From the leaves of Zanthoxylum ailanthoides, 4′-O-p-E-coumaric acid esters of 2-propanol β-Dglucopyranoside, megastigmane and megastigmane glucosides were isolated. Their structures were elucidated by spectroscopic evidence. The absolute configurations of the megastigmane and aglycone of megastigmane glucosides were determined by the octant rule and modified Mosher's method after protection of carboxylic acids by p-bromophenacyl esters and primary alcohols by pivaloyl esters.

From the leaves of Zanthoxylum ailanthoides, four new phenolic glucosides, termed zanthosides A-D(1-4), were isolated. Their structures were elucidated by means of spectroscopic evidence. Zanthoside A was enzymatically hydrolyzed and thus the aglycone obtained was found to be (1′S,2′R)-( )-trans-decursidinol, isolated from Angelica decursiva.