抄録
3-methylthioisothiazolo [3, 4-d] pyrimidine-4, 6-(5H, 7H)-diones (IIa, b) were synthesized by treatment with methyl 6-aminouracil-5-carbodithioates prepared by the reaction of 6-aminouracil with carbon disulfide and dimethylsulfate in the presence of alkali, with iodine in dimethyl sulfoxide in a good yield. The reaction of IIa, b with amines, amides, and active methylene compounds gave the corresponding substituted products of methylthio group in II in a good yield.
