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13 rezultatima
Analgesic and sedative activities of lactucin and some lactucin-like guaianolides in mice.
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Lactucin (1) and its derivatives lactucopicrin (2) and 11beta,13-dihydrolactucin (3), which are characteristic bitter sesquiterpene lactones of Lactuca virosa and Cichorium intybus, were evaluated for analgesic and sedative properties in mice. The compounds showed analgesic effects at doses of 15
11β,13-Dihydro-lactucin-8-O-acetate hemihydrate.
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THE TITLE STRUCTURE (SYSTEMATIC NAME: 9-hydroxy-methyl-3,6-di-methyl-3-methyl-ene-2,7-dioxo-3,3a,4,5,9a,9b-hexa-hydro-azu-leno[4,5-b]furan-4-yl acetate hemihydrate), C(17)H(20)O(6)·0.5H(2)O, from Lactuca floridana, has two independent sesquiterpene lactone mol-ecules in the asymmetric unit. Both
Metabolite profiling of sesquiterpene lactones from Lactuca species. Major latex components are novel oxalate and sulfate conjugates of lactucin and its derivatives.
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Wounding leaves or stems of Lactuca species releases a milky latex onto the plant surface. We have examined the constituents of latex from Lactuca sativa (lettuce) cv. Diana. The major components were shown to be novel 15-oxalyl and 8-sulfate conjugates of the guaianolide sesquiterpene lactones,
[Research on the preparation of lactucin and lactucopicrin from Lactuca virosa plants. 15. On the enzymatic and non-enzymatic oxidation of therapeutically active plant substances].
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Lignans and sesquiterpenoids from Lactuca sibirica.
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From aerial parts of Lactuca sibirica, two new and one known furofuran lignans were isolated, together with four known lactucin-like guaianolides. On the basis of spectral data, the new lignans were characterized as acylated glucopyranosides of 4alpha, 8alpha-dihydroxypinoresinol.
Guaianolides from Lactuca saligna.
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The phytochemical investigation of the aerial parts of LACTUCA SALIGNA L. revealed the presence of lactucin, lactucopicrin, and a new guaianolide named 11beta,13-dihydrolactucopicrin. The structural configuration was established through spectral data.
Triterpenoids and Sesquiterpenes from Mulgedium tataricum.
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The chemical investigation of Mulgedium tataricum afforded six new compounds which were identified as lanost-9(11),23 Z(24)-diene-3beta,25-diol (1), lanost-9(11),25-diene-3beta,24beta-diol (2), ursane-20-ene-3beta,22alpha-diol (3), 4 E,10
Cloning and expression of sesquiterpene synthase genes from lettuce (Lactuca sativa L.).
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Sesquiterpenoid lactones (SLs) from lettuce (Lactuca sativa L.) include constitutive components of latex such as lactucin and the induced phytoalexin, lettucenin A. A redundant primer strategy was used to recover two full length cDNA clones (LTC1 and LTC2) encoding sesquiterpene synthases from a
Sedative Effects of Latexes Obtained from Some Lactuca L. Species Growing in Turkey.
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Lactuca L. species belong to the Asteraceae family and these plants are traditionally used for therapeutic purposes around the world. The dried milky latex of L. serriola is known as "lettuce oil" and is used as a sedative in Turkey. This study aimed to evaluate the sedative
Reversed-phase ultra-high-performance liquid chromatography coupled to electrospray ionization-quadrupole-time-of-flight mass spectrometry as a powerful tool for metabolic profiling of vegetables: Lactuca sativa as an example of its application.
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Lettuce (Lactuca sativa), a leafy vegetal widely consumed worldwide, fresh cut or minimally processed, constitutes a major dietary source of natural antioxidants and bioactive compounds. In this study, reversed-phase ultra-high-performance liquid chromatography (RP-UHPLC) coupled to electrospray
Effectiveness of the Sleep Enhancement by Green Romaine Lettuce (Lactuca sativa) in a Rodent Model.
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This study was conducted to investigate the effects of the extracts of green romaine lettuce (GRE) on sleep enhancement. GRE contains 1071.7 and 199.2 µg/g of extracts of lactucin and lactucopicrin, respectively, known as sleep enhancement substances. When 100 mg/kg of GRE was administered orally,
Identification and quantification of selected metabolites in differently pigmented leaves of lettuce (Lactuca sativa L.) cultivars harvested at mature and bolting stages.
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Sleep-inducing effect of lettuce (Lactuca sativa) varieties on pentobarbital-induced sleep.
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The objective of this study was to investigate the sleep-inducing effect of lettuce varieties and the extracts derived from romaine lettuce on pentobarbital-induced sleep. Romaine lettuce had a higher lactucin content (red romaine: 361.50 µg/g of extract, green romaine: 1071.67 µg/g of extract)
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