Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating Agents

In lipase-catalyzed kinetic resolutions (KRs), the choice of immobilization support and acylating agents (AAs) is crucial. Lipase B from <i>Candida antarctica</i> immobilized onto magnetic nanoparticles (CaLB-MNPs) has been successfully used for diverse KRs of racemic compounds, but ther...

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Main Authors: Fausto M. W. G. Silva, József Szemes, Akan Mustashev, Orsolya Takács, Ali O. Imarah, László Poppe
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Life
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Online Access:https://www.mdpi.com/2075-1729/13/7/1560
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author Fausto M. W. G. Silva
József Szemes
Akan Mustashev
Orsolya Takács
Ali O. Imarah
László Poppe
author_facet Fausto M. W. G. Silva
József Szemes
Akan Mustashev
Orsolya Takács
Ali O. Imarah
László Poppe
author_sort Fausto M. W. G. Silva
collection DOAJ
description In lipase-catalyzed kinetic resolutions (KRs), the choice of immobilization support and acylating agents (AAs) is crucial. Lipase B from <i>Candida antarctica</i> immobilized onto magnetic nanoparticles (CaLB-MNPs) has been successfully used for diverse KRs of racemic compounds, but there is a lack of studies of the utilization of this potent biocatalyst in the KR of chiral amines, important pharmaceutical building blocks. Therefore, in this work, several racemic amines (heptane-2-amine, 1-methoxypropan-2-amine, 1-phenylethan-1-amine, and 4-phenylbutan-2-amine, (±)-<b>1a</b>–<b>d</b>, respectively) were studied in batch and continuous-flow mode utilizing different AAs, such as diisopropyl malonate <b>2A</b>, isopropyl 2-cyanoacetate <b>2B</b>, and isopropyl 2-ethoxyacetate <b>2C</b>. The reactions performed with CaLB-MNPs were compared with Novozym 435 (N435) and the results in the literature. CaLB-MNPs were less active than N435, leading to lower conversion, but demonstrated a higher enantiomer selectivity, proving to be a good alternative to the commercial form. Compound <b>2C</b> resulted in the best balance between conversion and enantiomer selectivity among the acylating agents. CaLB-MNPs proved to be efficient in the KR of chiral amines, having comparable or superior properties to other CaLB forms utilizing porous matrices for immobilization. An additional advantage of using CaLB-MNPs is that the purification and reuse processes are facilitated via magnetic retention/separation. In the continuous-flow mode, the usability and operational stability of CaLB-MNPs were reaffirmed, corroborating with previous studies, and the results overall improve our understanding of this potent biocatalyst and the convenient U-shape reactor used.
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spelling doaj.art-d1aedcf7e6614246bc9894bb710efe622023-11-18T20:10:13ZengMDPI AGLife2075-17292023-07-01137156010.3390/life13071560Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating AgentsFausto M. W. G. Silva0József Szemes1Akan Mustashev2Orsolya Takács3Ali O. Imarah4László Poppe5Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, HungaryDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, HungaryDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, HungaryDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, HungaryDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, HungaryDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, HungaryIn lipase-catalyzed kinetic resolutions (KRs), the choice of immobilization support and acylating agents (AAs) is crucial. Lipase B from <i>Candida antarctica</i> immobilized onto magnetic nanoparticles (CaLB-MNPs) has been successfully used for diverse KRs of racemic compounds, but there is a lack of studies of the utilization of this potent biocatalyst in the KR of chiral amines, important pharmaceutical building blocks. Therefore, in this work, several racemic amines (heptane-2-amine, 1-methoxypropan-2-amine, 1-phenylethan-1-amine, and 4-phenylbutan-2-amine, (±)-<b>1a</b>–<b>d</b>, respectively) were studied in batch and continuous-flow mode utilizing different AAs, such as diisopropyl malonate <b>2A</b>, isopropyl 2-cyanoacetate <b>2B</b>, and isopropyl 2-ethoxyacetate <b>2C</b>. The reactions performed with CaLB-MNPs were compared with Novozym 435 (N435) and the results in the literature. CaLB-MNPs were less active than N435, leading to lower conversion, but demonstrated a higher enantiomer selectivity, proving to be a good alternative to the commercial form. Compound <b>2C</b> resulted in the best balance between conversion and enantiomer selectivity among the acylating agents. CaLB-MNPs proved to be efficient in the KR of chiral amines, having comparable or superior properties to other CaLB forms utilizing porous matrices for immobilization. An additional advantage of using CaLB-MNPs is that the purification and reuse processes are facilitated via magnetic retention/separation. In the continuous-flow mode, the usability and operational stability of CaLB-MNPs were reaffirmed, corroborating with previous studies, and the results overall improve our understanding of this potent biocatalyst and the convenient U-shape reactor used.https://www.mdpi.com/2075-1729/13/7/1560biocatalysiskinetic resolutionchiral aminesacylationlipase B from <i>Candida antarctica</i>magnetic nanoparticles
spellingShingle Fausto M. W. G. Silva
József Szemes
Akan Mustashev
Orsolya Takács
Ali O. Imarah
László Poppe
Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating Agents
Life
biocatalysis
kinetic resolution
chiral amines
acylation
lipase B from <i>Candida antarctica</i>
magnetic nanoparticles
title Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating Agents
title_full Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating Agents
title_fullStr Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating Agents
title_full_unstemmed Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating Agents
title_short Immobilization of Lipase B from <i>Candida antarctica</i> on Magnetic Nanoparticles Enhances Its Selectivity in Kinetic Resolutions of Chiral Amines with Several Acylating Agents
title_sort immobilization of lipase b from i candida antarctica i on magnetic nanoparticles enhances its selectivity in kinetic resolutions of chiral amines with several acylating agents
topic biocatalysis
kinetic resolution
chiral amines
acylation
lipase B from <i>Candida antarctica</i>
magnetic nanoparticles
url https://www.mdpi.com/2075-1729/13/7/1560
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