Piperazine derivatives, their acid addition salts and a process for the preparation of same
申请人:SPOFA
spojené podniky pro zdravotnickou vyrobu
公开号:EP0321100A3
公开(公告)日:1990-08-01
Pharmaceutically active piperazine derivatives, particularly piperazines substituted in position 1 with a 2-(2-chloro-10,11-dihydrodibenzo(b,f)thiepin-10-yloxy)ethyl residue and in position 4 a hydrogen atom or a methyl, 2-hydroxyethyl, 3-hydroxypropyl, 2-(aminocarbonyl)ethyl, 2-(acetoxy)ethyl or 2 (decanoyloxy)ethyl group, their acid addition salts and processes for the preparation thereof. The compounds are noncataleptic neuroleptics with high affinity to dopamine D-2 receptors and with in vivo antidopaminergic activity but only slight sedative, adrenolytic and anticholinergic properties; but use as antipsychotic drugs free of undesirable side effects. Said compounds are available by several routes, such as (a) reaction of 10-(2-bromo-ethoxy)-2-chloro-10,11-dihydrodibenzo(b,f)thiepin with piperazine, 1-methylpiperazine, 2-(1-piperazinyl)ethanol, or 3-(1 piperazinyl)propanol and (b) acylation of aminoalcohols obtained by the preceding method with chlorides of the corresponding aliphatic carboxylic acids. Preferred addition salts are succinates, maleates, hydrochlorides and methanesulphonates prepared by the respective neutralization reactions.
具有药理活性的
哌嗪衍
生物,特别是在1位上被2-(2-
氯-10,11-二氢二苯并(b,f)
噻吩-10-氧基)乙基残基取代的
哌嗪,以及在4位上为氢原子或甲基,2-羟乙基,3-羟基丙基,2-(
氨基甲酰基)乙基,
2-乙酰氧基乙基或2-(
癸酸氧基)乙基基团的衍
生物,它们的酸加成盐以及其制备方法。这些化合物是非卡他性神经元受体拮抗剂,具有高亲和力与
多巴胺D-2受体以及在体内的抗
多巴胺能活性,但只有轻微的镇静,
肾上腺素拮抗和抗
胆碱能性质。它们可用作
抗精神病药物,没有不良副作用。这些化合物可通过多种途径获得,例如(a) 10-(2-
溴乙氧基)-2-
氯-10,11-二氢二苯并(b,f)
噻吩与
哌嗪,1-甲基
哌嗪,2-(1-
哌嗪基)
乙醇或3-(1-
哌嗪基)
丙醇的反应以及(b)由前一方法得到的
氨基醇与相应脂肪族
羧酸的
氯化物的酰化反应。优选的加成盐是
琥珀酸盐,
马来酸盐,盐酸盐和
甲磺酸盐,通过相应的中和反应制备。