Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Jan VRKOČ"'
Publikováno v:
European Journal of Entomology, Vol 102, Iss 4, Pp 655-662 (2005)
The semiochemical relationships in a predator-prey-host plant system were studied by a series of multiple-choice field assays. The studied system included predatory flies of the genus Medetera (Diptera: Dolichopodidae), the bark beetles Ips typograph
Externí odkaz:
https://doaj.org/article/95806b9032964cf99ee8c7a23e87f967
Publikováno v:
Journal of Applied Entomology. 130:275-283
Semiochemical interactions between the spruce bark beetle Ips typographus, its predators Medetera setiventris, Thanasimus formicarius and Thanasimus femoralis, and the host Norway spruce, Picea abies, were studied in the field. The chemicals S-cis-ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::351e57ab604f754004ee2c169d0cc1b9
https://doi.org/10.1111/j.1439-0418.2006.01069.x
https://doi.org/10.1111/j.1439-0418.2006.01069.x
Publikováno v:
European Journal of Entomology, Vol 102, Iss 4, Pp 655-662 (2005)
The semiochemical relationships in a predator-prey-host plant system were studied by a series of multiple-choice field assays. The studied system included predatory flies of the genus Medetera (Diptera: Dolichopodidae), the bark beetles Ips typogra-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8df6dbe1915d32944327d3fd13b7f280
https://www.eje.cz/artkey/eje-200504-0013_Exploitation_of_kairomones_and_synomones_by_Medetera_spp_Diptera_Dolichopodidae_predators_of_spruce_bark_b.php
https://www.eje.cz/artkey/eje-200504-0013_Exploitation_of_kairomones_and_synomones_by_Medetera_spp_Diptera_Dolichopodidae_predators_of_spruce_bark_b.php
Autor:
Randy C. Morgan, Qing Huang, Vikram K. Iyengar, Athula B. Attygalle, Thomas Eisner, Zhicai Yang, Jerrold Meinwald, Jan Vrkoč, Kithsiri Herath, Frank Schröder
Publikováno v:
Proceedings of the National Academy of Sciences. 95:2733-2737
The sunburst diving beetle, Thermonectus marmoratus , ejects a milky fluid from its prothoracic defensive glands when disturbed. Two major volatile components of this secretion are steroids; cybisterone (structure 7) constitutes about 20% of the vola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dcbb1ae2073594633556d57d3742306
https://doi.org/10.1073/pnas.95.6.2733
https://doi.org/10.1073/pnas.95.6.2733
Autor:
Blanka Kalinova, Bohumír Koutek, Michal Hoskovec, Jan Vrkoč, Kamil Vlcek, Oldrich Hovorka, Aleš Svatoš, David Šaman
Publikováno v:
Collection of Czechoslovak Chemical Communications. 63:1031-1044
New analogues of (Z)-dodec-8-en-1-yl acetate (Z8-12:OAc, 1), the main sex pheromone component of the Oriental fruit moth, Cydia molesta, were designed by formally transferring the terminal propyl group from the C-9 to the C-7 position to form vinyl-b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad36f47ed30ed1560539e19e404abad3
https://doi.org/10.1135/cccc19981031
https://doi.org/10.1135/cccc19981031
Autor:
Jan Vrkoč, Zdenka Huňková, Bohumír Koutek, Vladimír Křen, Aleš Svatoš, David Šaman, Irena Valterová, Michal Hoskovec
Publikováno v:
Tetrahedron: Asymmetry. 7:1285-1294
The stereoselectivity of the reduction of rac-3-methyl-1-(phenylsulfonyl)hexan-2-one (1) to 3-methyl-1-(phenylsulfonyl)hexan-2-ol (2) diastereomers by more than 20 yeasts was studied. Reduction of carbonyl group in 1 proceeds with a high Re-face enan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc69594f6bdf96be1daa683df94e1a72
https://doi.org/10.1016/0957-4166(96)00145-0
https://doi.org/10.1016/0957-4166(96)00145-0
Publikováno v:
Journal of Chromatography A. 719:391-400
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2099a49b41079e15814baf3e86b2db78
https://doi.org/10.1016/0021-9673(95)00740-7
https://doi.org/10.1016/0021-9673(95)00740-7
Publikováno v:
Biochemical Systematics and Ecology. 23:1-15
Monoterpene hydrocarbons from the xylem oleoresins of Pinus tropicalis, P. caribaea var. caribaea, P. cubensis and P. maestrensis growing in Cuba were investigated. A large number of oleoresin samples from trees, attacked and unattacked by the moth D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d7b6261d78e248eef42394db3860872
https://doi.org/10.1016/0305-1978(94)00072-o
https://doi.org/10.1016/0305-1978(94)00072-o
Publikováno v:
Journal of Chromatography A. 679:307-317
Equilibrium vapour pressures of six saturated and seventy-four mono-unsaturated C10-C16 even-carbon aldehydes were determined using a method based on gas chromatographic (GC) retention data. GC measurements were carried out on a 3-m HP-1 capillary co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35d3f40b67490d2b7d1ea7b1333df769
https://doi.org/10.1016/0021-9673(94)80573-3
https://doi.org/10.1016/0021-9673(94)80573-3
α,α-Disubstituted Allyl Sulfones: An approach to the synthesis of vinyl-branched pheromone analogues
Autor:
Michal Hoskovec, Bohumír Koutek, Josef Lazar, Blanka Kalinová, Eva Brožová, Ludvík Streinz, Jan Vrkoč
Publikováno v:
Helvetica Chimica Acta. 77:1281-1287
The two-step alkylation of phenyl prop-2-enyl sulfone (1) with protected ω-bromoalkanols and 1-iodoalkanes (3; see Scheme 1) followed by a Pd-catalyzed desulfonylation with LiBH4 affords a 96:4 mixture of vinylbranched, protected alcohols and corres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d98dff5b783dd936833ddc430fdf1bc9
https://doi.org/10.1002/hlca.19940770510
https://doi.org/10.1002/hlca.19940770510