The maior alkaloid of the leaves of Aglaia pirifera (Meliaceae) has been iso- lated and characterized as a new bis amide of 2-aminopyrrolidine. The new alkaloid, named piriferine [1], was identified as N-cinnamoyl-2-(2-methylpropanoylamino)-pyrrolidine by analysis of spectral data. © 1988, American Chemical Society. All rights reserved.