Synthesis of antimicrobial agents. VI. Studies on the synthesis of furo(3,2-b)(1,8)naphthyridine derivatives.
作者:ISAO HAYAKAWA、NORIO SUZUKI、KAZUNORI SUZUKI、YOSHIAKI TANAKA
DOI:10.1248/cpb.32.4914
日期:——
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.
作为我们寻找新型抗菌剂的一部分,合成了5-乙基-8-氧-5,8-二氢呋喃[3,2-b]-[1,8]萘啶-7-羧酸及其2,3-二氢呋喃衍生物,即droxacin的4-氮类似物,并测试了它们的抗菌活性。两种化合物均表现出高抗菌活性和广谱抗菌性。为了寻找适用于工业规模合成这些化合物的合适方法,比较了几种6,7-二取代的1,8-萘啶-3-羧酸酯衍生物的呋喃环环合方法。