title: Stereochemistry of alpha-parinaric acid fromImpatiens edgeworthii seed oil.
abstract: alpha-Parinaric acid is a major constituent fatty acid (48%) fromImpatiens edgeworthii Hook F. seed oil. Partial hydrazine reduction of the tetraene gave products which permit defining the stereochemistry of alpha-parinaric acid. Its structure iscis-9,trans-11,trans-13,cis-15-octadecatetraenoic acid. The tetraene readily reacts with maleic anhydride to give the Diels-Alder product with notrans-unsaturation. The formation of this adduct is contrary to previous reports.
authors.affiliation: Northern Regional Research Laboratory, Peoria, Illinois.
authors.forename: M O
authors.initials: MO
authors.lastname: Bagby
authors.forename: C R
authors.initials: CR
authors.lastname: Smith
authors.forename: I A
authors.initials: IA
authors.lastname: Wolff