[EN] SUBSTITUTED FUROCHROMENE COMPOUNDS OF ANTIINFLAMMATORY ACTION<br/>[FR] COMPOSES DE FUROCHROMENE SUBSTITUES A ACTION ANTI-INFLAMMATOIRE
申请人:PLIVA ISTRAZIVACKI INST D O O
公开号:WO2005010006A1
公开(公告)日:2005-02-03
The present invention relates to novel compounds of the formula (I) including all stereoisomers and tautomers, to the pharmaceutically acceptable salts and solvates thereof, to the processes and reactive intermediates for their preparation and to their use in the prophylaxis and treatment of asthma and other inflammatory diseases and/or conditions in humans.
Pechmann reaction of 4-hydroxycoumarins and thiocoumarins with cyclohexanone and ethyl cyclopentanone-2-carboxylates
作者:J. R. Merchant、N. M. Koshti、K. M. Bakre
DOI:10.1002/jhet.5570180837
日期:1981.12
The Pechmann reaction of 4-hydroxycoumarins with cyclohexanone and ethyl cyclopentanone-2-carboxylates affords 1,2,3,4-tetrahydro[2]benzopyrano[4,3-c][1]benzopyran-5,12-diones and cyclopenta[3′,4′]pyrano-[3,2-c][1]benzopyran-4,11-diones. Dehydrogenation of the former yields [2]benzopyrano[4,3-c][1]benzopyran-5,12-diones. Alkaline hydrolysis of a typical compound Va affords 2-hydroxy-2′-carboxydeoxybenzoin
4-羟基香豆素与环己酮和乙基环戊酮-2-羧酸酯的Pechmann反应得到1,2,3,4-四氢[2]苯并吡喃并[4,3- c ] [1]苯并吡喃-5,12-二酮和环戊并[ 3′,4′ ]吡喃基- [3,2- c ] [1]苯并吡喃-4,11-二酮。前者的脱氢产生[2]苯并吡喃并[4,3-c] [1]苯并吡喃-5,12-二酮。典型化合物Va的碱性水解得到2-羟基-2'-羧基脱氧安息香,其在与乙酸酐一起沸腾后得到异香豆素衍生物。
Thiophenol-catalyzed Claisen rearrangement and radical cyclization: formation of furo- and pyrano-coumarin derivatives
作者:K.C. Majumdar、P. Debnath、P.K. Maji
DOI:10.1016/j.tetlet.2007.05.133
日期:2007.7
synthesis of dihydrofurocoumarins and dihydropyranocoumarins in excellent yields from 4-prop-2-ynyloxy coumarin via a thiol mediated radical reaction is described. Alkenyl radicals are generated from easily available terminal alkynes and thiophenol. Thiophenol catalyzed the Claisenrearrangement of the 4-prop-2-ynyloxycoumarin ethers.
<i>N</i>-Iodosuccinimide: An Efficient Reagent for Regioselective Heterocyclization of 3-Allyl-4-hydroxy[1]benzopyran-2-ones
作者:K. C. Majumdar、P. K. Basu、B. Roy
DOI:10.1081/scc-120024750
日期:2003.10
Abstract Thermal Claisen rearrangement of 4-allyloxy[1]benzopyran-2-ones in refluxing chlorobenzene gave 3-allyl-4-hydroxy[1]benzopyran-2-ones in 82–90% yield. A number of 3-iodopyrano[3,2-c][1]benzopyran-5(2H)-ones were synthesized in 80–92% yield by the regioselective heterocyclization of 3-allyl-4-hydroxy[1]benzopyran-2-ones with N-iodosuccinimide in acetonitrile at 0–5°C.
Substituted furochromene compounds of antiinflammatory action
申请人:Mercep Mladen
公开号:US20060148890A1
公开(公告)日:2006-07-06
The present invention relates to novel compounds of the formula (I)
including all stereoisomers and tautomers thereof, to the pharmaceutically acceptable salts and solvates thereof, to the processes and reactive intermediates for their preparation and to their use in the prophylaxis and treatment of asthma and other inflammatory diesases and/or conditions in humans.