申请人:Roussel Uclaf
公开号:US04762840A1
公开(公告)日:1988-08-09
Novel pyrimido[2,1-b]benzothiazoles of the formula ##STR1## wherein R and R.sub.3 are individually selected from the group consisting of hydrogen and alkyl of 1 to 6 carbon atoms or taken together with the carbon to which they are attached form a cycloalkyl of 3 to 6 carbon atoms, R.sub.1 is selected from the group consisting of hydroxy, alkoxy of 1 to 12 carbon atoms, cycloalkyl of 7 to 12 carbon atoms, and ##STR2## R.sub.5 and R.sub.6 are individually selected from the group consisting of hydrogen and alkyl of 1 to 6 carbon atoms or taken together with the nitrogen form piperidino or morpholino, R.sub.2 is selected from the group consisting of hydrogen, alkyl of 1 to 6 carbon atoms, alkoxycarbonyl of 2 to 7 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, heteroaryl, aralkyl and optionally substituted aryl with at least one substituent selected from the group consisting of halogen, nitro, and alkyl and alkoxy of 1 to 6 carbon atoms and their salts with non-toxic, pharmaceutically acceptable acids and bases having antiallergic activity.
新型嘧啶并[2,1-b]苯并噻唑的化学式为##STR1##其中R和R.sub.3分别选自氢和1至6个碳原子的烷基的群,或与其连接的碳形成3至6个碳原子的环烷基;R.sub.1选自羟基、1至12个碳原子的烷氧基、7至12个碳原子的环烷基和##STR2##;R.sub.5和R.sub.6分别选自氢和1至6个碳原子的烷基,或与氮形成哌啶基或吗啉基;R.sub.2选自氢、1至6个碳原子的烷基、2至7个碳原子的烷氧羰基、3至6个碳原子的环烷基、杂环芳烃、芳基烷基和至少有一个卤素、硝基、1至6个碳原子的烷基和烷氧基等基团的选择性取代的芳基;以及其与无毒、药理学上可接受的酸和碱形成的盐,具有抗过敏活性。