4-[(4R)-6-[3-[3-[(4R)-4-(4-cyanophenyl)-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-4,7-dihydro-3H-pyrrolo[3,4-d]pyrimidin-6-yl]propylamino]propyl]-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-4,7-dihydro-3H-pyrrolo[3,4-d]pyrimidin-4-yl]benzonitrile 、
乙基磺酸 以
甲醇 为溶剂,
以80%的产率得到4-[(4R)-6-[3-[3-[(4R)-4-(4-cyanophenyl)-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-4,7-dihydro-3H-pyrrolo[3,4-d]pyrimidin-6-yl]propylamino]propyl]-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-4,7-dihydro-3H-pyrrolo[3,4-d]pyrimidin-4-yl]benzonitrile;ethanesulfonic acid