title: Synthesis and properties of the derivatives of 2-alkylthio-4-oxo-3,4- (and -1,4)-dihydropyrido-[2,3-d]pyrimidine-5- and -6-carboxylic acids.
abstract: Condensation of diethyl 2-amino-6-methylpyridine-3,4-dicarboxylate (I) with the corresponding isothiocyanates afforded derivatives of ethyl 4-oxo-2-thioxo-1,2,3,4-tetrahydropyrido [2,3-d]pyrimidine-5-carboxylate (V-VII). Alkylation of (V), (VI) and (XI) gave the corresponding derivatives of ethyl 2-alkylthio-4-oxo-3,4-(and 1,4)-dihydropyrido[2,3-d]pyrimidine-5- and -6- carboxylate [(XII-XVI), (XX-XXII)]. Some of the obtained compounds were active pharmacologically.
authors.affiliation: Department of Chemistry of Drugs, School of Medicine, Wroclaw, Tamka, Poland.
authors.forename: H
authors.initials: H
authors.lastname: Sladowska
authors.forename: A
authors.initials: A
authors.lastname: Bartoszko-Malik
authors.forename: T
authors.initials: T
authors.lastname: Zawisza
mesh_terms: D000374:Aggression / Q000187:drug effects; D000700:Analgesics; D000818:Animals; D000927:Anticonvulsants; D007928:Lethal Dose 50; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D009043:Motor Activity / Q000187:drug effects; D011725:Pyridines / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D011744:Pyrimidinones / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D051381:Rats
chemical_list: D000700:Analgesics; D000927:Anticonvulsants; D011725:Pyridines; D011744:Pyrimidinones