Synthetic Scheme for the Preparation of 13C-Labeled 3,4-Didehydro-Retinal, 3-Hydroxyretinal, and 4-Hydroxyretinal up to Uniform 13C-Enrichment
作者:Arjan A. C. van Wijk、Michiel B. van de Weerd、Johan Lugtenburg
DOI:10.1002/ejoc.200390130
日期:2003.3
A modular syntheticscheme has been developed for the synthesis of 13C-labeled naturally occurring visual pigment chromophores; 3,4-didehydroretinal, 3-hydroxyretinal, and 4-hydroxyretinal. These compounds can now be made with > 99% 13C enrichment at any position or combination of positions. We used the common C10+C5+C5 scheme for the synthesis of retinals, and by making variations in the C10 part
been prepared by treatment of the corresponding ethyl safranates with excess allyl lithium followed by alkoxide catalyzed isomerization of the resulting products with β, γ-unsaturated ketonic side chains. Addition of allyltriphenylphosphorane (preferably prepared from allyltriphenylphosphonium chloride) rather than the propenyl isomer to ethyl α-isopropylidene-acetoacetate produced ethyl α-safranate.
Neuartige Kondensationsreaktionen mit Isoxazolen Eine Erweiterung der RITTER-Reaktion
作者:C. H. Eugster、L. Leichner、E. Jenny
DOI:10.1002/hlca.19630460215
日期:——
Es werden Methoden zur Bestimmung von 5-Methylisoxazol neben 3-Methylisoxazol angegeben.
Es werden Methoden zur Bestimmung由5-甲基异iso唑3-甲基异ol唑Angegeben。
Compounds and methods of treating ocular disorders
申请人:CASE WESTERN RESERVE UNIVERSITY
公开号:US10363231B2
公开(公告)日:2019-07-30
A method of treating an ocular disorder in a subject associated with increased all-trans-retinal in an ocular tissue includes administering to the subject a therapeutically effective amount of a primary amine compound of formula (I); and pharmaceutically acceptable salts thereof.