Results 341 to 350 of about 92,534 (385)
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Review of the analytical techniques for sesquiterpenes and sesquiterpene lactones
Journal of Chromatography A, 2002In this paper the analytical techniques of about the last 2 decades for sesquiterpenes including their lactones are reviewed. For sesquiterpenes, methods like GC, GC-EI-MS, GC-CI-MS, GC-MS-MS, GC-FT-IR, GC-UV, GC-AES, 13C-NMR, PY-GC-MS, HPLC, HPLC-TSP, SFE, SFC, SFC-UV are available, GC combined with MS is the most widespread.
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Helenalin - A Sesquiterpene Lactone with Multidirectional Activity.
Current Drug Targets, 2019Sesquiterpene lactones, secondary metabolites of plants, present in a large number of species mostly from the Asteracea family, are used in the traditional medicine of many countries for the treatment of various pathological conditions.
Joanna Drogosz, A. Janecka
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SESQUITERPENE PYRIDINE ALKALOIDS
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
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2010
This chapter reviews recent advances in elucidating the identification and biosynthesis of several classes of sesquiterpenes from a variety of plant and microbial systems. The generation of the sesquiterpene skeletons for key linear and cyclic classes of sesquiterpenes, and the subsequent decoration of these scaffolds by hydroxylation/oxidation are ...
Joe Chappell, Robert M. Coates
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This chapter reviews recent advances in elucidating the identification and biosynthesis of several classes of sesquiterpenes from a variety of plant and microbial systems. The generation of the sesquiterpene skeletons for key linear and cyclic classes of sesquiterpenes, and the subsequent decoration of these scaffolds by hydroxylation/oxidation are ...
Joe Chappell, Robert M. Coates
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Hepatotoxicity of monoterpenes and sesquiterpenes
Archives of Toxicology, 2017Public interest in natural therapies has increased significantly over past decades. Herbs and herbal products are extensively consumed worldwide and they are generally considered as safe. However, this may not always be true as many cases of herb-induced liver injury are reported every year.
Tomáš Zárybnický +3 more
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ChemInform Abstract: Sesquiterpene Coumarins and Sesquiterpenes from Ferula sinaica.
ChemInform, 1999AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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African Elephant Sesquiterpenes
Journal of Natural Products, 1999GC-MS analysis of extracts from temporal gland secretions of an African elephant has revealed the presence of several farnesol-related sesquiterpenes. Among these are (E)-2, 3-dihydrofarnesol (3), a bumblebee pheromone not seen before in mammals, and a rare component of a Greek tobacco, drimane-8alpha, 11-diol (4), never observed before in an animal.
Samantha S. McKelvey +6 more
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Tetrahedron Letters, 1959
The structure, previously assigned to zerumbone, has been found to be untenable. The ketone has been shown to be monocyclic containing three ethylenic linkages, and has been further correlated with humulene. Results from ozonolysis, and base-catalysed cleavage allowed the compound to be formulated as 2,6,9,9-tetramethyl-2,6,10-cyclo-undecatrien-1-one.
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The structure, previously assigned to zerumbone, has been found to be untenable. The ketone has been shown to be monocyclic containing three ethylenic linkages, and has been further correlated with humulene. Results from ozonolysis, and base-catalysed cleavage allowed the compound to be formulated as 2,6,9,9-tetramethyl-2,6,10-cyclo-undecatrien-1-one.
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American Journal of Contact Dermatitis, 1996
Sesquiterpene lactones are a large, diverse group of chemicals found in several plant families that cause allergic contact dermatitis. The biological, botanical, allergenic, and structural significance of sesquiterpene lactones is explored as well as the clinical characteristics of cutaneous reactions.
Erin M. Warshaw, Kathryn A. Zug
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Sesquiterpene lactones are a large, diverse group of chemicals found in several plant families that cause allergic contact dermatitis. The biological, botanical, allergenic, and structural significance of sesquiterpene lactones is explored as well as the clinical characteristics of cutaneous reactions.
Erin M. Warshaw, Kathryn A. Zug
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Elemanolide sesquiterpenes and eudesmane sesquiterpene glycosides from Centaurea hierapolitana
Phytochemistry, 2007Two elemanolide sesquiterpenes and two eudesmane-type sesquiterpene glycosides named hierapolitanins A-D, were isolated, together with five known compounds, two flavones; hispidulin and jaceosidin, a flavon-C-glycoside, shaftoside, a flavonol glycoside, kaempferol-3-O-rutinoside and a neolignan, dehydrodiconiferyl alcohol from the aerial parts of ...
Bedir, Erdal +4 more
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