7-(3-((R)-6,6-difluoro-5,7,7-trimethyl-3-thioxo-1,4-oxazepan-5-yl)-4-fluorophenylamino)-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile 在
Chiralpak AD column 作用下,
以
正庚烷 、
异丙醇 为溶剂,
以30.3%的产率得到(R)-7-(5-((R)-6,6-difluoro-5,7,7-trimethyl-3-thioxo-1,4-oxazepan-5-yl)-2,4-difluorophenylamino)-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile