The sex pheromone of Hemileuca eglanterina from the San Gabriel Mountains, California, was determined to be a combination of E10,Z12-hexadeca-10, 12-dien-1-yl acetate, E10,Z12-hexadeca-10, 12-dien-1-ol, and E10,Z12-hexadeca-10,12-dienal. Ratios of the compounds in extracts of female pheromone glands varied around a mean of 100:48: 1.1 of the acetate, alcohol, and aldehyde, respectively. Field trials with synthetic compounds indicated that the optimum ratio of alcohol to aldehyde was 10:1 and that this ratio was more critical than the ratio of either compound to the acetate. A synthetic blend of 100:10:1 acetate-alcohol-aldehyde was effective at attracting male moths in the field. Additional compounds found in both extract and aeration samples failed to significantly increase trap catches of male moths, although some of these minor components elicited responses from male moth antennae in coupled gas chromatography-electroantennography studies.
New stereospecific syntheses of pheromone bombykol and its three geometrical isomers
作者:Norio Miyaura、Hiroshi Suginome、Akira Suzuki
DOI:10.1016/s0040-4039(00)81700-1
日期:——
We describe stereospecific syntheses of pheromone, bombykol and the threegeometricalisomers by means of the palladium-catalyzed cross-coupling between an appropriate alkenylborane and an alkenyl halide in the presence of a base.
Synthesis of both enantiomers of akolactone B and (+)-ancepsenolide
作者:Gen Hikosaka、Yasunao Hattori、Hidefumi Makabe
DOI:10.1016/j.tetasy.2014.08.008
日期:2014.10
The syntheses of (+)- and (-)-akolactone B and (+)-ancepsenolide were accomplished using a Pd-catalyzed carbonylation. As to the absolute configuration of akolactone B, making a comparison of the specific rotation of both enantiomers of synthetic akolactone B and the natural compound suggests that the absolute configuration at the 4-position of akolactone B is (R). (C) 2014 Elsevier Ltd. All rights reserved.
Stereo- and regiospecific syntheses to provide conjugated (E,Z)- and (Z,Z)-alkadienes, and arylated (Z)-alkenes in excellent yields via the palladium-catalyzed cross-coupling reactions of (Z)-1-alkenylboronates with 1-bromoalkenes and aryl iodides
作者:Norio Miyaura、Makoto Satoh、Akira Suzuki
DOI:10.1016/s0040-4039(00)83869-1
日期:1986.1
DOOLITTLE, R. E.;BRABHAM, A.;TUMLINSON, J. H., J. CHEM. ECOL., 16,(1990) N, C. 1131-1153