Synthesis of 5-Alkyl-1,3-bis[2-hydroxy-3-(6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-3-yl)propyl]-6-methyl-1,2,3,4-tetrahydropyrimidine-2,4-diones-Uracil derivatives exhibit immunotropic, antiphlogistic, membrane-stabilizing, and antiradical activity. -(KRIVONOGOV, V. P.; KOZLOVA, G. G.; BELAYA, E. A.; SIVKOVA, G. A.; SPIRIKHIN, L. V.; ABDRAKHMANOV, I. B.; PLECHEV, V. V.; Russ.