title: Anthracenone ABA analogue as a potential photoaffinity reagent for ABA-binding proteins.
abstract: An anthracenone analogue of abscisic acid (ABA) was synthesized as a potential photoaffinity reagent and tested for biological activity. Reaction between 10,10'-dimethoxy-9-anthrone with two equivalents of the lithiated dianion of cis-3-methylpent-2-en-4-yn-1-ol afforded an acetylenic alcohol key intermediate. Subsequent reduction of the triple bond, functional group manipulation of the side chain alcohol and deprotection of the dimethoxy protected anthrone provided anthracenone ABA analogue 7 as a potential photoaffinity reagent for ABA-binding proteins. The effect of natural ABA and the potential photoaffinity anthracenone ABA 7 on corn cell growth was determined at various concentrations. The results show that anthracenone ABA 7 is perceived as ABA-like, although producing less inhibition than ABA itself. For example, 7 at 33 microM produces approximately the same inhibition as ABA at 10 microM.
authors.affiliation: Plant Biotechnology Institute, National Research Council of Canada, Saskatoon, Sask, Canada.
authors.forename: N M
authors.initials: NM
authors.lastname: Irvine
authors.forename: P A
authors.initials: PA
authors.lastname: Rose
authors.forename: A J
authors.initials: AJ
authors.lastname: Cutler
authors.forename: T M
authors.initials: TM
authors.lastname: Squires
authors.forename: S R
authors.initials: SR
authors.lastname: Abrams
mesh_terms: D000040:Abscisic Acid / Q000031:analogs & derivatives* / Q000378:metabolism; D000873:Anthracenes / Q000737:chemistry*; D002478:Cells, Cultured; D019920:Photoaffinity Labels; D010940:Plant Proteins / Q000378:metabolism*; D011485:Protein Binding; D013057:Spectrum Analysis; D003313:Zea mays / Q000166:cytology / Q000378:metabolism
chemical_list: D000873:Anthracenes; D019920:Photoaffinity Labels; D010940:Plant Proteins; D000040:Abscisic Acid