Zobrazeno 1 - 10
of 212
pro vyhledávání: '"Siegfried Huneck"'
Publikováno v:
Collection of Czechoslovak Chemical Communications. 76:1687-1697
Spectroscopic examination of some historical samples from the terpene collection of Prof. H. Wienhaus resulted in the structure elucidation of dieucarvelones A, B and C, products of treatment of eucarvone with zinc in alkali and in confirmation of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2c13c4b854b72aefe9a059dee2153be
https://doi.org/10.1135/cccc2011120
https://doi.org/10.1135/cccc2011120
Publikováno v:
Environmental Pollution. 157:2776-2780
The depsidone fumarprotocetraric acid as well as the depsides perlatolic and thamnolic acids are lichen secondary metabolites. Their first dissociation constants (pK(a1)) in methanol were determined to be 2.7 for perlatolic acid and 2.8 for fumarprot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3afdcd42dd594c161630c679504df7c8
https://doi.org/10.1016/j.envpol.2009.04.022
https://doi.org/10.1016/j.envpol.2009.04.022
Publikováno v:
Flora - Morphology, Distribution, Functional Ecology of Plants. 202:471-478
Lichen substances are shown to increase or to inhibit the adsorption of Fe at cation exchange sites. The influence on the adsorption strongly differs between individual lichen substances and is different for Fe2+ and Fe3+. These results add a new bio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd102c89ed51d9ff122d3a95daf4cd7b
https://doi.org/10.1016/j.flora.2006.08.007
https://doi.org/10.1016/j.flora.2006.08.007
Autor:
Siegfried Huneck, Markus Hauck
Publikováno v:
The Lichenologist. 39:301-304
Hauck & Huneck (2007) and Hauck et al. (2007) established that lichen secondary chemistry is related to metal absorption in the apoplast of lichens. Depsidones occurring in the medulla of the Mn2+ and Cu2+-sensitive epiphytic lichen Hypogymnia physod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::546ecefaab670da718416d176a1af5c9
https://doi.org/10.1017/s0024282907006664
https://doi.org/10.1017/s0024282907006664
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 76:368-370
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bb5d0cac8b47b8e8539304d68bb12e9
https://doi.org/10.1002/bscb.19670760510
https://doi.org/10.1002/bscb.19670760510
Publikováno v:
Phytochemistry. 51:563-566
A new acorane-type sesquiterpenoid has been isolated from Finnish Barbilophozia barbata, together with one known dolabellane- and two known fusicoccane-type diterpenoids. B. hatcheri and Ptilidium ciliare afforded previously known barbatane-, daucane
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc346cb6a593a6ffa2193c64fb987d22
https://doi.org/10.1016/s0031-9422(99)00061-8
https://doi.org/10.1016/s0031-9422(99)00061-8
Autor:
Siegfried Huneck, Isao Yoshimura
This handbook is an indispensable tool for the isolation, identification and structural analysis of the approx. 700 substances currently known to occur in lichens. The first part covers all necessary methods for the analysis of lichen metabolites; th
Publikováno v:
Tetrahedron. 53:9219-9232
The regioselectivity of deprotonation/alkylation reactions of η6-1,3-dimethoxybenzene-Cr(CO)3 (5), η6-1,3-dimethoxy-5-methylbenzene-Cr(CO)3 (6) and 2-substituted derivatives of these compounds was investigated. It is shown that the regioselectivity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95dbb06804175f7739add45b412976bd
https://doi.org/10.1016/s0040-4020(97)00620-0
https://doi.org/10.1016/s0040-4020(97)00620-0
Publikováno v:
Herzogia. 12:39-43
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c2b43b13ce6e5ecc708ee76d00d3ea9
https://doi.org/10.1127/herzogia/12/1997/39
https://doi.org/10.1127/herzogia/12/1997/39
Autor:
Shigeru Takaoka, Yoshinori Asakawa, Fumihiro Nagashima, Shiori Momosaki, Yuko Watanabe, Siegfried Huneck
Publikováno v:
Phytochemistry. 42:1361-1366
A new myltaylane-type sesquiterpene alcohol and nine known sesquiterpenoids were isolated from Bazzania trilobata. The absolute stereostructure of (1S,4S)-cis-5-hydroxycalamenene was revised to be (1R,4R)-cis-5-hydroxycalamenene by the X-ray crystall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4373c67161c783725e22ddfe26a81bb2
https://doi.org/10.1016/0031-9422(96)00105-7
https://doi.org/10.1016/0031-9422(96)00105-7