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Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds

A new family of isopulegol-based bi- and trifunctional chiral ligands was developed from commercially available (−)-isopulegol. Nucleophilic addition of primary amines towards (+)-α-methylene-γ-butyrolactone was accomplished, followed by reduction of the obtained β-aminolactones to provide aminodiol...

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Autores principales: Le, Tam Minh, Huynh, Thu, Endre, Gábor, Szekeres, András, Fülöp, Ferenc, Szakonyi, Zsolt
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057261/
https://www.ncbi.nlm.nih.gov/pubmed/35517552
http://dx.doi.org/10.1039/d0ra07739a
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author Le, Tam Minh
Huynh, Thu
Endre, Gábor
Szekeres, András
Fülöp, Ferenc
Szakonyi, Zsolt
author_facet Le, Tam Minh
Huynh, Thu
Endre, Gábor
Szekeres, András
Fülöp, Ferenc
Szakonyi, Zsolt
author_sort Le, Tam Minh
collection PubMed
description A new family of isopulegol-based bi- and trifunctional chiral ligands was developed from commercially available (−)-isopulegol. Nucleophilic addition of primary amines towards (+)-α-methylene-γ-butyrolactone was accomplished, followed by reduction of the obtained β-aminolactones to provide aminodiols in highly stereoselective reactions. Epoxidation of (−)-isopulegol and subsequent oxirane ring opening with primary amines resulted in N-substituted aminodiols. The regioselective ring closure of these aminodiols with formaldehyde was also investigated. Benzylation of isopulegol furnished O-benzyl-protected isopulegol, which was transformed into aminoalcohols via epoxidation and ring opening of the corresponding epoxides. First benzyl-protected isopulegol was subjected to hydroxylation and epoxidation, then aminolysis of the served oxiranes delivered aminodiols. On the other hand, (−)-isopulegol was oxidised to diol, which was again converted into both dibenzyl- and monobenzyl-protected diol derivatives. The products were transformed into aminoalcohols and aminodiols, respectively, by aminolysis of their epoxides. The ring opening of epoxides, derived from diols with primary amines was also performed producing aminotriols. Dihydroxylation of (−)-isopulegol or derivatives with OsO(4)/NMO gave isopulegol-based di-, tri- and tetraols. The antimicrobial activity and antioxidant property, measuring DPPH˙ free radical scavenging activity of aminodiol and aminotriol derivatives as well as di-, tri- and tetraols were also explored. In addition, structure–activity relationships were examined from the aspects of substituent effects and stereochemistry on the aminodiol and aminotriol systems.
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spelling pubmed-90572612022-05-04 Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds Le, Tam Minh Huynh, Thu Endre, Gábor Szekeres, András Fülöp, Ferenc Szakonyi, Zsolt RSC Adv Chemistry A new family of isopulegol-based bi- and trifunctional chiral ligands was developed from commercially available (−)-isopulegol. Nucleophilic addition of primary amines towards (+)-α-methylene-γ-butyrolactone was accomplished, followed by reduction of the obtained β-aminolactones to provide aminodiols in highly stereoselective reactions. Epoxidation of (−)-isopulegol and subsequent oxirane ring opening with primary amines resulted in N-substituted aminodiols. The regioselective ring closure of these aminodiols with formaldehyde was also investigated. Benzylation of isopulegol furnished O-benzyl-protected isopulegol, which was transformed into aminoalcohols via epoxidation and ring opening of the corresponding epoxides. First benzyl-protected isopulegol was subjected to hydroxylation and epoxidation, then aminolysis of the served oxiranes delivered aminodiols. On the other hand, (−)-isopulegol was oxidised to diol, which was again converted into both dibenzyl- and monobenzyl-protected diol derivatives. The products were transformed into aminoalcohols and aminodiols, respectively, by aminolysis of their epoxides. The ring opening of epoxides, derived from diols with primary amines was also performed producing aminotriols. Dihydroxylation of (−)-isopulegol or derivatives with OsO(4)/NMO gave isopulegol-based di-, tri- and tetraols. The antimicrobial activity and antioxidant property, measuring DPPH˙ free radical scavenging activity of aminodiol and aminotriol derivatives as well as di-, tri- and tetraols were also explored. In addition, structure–activity relationships were examined from the aspects of substituent effects and stereochemistry on the aminodiol and aminotriol systems. The Royal Society of Chemistry 2020-10-19 /pmc/articles/PMC9057261/ /pubmed/35517552 http://dx.doi.org/10.1039/d0ra07739a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Le, Tam Minh
Huynh, Thu
Endre, Gábor
Szekeres, András
Fülöp, Ferenc
Szakonyi, Zsolt
Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds
title Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds
title_full Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds
title_fullStr Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds
title_full_unstemmed Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds
title_short Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds
title_sort stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057261/
https://www.ncbi.nlm.nih.gov/pubmed/35517552
http://dx.doi.org/10.1039/d0ra07739a
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