(rac)-Ethyl 6-(bromomethyl)-4-[4-cyano-2-(methylsulfonyl)phenyl]-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carboxylate 在
Daicel Chiralpak IC, 5 μm, 250 mm x 20 mm 作用下,
以
甲醇 、
甲基叔丁基醚 、
乙腈 为溶剂,
生成
4-{(4S)-6-ethyl-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-2,3,4,5,6,7-hexahydro-1H-pyrrolo[3,4-d]pyrimidin-4-yl}-3-(methylsulfonyl)benzonitrile 、 4-{(4R)-6-ethyl-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-2,3,4,5,6,7-hexahydro-1H-pyrrolo[3,4-d]pyrimidin-4-yl}-3-(methylsulfonyl)benzonitrile