By Stefan Schulz
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Extra info for The Chemistry of Pheromones and Other Semiochemicals I (Topics in Current Chemistry) (No.1)
Sample text
Honmai and the redbanded leafroller (Argyrotaenia velutinana) and 52 species in Olethreutinae including C. pomonella and the Oriental fruit moth (Grapholita molesta). The Tortricinae species usually secret C14 components that are generally unsaturated at the 11-position. The 11-tetradecenyl (11–14) compounds have been identified from 66 Tortricinae species, whereas C12 components have been found from only 7 species in this group. In addition, field tests using the synthetic 11–14 compounds attracted another 72 Tortricinae species.
The unsaturation is observed at more than 40% of the possible positions. Double bonds at odd-numbered positions are more predominant than those at even-numbered positions, and an unsaturation at the 11-position occurs in all even-numbered chain skeletons. Compounds monounsaturated at the 4- or 6-positions have not been identified, although an odd-numbered chain component, E4–13:OAc, has been identified. Currently, it is a rare occurrence to find a component unsaturated at a new position, as double bonds at the 10-position in a C12 chain and the 3-position Fig.
Type I Compounds with Unique Structures . . . . . . . Structures of Pheromones in Type II . . . . . . . . . Structures of Other Female Pheromones . . . . . . . . Male Sex Pheromones . . . . . . . . . . . . . Reproductive Isolation by Sex Pheromones . . . . . . . . . . . . . . . . . . . . . . . . 4 Current Techniques for Structure Determination . . . Collection of Pheromones and Evaluation of Their Activity GC-MS Analysis . . . . . .