Synthesis of 3,4-Dihydro-2H-1,3-benzoxazines by Condensation of 2-Hydroxyaldehydes and Primary Amines: Application to the Synthesis of Hydroxy-Substituted and Deuterium-Labeled Compounds
作者:R. Andreu、J. C. Ronda
DOI:10.1080/00397910802138629
日期:2008.6.27
Abstract We report the synthesis of several substituted 3,4-dihydro-2H-1,3-benzoxazines by simple ring closure of 2-hydroxybenzylamines with paraformaldehyde. The facile synthesis of the benzylamine precursors from commercially available salicylaldehyde derivatives affords a powerful general synthetic way to prepare a variety of substituted benzoxazines, avoiding the formation of undesirable oligomeric
[EN] COMPOUND FOR TREATING GOUT OR HYPERURICEMIA<br/>[FR] COMPOSÉ POUR LE TRAITEMENT DE LA GOUTTE OU DE L'HYPERURICÉMIE
申请人:ARTHROSI THERAPEUTICS INC
公开号:WO2020232156A1
公开(公告)日:2020-11-19
Described herein is (3,5-dibromo-4-hydroxyphenyl)(6-hydroxy-2-(1-hydroxyethyl)benzofuran-3-yl-4,5,7-d 3 )methanone, or a pharmaceutically acceptable salt or solvate thereof, and methods for treating or preventing gout or hyperuricemia comprising the administration of the compound.
[EN] METHODS FOR TREATING OR PREVENTING CHRONIC KIDNEY DISEASE<br/>[FR] MÉHODES DE TRAITEMENT OU DE PRÉVENTION DE MALADIE RÉNALE CHRONIQUE
申请人:ARTHROSI THERAPEUTICS INC
公开号:WO2021252630A1
公开(公告)日:2021-12-16
Described herein are methods for treating or preventing chronic kidney disease, and other diseases, comprising the administration (3,5-dibromo-4-hydroxyphenyl)(2-(1-hydroxyethyl)benzofuran-3-yl-4,5,6,7-d4)methanone, and solvates thereof.
Structures of transient species in the photochromic reaction of 1′,3′,3′-trimethylspiro[2H-1-benzopyran-2,2′-indoline]: Time-resolved resonance Raman study of isotopically substituted analogues
Time-resolved resonance Raman spectra of seven kinds of isotopically substituted analogues of 1,'3',3'-trimethylspiro[2H-1-benzopyran-2,2'-indoline] in the photomerocyanine form have disclosed that only the vibrations of the cleaved benzopyran part are resonance enhanced significantly in cyclohexane and in acetonitrile solutions with 460-390 nm probe light. Dramatic changes in the resonance Raman spectra of the photomerocyanine on going from non-hydrogen-bond donor solvents to hydrogen-bond donor solvents can be interpreted as being due to changes in the relative contribution of ortho-quinoidal and zwitterionic forms in the resonance hybrid structure of the photomerocyanine: in cyclohexane and in acetonitrile the contribution of the ortho-quinoidal form is substantial, while in methanol the zwitterionic form is stabilized by hydrogen bonding with the solvent and the photomerocyanine takes an almost zwitterionic structure.