[6-(4-Methoxymethoxy-phenyl)-1-(2-methylsulfanyl-benzyl)-2,4-dioxo-5-(propionylamino-methyl)-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester

ethyl 2,4(1H,3H)-dioxo-6-(4-methoxy-methoxyphenyl)-1-(2-methylthiobenzyl)-5-(benzenesulfon-amidomethyl)thieno[2,3-d]pyrimidine-3-acetate

ethyl 2,4(1H,3H)-dioxo-5-bromomethyl-l-(2-methylthiobenzyl)-6-(4-methoxymethoxyphenyl)thieno[2,3-d]pyrimidine-3-acetate

ethyl 5-aminomethyl-6-(4-methoxymethoxyphenyl)-1-(2-methylthiobenzyl)-2,4-dioxo-1,2,3,4-tetrahydrothieno<2,3-d>pyrimidine-3-acetate

2,4(1H,3H)-dioxo-6-(4-methoxymethoxyphenyl)-1-(2-methylthiobenzyl)-5-(methanesulfonamidomethyl)-thieno[2,3-d]pyrimidine-3-acetic acid