73101-79-8Relevant articles and documents
Condensed 4-aminopyridines with antirheumatic activity
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, (2008/06/13)
Compounds of formula I STR1 and pharmaceutically acceptable salts thereof in which one of A or B represents N and the other represents N or C--R3 ; R1 represents hydrogen, halo, alkyl, hydroxy, carboxyalkenyl, alkoxycarbonylalkenyl, hydroxyalkyl, carboxyalkyl, alkoxycarbonylalkyl, alkoxy, halogenated alkyl, carboxy, alkoxycarbonyl, alkanoylamino or carbamoylalkenyl; R2 represents hydrogen, alkyl, halo, alkoxy, hydroxy, alkanoyloxy, or phenoxy; R3 represents hydrogen or alkyl; R4 represents hydrogen, halo, alkoxycarbonyl, cyano, benzyloxycarbonyl, alkanoyl, benzoyl, alkyl, carboxy, alkylthio or carbamoyl; R5 represents hydrogen or alkyl; R9 represents hydrogen or alkyl; R10 represents phenyl, pyridyl or pyrimidinyl substituted by OR6 and optionally further substituted wherein R6 represents hydrogen, alkyl, alkoxycarbonyl or carbamoyl, alicyclic hydrocarbon, phenyl, cycloalkylalkyl, arylalkyl or pyridyl; or when R10 represents phenyl, OR6 represents a monosaccharide group or a disaccharide group; which are antirheumatic agents. Compositions containing these compounds and processes to prepare them are also disclosed.
Synthesis of antimicrobial agents. VI. Studies on the synthesis of furo[3,2-b][1,8]naphthyridine derivatives
Hayakawa,Suzuki,Suzuki,Tanaka
, p. 4914 - 4922 (2007/10/02)
As a part of our search for new antibacterial agents, 5-ethyl-8-oxo-5,8-dihydrofuro[3,2-b][1,8]naphthyridine-7-carboxylic acid and its 2,3-dihydrofuro derivative, the 4-aza analogue of droxacin, were synthesized and their antibacterial activities were tested. Both compounds exhibited high antibacterial activities and a broad antibacterial spectrum. In an attempt to find a suitable method for industrial-scale synthesis of these compounds, several methods for the furan ring cyclization of 6,7-disubstituted 1,8-naphthyridine-3-carboxylate derivatives were compared.