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Háznagy MB, Csámpai A, Ugrai I, Molnár B, Haukka M, Szakonyi Z. Stereoselective Synthesis and Catalytical Application of Perillaldehyde-Based 3-Amino-1,2-diol Regioisomers. Int J Mol Sci 2024; 25:4325. [PMID: 38673908 PMCID: PMC11050431 DOI: 10.3390/ijms25084325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/06/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
A library of regioisomeric monoterpene-based aminodiols was synthesised and applied as chiral catalysts in the addition of diethylzinc to benzaldehyde. The synthesis of the first type of aminodiols was achieved starting from (-)-8,9-dihydroperillaldehyde via reductive amination, followed by Boc protection and dihydroxylation with the OsO4/NMO system. Separation of formed stereoisomers resulted in a library of aminodiol diastereoisomers. The library of regioisomeric analogues was obtained starting from (-)-8,9-dihydroperillic alcohol, which was transformed into a mixture of allylic trichloroacetamides via Overman rearrangement. Changing the protecting group to a Boc function, the protected enamines were subjected to dihydroxylation with the OsO4/NMO system, leading to a 71:16:13 mixture of diastereoisomers, which were separated, affording the three isomers in isolated form. The obtained primary aminodiols were transformed into secondary derivatives. The regioselectivity of the ring closure of the N-benzyl-substituted aminodiols with formaldehyde was also investigated, resulting in 1,3-oxazines in an exclusive manner. To explain the stability difference between diastereoisomeric 1,3-oxazines, a series of comparative theoretical modelling studies was carried out. The obtained potential catalysts were applied in the reaction of aromatic aldehydes and diethylzinc with moderate to good enantioselectivities (up to 94% ee), whereas the opposite chiral selectivity was observed between secondary aminodiols and their ring-closed 1,3-oxazine analogues.
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Affiliation(s)
- Márton Benedek Háznagy
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary;
- Institute of Pharmaceutical Chemistry, Interdisciplinary Excellence Center, University of Szeged, Eötvös utca 6, H-6720 Szeged, Hungary;
| | - Antal Csámpai
- Institute of Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518 Budapest, Hungary;
| | - Imre Ugrai
- Institute of Pharmaceutical Chemistry, Interdisciplinary Excellence Center, University of Szeged, Eötvös utca 6, H-6720 Szeged, Hungary;
| | - Barnabás Molnár
- Department of Molecular and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm Tér 7-8, H-6720 Szeged, Hungary;
| | - Matti Haukka
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, 40351 Jyväskylä, Finland;
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, Interdisciplinary Excellence Center, University of Szeged, Eötvös utca 6, H-6720 Szeged, Hungary;
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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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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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Hayat F, Azam A, Shin D. Recent progress on the discovery of antiamoebic agents. Bioorg Med Chem Lett 2016; 26:5149-5159. [PMID: 27707603 DOI: 10.1016/j.bmcl.2016.09.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/13/2016] [Accepted: 09/14/2016] [Indexed: 12/12/2022]
Abstract
A large number of protozoans infect humans but Entamoeba histolytica is the only organism responsible for causing amoebiasis, a deadly disease after malaria. Numerous heterocycle-based antiamoebic agents have been previously synthesized as E. histolytica inhibitors and while some of these agents have shown moderate activity, the search for a novel and ideal antiamoebic compound is still ongoing. In this digest Letter, we present the latest data on antiamoebic agents from 2011 to 2016 based on the different classes of heterocyclic agents.
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Affiliation(s)
- Faisal Hayat
- College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, South Korea
| | - Amir Azam
- Department of Chemistry, Jamia Millia Islamia (Central University), Jamia Nagar, New Delhi 110025, India
| | - Dongyun Shin
- College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, South Korea.
