- Synthesis of antimicrobial agents. VI. Studies on the synthesis of furo[3,2-b][1,8]naphthyridine derivatives
-
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.
- Hayakawa,Suzuki,Suzuki,Tanaka
-
p. 4914 - 4922
(2007/10/02)
-
- Furonaphthyridine compounds
-
2,3,5,8-Tetrahydrofuro- and 5,8-dihydrofuro[3,2-b]-1,8-naphthyridine compounds of the formula (I) STR1 wherein R1 represents an alkyl group having 1 to 6 carbon atoms and M represents a hydrogen atom, an alkali metal or an alkaline earth metal having anti-bacterial activity.
- -
-
-