抄録
Two compounds were isolated as active components of the female sex pheromone of the peach fruit moth, Carposina niponensis WALSHINGHAM. The major components was identified as (Z)-7-eicosen-11-one, and the minor one was suggested to be (Z)- or (E)-7-nonadecen-11-one. (Z)-7-Tricosen-11-one was also isolated but this compound was not biologically active. (Z)- and (E)-isomers of 7-alken-11-ones of carbon numbers ranging from 17 to 23 were synthesized. Biological activity of synthetic (Z)-7-eicosen-11-one (compound A) and (Z)-7-nonadecen-11-one (compound B) as attractants for male moths was verified in the field. The activity was synergistically enhanced by mixing the two compounds in the ratio of 20 to 1 for compound A to compound B.
