申请人:Ciba-Geigy Corporation
公开号:US04649149A1
公开(公告)日:1987-03-10
The invention relates to a process for the manufacture of novel benzazole derivatives of the formula I ##STR1## in which R.sub.1 represents an optionally 4-substituted piperazino group or a group of the formula R.sub.2 --alk--X.sub.2 --, R.sub.2 represents optionally esterified carboxy or represents hydroxymethyl, alk represents lower alkylene or lower alkylidene, X.sub.1 and X.sub.2, independently of one another, each represents oxygen or sulphur, Ph represents 1,2-phenylene optionally substituted as well as by the group R.sub.1 --C(.dbd.X.sub.1)--NH--, X.sub.3 represents oxygen, sulphur or optionally substituted imino, and R.sub.3 represents optionally fluorine-substituted lower alkyl or cycloalkyl, and their salts. The compounds of the formula I, which have proved to be excellent micro- and macrofilaricides and schistosomacides, are manufactured according to methods known per se.
本发明涉及一种制备式I的新型苯并咪唑衍生物的方法,其中R.sub.1代表可选的4-取代哌嗪基团或式R.sub.2-alk-X.sub.2-的基团,R.sub.2代表可选的酯化羧基或代表羟甲基,alk代表较低的烷基或较低的烷基亚甲基,X.sub.1和X.sub.2分别独立地代表氧或硫,Ph代表可选的1,2-苯基取代,以及由基团R.sub.1-C(.dbd.X.sub.1)-NH-取代的1,2-苯基,X.sub.3代表氧、硫或可选取代的亚胺基,R.sub.3代表可选的氟取代的较低烷基或环烷基,以及它们的盐。公式I的化合物已被证明是优秀的微小和巨大丝虫杀虫剂和血吸虫杀虫剂,根据已知的方法制备。