A Chinese court on Tuesday sentenced a former leading official, Sun Zhengcai, to life in prison for taking more than $26 million in bribes, making him one of the biggest names to fall in President Xi Jinping’s campaign against corruption and disloyalty.

Mr. Sun’s sentence, handed down by the intermediate court in the northern port city of Tianjin, appears to end a career that had once been seen as propelling Mr. Sun to the apex of power in the ruling Communist Party.

In addition to being imprisoned, Mr. Sun was deprived of political rights for life and all his personal property was confiscated.

State broadcaster CCTV showed Mr. Sun in court accepting the sentence and stating that he would not appeal.