1 (2 phenylsulfonylethyl) 3 benzyl 7 (2,4 dimethoxybenzyl) 3,7 dihydro purine 2,6 dione; 1 (2 phenylsulfonylethyl) 7 (2,4 dimethoxybenzyl) 3 (2 hydroxyethyl) 3,7 dihydropurine 2,6 dione; 1 (2 phenylsulfonylethyl) 7 (2,4 dimethoxybenzyl) 3 [3 (1,3 di hydroisoindol 2 yl) propyl] 3,7 dihydropurine 2,6 dione; 1 (2 phenylsulfonylethyl) 7 (2,4 dimethoxybenzyl) 3 isopropyl 3,7 di hydropurine 2,6 dione; 1 (2 phenylsulfonylethyl) 7 (2,4 dimethoxybenzyl) 3 methyl 3,7 dihydropurine 2,6 dione; 1 (2 phenylsulfonylethyl) 7 (2,4 dimethoxybenzyl) 3,7 dihydropurine 2,6 dione; 1 allyl 7 (2,4 dimethoxybenzyl) 3 methyl 3,7 dihydropurine 2,6 dione; 1 benzyl 7 (2,4 dimethoxy benzyl) 3 methyl 3,7 dihydropurine 2,6 dione; 3 (2 hydroxyethyl) 1 methyl 3,7 dihydropurine 2,6 dione; 3 [3 (1,3 dioxo 1,3 dihydroisoindol 2 yl) propyl] 1 methyl 3,7 dihydropurine 2,6 dione; 3 allyloxymethyl 1 (2 phenylsulfonylethyl) 3,7 dihydropurine 2,6 dione; 3 allyloxymethyl 1 (2 phenylsulfonylethyl) 7 (2,4 dimethoxybenzyl) 3,7 dihydropurine 2,6 dione; 3 allyloxymethyl 1 methyl 3,7 dihydropurine 2,6 dione; 3 allyloxymethyl 7 (2,4 dimethoxybenzyl) 1 methyl 3,7 dihydropurine 2,6 dione; 3 allyloxymethyl 7 (2,4 dimethoxybenzyl) 3,7 dihydropurine 2,6 dione; 3 benzyl 1 methyl 3,7 dihydropurine 2,6 dione; 3 benzyl 7 (2,4 dimethoxybenzyl) 1 methyl 3,7 dihydropurine 2,6 dione; 3 isopropyl 7 methyl 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 1 (2 phenylthioethyl) 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 1,3 dimethyl 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 3 (2 hydroxyethyl) 1 methyl 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 3 (2 hydroxyethyl) 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 3 [3 (1,3 dioxo 1,3 dihydroisoindol 2 yl) propyl] 1 methyl 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 3 [3 (1,3 dioxo 1,3 dihydroisoindol 2 yl) propyl] 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 3 benzyl 3,7 dihydropurine 2,6 dione; 7 (2,4 dimethoxybenzyl) 3 methyl 3,7 dihydropurine 2,6 dione; carbamic acid derivative; methyl 2 phenylthioethyl carbamate; theophylline; unclassified drug; xanthine derivative; article; chemical reaction; chemical structure; oxidation; polymerization; priority journal; synthesis