Article: A Facile and Efficient Method for the Synthesis of Labeled and Unlabeled Very Long Chain Polyunsaturated Fatty Acids
The journal of the American Oil Chemists' Society. 2021 May, v. 98, no. 5
2021
Abstract: Several methods are available for elongation of fatty acid acyl chains. The present paper describes adaptation to the fatty acid field of a previously published protocol for manganese‐based Wurtz type coupling of alkyl bromides. 22‐Bromo‐3(Z),6(Z),9(Z), ... ...
Abstract | Several methods are available for elongation of fatty acid acyl chains. The present paper describes adaptation to the fatty acid field of a previously published protocol for manganese‐based Wurtz type coupling of alkyl bromides. 22‐Bromo‐3(Z),6(Z),9(Z),12(Z),15(Z),18(Z)‐docosahexaene, easily prepared from 4(Z),7(Z),10(Z),13(Z),16(Z),19(Z)‐docosahexaenoic acid, was coupled to homologous ω‐bromoesters by stirring for 4 hours at 40°C in the presence of manganese powder, a nickel catalyst and terpyridine. This afforded in yields of 70–75% a series of ω3‐hexaenoates of chain lengths of 32–40 carbons. The corresponding fatty acids of >98% purity were obtained following saponification and final purification. By using methyl [2,2,3,3,4,4‐²H₆]10‐bromodecanoate as coupling partner it was possible to prepare a very long chain fatty acid in isotopically labeled form, i.e., [2,2,3,3,4,4‐²H₆]14(Z),17(Z),20(Z),23(Z),26(Z),29(Z)‐dotriacontahexaenoic acid. Also prepared were the monounsaturated long chain fatty acids 15(Z)‐octadecenoic acid and 15(Z)‐tetracosenoic acid. Very long chain fatty acids have been isolated from retina and other tissues and are of biological relevance. The methodology described will assist in further analytical and biological studies in this field. |
---|---|
Keywords | catalysts ; isotope labeling ; manganese ; nickel ; oils ; retina ; saponification |
Language | English |
Dates of publication | 2021-05 |
Size | p. 489-494. |
Publishing place | John Wiley & Sons, Inc. |
Document type | Article |
Note | JOURNAL ARTICLE |
ZDB-ID | 240684-6 |
ISSN | 1558-9331 ; 0003-021X |
ISSN (online) | 1558-9331 |
ISSN | 0003-021X |
DOI | 10.1002/aocs.12484 |
Database | NAL-Catalogue (AGRICOLA) |
More links
Kategorien
In stock of ZB MED Bonn / Germany
Z 4481: Show issues |
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.
Inter-library loan at ZB MED
Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.