S. Tumkyavichyus, R. I. Matulyauskene
Aug 1, 1987
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Journal
Chemistry of Heterocyclic Compounds
Abstract
A study has been made of the reaction of the ethyl esters of 5-amino-, 5-ethoxy-methyleneamino-, and 5-acetylamino-2-methylthiothieno[2,3-d]pyrimidine-6-carboxylic acids with hydrazine. Certain derivatives of 3-aminothieno[2,3-d∶4,5-d']-dipyrimidin-4(3H)-ones have been synthesized.