Synthesis of new condensed derivatives of pyrano[4,3-b]thieno[3,2-e]pyridine and pyrido[3',2':4,5]thieno[3,2-d]pyrimidine |
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| Authors: | V. V. Dabaeva M. R. Bagdasaryan A. S. Noravyan |
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| Affiliation: | (1) A. L. Mnjoyan Institute of Fine Organic Chemistry, Scientific-Technological Center of Organic and Pharmaceutical Chemistry of the National Academy of Sciences of the Republic of Armenia, 26 Azatutyan Ave., Yerevan, 0014, Armenia; |
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| Abstract: | The reactions of 2-methyl (propyl) substituted 8,8-dimethyl-7,10-dihydro-4H,8H-pyrano[3",4":5',6']pyrido[3',2':4,5]thieno[3,2-d][1,3]oxazines with primary amines give 2-methyl (propyl) substituted 8,8-di- methyl-7,10-dihydro-8H-pyrano[3",4":5',6']pyrido[3',2':4,5]thieno[3,2-d][1,3]pyrimidin-4(3H)-ones or 3-acetyl-N-alkyl- and N-alkyl-3-butyrylamino-7,7-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]thieno[3,2-e]- pyridine-2-carboxamides depending on steric hindrance in the amines. |
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