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An expeditious four-component domino protocol for the synthesis of novel thiazolo[3,2-a]thiochromeno[4,3-d]pyrimidine derivatives as antibacterial and antibiofilm agents. Bioorg Med Chem 2016; 24:3808-17. [PMID: 27344213 DOI: 10.1016/j.bmc.2016.06.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 06/10/2016] [Accepted: 06/11/2016] [Indexed: 12/13/2022]
Abstract
An efficient domino protocol has been developed for the synthesis of new pyrimidine scaffolds, through a one-pot four-component cascade transformation via [Bmim]HSO4 ionic liquid mediated reaction, using an equimolar mixture of thiochroman-4-one, benzaldehyde, thiourea and 3-bromo-1-phenylpropan-1-one leading to the formation of a double electrophilic pyrimidine-2(5H)-thione intermediate. The intermediate regioselectively undergoes cyclization through intramolecular NH bond activation followed by CS bond formation leading to highly functionalized thiazolo[3,2-a]thiochromeno[4,3-d]pyrimidines. The ionic liquid operates efficiently under mild conditions. The recyclability and scope for recovery of the ionic liquid makes this protocol environmentally benign. Further, the compounds 5d, 5g and 5k showed promising antimicrobial activity against the tested Gram-positive bacterial strains. Among them, the compound 5d was identified as a lead molecule exhibiting promising anti-biofilm activity towards Staphylococcus aureus MTCC 96, Bacillus subtilis MTCC 121, Staphylococcus aureus MLS16 MTCC 2940 and Micrococcus luteus MTCC 2470 with IC50 values of 2.1, 1.9, 2.4 and 5.3μg/mL, respectively. Further, the compound 5d showed increased levels of intracellular ROS accumulation in Staphylococcus aureus MTCC 96 suggesting that oxidative stress resulted in bacterial cell lysis and death.
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Zimmermann SC, Sadler JM, Andrei G, Snoeck R, Balzarini J, Seley-Radtke KL. Carbocyclic 5'-nor "reverse" fleximers. Design, synthesis, and preliminary biological activity. MEDCHEMCOMM 2011; 2. [PMID: 24312722 DOI: 10.1039/c1md00094b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 5'-nor carbocyclic "reverse" flexible nucleosides or "fleximers" have been designed wherein the nucleobase scaffold resembles a "split" purine as well as a substituted pyrimidine. This modification was employed to explore recognition by both purine and pyrimidine metabolizing enzymes. The synthesis of the carbocyclic fleximers and the results of their preliminary biological screening are described herein.
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Affiliation(s)
- Sarah C Zimmermann
- Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD, 21250, USA
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El-Bayouki KA, Basyouni WM. Thiazolopyrimidines without bridge-head nitrogen: thiazolo [4,5-d] pyrimidines. J Sulphur Chem 2010. [DOI: 10.1080/17415993.2010.521939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Deev SL, Yasko MV, Karpenko IL, Korovina AN, Khandazhinskaya AL, Andronova VL, Galegov GA, Shestakova TS, Ulomskii EN, Rusinov VL, Chupakhin ON, Kukhanova MK. 1,2,4-Triazoloazine derivatives as a new type of herpes simplex virus inhibitors. Bioorg Chem 2010; 38:265-70. [PMID: 20947122 DOI: 10.1016/j.bioorg.2010.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Revised: 09/15/2010] [Accepted: 09/16/2010] [Indexed: 10/19/2022]
Abstract
A new class of inhibitors of herpes simplex virus replication was found. The compounds under study are derived from condensed 1,2,4-triazolo[5,1-c][1,2,4]triazines and 1,2,4-triazolo[1,5-a]pyrimidines, structural analogues of natural nucleic bases. Antiherpetic activity and cytotoxicity of the compounds were studied. The corresponding triphosphates of several active compounds were prepared and tested as inhibitors of DNA synthesis catalyzed by herpes simplex virus polymerase. The potential mechanism of their action is blocking of DNA dependent DNA polymerase, a key enzyme of viral replication.
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Affiliation(s)
- S L Deev
- Postovsky Institute of Organic Synthesis, Ekaterinburg, Russia
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