The present invention is concerned with novel 4-aryl-3/4-amino/hydroxy-piperidine derivatives of the general formula I: ##STR1## wherein R.sub.1 represents hydrogen; lower alkyl; lower aralkyl; lower acyl; aminoalkyl, wherein the alkyl moiety contains 2 to 6 carbon atoms and the amino moiety may be mono- or dialkyl substituted --(CH.sub.2).sub.n --COOH; --(CH.sub.2).sub.n --OH; ##STR2## wherein X is hydrogen or halogen and n is 1, 2, 3 or 4; one of R.sub.2 and R.sub.3 represents a cyano, or a free amino group or a derivative thereof and the other represents a free or protected hydroxyl group; or R.sub.2 represents an azido group when R.sub.3 represents a free or protected hydroxyl group, or R .sub.2 and R.sub.3 together with their associated ring carbons represent an oxazepine ring, and Ar represents an aryl group which may be substituted by lower alkyl, lower alkoxy, halogen or CF.sub.3 , as well as addition salts thereof with organic or inorganic acids. Compounds of formula I generally have useful biological properties and in particular, some such compounds had been found to exhibit inter alia, significant antidepressant activity. Illustrative of compounds of formula I is 1-methyl-4-phenyl-4-acetoxy-3-(4-piperidinyl)piperidine. The present invention also provides processes for the production of, and pharmaceutical compositions containing the novel compounds of formula I.
本发明涉及一种新的4-芳基-3/4-
氨基/羟基
哌啶衍
生物,其一般式为I:其中R1代表氢;低碳基;低芳基烷基;低酰基;
氨基烷基,其中烷基部分含有2到6个碳原子,
氨基部分可以是单烷基或双烷基取代的--(
CH2)n--COOH;--( )n--OH;其中X为氢或卤素,n为1、2、3或4;R2和R3中的一个代表
氰基,或自由
氨基或其衍
生物,另一个代表自由或保护的羟基;或者R2代表偶氮基,当R3代表自由或保护的羟基时,或者R2和R3与它们相关联的环碳共同代表氧杂
环庚烷环,Ar代表芳基基团,可以被低碳基、低烷氧基、卤素或
CF3取代,以及与有机或
无机酸形成的加合盐。一般来说,式I的化合物具有有用的
生物学性质,特别是一些这样的化合物被发现具有显著的抗抑郁活性。式I的化合物的例子是1-甲基-4-苯基-4-乙酰氧基-3-(4-
哌啶基)
哌啶。本发明还提供了制备式I的新化合物的方法和含有这些新化合物的药物组合物。