Results 151 to 160 of about 1,627 (196)

Synthesis of new condensed naphthoquinone, pyran and pyrimidine furancarboxylates. [PDF]

Beilstein J Org Chem
Gomonov KA, Pelipko VV, Litvinov IA, Pilipenko IA, Stepanova AM, Lapatin NA, Baichurin RI, Makarenko SV.   +7 more
europepmc   +1 more source

A rare case of porphyria cutanea tarda in a patient with a homozygous hereditary hemochromatosis gene H63D mutation in the setting of hereditary hemochromatosis. [PDF]

JAAD Case Rep
Banta J, Collins J, Kobayashi T.
europepmc   +1 more source

Imprecise Coding in Allergic Contact Dermatitis: A Register-Study From Northern Finland Between Years 1999 and 2022. [PDF]

Contact Dermatitis
Kämäräinen J, Loukkola T, Mikkola J, Sivonen M, Jokelainen J, Kiviniemi E, Huilaja L, Sinikumpu SP.   +7 more
europepmc   +1 more source

Phytophotodermatitis Due to Fig Tree Sap Activated by Ultraviolet Light: A Case Report. [PDF]

Cureus
Vilela M, Fernandes S, Barroso AS, Carvoeiro A.   +3 more
europepmc   +1 more source

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A chiral furocoumarin

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, D R, Billodeaux, S F, Watkins, F R, Fronczek   +3 more
openaire   +2 more sources

Photoreactions of furocoumarins with biomolecules

Journal of Photochemistry and Photobiology B: Biology, 1990
Recent 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.
J, Cadet, P, Vigny, W R, Midden
openaire   +2 more sources

SINGLET OXYGEN GENERATION BY FUROCOUMARIN TRIPLET STATES—I. LINEAR FUROCOUMARINS (PSORALENS)

Photochemistry and Photobiology, 1986
Abstract— 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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Furocoumarins ofKomarovia anisospermum

Chemistry of Natural Compounds, 1976
Three 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, Yu. E. Sklyar, M. E. Perel'son, M. G. Pimenov   +3 more
openaire   +1 more source

Dietary exposure to furocoumarins

Regulatory Toxicology and Pharmacology, 1991
Natural 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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FLUORESCENCE LIFETIMES OF ANGULAR FUROCOUMARINS

Photochemistry and Photobiology, 1987
AbstractProperties 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, CUBEDDU, RINALDO, Knox CN, Truscott TG   +3 more
openaire   +3 more sources