1
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Raji M, Le TM, Huynh T, Szekeres A, Nagy V, Zupkó I, Szakonyi Z. Divergent Synthesis, Antiproliferative and Antimicrobial Studies of 1,3-Aminoalcohol and 3-Amino-1,2-Diol Based Diaminopyrimidines. Chem Biodivers 2022; 19:e202200077. [PMID: 35349207 DOI: 10.1002/cbdv.202200077] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/18/2022] [Indexed: 12/22/2022]
Abstract
A series of novel diaminopyrimidines containing pinane moieties were synthesized via an efficient methodology starting from pinane-based aminoalcohols, aminodiols and 2,4-dichloropyrimidines. Bioassay tests demonstrated that compound 18a displayed much stronger antiproliferative activities against four human cancer cell lines (HeLa, Siha, MDA-MB-231, MCF-7 and A2780) than positive control cisplatin. In particular, compound 22a was found to be selective in inhibiting HeLa cell proliferation with cancer cell growth inhibition values higher than 95 %. Moreover, the in vitro screening of prepared compounds against different bacterial and fungal strains is reported. The results revealed that 12b and 17a, the most promising compounds, displayed selective inhibition for the Gram-positive bacteria (B. subtilis and S. aureus) with percent inhibition values ranging from 75 to 95 % at 10 μg/mL concentration. Both selective inhibition and the in vitro activity values demonstrated that these compounds have the potential to be developed into clinically important therapeutic choices for the treatment of infections caused by B. subtilis and S. aureus.
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Affiliation(s)
- Mounir Raji
- Institute of Pharmaceutical Chemistry, University of Szeged, 6720, Szeged, Eötvös u. 6, Hungary
| | - Tam Minh Le
- Institute of Pharmaceutical Chemistry, University of Szeged, 6720, Szeged, Eötvös u. 6, Hungary.,Stereochemistry Research Group of the Hungarian Academy of Sciences, 6720, Szeged, Eötvös u. 6, Hungary
| | - Thu Huynh
- Department of Microbiology, University of Szeged, 6726, Szeged, Közép fasor 52, Hungary
| | - András Szekeres
- Department of Microbiology, University of Szeged, 6726, Szeged, Közép fasor 52, Hungary
| | - Viktória Nagy
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, 6720, Szeged, Eötvös utca 6, Hungary
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, 6720, Szeged, Eötvös utca 6, Hungary.,Interdisciplinary Center of Natural Products, University of Szeged, 6720, Szeged, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, 6720, Szeged, Eötvös u. 6, Hungary.,Interdisciplinary Center of Natural Products, University of Szeged, 6720, Szeged, Hungary
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2
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Synthesis and Investigation of Pinane-Based Chiral Tridentate Ligands in the Asymmetric Addition of Diethylzinc to Aldehydes. Catalysts 2020. [DOI: 10.3390/catal10050474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A library of pinane-based chiral aminodiols, derived from natural (−)-β-pinene, were prepared and applied as chiral catalysts in the addition of diethylzinc to aldehydes. (−)-β-Pinene was reacted to provide 3-methylenenopinone, followed by a reduction of the carbonyl function to give a key allylic alcohol intermediate. Stereoselective epoxidation of the latter and subsequent ring opening of the resulting oxirane with primary and secondary amines afforded aminodiols. The regioselectivity of the ring closure of the N-substituted secondary aminodiols with formaldehyde was examined and exclusive formation of oxazolidines was observed. Treatment of the allylic alcohol with benzyl bromide provided the corresponding O-benzyl derivative, which was transformed into O-benzyl aminodiols by aminolysis. Ring closure of the N-isopropyl aminodiol derivative with formaldehyde resulted in spirooxazolidine. The obtained potential catalysts were applied in the reaction of both aromatic and aliphatic aldehydes to diethylzinc providing moderate to good enantioselectivities (up to 87% ee). Through the use of molecular modeling at an ab initio level, this phenomenon was interpreted in terms of competing reaction pathways. Molecular modeling at the RHF/LANL2DZ level of theory was successfully applied for interpretation of the stereochemical outcome of the reactions leading to display excellent (R) enantioselectivity in the examined transformation.
