Novel carbostyril derivatives and their salts, having antihistaminic effect and central nervous system controlling effect, are represented by the general formula (1), ##STR1## wherein R.sup.1 is a hydrogen atom, a lower alkyl group, a phenyl-lower alkyl group, a lower alkenyl group, a lower alkynyl group; A is a group of the formula ##STR2## (wherein R.sup.2 is a hydrogen atom or a lower alkyl group); B is a lower alkylene group; l is 1 when A is a group of the formula ##STR3## or l is 0 or 1 when A is a group of the formula ##STR4## Z is a group of the formula >N--R.sup.3 or ##STR5## (wherein R.sup.3, R.sup.4 and R.sup.5 are as defined herein).
新型的羧基苯基
丙胺衍
生物及其盐,具有抗
组胺作用和中枢神经系统控制作用,其通式表示为(1),其中R1是氢原子,低碳基,苯基-低碳基,低烯基,低炔基;A是公式(2)的基团,其中R2是氢原子或低碳基;B是低碳基亚烷基基团;当A是公式(3)的基团时,l为1,当A是公式(4)的基团时,l为0或1;Z是公式(5)的基团,其中R3、R4和R5如本文所定义。