4<i>H</i>-1-benzothiopyran-4-one-3-carboxylic acids and 3,4-dihydro-2<i>H</i>-isothiazolo[5,4-<i>b</i>benzothiopyran-3,4-diones as quinolone antibacterial analogs
作者:Violetta Cecchetti、Arnaldo Fravolini、Renata Fringuelli、Fausto Schiaffella、Maria Cristina Lorenzini、Oriana Tabarrini
DOI:10.1002/jhet.5570300455
日期:1993.7
of quinolone antibacterial nucleus with a sulfur atom was investigated. A series of 1-benzothiopyran-4-one-3-carboxylic acids 14–16 and isothiazolo-[5,4-b][1]benzothiopyran-3,4-diones 22–24, suitably functionalized with a fluorine atom at C-6 and heterocyclic base at C-7, were prepared. The antibacterial evaluation of the target compounds showed an activity comparable to that of nalidixic acid for
研究了在喹诺酮抗菌核的1位上用硫原子取代氮原子的环内过程。一系列1-苯并噻喃-4-一-3-羧酸14-16和异噻唑并-[5,4- b ] [1]苯并噻喃-3,4-二酮22-24,在C处被氟原子适当地官能化了制备-6和C-7处的杂环碱。对目标化合物的抗菌评估显示,与化合物14-16的萘啶酸的活性相当,而对化合物22-24的革兰氏阳性菌活性增强。