title: Syntheses and properties of selected derivatives of pyrimido[5,4-e]-1,3-thiazine and pyrimido[4,5-d]pyrimidine.
abstract: In the reactions of ethyl 4-chloro/tosyloxy/-2-methylpyrimidine-5-carboxylate with differently substituted thioureas, new derivatives of 2,3-dihydro-7-methylpyrimido-[5,4-e]-1,3-thiazine (5-9) and of 7-methyl-1,2,3,4-tetrahydropyrimido[4,5-d]pyrimidine (12, 13) were obtained. Besides, some derivatives of 4-phenylamino-2-methylpyrimidine-5-carboxylic acid (15-20) were also synthesized. Structure of the compounds was confirmed by spectral analysis (IR, H-NMR) and chemical transformations. In the screening pharmacological examinations some of the compounds revealed analgesic, antiinflammatory and immunosuppressive activity.
authors.affiliation: Department of Chemistry of Drugs, School of Medicine, Wrocław.
authors.forename: W
authors.initials: W
authors.lastname: Malinka
authors.forename: T
authors.initials: T
authors.lastname: Zawisza
authors.forename: H E
authors.initials: HE
authors.lastname: Zajac
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D011743:Pyrimidines / Q000138:chemical synthesis*; D013843:Thiazines / Q000138:chemical synthesis*; D013890:Thiourea
chemical_list: D011743:Pyrimidines; D013843:Thiazines; D013890:Thiourea