Among the alkaloids of the tubers of Stephania pierrii are the new bisbenzylisoquinolines (+)-2-norisotetrandrine [1], (+)-stepierrine [2], (+)-2'-norobaberine [3], (+)-stephibaberine [5], (+)-2'-norcepharanthine [6], (+)-2-norcepharanoline [7], and (—)-2-norisocepharanthine [9]. © 1989, American Chemical Society. All rights reserved.