title: Synthesis and pharmacological evaluation of some 8-cyanopyrido[3', 2':4,5]thieno[3,2-d]triazine derivatives as inhibitors of nitric oxide and eicosanoid biosynthesis.
abstract: A series of 8-cyanopyrido[3',2':4,5]thieno[3,2-d]-1,2,3-triazines, substituted at C-4 and C-7, were synthesized and evaluated as nitric oxide and prostaglandin E(2) inhibitors in murine peritoneal macrophages stimulated with bacterial endotoxin. Several compounds exhibited considerable activity, compounds 10 and 13 being the most interesting ones with IC(50) values of 11.2 and 3.4 microM on nitrites and 0.9 and 0.6 microM on prostaglandin E(2) production, respectively. None of the examples of pyridothienotriazines that were active at 10 microM showed any effect on inducible nitric oxide synthase, cyclooxygenase-2, and cyclooxygenase-1 enzymes, suggesting that they act by modifiying the level of expression of these inducible enzymes.
authors.affiliation: Departamento de Química Fundamental, Universidad de La Coruña, La Coruña, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Quintela
authors.forename: C
authors.initials: C
authors.lastname: Peinador
authors.forename: L M
authors.initials: LM
authors.lastname: González
authors.forename: R
authors.initials: R
authors.lastname: Riguera
authors.forename: I
authors.initials: I
authors.lastname: Rioja
authors.forename: M C
authors.initials: MC
authors.lastname: Terencio
authors.forename: A
authors.initials: A
authors.lastname: Ubeda
authors.forename: M J
authors.initials: MJ
authors.lastname: Alcaraz
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D051546:Cyclooxygenase 2; D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D015232:Dinoprostone / Q000037:antagonists & inhibitors* / Q000096:biosynthesis; D004791:Enzyme Inhibitors / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D007527:Isoenzymes / Q000378:metabolism; D017737:Macrophages, Peritoneal / Q000187:drug effects; D051379:Mice; D009569:Nitric Oxide / Q000037:antagonists & inhibitors* / Q000096:biosynthesis; D019001:Nitric Oxide Synthase / Q000037:antagonists & inhibitors; D052247:Nitric Oxide Synthase Type II; D011451:Prostaglandin-Endoperoxide Synthases / Q000378:metabolism; D013329:Structure-Activity Relationship; D013876:Thiophenes / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D014227:Triazines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology
chemical_list: C401391:7-(N-4'-acetylphenylpiperazino)-8-cyano-4-chloropyrido(3',2'-4,5)thieno(3,2-d)-1,2,3-triazine; C401392:8-cyano-4-(4-methylpiperidino)-7-morpholinopyrido(3',2'-4,5)thieno(3,2-d)-1,2,3-triazine; D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors; D004791:Enzyme Inhibitors; D007527:Isoenzymes; D013876:Thiophenes; D014227:Triazines; D009569:Nitric Oxide; D019001:Nitric Oxide Synthase; D052247:Nitric Oxide Synthase Type II; C496317:Nos2 protein, mouse; D051546:Cyclooxygenase 2; D011451:Prostaglandin-Endoperoxide Synthases; D015232:Dinoprostone