨基吡啶 以The (R)-5-(5-(6-chloropyridin-3-ylamino)-2-fluorophenyl)-6,6-difluoro-5,7,7-trimethyl-1,4-oxazepan-3-one (74 mg, 32.7%) was obtained as a light brown foam的产率得到(R)-5-(5-(6-chloropyridin-3-ylamino)-2-fluorophenyl)-6,6-difluoro-5,7,7-trimethyl-1,4-oxazepan-3-one