tert-butyldiphenylsilyl 2-{6-bromo-5-methyl-2,4-dioxo-1H,2H,3H,4H-thieno[2,3-d]pyrimidin-3-yl}-2-methylpropanoate 1g

tert-butyldiphenylsilyl 2-{6-bromo-5-methyl-2,4-dioxo-1H,2H,3H,4H-thieno[2,3-d]pyrimidin-3-yl}-2-methylpropanoate 1g