title: New amides of 5-(4-chlorobenzoyl)aminoorotic acid: their synthesis and biological activity.
abstract: The synthesis and in-vitro biological evaluation of the amide series 4 of 5-(4-chlorobenzoyl)aminoorotic acid 2 are presented. The biological properties of a few 5-(4-chlorobenzoyl)amino-2,6-dihydroxy-N-substituted-4-pyrimidinecarboxamide derivatives 4 tested here were compared with those of the isosteric isothiazole derivative MR-2/94 (5-(4-chlorobenzoyl)amino-N-(4-chlorophenyl)-3-methyl-4-isothiazolecarboxamide), which possesses a strong immunosuppressive and anti-inflammatory activity [1, 2], It must be suggested that replacement of the isothiazole by a pyrimidine core ring system resulted in considerable lowering of the anti-inflammatory and immunotropic actions of the obtained amides. Physicochemical properties of 2-(4-chlorophenyl)-6,8-dihydroxy-4H-pyrimido[5,4-d]-1,3-oxazin-4-on 3 are also briefly described.
authors.affiliation: Department of Chemistry, Wroclaw University of Technology, Wroclaw, Poland. rykolf@mp.pl
authors.forename: Andrzej
authors.initials: A
authors.lastname: Regiec
authors.forename: Magdalena
authors.initials: M
authors.lastname: Spiewak
authors.forename: Ryszard
authors.initials: R
authors.lastname: Jasztold-Howorko
authors.forename: Ryszard
authors.initials: R
authors.lastname: Miedzybrodzki
mesh_terms: D000577:Amides / Q000138:chemical synthesis* / Q000494:pharmacology; D000893:Anti-Inflammatory Agents / Q000138:chemical synthesis / Q000494:pharmacology; D016207:Cytokines / Q000037:antagonists & inhibitors; D006801:Humans; D007166:Immunosuppressive Agents / Q000138:chemical synthesis / Q000494:pharmacology; D020128:Inhibitory Concentration 50; D008213:Lymphocyte Activation / Q000187:drug effects; D008214:Lymphocytes / Q000187:drug effects / Q000276:immunology; D015394:Molecular Structure; D009569:Nitric Oxide / Q000037:antagonists & inhibitors / Q000096:biosynthesis; D009963:Orotic Acid / Q000138:chemical synthesis* / Q000494:pharmacology; D013329:Structure-Activity Relationship
chemical_list: D000577:Amides; D000893:Anti-Inflammatory Agents; D016207:Cytokines; D007166:Immunosuppressive Agents; D009569:Nitric Oxide; D009963:Orotic Acid