Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Hans-Erik Högberg"'
Publikováno v:
Insects, Vol 12, Iss 10, p 886 (2021)
Extracts of Diprion similis females contained about 15 ng of the sex pheromone precursor 3,7-dimethylpentadecan-2-ol per female. After derivatisation with (S)-2-acetoxypropanoyl chloride, we found that the major stereoisomer in the extract was (2S,3R
Externí odkaz:
https://doaj.org/article/c10b16b24dd74bbabc7d9d26c7c3c80a
Publikováno v:
Insects
Volume 12
Issue 10
Insects, Vol 12, Iss 886, p 886 (2021)
Volume 12
Issue 10
Insects, Vol 12, Iss 886, p 886 (2021)
Extracts of Diprion similis females contained about 15 ng of the sex pheromone precursor 3,7-dimethylpentadecan-2-ol per female. After derivatisation with (S)-2-acetoxypropanoyl chloride, we found that the major stereoisomer in the extract was (2S,3R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ecf2b58e3f4dffd55a0d64cdc2ed1d5
Publikováno v:
Tetrahedron: Asymmetry. 17:1074-1080
The enantiomers of the naturally occurring alkaloid dihydropinidine 1, potential antifeedants against the pine weevil, Hylobius abietis, were prepared by diastereoselective, dimethylzinc mediated ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cab13f12215df4c5c4052d1ba27141d4
https://doi.org/10.1016/j.tetasy.2006.03.033
https://doi.org/10.1016/j.tetasy.2006.03.033
Publikováno v:
Tetrahedron: Asymmetry. 17:275-280
Thiophenol was added to racemic cryptone (4-isopropyl-2-cyclohexene-1-one) and the resulting 1,4-addition products, cis- and trans-4-isopropyl-3-(phenylsulfanyl)cyclohexanone) were separated and the latter reduced to rac-1,3-cis-1,4-trans-4-isopropyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26fb87557e3c70103e948b6182dcbd27
https://doi.org/10.1016/j.tetasy.2005.12.012
https://doi.org/10.1016/j.tetasy.2005.12.012
Autor:
Yun Zhang, Hongbin Wang, Shuzhi Zhou, Zhen Zhang, Olle Anderbrant, Erik Hedenström, Guo-Fa Chen, Hans-Erik Högberg
Publikováno v:
Journal of Applied Entomology. 129:368-374
The pine sawfly, Diprion jingyuanensis Xiao et Zhang, is a serious pest of Chinese pine (Pinus tabulaeformis Carr.) in the northern parts of China. The general biology of this recently described sawfly species is little known and in the present study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9540bdda8fd0e72231b8d4f68d971e5d
https://doi.org/10.1111/j.1439-0418.2005.00983.x
https://doi.org/10.1111/j.1439-0418.2005.00983.x
Publikováno v:
Tetrahedron: Asymmetry. 16:2607-2611
The four stereoisomeric 3-bromo-2-butanols and/or their acetates were prepared via lipase-catalysed kinetic resolution by hydrolyses of the acetates of the (+/-)-syn- and (+/-)-anti-3-bromo-2-but ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ee483f939a8bd4d21957f5b50aeec8b
https://doi.org/10.1016/j.tetasy.2005.06.028
https://doi.org/10.1016/j.tetasy.2005.06.028
Autor:
Marie-Anne Auger-Rozenberg, Gunnar Bergström, Werner Heitland, Fredrik Östrand, Annette Herz, Erik Hedenström, C. Geri, Hans-Erik Högberg, Ann-Britt Wassgren, Olle Anderbrant
Publikováno v:
Chemoecology. 15:147-151
The first identification of a sex pheromone of a pine sawfly (Hymenoptera, Diprionidae) dates back almost thirty years. Since then, female-produced pheromones of over twenty diprionid species have been investigated by solvent extraction followed by s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e70a33bcbea21ca2b8e57b8a904eacf
https://doi.org/10.1007/s00049-005-0306-8
https://doi.org/10.1007/s00049-005-0306-8
Publikováno v:
Journal of Applied Entomology. 128:610-619
The monoterpenoid carvone (1) has been shown to have strong antifeedant effects on Hylobius spp. However, because of the high volatility of carvone, long-time protection of conifer seedlings in the field using this compound has not been possible. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f15ddd0d3d78bf91b73be1d27f03569
https://doi.org/10.1111/j.1439-0418.2004.00889.x
https://doi.org/10.1111/j.1439-0418.2004.00889.x
Publikováno v:
Nordic Pulp & Paper Research Journal. 19:525-531
Tannins are polymeric, phenolic constituents found in the bark of pine and spruce. When reacting with iron ions, tannins form strongly coloured complexes. Thus, the presence of bark in the mechanical pulping process leads to decreased brightness of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24386d799d13d12c16bdff8ba8c7db06
https://doi.org/10.3183/npprj-2004-19-04-p525-531
https://doi.org/10.3183/npprj-2004-19-04-p525-531
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 31:31-37
Lipase-catalysed transesterifications of vinyl esters with various sterically hindered secondary alcohols sometimes give hemiacetals and hemiacetal esters as major side-products along with the expected esters, especially in the presence of aldehydes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::072f28fcdf105a96a268965080b41e0e
https://doi.org/10.1016/j.molcatb.2004.07.004
https://doi.org/10.1016/j.molcatb.2004.07.004