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3
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Le TM, Huynh T, Endre G, Szekeres A, Fülöp F, Szakonyi Z. Stereoselective synthesis and application of isopulegol-based bi- and trifunctional chiral compounds. RSC Adv 2020; 10:38468-38477. [PMID: 35517552 PMCID: PMC9057261 DOI: 10.1039/d0ra07739a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 10/10/2020] [Indexed: 12/15/2022] Open
Abstract
A new family of isopulegol-based bi- and trifunctional chiral ligands such as triols, tetrols, aminodiols and aminotriols was developed from commercially available (−)-isopulegol with antibacterial, antifungal and antioxidant activities.
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Affiliation(s)
- Tam Minh Le
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Centre
- H-6720 Szeged
- Hungary
| | - Thu Huynh
- Department of Microbiology
- University of Szeged
- 6726 Szeged
- Hungary
| | - Gábor Endre
- Department of Microbiology
- University of Szeged
- 6726 Szeged
- Hungary
| | - András Szekeres
- Department of Microbiology
- University of Szeged
- 6726 Szeged
- Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Centre
- H-6720 Szeged
- Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Centre
- H-6720 Szeged
- Hungary
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4
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Ozsvár D, Nagy V, Zupkó I, Szakonyi Z. Stereoselective Synthesis and Antiproliferative Activity of Steviol-Based Diterpen Aminodiols. Int J Mol Sci 2019; 21:ijms21010184. [PMID: 31888049 PMCID: PMC6981646 DOI: 10.3390/ijms21010184] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 12/20/2019] [Accepted: 12/22/2019] [Indexed: 11/16/2022] Open
Abstract
A library of steviol-based trifunctional chiral ligands was developed from commercially available natural stevisoide and applied as chiral catalysts in the addition of diethylzinc to benzaldehyde. The key intermediate steviol methyl ester was prepared according to literature procedure. Depending on the epoxidation process, both cis- and trans-epoxyalcohols were obtained. Subsequent oxirane ring opening with primary and secondary amines afforded 3-amino-1,2-diols. The ring opening with sodium azide followed by a “click” reaction with alkynes resulted in dihydroxytriazoles. The regioselective ring closure of N-substituted aminodiols with formaldehyde was also investigated. The resulting steviol-type aminodiols were tested against a panel of human adherent cancer cell lines (A2780, SiHa, HeLa, and MDA-MB-231). It was consistently found that the N-benzyl substituent is an essential part within the molecule and the ring closure towards N-benzyl substituted oxazolidine ring system increased the antiproliferative activity to a level comparable with that of cisplatine. In addition, structure–activity relationships were examined by assessing substituent effects on the aminodiol systems.
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Affiliation(s)
- Dániel Ozsvár
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary Excellent Center, H-6720 Szeged, Hungary;
| | - Viktória Nagy
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, H-6720 Szeged, Hungary; (V.N.); (I.Z.)
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, H-6720 Szeged, Hungary; (V.N.); (I.Z.)
- Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary Excellent Center, H-6720 Szeged, Hungary;
- Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
- Correspondence: ; Tel.: +36-62-546809; Fax: +36-62-545705
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5
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Le TM, Szilasi T, Volford B, Szekeres A, Fülöp F, Szakonyi Z. Stereoselective Synthesis and Investigation of Isopulegol-Based Chiral Ligands. Int J Mol Sci 2019; 20:ijms20164050. [PMID: 31430981 PMCID: PMC6719113 DOI: 10.3390/ijms20164050] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/05/2019] [Accepted: 08/15/2019] [Indexed: 01/18/2023] Open
Abstract
A library of isopulegol-based bi-, tri- and tetrafunctional chiral ligands has been developed from commercially available (−)-isopulegol and applied as chiral catalysts in the addition of diethylzinc to benzaldehyde. Michael addition of primary amines towards α-methylene-γ-butyrolactone, followed by reduction, was accomplished to provide aminodiols in highly stereoselective transformations. Stereoselective epoxidation of (+)-neoisopulegol, derived from natural (−)-isopulegol, and subsequent oxirane ring opening with primary amines afforded aminodiols. The regioselective ring closure of N-substituted aminodiols with formaldehyde was also investigated. Hydroxylation of (+)-neoisopulegol resulted in diol, which was then transformed into aminotriols by aminolysis of its epoxides. Dihydroxylation of (+)-neoisopulegol or derivatives with OsO4/NMO gave neoisopulegol-based di-, tri- and tetraols in highly stereoselective reactions. The antimicrobial activity of aminodiol and aminotriol derivatives as well as di-, tri- and tetraols was also explored. In addition, structure–activity relationships were examined by assessing substituent effects on the aminodiol and aminotriol systems.
