申请人:Tanabe Seiyaku Co., Ltd.
公开号:US04948810A1
公开(公告)日:1990-08-14
Novel phenoxyacetic acid derivative of the formula: ##STR1## wherein R is a substituted or unsubstituted phenyl group, naphthyl group or a sulfur-containing 5-membered hetero-monocyclic group, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are hydrogen atom, a lower alkyl group, a phenyl-lower alkyl group or phenyl group, R.sup.5 is hydrogen atom or a lower alkyl group, R.sup.6 is carboxyl group, a protected carboxyl group, hydroxy group or a di(lower alkyl)-amino group, Ring A is a substituted or unsubstituted phenylene group, m is 0 or 1 and n is an integer 0 to 5, provided that, when m is 0, (1) at least either one of R.sup.1 to R.sup.4 is or/are a phenyl-lower alkyl group or phenyl group, (2) at least either one of R.sup.1 to R.sup.4 is or/are a lower alkyl group, and R.sup.6 is hydroxy group, or (3) all of R.sup.1 to R.sup.4 are hydrogen atom, and Ring A is a substituted phenylene group, or a pharmaceutically acceptable salt thereof are disclosed. Said derivative (I) and a pharmaceutically acceptable salt thereof have a potent platelet aggregation-inhibiting activity.
式(I)所示的新型苯氧乙酸衍生物:##STR1##其中R为取代或未取代的苯基、萘基或含硫的5元杂单环基团,R1、R2、R3和R4为氢原子、低级烷基、苯基低级烷基或苯基,R5为氢原子或低级烷基,R6为羧基、保护的羧基、羟基或二(低级烷基)氨基,环A为取代或未取代的亚苯基,m为0或1,n为0至5的整数,条件是,当m为0时,(1)R1至R4中至少有一个为或为苯基低级烷基或苯基,(2)R1至R4中至少有一个为或为低级烷基,且R6为羟基,或(3)R1至R4全部为氢原子,且环A为取代的亚苯基,或其药学上可接受的盐。所述衍生物(I)及其药学上可接受的盐具有强效的血小板聚集抑制活性。