A compound represented by the formula (1): ##STR1## wherein, m is an integer of 1 to 3; n is an integer 0 or 1; A represents CH or N atom, and forms together with the N atom bonded to the carbonyl group a piperidine ring or a piperazine ring; R.sub.1 independently represents a straight or branched chain alkyl group having 1 to 4 carbon atoms; a cycloalkyl group having 3 to 8 carbon atoms; a phenyl group, unsubstituted or substituted with a halogen atom or with an alkoxy group having 1 to 4 carbon atoms; or a pyridyl group; or two R.sub.1, together with the group >CH-- to which they bind, form a dibenzo cycloheptenyl group or a fluorenyl group; R.sub.2 represents a phenyl group substituted with a carboxyl or substituted carboxyl group; a pyridyl group substituted with a carboxyl or substituted carboxyl group, a pyrazyl group substituted with a carboxyl or substituted carboxyl group, an oxazolyl substituted with a carboxyl or substituted carboxyl group, a triazolyl substituted with one or two carboxyl or substituted carboxyl groups, or a phosphonopyridyl group; and R.sub.3 represents an indolyl group unsubstituted or substituted with a substituent selected from the group consisting of a halogen atom, a hydroxy group, an alkoxy group having 1 to 4 carbon atoms and methoxycarbonyl ethyl group and the pharmaceutically acceptable salts thereof.
一种由以下式表示的化合物(1):
其中,m为1至3的整数;n为0或1的整数;A代表CH或N原子,并与结合到羰基的N原子一起形成
哌啶环或
哌嗪环;R.sub.1独立地表示具有1至4个碳原子的直链或支链烷基基团;具有3至8个碳原子的环烷基基团;一个苯基,未取代或取代有含有1至4个碳原子的卤原子或烷氧基团;或
吡啶基;或两个R.sub.1,与它们结合的>CH--基团一起,形成一个
二苯并环庚烯基团或一个
芴基团;R.sub.2代表取代有羧基或取代羧基基团的苯基;取代有羧基或取代羧基基团的
吡啶基,取代有羧基或取代羧基基团的
吡啶基,取代有羧基或取代羧基基团的
噁唑基,取代有羧基或取代羧基基团的
噁唑基,取代有一或两个羧基或取代羧基基团的三唑基,或
磷酸吡啶基;和R.sub.3代表未取代或取代有来自由卤原子、羟基、含有1至4个碳原子的烷氧基团和甲氧羰基乙基基团的取代基的
吲哚基团及其药学上可接受的盐。