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Affiliation(s)
- Tam Minh Le
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary
- Stereochemistry Research Group of the Hungarian Academy of Sciences, H-6720 Szeged, Eötvös utca 6, Hungary
| | - Tamás Szilasi
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary
| | - Bettina Volford
- Department of Microbiology, University of Szeged, 6726 Szeged, Közép fasor 52, Hungary
| | - András Szekeres
- Department of Microbiology, University of Szeged, 6726 Szeged, Közép fasor 52, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary
- Stereochemistry Research Group of the Hungarian Academy of Sciences, H-6720 Szeged, Eötvös utca 6, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary.
- Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Eötvös utca 6, Hungary.
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6
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Orosz T, Bajtai A, Minh Le T, Tanács D, Szakonyi Z, Fülöp F, Péter A, Ilisz I. Chiral high-performance liquid and supercritical fluid chromatographic enantioseparations of limonene-based bicyclic aminoalcohols and aminodiols on polysaccharide-based chiral stationary phases. Biomed Chromatogr 2019; 33:e4517. [PMID: 30807652 DOI: 10.1002/bmc.4517] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/26/2019] [Accepted: 02/18/2019] [Indexed: 01/10/2023]
Abstract
Enantioseparation of limonene-based bicyclic 1,3-aminoalcohols and 1,3,5- and 1,3,6-aminodiols was performed by normal-phase high-performance liquid chromatographic and supercritical fluid chromatographic (SFC) methods on polysaccharide-based chiral stationary phases. The effects of the composition of the mobile phase, the column temperature and the structures of the analytes and chiral selectors on retention and selectivity were investigated by normal-phase LC and SFC technique. Thermodynamic parameters derived from selectivity-temperature-dependence studies were found to be dependent on the chromatographic method applied, the nature of the chiral selector and the structural details of the analytes. Enantiorecognition in most cases was enthalpically driven but an unusual temperature behavior was also observed: decreased retention times were accompanied by improved separation factors with increasing temperature, i.e. some entropically driven separations were also observed. The elution sequence was determined in all cases. The separation of the stereoisomers was optimized in both chromatographic modalities.
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Affiliation(s)
- Tímea Orosz
- Institute of Pharmaceutical Analysis, University of Szeged, Szeged, Hungary
| | - Attila Bajtai
- Institute of Pharmaceutical Analysis, University of Szeged, Szeged, Hungary
| | - Tam Minh Le
- Institute of Pharmaceutical Chemistry and Research Group for Stereochemistry, Hungarian Academy of Sciences, University of Szeged, Szeged, Hungary
| | - Dániel Tanács
- Institute of Pharmaceutical Analysis, University of Szeged, Szeged, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry and Research Group for Stereochemistry, Hungarian Academy of Sciences, University of Szeged, Szeged, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry and Research Group for Stereochemistry, Hungarian Academy of Sciences, University of Szeged, Szeged, Hungary
| | - Antal Péter
- Institute of Pharmaceutical Analysis, University of Szeged, Szeged, Hungary
| | - István Ilisz
- Institute of Pharmaceutical Analysis, University of Szeged, Szeged, Hungary
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7
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Le TM, Csámpai A, Fülöp F, Szakonyi Z. Regio- and Stereoselective Synthesis of Bicyclic Limonene-Based Chiral Aminodiols and Spirooxazolidines. Chemistry 2018; 24:13607-13615. [PMID: 29924432 DOI: 10.1002/chem.201802484] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/12/2018] [Indexed: 01/24/2023]
Abstract
A library of monoterpene-based aminodiols was synthesized and applied as chiral catalysts in the addition of diethylzinc to benzaldehyde. The reduction of a bicyclic α-methylene ketone, derived from natural (-)-limonene followed by epoxidation, gave the key epoxy alcohol intermediate. Ring opening of the oxirane ring with primary amines induced by lithium perchlorate afforded the required aminodiols. Substituent-dependent ring closure of the secondary aminodiols with formaldehyde resulted in both spirooxazolidines and a fused 1,3-oxazine. Cyclization reactions of the studied aminodiols, resulting in spirocyclic oxazolidines and an isomeric perhydro-1,3-oxazine-fused compound along with the possible iminium intermediates, were analyzed by a systematic series of comparative DFT models performed at the B3LYP/6-31+G(d,p) level of theory.
