3-methyl-7-(3-methyl-2-buten-1-yl)-8-[3-(tert-butyloxy-carbonylamino)-piperidin-1-yl]-3,7-dihydro-1H-purine-2,6-dione 、
4-bromomethyl-1-methyl-1H-benzo[c][1,2]thiazine-2,2-dioxide 在
potassium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 57.0h,
以59%的产率得到1-[(1-methyl-2,2-dioxo-1H-benzo[c][1,2]thiazin-4-yl)methyl]-3-methyl-7-(3-methyl-2-buten-1-yl)-8-[3-(tert-butyloxycarbonylamino)-piperidin-1-yl]-3,7-dihydro-1H-purine-2,6-dione