New pyrazolo-pyrrolo-pyrimidine-dione (PPPD) compounds of formula (I), ##STR1## where R.sub.1, R.sub.2, R.sub.3, R.sub.4 and m are as defined in the specification, e.g., 4-(benzoylmethyl)-6-cyclohexyl-6,7-dihydro-2-phenyl-4H-pyrazolo[1,5-a]pyrr olo[3,4-d]pyrimidine-5,8-dione, have been found to be potentially useful to treat warm-blooded animal patients suffering from the symptoms of atherosclerosis and cholesterol buildup to relieve the same and for favorably altering the high density lipoprotein (HDL) to low density lipoprotein (LDL) ratio in blood samples of such patients.
新的
吡唑并
吡咯并
嘧啶二酮(PPPD)化合物的分子式为(I),其中R.sub.1,R.sub.2,R.sub.3,R.sub.4和m的定义如规范中所述,例如4-(苯甲酰甲基)-6-环己基-6,7-二氢-2-苯基-4H-
吡唑并[1,5-a]
吡咯并[3,4-d]
嘧啶-5,8-二酮,发现这些化合物可能有用于治疗患有动脉硬化和
胆固醇堆积症状的温血动物患者,并缓解症状,有利地改变这些患者血样中高密度脂蛋白(HDL)与低密度脂蛋白(LDL)比率。