3-[4-[5-[[Benzyl(methyl)amino]methyl]-1-[(2,6-difluorophenyl)methyl]-2,4-dioxo-3-phenylthieno[2,3-d]pyrimidin-6-yl]phenyl]-1-hydroxy-1-methylurea 以93%的产率得到3-[4-[5-[[Benzyl(methyl)amino]methyl]-1-[(2,6-difluorophenyl)methyl]-2,4-dioxo-3-phenylthieno[2,3-d]pyrimidin-6-yl]phenyl]-1-hydroxy-1-methylurea;hydrochloride