申请人:Bayer Aktiengesellschaft
公开号:US04920136A1
公开(公告)日:1990-04-24
For promoting livestock production, the novel substituted pyridylethanolamines of the formula ##STR1## in which R.sup.1 represents CN, --COOR.sup.8 or --CONR.sup.9 R.sup.10, R.sup.2 represents optionally substituted alkyl, R.sup.3 represents hydrogen, alkyl or alkenyl, R.sup.4 represents hydrogen or optionally substituted alkyl or alkenyl, or R.sup.3 and R.sup.4 represent, together with the nitrogen atom to which they are bonded, an optionally substituted heterocyclic radical, R.sup.5 represents OH, acyloxy or alkoxy, R.sup.6 represents hydrogen or alkyl, R.sup.7 represents hydrogen, alkyl, cycloalkyl, substituted alkyl, optionally substituted aralkyl, aryl or heterocyclyl, R.sup.6 and R.sup.7 can, together with the nitrogen atom to which they are bonded, represent an optionally substituted heterocyclic radical, R.sup.8 represents alkyl, and R.sup.9 and R.sup.10, independently of one another, represent hydrogen, alkyl or alkenyl or, together with the nitrogen atom to which they are bonded, represent an optionally substituted heterocyclic radical, or a physiologically tolerated salt or N-oxide thereof. Some intermediates are also new.
为促进畜牧业生产,该新方法使用了化学式为##STR1##的吡啶基乙醇胺替代物,其中R.sup.1代表CN,--COOR.sup.8或--CONR.sup.9 R.sup.10,R.sup.2代表可选取代烷基,R.sup.3代表氢,烷基或烯基,R.sup.4代表氢或可选取代烷基或烯基,或R.sup.3和R.sup.4与它们所连接的氮原子一起表示可选取代的杂环基,R.sup.5代表OH,酰氧基或烷氧基,R.sup.6代表氢或烷基,R.sup.7代表氢,烷基,环烷基,取代烷基,可选取代的芳基烷基,芳基或杂环基,R.sup.6和R.sup.7可以与它们所连接的氮原子一起表示可选取代的杂环基,R.sup.8代表烷基,R.sup.9和R.sup.10独立地表示氢,烷基或烯基,或与它们所连接的氮原子一起表示可选取代的杂环基,或其生理耐受的盐或N-氧化物。其中一些中间体也是新的。