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Affiliation(s)
- Tam Minh Le
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720, Szeged Eötvös utca 6, Hungary
| | - Antal Csámpai
- Institute of Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518, Budapest-112, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720, Szeged Eötvös utca 6, Hungary.,MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Science, Eötvös u. 6, H-6720, Szeged, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720, Szeged Eötvös utca 6, Hungary.,Interdisciplinary Centre of Natural Products, University of Szeged, H 6720, Szeged, Hungary
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8
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Tashenov Y, Daniels M, Robeyns K, Van Meervelt L, Dehaen W, Suleimen YM, Szakonyi Z. Stereoselective Syntheses and Application of Chiral Bi- and Tridentate Ligands Derived from (+)-Sabinol. Molecules 2018; 23:molecules23040771. [PMID: 29584708 PMCID: PMC6017647 DOI: 10.3390/molecules23040771] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/16/2022] Open
Abstract
A library of bidentate diols, as well as tridentate triols and aminodiols, derived from (+)-sabinol, was synthesized in a stereoselective manner. Sabinol was transformed into allylic trichloroacetamide via Overman rearrangement of the corresponding trichloroacetimidate. After changing the protecting group to Boc, the enamine was subjected to stereospecific dihydroxylation with OsO4/NMO, resulting in the (1R,2R,3R,5R)-aminodiol diastereomer. The obtained primary aminodiol was transformed to a secondary analogue. The ring closure of the N-benzyl-substituted aminodiol with formaldehyde was investigated and regioselective formation of the spiro-oxazolidine ring was observed. Hydroboration or dihydroxylation of sabinol or its benzyl ether with OsO4/NMO resulted in the formation of sabinane-based diols and triols following a highly stereospecific reaction. Treatment of sabinol with m-CPBA afforded O-benzoyl triol as a diastereoisomer of the directly dihydroxylated product, instead of the expected epoxy alcohol. The resulting aminodiols, diol, and triols were applied as chiral catalysts in the reaction of diethylzinc and benzaldehyde from moderate to good selectivity.
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Affiliation(s)
- Yerbolat Tashenov
- Institute of Applied Chemistry, Chemistry Department of L.N. Gumilyov Eurasian National University, Munaitpassov st., 5, 010008 Astana, Kazakhstan.
| | - Mathias Daniels
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Koen Robeyns
- IMCN, Molecules Solids and Reactivity division (MOST), Université catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
| | - Luc Van Meervelt
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Wim Dehaen
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Yerlan M Suleimen
- Institute of Applied Chemistry, Chemistry Department of L.N. Gumilyov Eurasian National University, Munaitpassov st., 5, 010008 Astana, Kazakhstan.
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
- Interdisciplinary Centre of Natural Products, University of Szeged, H 6720 Szeged, Hungary.
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9
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Lebel H, Mamani Laparra L, Khalifa M, Trudel C, Audubert C, Szponarski M, Dicaire Leduc C, Azek E, Ernzerhof M. Synthesis of oxazolidinones: rhodium-catalyzed C-H amination of N-mesyloxycarbamates. Org Biomol Chem 2018; 15:4144-4158. [PMID: 28422263 DOI: 10.1039/c7ob00378a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
N-Mesyloxycarbamates undergo intramolecular C-H amination reactions to afford oxazolidinones in good to excellent yields in the presence of rhodium(ii) carboxylate catalysts. The reaction is performed under green conditions and potassium carbonate is used, forming biodegradable potassium mesylate as a reaction by-product. This method enables the production of electron-rich, electron-deficient, aromatic and heteroaromatic oxazolidinones in good to excellent yields. Conformationally restricted cyclic secondary N-mesyloxycarbamates furnish cis-oxazolidinones in high yields and selectivity; DFT calculations are provided to account for the observed selectivity. trans-Oxazolidinones were prepared from acyclic secondary N-mesyloxycarbamates using Rh2(oct)4. The selectivity was reverted with a cytoxazone N-mesyloxycarbamate precursor using large chiral rhodium(ii) carboxylate complexes, affording the corresponding cis-oxazolidinone. This orthogonal selectivity was used to achieve the formal synthesis of (-)-cytoxazone.
