Synthesis of the nucleosides of 6-methyluracil (I), 6-methyl-2-thiouracil (11), 2-thiouracil (111) and barbituric acid (IV) was attempted by means of the Hilbert and Johnson pyrimidine nucleoside synthesis. No nucleosides were obtained. Both a-and 0-isomers of the oxygen glucosides were isolated for I and 11, and as one of the by-products, 4-ethoxy-6-methyl-2 (1)- pyrimidone, all previously unreported. No condensation products were obtained for I11 or ...
