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
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.
The all-E isomer of (4,4'-C-13(2))astaxanthin (1a) has been prepared by total synthesis starting from commercially available 99% C-13 enriched acetonitrile. The labelled astaxanthin was obtained in high purity and with high isotope incorporation. For this synthesis, the C-15 + C-10 + C-15 strategy was used. The central C-10-synthon, 2,7-dimethylocta-2,4,6-triene-1,8-dial (3), was coupled with C-13-enriched C-15-phosphonium salt 2a. The new synthetic scheme for the preparation of the C-15-phosphonium salt is discussed in this paper; the same scheme can be used to label all positions and combinations of positions of the C-15-phosphonium salt.
Kutney, James P.; Gunning, Philip J.; Clewley, Robin G., Canadian Journal of Chemistry, 1992, vol. 70, # 7, p. 2094 - 2114
作者:Kutney, James P.、Gunning, Philip J.、Clewley, Robin G.、Somerville, John、Rettig, Steven J.