A compound of formula: ##STR1## in which: Ar represents a pyrid-2-yl or a phenyl which is unsubstituted or substituted by a halogen, a methyl or a (C.sub.1 -C.sub.4)alkoxy; R.sub.1 represents a methyl group; R.sub.11 represents hydrogen; or R.sub.1 and R.sub.11 together represent a --(CH.sub.2).sub.3 -- group; R.sub.2 represents a hydroxyl; a (C.sub.1 -C.sub.7)alkoxy; a (C.sub.1 -C.sub.7)acyloxy; a cyano; an --NR.sub.6 R.sub.7 group; an --NR.sub.3 COR.sub.4 group; an --NR.sub.3 COOR.sub.8 group; an --NR.sub.3 SO.sub.2 R.sub.9 group; an --NR.sub.3 CONR.sub.10 R.sub.12 group; a (C.sub.1 -C.sub.7)acyl group; a (C.sub.1 -C.sub.7)alkoxycarbonyl; a --CONR.sub.10 R.sub.12 group; a --CH.sub.2 OH group; a (C.sub.1 -C.sub.7)alkoxymethyl; a (C.sub.1 -C.sub.7)acyloxymethyl; a (C.sub.1 -C.sub.7)alkylaminocarbonyloxymethyl; a --CH.sub.2 NR.sub.13 R.sub.14 group; a --CH.sub.2 NR.sub.3 COR.sub.4 group; a --CH.sub.2 NR.sub.3 COOR.sub.8 group; a --CH.sub.2 NR.sub.3 SO.sub.2 R.sub.9 group; a --CH.sub.2 NR.sub.3 CONR.sub.10 R.sub.12 group; or R.sub.2 constitutes a double bond between the carbon atom to which it is attached and the adjacent carbon atom of the piperidine ring; or Ar and R.sub.2, together with the carbon atom to which they are attached, constitute a group of formula: ##STR2## which is NK.sub.3 antagonists.
公式为:##STR1## 其中:Ar代表一个未取代或取代的卤素、甲基或(C.sub.1-C.sub.4)烷氧基的
吡啶-2-基或苯基; R.sub.1代表一个甲基基团; R.sub.11代表氢; 或者R.sub.1和R.sub.11一起代表一个--(CH.sub.2).sub.3--基团; R.sub.2代表一个羟基; 一个(C.sub.1-C.sub.7)烷氧基; 一个(C.sub.1-C.sub.7)酰氧基; 一个
氰基; 一个--NR.sub.6 R.sub.7基团; 一个--NR.sub.3 COR.sub.4基团; 一个--NR.sub.3 COOR.sub.8基团; 一个--NR.sub.3 SO.sub.2 R.sub.9基团; 一个--NR.sub.3 CONR.sub.10 R.sub.12基团; 一个(C.sub.1-C.sub.7)酰基; 一个(C.sub.1-C.sub.7)烷氧羰基; 一个--CONR.sub.10 R.sub.12基团; 一个--CH.sub.2 OH基团; 一个(C.sub.1-C.sub.7)烷氧甲基; 一个(C.sub.1-C.sub.7)酰氧甲基; 一个(C.sub.1-C.sub.7)烷基
氨基羰氧甲基; 一个--CH.sub.2 NR.sub.13 R.sub.14基团; 一个--CH.sub.2 NR.sub.3 COR.sub.4基团; 一个--CH.sub.2 NR.sub.3 COOR.sub.8基团; 一个--CH.sub.2 NR.sub.3 SO.sub.2 R.sub.9基团; 一个--CH.sub.2 NR.sub.3 CONR.sub.10 R.sub.12基团; 或者R.sub.2构成它所附着的碳原子与
哌啶环相邻的碳原子之间的双键; 或者Ar和R.sub.2,连同它们所附着的碳原子,构成一个公式为:##STR2##的化合物,它是NK.sub.3拮抗剂。