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Affiliation(s)
- Hélène Lebel
- Department of Chemistry and Centre in Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3C 3J7, Canada.
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10
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Le Minh T, Fülöp F, Szakonyi Z. Stereoselective Synthesis of Limonene-Based Chiral 1,3-Amino Alcohols and Aminodiols. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tam Le Minh
- Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6 6720 Szeged Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6 6720 Szeged Hungary
- Stereochemistry Research Group of the Hungarian Academy of Sciences; Eötvös u. 6 6720 Szeged Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6 6720 Szeged Hungary
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11
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Synthesis Approaches to (-)-Cytoxazone, a Novel Cytokine Modulator, and Related Structures. Molecules 2016; 21:molecules21091176. [PMID: 27608004 PMCID: PMC6274428 DOI: 10.3390/molecules21091176] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 08/22/2016] [Accepted: 08/30/2016] [Indexed: 11/16/2022] Open
Abstract
(−)-Cytoxazone, originally isolated from cultures of a Streptomyces species has an oxazolidin-2-one 4,5-disubstituted ring. It is known that this natural product presents a cytokine modulator effect through the signaling pathway of Th2 cells (type 2 cytokines), which are involved in the process of growth and differentiation of cells. From this, the interest in the development of research aimed at the total synthesis of this molecule and its analogs has remained high, which can be confirmed by the large number of publications on the topic, more than 30 to date. This review focuses on the various creative methods for the synthesis of (−)-cytoxazone and its congeners. The assessment of the preparation of this oxazolidinone and related structures serves as a treatise on the efforts made in the synthesis of this important class of compound from its first total synthesis in 1999.
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12
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Szakonyi Z, Csőr Á, Csámpai A, Fülöp F. Stereoselective Synthesis and Modelling-Driven Optimisation of Carane-Based Aminodiols and 1,3-Oxazines as Catalysts for the Enantioselective Addition of Diethylzinc to Benzaldehyde. Chemistry 2016; 22:7163-73. [PMID: 27072603 DOI: 10.1002/chem.201600749] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Indexed: 11/12/2022]
Abstract
The reductive amination of (-)-2-carene-3-aldehyde, prepared in two steps from (-)-perillaldehyde, furnished 2-carene-based allylamines. tert-Butyloxycarbonyl (Boc) or carbobenzyloxy (Cbz) protection of the resulting amines, followed by stereoselective dihydroxylation in highly stereospecific reactions with OsO4 and subsequent deprotection, resulted in N-benzylaminodiols, which were transformed to primary and tertiary aminodiols. The reactions of the N-benzyl- and N-(1-phenylethyl)-substituted derivatives with formaldehyde led to highly regioselective ring closure, resulting in carane-fused 1,3-oxazines. The aminodiols and their 1,3-oxazine derivatives were applied as chiral catalysts in the enantioselective addition of diethylzinc to aldehydes. The best (R) enantioselectivity was observed in the case of the N-((R)-1-phenylethyl)-substituted aminodiol, whereas the opposite chiral direction was preferred when the 1,3-oxazines were applied. Through the use of molecular modelling at an ab initio level, this phenomenon was interpreted in terms of competing reaction pathways. Molecular modelling at the RHF/LANL2DZ level of theory was successfully applied for a mechanism-based interpretation of the stereochemical outcome of the reactions leading to the development of further 1,3-oxazine-based ligands, which display excellent (S) enantioselectivity (95 and 98 % ee) in the examined transformation.
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Affiliation(s)
- Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720, Szeged, Hungary
| | - Árpád Csőr
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720, Szeged, Hungary
| | - Antal Csámpai
- Institute of Chemistry, Eötvös Loránd University, P.O. Box 32, 1518, Budapest-112, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720, Szeged, Hungary.
