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Méthodes d\u27analyse et toxicité de quelques substances chimiques entrant dans la composition de produits cosmétiques [PDF]
Maillard, Aline
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Photoreactions of furocoumarins with biomolecules
Journal of Photochemistry and Photobiology B: Biology, 1990Recent aspects of the photoreactions of linear and angular furocoumarins with DNA and related compounds, including [2 + 2] cycloaddition to pyrimidine bases, covalent attachment to the osidic moiety of adenine nucleosides and photodynamic effects, are surveyed.
Jean Cadet, W Robert Midden
exaly +3 more sources
Minor furocoumarins of Murraya koenigii
Fìtoterapìâ, 2000Xanthotoxin, isobyakangelicol, phellopterin, gosferol, neobyakangelicol, byakangelicol, byakangelicin and isogosferol are reported as minor furocoumarins of Murraya koenigii seeds.
A C, Adebajo, J, Reisch
exaly +3 more sources
Acta Crystallographica Section C Crystal Structure Communications, 2000
The furocoumarin 1,2-dihydro-2-(1,2-dihydroxyprop-2-yl)-8H-furo[2,3-h]benzopyran-8-one crystallizes from methanol-water as the monohydrate C(14)H(14)O(5).H(2)O. Both chiral centers have the S configuration. Both OH groups and both H atoms of the water molecule form intermolecular hydrogen bonds with O.O distances in the range 2.7686 (18)-2.8717 (18) A.
F H, Billiot +3 more
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The furocoumarin 1,2-dihydro-2-(1,2-dihydroxyprop-2-yl)-8H-furo[2,3-h]benzopyran-8-one crystallizes from methanol-water as the monohydrate C(14)H(14)O(5).H(2)O. Both chiral centers have the S configuration. Both OH groups and both H atoms of the water molecule form intermolecular hydrogen bonds with O.O distances in the range 2.7686 (18)-2.8717 (18) A.
F H, Billiot +3 more
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FLUORESCENCE LIFETIMES OF ANGULAR FUROCOUMARINS
Photochemistry and Photobiology, 1987AbstractProperties of singlet states of a range of non‐substituted and aceto‐substituted angular furocoumarins as investigated by the technique of time‐resolved fluorescence are reported. In the three solvents studied, water, ethanol and benzene, a variety of 1, 2 or 3 fluorescence lifetime components were found and resolved, the importance of which ...
Andreoni A +3 more
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Dietary exposure to furocoumarins
Regulatory Toxicology and Pharmacology, 1991Natural furocoumarins, some of which are carcinogenic, are widespread components of the diet which are frequently consumed. Because of the paucity of samples, the wide scatter of analytical values, and other limitations in the data, only broad conclusions can be drawn.
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SINGLET OXYGEN GENERATION BY FUROCOUMARIN TRIPLET STATES—I. LINEAR FUROCOUMARINS (PSORALENS)
Photochemistry and Photobiology, 1986Abstract— Triplet extinction coefficients and hence singlet → triplet intersystem crossing quantum yields have been measured in benzene for a number of linear furocoumarins including pseudopsoralen, 5, 8‐dimethoxypsoralen, 4, 5′, 8‐trimethylpsoralen and 3‐carbethoxypseudopsoralen.
C N, Knox, E J, Land, T G, Truscott
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The fungitoxicities of plant furocoumarins
Annals of Applied Biology, 1966SUMMARYA mixture of the furocoumarins pimpinellin, isopimpinellin, isobergapten and sphondin isolated from Heracleum sphondylium root was toxic to Gloeosporium limetticola, Botryis cinerea, Sclerotinia fructigena and Stereum purpureum at 200 p.p.m. or less in nutrient medium.
J. T. MARTIN +2 more
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Furocoumarins ofKomarovia anisospermum
Chemistry of Natural Compounds, 1976Three furocoumarins have been isolated from the roots ofKomarovia anisospermum Korov.: isoimperatorin, phellopterin, and 8-geranyloxy-5-methoxypsoralen. This is the first time that the last-mentioned of these substances has been isolated in the pure state.
A. I. Sokolova +3 more
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1982
The photobiology of fucoroumarins has been covered by a number of reviews (1–4). In recent years we observed a rapid evolution in the knowledge on naturally occurring or synthetic furocoumarins which in the presence of near ultraviolet light or UVA, i.e. radia tion in the range of 320 to 380 nm, exhibit photosensitizing properties in various biological
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The photobiology of fucoroumarins has been covered by a number of reviews (1–4). In recent years we observed a rapid evolution in the knowledge on naturally occurring or synthetic furocoumarins which in the presence of near ultraviolet light or UVA, i.e. radia tion in the range of 320 to 380 nm, exhibit photosensitizing properties in various biological
openaire +1 more source