Syntheses of 6-fluoro-7-piperazin-1-yl-9-cyclopropyl-2,3,4,9-tetrahydroisothiazolo[5,4-<i>b</i>]quinoline-3,4-dione and 6-fluoro-7-piperazin-1-yl-9-<i>p</i>-fluorophenyl-2,3,4,9-tetrahydroisothiazolo[5,4-<i>b</i>]quinoline-3,4-dione
作者:Daniel T. W. Chu
DOI:10.1002/jhet.5570270404
日期:1990.5
9-p-fluorophenyl)-2,3,4,9-tetrahydroisothiazolo[5,4-b]quinoline-3,4-diones as well as novel synthesis of isothiazolo-3(2H)-one system are described. Key steps include the regiospecific displacement of a sulfinyl group and the amination of the resultant mercapto derivative followed by an intramolecular nucleophilic displacement cyclization reaction to generate the novel 2,3,4,9-tetrahydroisothiazolo[5,4-b]quinoline-3
6-氟-7-哌嗪-1-基-9-环丙基(或9-对氟苯基)-2,3,4,9-四氢异噻唑并[5,4 - b ]喹啉-3,4-二酮的合成以及异噻唑-3-3(2 H)一系统的新型合成方法进行了描述。关键步骤包括亚硫酰基的区域特异性置换和所得巯基衍生物的胺化,然后进行分子内亲核置换环化反应,以生成新颖的2,3,4,9-四氢异噻唑并[5,4 - b ]喹啉-3, 4-二酮核。