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13
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A Short and Efficient Asymmetric Synthesis of (±)-epi-Cytoxazone from cis-(1R,2S,5R)-Menthyl 4-Methoxyphenylglycidates. Chem Nat Compd 2014. [DOI: 10.1007/s10600-014-1161-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Csillag K, Németh L, Martinek TA, Szakonyi Z, Fülöp F. Stereoselective synthesis of pinane-type tridentate aminodiols and their application in the enantioselective addition of diethylzinc to benzaldehyde. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.01.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Kas’yan LI, Pal’chikov VA, Bondarenko YS. Five-membered oxaza heterocyclic compounds on the basis of epoxides and aziridines. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2011. [DOI: 10.1134/s1070428011060017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Stereoselective synthesis of carane-based aminodiols as chiral ligands for the catalytic addition of diethylzinc to aldehydes. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.06.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Detz RJ, Abiri Z, le Griel R, Hiemstra H, van Maarseveen JH. Enantioselective Copper-Catalysed Propargylic Substitution: Synthetic Scope Study and Application in Formal Total Syntheses of (+)-Anisomycin and (−)-Cytoxazone. Chemistry 2011; 17:5921-30. [DOI: 10.1002/chem.201003727] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Indexed: 11/09/2022]
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Colpaert F, Mangelinckx S, De Brabandere S, De Kimpe N. Asymmetric Synthesis of α-Chloro-β-amino-N-sulfinyl Imidates as Chiral Building Blocks. J Org Chem 2011; 76:2204-13. [DOI: 10.1021/jo200082w] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Filip Colpaert
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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Asymmetric synthesis of (4S,5S)-2-oxo-4-phenyloxazolidine-5-carboxylic acid using a 1,2-addition of PhMgBr to an N-sulfinimine derived from (R)-glyceraldehyde acetonide and (S)-t-BSA. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.10.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Mangelinckx S, Nural Y, Dondas HA, Denolf B, Sillanpää R, De Kimpe N. Diastereoselective synthesis of 6-functionalized 4-aryl-1,3-oxazinan-2-ones and their application in the synthesis of 3-aryl-1,3-aminoalcohols and 6-arylpiperidine-2,4-diones. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.113] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kas’yan LI, Pal’chikov VA. Cage-like amino alcohols. synthesis, reactions, and application. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2010. [DOI: 10.1134/s107042801001001x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Reddy RS, Chouthaiwale PV, Suryavanshi G, Chavan VB, Sudalai A. Co(iii)(salen)-catalyzed HKR of two stereocentered alkoxy- and azido epoxides: a concise enantioselective synthesis of (S,S)-reboxetine and (+)-epi-cytoxazone. Chem Commun (Camb) 2010; 46:5012-4. [DOI: 10.1039/c0cc00650e] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kwit M, Rozwadowska MD, Gawroński J, Grajewska A. Density Functional Theory Calculations of the Optical Rotation and Electronic Circular Dichroism: The Absolute Configuration of the Highly Flexible trans-Isocytoxazone Revised. J Org Chem 2009; 74:8051-63. [DOI: 10.1021/jo901175s] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Marcin Kwit
- Department of Chemistry, Adam Mickiewicz University, 60-780 Poznań, Poland
| | | | - Jacek Gawroński
- Department of Chemistry, Adam Mickiewicz University, 60-780 Poznań, Poland
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Kim SG, Park TH. An efficient synthesis of (+)-epi-cytoxazone via asymmetric organocatalysis. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.06.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Affiliation(s)
- Masaya Ikunaka
- Research & Development Center, Nagase & Co., Ltd., 2-2-3 Murotani, Nishi-ku, Kobe, 651-2241 Japan
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Szakonyi Z, Hetényi A, Fülöp F. Synthesis and application of monoterpene-based chiral aminodiols. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.07.065] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ham WH, Pham VT, Joo JE, Tian YS, Kim YH, Lee KY, Oh CY, Jeongc JH. A Concise Synthesis of (-)-Cytoxazone. HETEROCYCLES 2008. [DOI: 10.3987/com-08-11446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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