Zobrazeno 1 - 10
of 235
pro vyhledávání: '"Otmar Hofer"'
Publikováno v:
Magnetic Resonance in Chemistry. 48:83-88
Phytochemical analysis of different organs of the rutaceaeous plant Severinia buxifolia led to the isolation of a new limonoid, a new acridone alkaloid, and a new flavone. Structure elucidation and signal assignment were achieved by the extensive use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32d6639a40995459786f2e41000eb1cb
https://doi.org/10.1002/mrc.2548
https://doi.org/10.1002/mrc.2548
Publikováno v:
Journal of Natural Products. 72:1708-1711
The isolation of (Z,Z)-pandanamine (1) and its corresponding isomers (Z,E)-pandanamine (2) and (E,E)-pandanamine (3) from Stichoneuron calcicola of the family Stemonaceae is of outstanding chemosystematic importance. This alkaloid was previously only
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce36301d33bba73fa21df171f8c4e71c
https://doi.org/10.1021/np900294c
https://doi.org/10.1021/np900294c
Autor:
Brigitte Lukaseder, Wolfgang Robien, Harald Greger, Otmar Hofer, Michael Nagl, Christoph Seger, Srunya Vajrodaya, Gerda Lutz-Kutschera, Tina Hehenberger
Publikováno v:
Phytochemistry. 70:1030-1037
Fifteen prenylated or geranylated flavanones and flavanonols were isolated from the leaf extracts of different Glycosmis species collected in Thailand and Malaysia. All structures were elucidated by spectroscopic methods, especially 1D and 2D NMR. Si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d30999069300dfcf26dd82aec29a9045
https://doi.org/10.1016/j.phytochem.2009.05.007
https://doi.org/10.1016/j.phytochem.2009.05.007
Autor:
Otmar Hofer, Srunya Vajrodaya, Harald Greger, Caroline M. Pannell, Klaus Teichmann, Margit Hofer, Johann Schinnerl
Publikováno v:
Phytochemistry. 69:928-938
Six amide-esters and two sulphur-containing bisamides were isolated from the leaves, stem and root bark of Aglaia tenuicaulis together with two bisamides from the leaves of A. spectabilis. Their structures were elucidated by spectroscopic methods. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c3d06022e17f6f8cd68f935962bf17d
https://doi.org/10.1016/j.phytochem.2007.10.015
https://doi.org/10.1016/j.phytochem.2007.10.015
Autor:
Harald Greger, Johann Schinnerl, Srunya Vajrodaya, Otmar Hofer, Brigitte Brem, Paul Pui-Hay But
Publikováno v:
Phytochemistry. 68:1417-1427
Broad-based phytochemical investigations on 31 Stemona species and geographical provenances led to an overview concerning characteristic accumulation trends and the distribution of different Stemona alkaloids. Two major metabolic differences suggeste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f6fde6ac54cdfc4ede026529970aac0
https://doi.org/10.1016/j.phytochem.2007.03.002
https://doi.org/10.1016/j.phytochem.2007.03.002
Autor:
Otmar Hofer, Thomas Pacher, Markus Hartl, Franz Hadacek, Srunya Vajrodaya, Christoph Seger, Harald Greger, Brigitte Brem
Publikováno v:
Phytochemistry. 65:2719-2729
From the roots of various Stemona species four new dehydrotocopherols (chromenols) were isolated and their structures and stereochemistry elucidated by spectroscopic methods. The double bond between C-3 and C-4 proved to be a typical chemical charact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::054287350f57bf1e438b8926f0a99ab1
https://doi.org/10.1016/j.phytochem.2004.08.023
https://doi.org/10.1016/j.phytochem.2004.08.023
Autor:
Otmar Hofer, Thomas Pacher, Doris Engelmeier, Katharina Kostecki, Srunya Vajrodaya, Harald Greger
Publikováno v:
Phytochemistry. 65:99-106
Three new dihydrophenanthrenes, stemanthrenes A-C, along with the new dihydrostilbene stilbostemin G were isolated and identified from the underground parts of Stemona cf. pierrei together with the known pinosylvin, 4'-methylpinosylvin, dihydropinosy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::272f717f522216d162152df804bf69df
https://doi.org/10.1016/j.phytochem.2003.09.015
https://doi.org/10.1016/j.phytochem.2003.09.015
Autor:
Otmar Hofer, Gerda Lutz-Kutschera, Franz Hadacek, Harald Greger, Doris Engelmeier, Michael Nagl, Gerald Wurz
Publikováno v:
Journal of Natural Products. 67:19-25
Seven new naturally occurring 3-butylisocoumarins were isolated and identified from lipophilic extracts of aerial as well as underground organs: corfin (17) and 3'-hydroxycorfin (18) from the roots of Chamaemelum mixtum and (-)-(R)-2'-methoxydihydroa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae31ca8736426d880107f44576841aba
https://doi.org/10.1021/np0301339
https://doi.org/10.1021/np0301339
Publikováno v:
Monatshefte für Chemie/Chemical Monthly. 133:97-100
The bisamide aglairubine was isolated from different Aglaia species. The original structure was revised on the basis of FDMS and 2D-NMR data. Since all isolates were obtained from species belonging to the section Amoora of the genus Aglaia, aglairubi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a6420a8008469f7fd8cd0e6a2e313e0
https://doi.org/10.1007/s007060270010
https://doi.org/10.1007/s007060270010
Publikováno v:
Phytochemistry. 57:57-64
Bioassays with lipophilic crude extracts of four Fijian Aglaia species against Spodoptera littoralis displayed strong insecticidal activity for A. basiphylla and A. gracilis, whereas A. archboldiana and A. vitiensis did not have any significant effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77985f8e99800f71d5d928cf7a724ca0
https://doi.org/10.1016/s0031-9422(00)00471-4
https://doi.org/10.1016/s0031-9422(00)00471-4