Synthesis of 2,3-disubstituted derivatives of pyrano-, thiopyrano-, and benzoannelated pyrido[2,3-b]thieno[3,2-d]pyrimidines |
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| Authors: | E. G. Paronikian Sh. F. Akopian A. S. Noravian |
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| Affiliation: | (1) A. L. Mndzhoyan Institute of Fine Organic Chemistry, National Academy of Sciences, Republic of Armenia, Erevan, 375091, Armenia |
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| Abstract: | A new methods have been developed for the synthesis of condensed pyrido[2,3-b]thieno[3,2-d]pyrimidines based on cyclic derivatives of 4-cyanopyridine-3-thiones. The presence of two different reactive functional groups NH2 and CONH gives the possibility of carrying out different conversions of thieno[2,3-b]pyridines. __________ Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, 1245–1252, August, 2008. |
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| Keywords: | N-alkyl-4-oxothieno[3,2-d]pyrimidine-2-thiones pyrano(thiopyrano)(4′ ,3′ :4,5]pyrido[2,3-b]-thieno[3,2-d]pyrimidines pyridothieno[3,2-d]pyrimidines pyrimido[5′ ,4′ :2,3]thieno[2,3-c]isoquinolines 4-cyanopyridin-3-thiones |
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