N-[(4R)-7-chloro-2-(difluoromethyl)-2-methyl-3,4-dihydro-2H-chromen-4-yl]-N'-(3-methylisoquinolin-5-yl)urea 在
Chiralpak AD-H chiral column 作用下,
以
甲醇 、
二氧化碳 为溶剂,
以24%的产率得到N-[(2S,4R)-7-chloro-2-(difluoromethyl)-2-methyl-3,4-dihydro-2H-chromen-4-yl]-N'-(3-methylisoquinolin-5-yl)urea