Results 161 to 170 of about 3,514 (186)

An efficient synthesis of furanocoumarins

Tetrahedron, 1992
Abstract An efficient synthesis of linear and angular furanocoumarins has been carried out starting from iodoumbelliferone derivatives. First synthesis of 6-iodoumbelliferone is described. The average yields are higher than those reported before.
Eva Zubía, Francisco Rodríguez Luis, Guillermo M. Massanet, Isidro G. Collado   +3 more
openaire   +1 more source

Synthesis of linear diphenyl furanocoumarins

Proceedings of the Indian Academy of Sciences - Section A, 1976
The elegant and direct synthesis of linear 2′-3′-diphenyl furanocoumarins is recorded for the first time by submitting the desyl ether of hydroxycoumarins to the action of mild 0·1 N KOH. This reagent brings about aldol condensation followed by cyclisation and dehydration in the presence of acids as proposed by Macleod and Worth to give the desired ...
M. Kanakalingeswara Rao, K. Krishna Pillai, S. Rajagopal   +2 more
openaire   +1 more source

Furanocoumarins: History of Research, Diversity, Synthesis, Physiological Role in the Plant, and Medical Application

Russian journal of plant physiology, 2023
V. Y. Shtratnikova
semanticscholar   +1 more source

Biosynthesis of furanocoumarins in parsnips

Phytochemistry, 1970
Abstract Labelling experiments have shown that umbelliferone, and to a lesser degree p -coumaric acid, are precursors of bergapten, imperatorin, isopimpinellin and xanthotoxin in Pastinaca sativa L. C-2 and C-5 of mevalonate, which has been proposed as a precursor of two furan ring carbons and of dimethylallyl substituents, were both incorporated ...
openaire   +1 more source

Collective Synthesis of Furanocoumarin Natural Products Through a Radical‐mediated Construction of Furanocoumarin Skeletons

Asian Journal of Organic Chemistry
AbstractFuranocoumarins are attractive targets in the synthetic organic and medicinal chemistry field because of their structural diversity and interesting biological properties. Herein, we describe the synthesis of furanocoumarin natural products from common furanocoumarin skeletons.
Yuko Kotaka, Masaya Nakajima, Tetsuhiro Nemoto   +2 more
openaire   +1 more source

A furanocoumarin from Dorstenia contrajerva

Phytochemistry, 1991
Abstract A new furanocoumarin, 5-[3,4-epoxy-2,7-dimethyl-6,7-octenoyl]psoralen was isolated and identified from Dorstenia contrajerva .
Lee A. Swain, J.M.E. Quirke, Stephen A. Winkle, Kelsey R. Downum   +3 more
openaire   +1 more source

Leaf furanocoumarins of Heracleum lanatum

Phytochemistry, 1970
Abstract Sphondin is the principal furanocoumarin of Heracleum lanatum leaves; pimpinellin, isopimpinellin, bergapten, xanthotoxin, isobergapten, psoralen and angelicin were also identified. At least eleven other furanocoumarins were present.
openaire   +2 more sources

Phototoxic Furanocoumarins

Planta Medica, 1986
L, Brimer, E A, Knudsen
openaire   +2 more sources

Furanocoumarins

2008
E. S. Krafsur, R. D. Moon, R. Albajes, O. Alomar, Elisabetta Chiappini, John Huber, John L. Capinera, John B. Heppner, John B. Heppner, John B. Heppner, John B. Heppner, Norbert H. Haunerland, George Hangay, Hannah Nadel, Carlos Caceres, Kevin D. Floate, Gary A. P. Gibson, James E. Lloyd, Helen Ghiradella, John T. Schmidt, John B. Heppner, Malcolm Edmunds, Juliana J. Soroka, John B. Heppner, Cyrus Abivardi, Kathryn A. Barbara, John L. Capinera, Stan K. Gangwere, Luca Fornasari, Robert D. Hall, Ashok K. Raina, Marjorie A. Hoy, Marjorie A. Hoy, Whitney Cranshaw, John B. Heppner, George Hangay, George Hangay, George Hangay, Gary J. Steck, Yousif Aldryhim, John B. Heppner, Donald C. Steinkraus, Peter H. Kerr, John B. Heppner, Cyrus Abivardi   +44 more
openaire   +2 more sources

The Role of Dihydropsoralen in Furanocoumarin Metabolism

Canadian Journal of Biochemistry, 1973
Trapping experiments with [2-14C]umbelliferone and 2′,3′-dihydropsoralen (DHP) administered to Ruta graveolens yielded negative results over metabolic periods of 5–24 h. Specific radioactivities of psoralen were comparable to those previously observed, but those of DHP were about two orders of magnitude lower.
openaire   +2 more sources