共查询到20条相似文献,搜索用时 0 毫秒
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Giuliano Delle Monache Franco Delle Monache Josè Becerra Mario Silva Francesco Menichini 《Phytochemistry》1984,23(9):1947-1950
The known 10-acetoxy-8,9-epoxythymolisobutyrate and the new 8,9-dihydroxy-10-acetoxythymolisobutyrate and 8,9,10-trihydroxythymol have been isolated from the thallus of Eupatorium glechonophyllum. The acetonide of the last compound was also obtained. The possibility that the new compounds are artefacts is discussed. 相似文献
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Ferdinand Bohlmann Jasmin Jakupovic Angelika Schuster Robert M. King Harold Robinson 《Phytochemistry》1982,21(9):2317-2327
The reinvestigation of Ichthyothere terminalis afforded, in addition to known compounds, two new melampolides, a hydroxy borneol, a pinene derivati 相似文献
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An investigation of Senecio lydenburgensis afforded eight new cacalol and cacalohastin derivatives. Their structures were deduced from the molecular formulae and 1H NMR spectra. 相似文献
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Ferdinand Bohlmann Cornelius Scheidges Robert M. King Harold Robinson 《Phytochemistry》1984,23(5):1190-1192
A re-investigation of the aerial parts of Koanophyllon conglobatum afforded six new diterpenes, five labdanes and one seco-labdane, as well as two hydroperoxides which may be artefacts. 相似文献
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Ferdinand Bohlmann Jasmin Jakupovic Robert M. King Harold Robinson 《Phytochemistry》1982,21(5):1103-1107
The aerial parts of Madia sativa afforded, in addition to known compounds, two labdane derivatives whose structures were elucidated by spectroscopic methods. The absolute configuration was determined by chemical transformations. From the roots a new tremetone derivative was isolated. The constituents indicated close relationships of Madia to Hemizonia. 相似文献
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from Leucanthemopsis pallida subsp.flaveo three new pyrogallol derivatives were isolated: 4-hydroxy-5-propionyl-1,3-di-O-methylpyrogallol, 4-hydroxy-5-propionyl-1,3-di-O-methyl-2-O-isopentenylpyrogallol and 5-(1′-isovalerianoyloxy)-ethyl-1,3-di-O-methyl-2-O-isopentenylpyrogallol. 相似文献
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From roots of Leucanthemopsis pulverulenta, two new phloroglucinol derivatives and (+) sesamin, have been isolated. The new compounds were identified as 1 - acetyl - 4 - isopentenyl - 6 - methylphloroglucinol and 1 - acetyl - 3 - hydroxy - 2,6 - dimethyl - 4 - isopentenylphloroglucinol. 相似文献
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Ferdinand Bohlmann Christian Wolfrum Jasmin Jakupovic Robert M. King Harold Robinson 《Phytochemistry》1985,24(5):1101-1103
A reinvestigation of the aerial parts of Heterotheca latifolia afforded four new cadinene derivatives. 相似文献
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Ferdinand Bohlmann Wolfgang Kramp Rajinder K. Gupta Robert M. King Harold Robinson 《Phytochemistry》1981,20(10):2375-2378
The investigation of three species of the new genus Kaunia afforded four new guaianolides and four thymol derivatives. The structures were elucidated by spectroscopic methods. The chemotaxonomic situation is discussed briefly. 相似文献
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The roots of Callilepis salicifolia afforded in addition to known compounds four derivatives of isocomene, one dihydroxysilphinene isovalerate, two 相似文献
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Ferdinand Bohlmann Michael Wallmeyer Jasmin Jakupovic Thomas Gerke Robert M. King Harold Robinson 《Phytochemistry》1985,24(3):505-509
The investigation of five Blumea species afforded, in addition to known compounds, several cuauthemone derivatives, most of them being 7,11-epoxides, some thymol derivatives, an eremophilane epoxide and a himachalane diol. From Pterocaulon virgatum a further himachalane derivative was isolated. The structures were elucidated by spectroscopic methods and in part by partial synthesis. 相似文献
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From the hexane extract of Artemisia campestris subsp. glutinosa, sakuranetin, dihydroquercetin-7,3′-dimethyl ether and three acetophenone derivatives identified as 3-[4-acetoxyisopent-2(Z)-enyl]-4-hydroxyacetophenone, 3-[4-acetoxyisopent-2(E)-enyl]-4-hydroxyacetophenone and 3-(3-acetoxymethyl-2-hydroxybut-3-enyl)-4-hydroxyacetophenone, have been isolated. 相似文献
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Five known thymol derivatives were isolated from roots of Arnica montana transformed with Agrobacterium rhizogenes LBA 9402. The compounds were characterized by spectral methods. The pattern of thymol derivatives in light-grown hairy roots was slightly different from that in dark-grown ones. This is the first report on the presence of thymol derivatives in hairy roots of the plant. 相似文献
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Ferdinand Bohlmann Maniruddin Ahmed Jasmin Jakupovic Robert M. King Harold Robinson 《Phytochemistry》1982,21(3):691-694
An investigation of Brickellia diffusa afforded three new dehydronerolidol derivatives and five new labdane derivatives, all highly oxygenated. The structures were elucidated by spectroscopic methods and a few chemical transformations. The compounds isolated showed close relationships to those isolated from Brickellia sp. 相似文献
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Ferdinand Bohlmann Maringanti Bapuji Robert M. King Harold Robinson 《Phytochemistry》1982,21(4):939-941
From the new monotypic genus Goyazianthus several kolavenol derivatives were isolated. Their structures were elucidated by spectroscopic methods. 相似文献