Author's Organization：Department of Chemistry, Faculty of Science, The University of Tokyo Department of Chemistry, Faculty of Science, The University of Tokyo Department of Chemistry, Faculty of Science, The University of Tokyo Department of Chemistry, Faculty of Science, The University of Tokyo
The structures of two new bitter principles, nigakihemiacetals E and F, isolated from Picrasma ailanthoides PLANCHON were shown to be 1 and 2, respectively.
