Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis
Ceramides are lipids from the sphingolipide class derived from the N-acylation of a sphingoid base from a fatty acid. These lipids and their analogs are compounds of interest used as active components in pharmaceutical and cosmetic industries. Among biocatalysts able to synthesize this type of lipid...
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ftunivnantes:oai:HAL:tel-00823900v1 2023-05-15T13:49:56+02:00 Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis Etude de l'acylation sélective de composés multifonctionnels par voie enzymatique : Application à la synthèse de pseudo-céramides Le Joubioux, Florian LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université de La Rochelle Thierry Maugard 2012-04-20 https://theses.hal.science/tel-00823900 https://theses.hal.science/tel-00823900/document https://theses.hal.science/tel-00823900/file/2012_-_Le_-_Joubioux29850.pdf fr fre HAL CCSD NNT: 2012LAROS363 tel-00823900 https://theses.hal.science/tel-00823900 https://theses.hal.science/tel-00823900/document https://theses.hal.science/tel-00823900/file/2012_-_Le_-_Joubioux29850.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-00823900 Sciences agricoles. Université de La Rochelle, 2012. Français. ⟨NNT : 2012LAROS363⟩ Biocatalysis O-acylation Amino-alcohol Lipase B Candida antarctica Organic solvent Ionic liquid Selectivity Biocatalyse Céramide N-acylation Amino-alcool Solvant organique Liquide ionique Sélectivité [SDV.SA]Life Sciences [q-bio]/Agricultural sciences info:eu-repo/semantics/doctoralThesis Theses 2012 ftunivnantes 2023-03-07T23:59:52Z Ceramides are lipids from the sphingolipide class derived from the N-acylation of a sphingoid base from a fatty acid. These lipids and their analogs are compounds of interest used as active components in pharmaceutical and cosmetic industries. Among biocatalysts able to synthesize this type of lipids, Candida antarctica lipase B appears to be the most appropriate enzyme for the production of "pseudo-ceramides" derived from amino-polyols. In this context, we have studied the acylation of amino-alcohol-like compounds catalyzed by Candida antarctica lipase B, keeping inmind a fundamental approach to expand the current knowledge on this subject. The first part of our work aimed to determine the reaction mechanisms and the enantio selectivity exhibited by Candida antarctica lipase B during O-acylation and N-acylation reactions, by conducting a kinetic study of mono functional compound acylation. In the following parts of our work, we performed a structurere activity study of the acyl acceptor substrate and evaluated the effect of the solvent used (organic solvent or ionic liquid) to determine the key factors influencing the chemo selectivity and the regio selectivity of the Candida antarctica lipase B-catalyzed acylation of polyfunctional amino alcohol compounds. Finally, starting from the knowledge acquired in the previous parts, we have developed and optimized an enzymatic process of “pseudo-ceramide” (O,N-diacylaminopropanediol) synthesis performed in a continuous packed-bed reactor. Les céramides sont des lipides de la classe des sphingolipides issus de la N-acylation d’une base sphingoide par un acide gras. Ces lipides et leurs analogues suscitent un grand intérêt comme composants actifs dans les industries pharmaceutique et cosmétique. Parmi les biocatalyseurs capables de réaliser la synthèse de ce type de lipide, la lipase B de Candida antarctica semble être l’enzyme la plus adaptée à la production de « pseudo-céramides » à partir d’amino-polyols. Dans ce contexte, nous avons abordé l’étude de l’acylation de ... Doctoral or Postdoctoral Thesis Antarc* Antarctica Université de Nantes: HAL-UNIV-NANTES |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
French |
topic |
Biocatalysis O-acylation Amino-alcohol Lipase B Candida antarctica Organic solvent Ionic liquid Selectivity Biocatalyse Céramide N-acylation Amino-alcool Solvant organique Liquide ionique Sélectivité [SDV.SA]Life Sciences [q-bio]/Agricultural sciences |
spellingShingle |
Biocatalysis O-acylation Amino-alcohol Lipase B Candida antarctica Organic solvent Ionic liquid Selectivity Biocatalyse Céramide N-acylation Amino-alcool Solvant organique Liquide ionique Sélectivité [SDV.SA]Life Sciences [q-bio]/Agricultural sciences Le Joubioux, Florian Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis |
topic_facet |
Biocatalysis O-acylation Amino-alcohol Lipase B Candida antarctica Organic solvent Ionic liquid Selectivity Biocatalyse Céramide N-acylation Amino-alcool Solvant organique Liquide ionique Sélectivité [SDV.SA]Life Sciences [q-bio]/Agricultural sciences |
description |
Ceramides are lipids from the sphingolipide class derived from the N-acylation of a sphingoid base from a fatty acid. These lipids and their analogs are compounds of interest used as active components in pharmaceutical and cosmetic industries. Among biocatalysts able to synthesize this type of lipids, Candida antarctica lipase B appears to be the most appropriate enzyme for the production of "pseudo-ceramides" derived from amino-polyols. In this context, we have studied the acylation of amino-alcohol-like compounds catalyzed by Candida antarctica lipase B, keeping inmind a fundamental approach to expand the current knowledge on this subject. The first part of our work aimed to determine the reaction mechanisms and the enantio selectivity exhibited by Candida antarctica lipase B during O-acylation and N-acylation reactions, by conducting a kinetic study of mono functional compound acylation. In the following parts of our work, we performed a structurere activity study of the acyl acceptor substrate and evaluated the effect of the solvent used (organic solvent or ionic liquid) to determine the key factors influencing the chemo selectivity and the regio selectivity of the Candida antarctica lipase B-catalyzed acylation of polyfunctional amino alcohol compounds. Finally, starting from the knowledge acquired in the previous parts, we have developed and optimized an enzymatic process of “pseudo-ceramide” (O,N-diacylaminopropanediol) synthesis performed in a continuous packed-bed reactor. Les céramides sont des lipides de la classe des sphingolipides issus de la N-acylation d’une base sphingoide par un acide gras. Ces lipides et leurs analogues suscitent un grand intérêt comme composants actifs dans les industries pharmaceutique et cosmétique. Parmi les biocatalyseurs capables de réaliser la synthèse de ce type de lipide, la lipase B de Candida antarctica semble être l’enzyme la plus adaptée à la production de « pseudo-céramides » à partir d’amino-polyols. Dans ce contexte, nous avons abordé l’étude de l’acylation de ... |
author2 |
LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université de La Rochelle Thierry Maugard |
format |
Doctoral or Postdoctoral Thesis |
author |
Le Joubioux, Florian |
author_facet |
Le Joubioux, Florian |
author_sort |
Le Joubioux, Florian |
title |
Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis |
title_short |
Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis |
title_full |
Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis |
title_fullStr |
Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis |
title_full_unstemmed |
Study of the selective enzymatic acylation of multifunctional compounds : Application to pseudo-ceramide synthesis |
title_sort |
study of the selective enzymatic acylation of multifunctional compounds : application to pseudo-ceramide synthesis |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://theses.hal.science/tel-00823900 https://theses.hal.science/tel-00823900/document https://theses.hal.science/tel-00823900/file/2012_-_Le_-_Joubioux29850.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
https://theses.hal.science/tel-00823900 Sciences agricoles. Université de La Rochelle, 2012. Français. ⟨NNT : 2012LAROS363⟩ |
op_relation |
NNT: 2012LAROS363 tel-00823900 https://theses.hal.science/tel-00823900 https://theses.hal.science/tel-00823900/document https://theses.hal.science/tel-00823900/file/2012_-_Le_-_Joubioux29850.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766252530202836992 |