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Fused pyrimidine systems: XIII. Synthesis and some transformations of 1,3-thiazolo(thiazino)-fused pyrido[3,4-d]pyrimidines

✍ Scribed by I. V. Dyachenko; R. I. Vas’kevich; M. V. Vovk


Book ID
124071949
Publisher
SP MAIK Nauka/Interperiodica
Year
2014
Tongue
English
Weight
309 KB
Volume
50
Category
Article
ISSN
1070-4280

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## Abstract Convenient syntheses of 3‐substituted ethyl 4‐oxo‐2‐thioxo‐1,2,3,4,5,6,7,8‐octahydropyrid[4′,3′:4,5]thieno[2,3‐d]pyrimidine‐7‐carboxylates **__3a, b, 6, 11–13__**, ethyl 3‐methyl‐5‐oxo‐2,3,6,9‐tetrahydro‐5 H‐pyrido[4′,3′:4,5]thieno[2,3‐d][1,3]thiazolo[3,2‐a]pyrimidine‐8‐7H‐carboxylate (