Novel N-benzylpiperazine derivatives of the general formula ##STR1## wherein R.sup.1 and R.sup.2 are same or different and each stands for a hydrogen atom or an acyl group; R.sup.3 stands for a hydrogen atom; a carbamoyl group, an acyl group which is unsubstituted or substituted by mercapto or morpholino, or an alkyl group which is unsubstituted or substituted by hydroxy, aryl or aminocarbonyl represented by the formula ##STR2## wherein each of R.sup.4 and R.sup.5 is a hydrogen atom, a lower alkyl group having 1 to 3 carbon atoms or a cyclohexyl group, or R.sup.4 and R.sup.5 form a morpholino or piperidino ring together with the nitrogen atom adjacent thereto, and X stands for a halogen atom, and pharmaceutically acceptable acid addition salts thereof. These compounds and salts thereof have respiratory tract fluid secretion stimulatory properties and are useful as medicines such as respiratory track fluid secretion stimulators.
一种通式为##STR1##的新型N-苄基
哌嗪衍
生物,其中R.sup.1和R.sup.2相同或不同,每个都代表氢原子或酰基;R.sup.3代表氢原子;一种羰基基团,一种未取代或取代为巯基或吗啉基的酰基基团,或一种未取代或取代为羟基、芳基或
氨基甲酰基的烷基基团,其表示如下##STR2##其中R.sup.4和R.sup.5中的每一个都是氢原子,具有1至3个碳原子的较低烷基基团或环己基基团,或者R.sup.4和R.sup.5与相邻的氮原子一起形成吗啉基或
哌啶基环,X代表卤原子,以及其药学上可接受的酸盐。这些化合物及其盐具有刺激呼吸道分泌液的特性,可用作呼吸道分泌液刺激剂等药物。