| Title: | "Syntheses, characterizations, and biological activities of tetradeca-4,8-dien-1-yl acetates as sex attractants of leaf-mining moth of the genus Phyllonorycter (Lepidoptera: Gracillariidae)" |
| Author(s): | Liblikas I; Mozuraitis R; Santangelo EM; Noreika R; Borg-Karlson AK; |
| Address: | "Ecological Chemistry Group, Division of Organic Chemistry, Department of Chemistry, School of Chemical Science and Engineering, Royal Institute of Technology, SE-10044 Stockholm" |
| ISSN/ISBN: | 1612-1880 (Electronic) 1612-1872 (Linking) |
| Abstract: | "The four possible isomers of tetradeca-4,8-dien-1-yl acetate and corresponding alcohols were synthesized stereoselectively by synthetic routes employing Wittig coupling reaction for the preparation of (Z,E)- and (Z,Z)-isomers, and alkylation of terminal alkynes for the preparation of (E,E)- and (E,Z)-isomers as the key steps. Synthetic products were characterized by 13C- and 1H-NMR spectroscopy as well as mass-spectrometric methods. All four isomers gave distinctive mass spectra where m/z 81 fragments clearly dominated. Elution order, followed by retention index presented in parenthesis, of tetradeca-4,8-dien-1-ols was determined as (Z,Z) (2082.1), (Z,E) (2082.8), (E,E) (2083.1), and (E,Z) (2083.2) from unpolar SPB-1 column, and as (E,E) (2210.2), (Z,E) (2222.1), (E,Z) (2223.4), and (Z,Z) (2224.7) from polar DB-WAX column. The isomers of tetradeca-4,8-dien-1-yl acetates eluted in the order of (Z,Z) (2176.1), (Z,E) (2178.4), (E,Z) (2185.9), and (E,E) (2186.4) from SPB-1, and (Z,E) (2124.3), (E,E) (2157.7), (Z,Z) (2128.9), and (E,Z) (2135.9) from DB-WAX columns. Field-screening tests for attractiveness of tetradeca-4,8-dien-1-yl acetates revealed that (4Z,8E)-tetradeca-4,8-dien-1-yl acetate significantly attracted Phyllonorycter coryli and Chrysoesthia drurella males. (4E,8E)-Tetradeca-4,8-dien-1-yl acetate was the most efficient attractant for Ph. esperella and Ph. saportella males, and (4E,8Z)-tetradeca-4,8-dien-1-yl acetate was attractive to Ph. cerasicolella males" |
| Keywords: | Animals Fatty Alcohols/*chemical synthesis/chemistry/pharmacology Gas Chromatography-Mass Spectrometry Lepidoptera/*chemistry Male Sex Attractants/*chemical synthesis/chemistry/pharmacology Stereoisomerism; |
| Notes: | "MedlineLiblikas, Ilme Mozuraitis, Raimondas Santangelo, Ellen M Noreika, Remigijus Borg-Karlson, Anna-Karin eng Research Support, Non-U.S. Gov't Switzerland 2009/09/24 Chem Biodivers. 2009 Sep; 6(9):1388-403. doi: 10.1002/cbdv.200800210" |
