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RISRegioselective synthesis of new 5H,10H-dipyrimido[2,1-b:4′,5′-d][1,3]thiazine: a combined experimental and computational study
سال: 2019
خلاصه:
Several derivatives of the novel tricyclic system ‘dipyrimido[2,1-
b:4,5-d][1,3]thiazine’ were synthesized via inter- and intramolecular heterocyclization of 2,4-dichloro-5--chloromethyl--6-methylpyrimidine and ...
A Straightforward Approach for the Synthesis of Novel Derivatives of Benzo [b] pyrazolo [5,1: 2,3] pyrimido [4, 5-e] [1,4] thiazine
سال: 2016
خلاصه:
Several derivatives of the novel benzo[b]pyrazolo[5′,1′:2,3]pyrimido[4,5-e][1,4]thiazine ring system have been synthesized through the one-pot cyclocondensation of 6-bromo-7-chloro-2-(ethylthio)5-methylpyrazolo[1,5-a]pyr ...