E. Paronikyan, S. Dashyan, A. S. Noravyan
Dec 1, 2014
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0
Influential Citations
2
Citations
Journal
Russian Journal of Organic Chemistry
Abstract
Reactions of 3-cyanopyridine-2(1H)-thiones with ethyl chloroacetate and chloroacetamide gave the corresponding amino-substituted thieno[2,3-b]pyridines which were treated with formamide or ethyl formate to obtain fused pyridothieno[3,2-d]pyrimidinones. The latter were converted into hydrazino derivatives whose cyclocondensation with triethyl orthoformate or formic acid afforded 7,10-dihydro-8H-pyranopyridothienopyrimidines and 2,3-dihydro-1H-cyclopentapyridothienopyrimidines annulated by triazole ring at the pyrimidine ring.