Compounds of formula (I): ##STR1## wherein: R.sup.1 represents a saturated heterocyclic group attached to the bond or group represented by A through a ring carbon atom; R.sup.2a, R.sup.2b, R.sup.2c, R.sup.3a, R.sup.3b, R.sup.3c and R.sup.3d are hydrogen or various other groups or atoms; and A represents a single bond or an alkylene group having from 1 to 6 carbon atoms are serotonin 2 receptor antagonists and have the ability to inhibit the activity of squalene synthase. They can not only prevent and inhibit the development and progression of arteriosclerosis but can also inhibit thrombosis in arteriosclerotic lesions and can improve hemodynamics.
式(I)的化合物:其中:R.sup.1代表通过环碳原子连接到由A表示的键或基团的饱和杂环基团;R.sup.2a、R.sup.2b、R.sup.2c、R.sup.3a、R.sup.3b、R.sup.3c和R.sup.3d为氢或各种其他基团或原子;A表示单键或具有1至6个碳原子的烷基基团是5-羟
色胺2受体拮抗剂,并具有抑制
角鲨烯合酶活性的能力。它们不仅可以预防和抑制动脉粥样硬化的发展和进展,还可以抑制动脉粥样硬化病变中的血栓形成,并可以改善血液动力学。