Compounds are disclosed of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen or trifluoromethyl; R.sub.2 is selected from the group consisting of lower alkylthio together with the sulfoxide and sulfone thereof, halo, lower alkylamino or lower alkoxy; Y is oxo or thio; R.sub.3 is selected from the group consisting of hydrogen, --COOR.sub.4 wherein R.sub.4 is hydrogen or lower alkyl, --CONR.sub.6 R.sub.5 wherein R.sub.5 and R.sub.6 are hydrogen or lower alkyl; X is hydrogen or halogen; and R.sub.7 is lower alkyl or hydrogen and the pharmaceutically acceptable salts and N-oxides thereof. Also presented are processes to produce the above compounds and intermediates therefor and derivatives thereof.
本发明揭示了下式化合物:##STR1## 其中,R.sub.1是氢、卤素或三
氟甲基;R.sub.2选自由下列组成的群体:较低烷基
硫醚及其亚砜和
磺酸酯、卤素、较低烷基
氨基或较低烷氧基;Y是氧代或
硫代;R.sub.3选自由下列组成的群体:氢、--COOR.sub.4,其中R.sub.4是氢或较低烷基,--CONR.sub.6 R.sub.5,其中R.sub.5和R.sub.6是氢或较低烷基;X是氢或卤素;R.sub.7是较低烷基或氢,以及其药学上可接受的盐和N-氧化物。还提供了制备上述化合物及其中间体和衍
生物的方法。