Enantioselective synthesis and absolute configuration of the sex pheromone of Hedypathes betulinus (Coleoptera: Cerambycidae)
作者:Diogo M. Vidal、Marcy G. Fonseca、Paulo H.G. Zarbin
DOI:10.1016/j.tetlet.2010.10.024
日期:2010.12
The male-produced sex pheromone of Hedypathes betulinus was identified as a mixture of (E)-6,10-dimethyl-5,9-undecadien-2-one (geranylacetone) (1) and its respective alcohol (2) and acetate (3). Kinetic resolution of alcohol (2) promoted by CAL-B in organic media provided both, (R)-(-)-(E)-6,10-dimethy1-5,9-undecadien-2-yl acetate (3) and (S)-(+)-(E)-6,10-dimethyl-5,9-undecadien-2-ol (2) in high enantiomeric purity. Comparative GC analysis using a chiral column revealed the natural constituents as being (R)-(3) and a mixture of (R)- and (S)-(2) in a ratio of 82.3% and 17.6%, respectively. (C) 2010 Elsevier Ltd. All rights reserved.