5-(N-benzyl-N-methylaminomethyl)-1-(2,6-difluorobenzyl)-6-[4-(3-methylureido)phenyl]-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione 以91%的产率得到1-[4-[5-[[Benzyl(methyl)amino]methyl]-1-[(2,6-difluorophenyl)methyl]-2,4-dioxo-3-phenylthieno[2,3-d]pyrimidin-6-yl]phenyl]-3-methylurea;hydrochloride