Derivatives of the novel heterocyclic parent systems imidazolo[1,2-a]thiopyrano[4',3':4,5]thieno[2,3-d]pyrimidine (B) and thiopyrano[4',3':4,5]thieno[3,2-e][1,2,4]triazolo[1,5-c]pyrimidine (C) have been synthesized by fusing pyrimidine moieties to 2-amino-4,7-dihydro-5H-thieno[2,3-c]thiopyran-3-carboxylic acid ethyl ester (1) and -3-carbonitrile (10), followed by cyclization reactions of the title intermediates A thus obtained.
通过将嘧啶基团与2-氨基-4,7-二氢-5H-噻吩[2,3-c]噻吩并[4',3':4,5]噻吩[2,3-d]嘧啶酮(B)和噻吩并[4',3':4,5]噻吩[3,2-e][1,2,4]三唑[1,5-c]嘧啶(C)的新杂环母体进行融合,合成了它们的衍生物。该合成过程是将乙酸乙酯(1)和-3-碳氰基(10)的2-氨基-4,7-二氢-5H-噻吩[2,3-c]噻吩并[4',3':4,5]噻吩酸中间体(A)进行环化反应。