Abstract
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-dimethyl-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.
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