In the present era, the use of fused heterocyclic compounds has been showing considerable
value in the development and designing of new drugs. Article flow through the synthetic …

The requirement for scaffolds has prompted synthetic chemists to devise simple and
effective methods for optimal synthesis, which are critical in the medical industry. Under …

A series of new derivatives of dipyrimido [4, 5-b: 5, 4-e][1, 4] thiazine were synthesized by
treatment of 5-amino-6-methyl-2-morpholino-4-pyrimidinethiol (1) with 5-bromo-2, 4-dichloro …

Several derivatives of the novel heterocyclic systems 2-substituted-imidazo-and
benzimidazo-[2, 1-b] pyrimido [4, 5-d][1, 3] thiazine have been synthesised through the one …

Cyclocondensation of 5‐amino‐6‐methyl‐2‐morpholinopyrimidine‐4‐thiol (1) and 2‐bromo‐
5, 5‐dimethylcyclohexane‐1, 3‐dione (2) under mild reaction condition afforded 4, 7, 7 …

Several derivatives of the novel 4-(4-methyl-5 H-pyrimido [4, 5-b][1, 4] thiazin-2-yl)
morpholine and 4-methyl-2-(piperidin-1-yl)-5 H-pyrimido [4, 5-b][1, 4] thiazine ring systems …

As a continuation of our search for new heterocyclic compounds, the synthesis of pyrimido
[5′, 4′: 5, 6][1, 4] thiazino [2, 3‐b] quinoxaline ring system is described. A series of new …

Робота присвячена розробці ефективного та препаративно зручного методу синтезу 2-
алкілтіо-1, 4, 5, 6-тетрагідропіримідинів та частково гідрованих піримідо [2, 1-b] тіазинів …

This review deals with the methods for the synthesis of various bicyclic pyrimidothiazines
which are not annelated with other cycles. Syntheses of pyrimido [2, 1-b]-, pyrimido [4, 5-b] …

Guanidine hydrochloride (1) on treatment with bis (methylthio) methylene malononitrile (2) in
N, N-dimethyl formamide (DMF) and catalytic amount of anhydrous potassium carbonate …