Biphenyl derivative of the formula: ##STR1## wherein R.sup.1 is hydrogen atom or a lower alkoxycarbonyl group and R.sup.2 is a lower alkoxycarbonyl group, or R.sup.1 and R.sup.2 are combined together to form a group of the formula: each of R.sup.3 and R.sup.4 is a lower alkoxy group; and Ring A is a substituted or unsubstituted sulfur-containing or nitrogen-containing heterocyclic ring, with the claims being drawn to Ring A as thiophene and a pharmaceutically acceptable salt thereof are disclosed. Said biphenyl derivative (I) and its salt have excellent hypolipidemic activity and are useful for treatment or prophylaxis of hyperlipidemia and/or arterioscelerosis.
化合物的
化学式为:##STR1##其中R.sup.1是氢原子或低级烷氧羰基基团,R.sup.2是低级烷氧羰基基团,或R.sup.1和R.sup.2结合形成一个式子的基团:其中每个R.sup.3和R.sup.4是低级烷氧基基团;环A是取代或未取代的含
硫或含氮杂环,其权利要求涉及环A为
噻吩及其药学上可接受的盐。所述的双苯衍
生物(I)及其盐具有出色的降脂作用,并可用于治疗或预防高脂血症和/或动脉硬化。