The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action and effective as a remedy for acute hepatitis and chronic hepatitis, a process for the preparation of this biphenyl derivative and a liver ailment-moderating agent comprising this diphenyl derivative as an effective ingredient. This diphenyl derivative is represented by the following formula: ##STR1## wherein R.sub.0 and R.sub.1 independently stand for a lower alkyl group or R.sub.0 and R.sub.1 together represent a group O.dbd.C<, R.sub.2 stands for an alkyl group having 1 to 3 carbon atoms, and R.sub.3 and R.sub.4 independently stand for a hydrogen atom or a lower alkyl group.
本发明涉及一种新型
联苯衍
生物,具有调节肝脏疾病作用,可作为急性肝炎和慢性肝炎的治疗药物,以及制备该
联苯衍
生物的方法和以该
联苯衍
生物作为有效成分的肝脏疾病调节剂。该
联苯衍
生物由以下公式表示:##
STR1## 其中R.sub.0和R.sub.1独立地代表较低的烷基或R.sub.0和R.sub.1一起代表一个O.dbd.C<的基团,R.sub.2代表具有1至3个
碳原子的烷基,R.sub.3和R.sub.4独立地代表
氢原子或较低的烷基。