Results 191 to 200 of about 9,505 (220)
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Sesquiterpene lactones from Achillea crithmifolia
Phytochemistry, 1991Abstract The isolation of guaianolides rupicolin-A, rupicolin-B, their acetates and a new germacranolide 1β,10α-epoxy-3β,9β-diacetoxy-11α,13-dihydrocostunolide, identified by means of PS DQF COSY and PS NOESY, from Achillea crithmifolia is reported. A flavonoid jaceidin was also isolated from the same extract.
Milosavljević, Slobodan +4 more
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Sesquiterpene lactones from Laserpitium gallicum
Phytochemistry, 1986The roots of Laserpitium gallicum gave large amounts of the acetylene falcarindiol and four mixtures of sesquiterpene lactone diesters, whose structure was established by spectral data and chemical reactions.
Giovanni Appending +3 more
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The first sesquiterpene lactones esterified with a sesquiterpenic acid
Phytochemistry, 1981Abstract From Hypochoeris glabra two guaianolides esterified with an unusual sesquiterpenic acid were isolated. Proton-catalysed rearrangement of the cyclopropane derivative led to a phenolic acid. The structures were elucidated by high-field 1 H NMR spectroscopy. Further guaianolides were isolated from H. uniflora and Lactuca floridana . These
Wolf-Rainer Abraham +3 more
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Sesquiterpene lactones from Lugoa revoluta
Biochemical Systematics and Ecology, 20010 ...
Jorge Triana +5 more
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Collection of Czechoslovak Chemical Communications, 1991
11,13-Methylene derivatives of sesquiterpene exomethylene-γ-lactones were prepared by reaction of diazomethane and photolysis of the resulting pyrazoline adduct(s). Variable amounts of exomethylene- and ethylidene-γ-lactones were also formed in the photolysis reaction.
G. APPENDINO +3 more
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11,13-Methylene derivatives of sesquiterpene exomethylene-γ-lactones were prepared by reaction of diazomethane and photolysis of the resulting pyrazoline adduct(s). Variable amounts of exomethylene- and ethylidene-γ-lactones were also formed in the photolysis reaction.
G. APPENDINO +3 more
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Sesquiterpene lactones of Eupatorium scabridum
Phytochemistry, 1982Abstract Eupatorium scabridum , a hybrid biotype presumed to arise by hybridization of E. rotundifolium and E. semiserratum furnished anti-tumor sesquiterpene lactones characteristic of the putative parents.
Werner Herz, Palianappan Kulanthaivel
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Sesquiterpene lactones ofFerula olgae
Chemistry of Natural Compounds, 19751. Six sesquiterpene lactones have been isolated fromFerula olgae Regel et Schmalh. Three of them have been identified with talassins A and B and 4-acetoxypruteninone, which have been described previously.
K. S. Rybalko +2 more
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Structure of ratibinolide, a sesquiterpene lactone
Acta Crystallographica Section C Crystal Structure Communications, 1990AbstractChemInform 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.
A. Rojas +3 more
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Chemistry of Sesquiterpene Lactones
2018Sesquiterpene lactones are a class of bioactive plant products that display an array of biological and pharmacological activities such as antimicrobial, cytotoxic, anti-inflammatory, antiviral, antibacterial, and antifungal. A vast amount of sesquiterpene molecular structures has been reported, and the largest numbers of these types of compounds can be
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Sesquiterpene lactones of big sagebrush
Phytochemistry, 1971Abstract Samples of Artemisia tridentata spp. vaseyana, tridentata and wyomingensis were collected from various locations throughout the state of Montana and the sesquiterpene lactone content of their leaves were analyzed by TLC. The major lactones present in each subspecies (I–VI) were isolated and chemically identified.
Fred Shafizadeh +4 more
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