Synthesis and Characterization of 3,13- and 2,13-Octadecadienyl Compounds for Identification of the Sex Pheromone Secreted by a Clearwing Moth,Nokona pernix

Identification of the sex pheromone secreted by Synanthedon hector (Lepidoptera: Sesiidae)

“…In addition, we identified another dienyl acetate as a third component; therefore, field evaluation of the synthetic pheromones was carried out by focusing upon the activity of the geometrical isomers of the 3,13-dienyl acetates and the effect of the third component on the activity of the conventional two-component lure. In addition, we examined the effects on attractiveness of male S. hector by E3,Z13-18:OH or Z3,Z13-18:OH, while these compounds were also important key pheromone compounds for some clearwing species (Naka et al, 2006;Ando, 2008).…”

Female Sex Pheromone Secreted byCarmenta mimosa(Lepidoptera: Sesiidae), a Biological Control Agent for an Invasive Weed in Vietnam

“…7,8) Note 3,13-diene and a (2Z,13Z)-isomer of the 2,13-diene. 9) The mass spectra of the two acetates have many aspects of similarity, but the relative intensity between two ions at m=z 248 and 67 of the 3,13-diene is smaller than that of the 2,13-diene. The value for the natural pheromone coincides well with that for the 3,13-diene.…”

“…The value for the natural pheromone coincides well with that for the 3,13-diene. Since the two positional isomers of octadecadien-1-ol have been more clearly differentiated by their GC-MS data than the isomers of the acetate, 9) the acetate component in the crude extract (5.0 FE) was saponified with K 2 CO 3 , and the resulting alcohol was analyzed by GC-MS. The chromatographic behavior (KI, 2684) and small relative intensity (1%) of the ion at m=z 248 confirmed the 3,13-dienyl structure of the natural pheromone.…”

“…Based on the GC-EAD and GC-MS analyses, a field attraction study of C. mimosa males with the synthetic pheromone candidate and related compounds, which had been supplied by Shin-etsu Chemical Co. or synthesized in our previous studies, 9,12) was carried out in Can Tho City. Each test compound (>98% purity) was applied to a rubber septum (white rubber, 9 mm OD, SigmaAldrich), and the lure was placed at the center of a sticky board trap (SE-trap Ò , 30 cm  27 cm bottom plate with a roof; Sankei Chemical) which was hung at 1.5 m in height in an area with abundant M. pigra.…”

“…a Column temperature: 80 C for 2 min and 8 C/min to 210 C. b Published data for synthetic standards. 9) Column temperature: 100 C for 2 min, 20 C/min to 175 C and 6 C/min to 220 C.…”