申请人:Takeda Chemical Industries, Ltd.
公开号:US04997836A1
公开(公告)日:1991-03-05
Novel trisubstituted piperazine compounds of the formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are lower alkyl groups; A is a phenyl group, a hydrocarbon group formed by condensation of two or three 5- to 8-membered rings, a monocyclic 5- to 8-membered heterocyclic group containing 1 to 3 hetero-atoms selected from the class consisting of nitrogen, oxygen and sulfur, a dicyclic heterocyclic group formed by condensation of a benzene ring with a 5- to 8-membered hetero-ring containing 1 to 3 hetero-atoms selected from the class consisting of nitrogen, oxygen and sulfur, a tricyclic heterocyclic group formed by condensation of (i) a 5- to 8-membered hetero-ring containing 1 to 3 hetero-atoms selected from the class consisting of nitrogen, oxygen and sulfur, and (ii) a benzene ring, and (iii) a benzene ring or a 5- to 8-membered hetero-ring containing 1 to 3 hetero-atoms selected from the class consisting of nitrogen, oxygen and sulfur, or a styryl group of the formula: Ar--CR.sup.4 .dbd.CR.sup.5 -- wherein Ar is a phenyl group, and R.sup.4 and R.sup.5 are independently hydrogen or a lower alkyl group, the phenyl group represented by A or Ar, the hydrocarbon group represented by A, the monocyclic 5- to 8-membered heterocyclic group represented by A, the dicyclic heterocyclic group represented by A and the tricyclic heterocyclic group represented by A being unsubstituted or substituted by one or more substituents selected from the class consisting of a lower alkyl group, a halo lower alkyl group, a hydroxy lower alkyl group, an acyloxy lower alkyl group, a lower alkoxy lower alkyl group, a lower alkoxy group, a halo lower alkoxy group, a lower alkoxycarbonyl lower alkoxy group, a lower alkenyloxy group, aralkyloxy group, a lower alkoxy lower alkoxy group, a lower alkoxycarbonyl group, carboxyl group, carbamoyl group, an N,N-di-lower alkylcarbamoyl group, an N-lower alkylcarbamoyl group, halo group, cyano group, nitro group, hydroxy group, acyloxy group, amino group, a lower alkylsulfonylamino group, acylamino group, a lower alkoxycarbonylamino group, acyl group, mercapto group, a lower alkylthio group, a lower alkylsulfinyl group, a lower alkylsulfonyl group and oxo group; X is methylene group, carbonyl group or thiocarbonyl group and G is a group of the formula: --CH.sub.2 --.sub.n Z--R.sup.6 wherein n is an integer of 0 to 2, Z is a chemical bond, O, S, SO, SO.sub.2, CO, COO, OCO, OCONR.sup.7, CONR.sup.7 or NR.sup.7 (wherein R.sup.7 is hydrogen, a lower alkyl group, a lower haloalkyl group, a lower alkenyl group or a lower alkoxycarbonyl group), and R.sup.6 is hydrogen, a lower alkyl group, a lower haloalkyl group or a lower alkenyl group, provided that, when n is O and Z is chemical bond, R.sup.6 is not hydrogen or a lower alkyl group are useful as a platelet activating factor antagonist.
新型三取代哌嗪化合物的化学式(I)及其药用盐:##STR1## 其中R.sup.1、R.sup.2和R.sup.3为较低的烷基基团;A为苯基、由两个或三个5至8成员环缩合形成的烃基团、含有1至3个异原子(选自氮、氧和硫)的单环5至8成员杂环基团、由苯环与含有1至3个异原子(选自氮、氧和硫)的5至8成员杂环环缩合形成的二环杂环基团、由(i)含有1至3个异原子(选自氮、氧和硫)的5至8成员杂环环和(ii)苯环缩合形成的三环杂环基团,以及(iii)苯环或含有1至3个异原子(选自氮、氧和硫)的5至8成员杂环环或化学式为Ar--CR.sup.4 .dbd.CR.sup.5--的苯乙烯基团:其中Ar为苯基,R.sup.4和R.sup.5独立地为氢或较低的烷基基团,由A或Ar表示的苯基,由A表示的烃基团,由A表示的单环5至8成员杂环基团,由A表示的二环杂环基团以及由A表示的三环杂环基团未被取代或被选自较低烷基基团、卤代较低烷基基团、羟基较低烷基基团、酰氧基较低烷基基团、较低烷氧基较低烷基基团、较低烷氧基、卤代较低烷氧基、较低烷氧羰基较低烷氧基、较低烯氧基、芳基氧基、较低烷氧较低烷氧基、较低烷氧羰基基团、羧基、氨基、较低烷基磺酰氨基、酰胺基、较低烷氧羰胺基、酰基、巯基、较低烷硫基、较低烷硫氧基、较低烷磺基和氧代基所选的一个或多个取代基所取代;X为亚甲基基团、羰基或硫代羰基,G为化学式:--CH.sub.2--.sub.n Z--R.sup.6,其中n为0至2的整数,Z为化学键、O、S、SO、SO.sub.2、CO、COO、OCO、OCONR.sup.7、CONR.sup.7或NR.sup.7(其中R.sup.7为氢、较低烷基基团、较低卤代烷基基团、较低烯基基团或较低烷氧羰基基团),R.sup.6为氢、较低烷基基团、较低卤代烷基基团或较低烯基基团,但当n为O且Z为化学键时,R.sup.6不为氢或较低烷基基团,可用作血小板活化因子拮抗剂。