title: A new oviposition deterrent to the leafminer, Liriomyza trifolii: cucurbitane glucoside from Momordica charantia.
abstract: A new cucurbitane glucoside, 23-O-beta-D-glucopyranosyl-7-hydroxy-3-O-malonylcucurbita-5,24-dien-19-al, named momordicine V, has been isolated from Momordica charantia leaves, along with the previously reported compounds, momordicines I, II, IV and 3-O-malonylmomordicine I. The structure of the new compound was established on the basis of spectral analysis, as well as by its conversion to momordicine II by alkaline catalyzed hydrolysis. Momordicine V deterred significantly the oviposition by L. trifolii on host plant leaves treated at 26.16 microg/cm2 leaf surface.
authors.affiliation: Department of Bioresources Science, Faculty of Agriculture, Kochi University, B200 Monobe, Nankoku 783-8502, Japan.
authors.forename: Takehiro
authors.initials: T
authors.lastname: Kashiwagi
authors.forename: Daniel Bisrat
authors.initials: DB
authors.lastname: Mekuria
authors.forename: Aman
authors.initials: A
authors.lastname: Dekebo
authors.forename: Keiko
authors.initials: K
authors.lastname: Sato
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Tebayashi
authors.forename: Chul-Sa
authors.initials: CS
authors.lastname: Kim
mesh_terms: D000818:Animals; D005260:Female; D005960:Glucosides / Q000302:isolation & purification / Q000494:pharmacology*; D006027:Glycosides / Q000302:isolation & purification / Q000494:pharmacology*; D029777:Momordica charantia / Q000737:chemistry*; D009117:Muscidae / Q000187:drug effects / Q000502:physiology*; D010058:Oviposition / Q000187:drug effects*; D018515:Plant Leaves / Q000737:chemistry; D014315:Triterpenes / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D005960:Glucosides; D006027:Glycosides; D014315:Triterpenes; C514277:cucurbitane