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Dam D, Lagerweij NR, Janmaat KM, Kok K, Bouwman E, Codée JDC. Organic Dye-Sensitized Nitrene Generation: Intermolecular Aziridination of Unactivated Alkenes. J Org Chem 2024; 89:3251-3258. [PMID: 38358354 PMCID: PMC10913034 DOI: 10.1021/acs.joc.3c02709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/19/2024] [Accepted: 02/05/2024] [Indexed: 02/16/2024]
Abstract
Aziridines are important structural motifs and intermediates, and several synthetic strategies for the direct aziridination of alkenes have been introduced. However, many of these strategies require an excess of activated alkene, suffer from competing side-reactions, have limited functional group tolerance, or involve precious transition metal-based catalysts. Herein, we demonstrate the direct aziridination of alkenes by combining sulfonyl azides as a triplet nitrene source with a catalytic amount of an organic dye functioning as photosensitizer. We show how the nature of the sulfonyl azide, in combination with the triplet-excited state energy of the photosensitizer, affects the aziridination yield and provide a mechanistic rationale to account for the observed dependence of the reaction yield on the nature of the organic dye and sulfonyl azide reagents. The optimized reaction conditions enable the aziridination of structurally diverse and complex alkenes, carrying various functional groups, with the alkene as the limiting reagent.
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Affiliation(s)
- Dennis Dam
- Leiden Institute of Chemistry, Universiteit
Leiden, Leiden 2333 CC, The Netherlands
| | - Nathan R. Lagerweij
- Leiden Institute of Chemistry, Universiteit
Leiden, Leiden 2333 CC, The Netherlands
| | - Katharina M. Janmaat
- Leiden Institute of Chemistry, Universiteit
Leiden, Leiden 2333 CC, The Netherlands
| | - Ken Kok
- Leiden Institute of Chemistry, Universiteit
Leiden, Leiden 2333 CC, The Netherlands
| | - Elisabeth Bouwman
- Leiden Institute of Chemistry, Universiteit
Leiden, Leiden 2333 CC, The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute of Chemistry, Universiteit
Leiden, Leiden 2333 CC, The Netherlands
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2
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Corman HN, McNamara CW, Bakowski MA. Drug Discovery for Cutaneous Leishmaniasis: A Review of Developments in the Past 15 Years. Microorganisms 2023; 11:2845. [PMID: 38137989 PMCID: PMC10745741 DOI: 10.3390/microorganisms11122845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
Leishmaniasis is a group of vector-borne, parasitic diseases caused by over 20 species of the protozoan Leishmania spp. The three major disease classifications, cutaneous, visceral, and mucocutaneous, have a range of clinical manifestations from self-healing skin lesions to hepatosplenomegaly and mucosal membrane damage to fatality. As a neglected tropical disease, leishmaniasis represents a major international health challenge, with nearly 350 million people living at risk of infection a year. The current chemotherapeutics used to treat leishmaniasis have harsh side effects, prolonged and costly treatment regimens, as well as emerging drug resistance, and are predominantly used for the treatment of visceral leishmaniasis. There is an undeniable need for the identification and development of novel chemotherapeutics targeting cutaneous leishmaniasis (CL), largely ignored by concerted drug development efforts. CL is mostly non-lethal and the most common presentation of this disease, with nearly 1 million new cases reported annually. Recognizing this unaddressed need, substantial yet fragmented progress in early drug discovery efforts for CL has occurred in the past 15 years and was outlined in this review. However, further work needs to be carried out to advance early discovery candidates towards the clinic. Importantly, there is a paucity of investment in the translation and development of therapies for CL, limiting the emergence of viable solutions to deal with this serious and complex international health problem.
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Affiliation(s)
- Hannah N. Corman
- Calibr at Scripps Research, La Jolla, CA 92037, USA; (C.W.M.); (M.A.B.)
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Dequina HJ, Jones CL, Schomaker JM. Recent updates and future perspectives in aziridine synthesis and reactivity. Chem 2023; 9:1658-1701. [PMID: 37681216 PMCID: PMC10482075 DOI: 10.1016/j.chempr.2023.04.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
In this review, selected recent advances in the preparation and reactivity of aziridines using modern synthetic approaches are highlighted, while comparing these new strategies with more classical approaches. This critical analysis is designed to help identify current gaps in the field and is showcasing new and exciting opportunities to move the chemistry of aziridines forward in the future.
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Affiliation(s)
- Hillary J. Dequina
- Department of Chemistry, University of Wisconsin, 1101 N. University Avenue, Madison, WI 53706, USA
| | - Corey L. Jones
- Department of Chemistry, University of Wisconsin, 1101 N. University Avenue, Madison, WI 53706, USA
| | - Jennifer M. Schomaker
- Department of Chemistry, University of Wisconsin, 1101 N. University Avenue, Madison, WI 53706, USA
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Łowicki D, Przybylski P. Cascade synthetic strategies opening access to medicinal-relevant aliphatic 3- and 4-membered N-heterocyclic scaffolds. Eur J Med Chem 2022; 238:114438. [PMID: 35567964 DOI: 10.1016/j.ejmech.2022.114438] [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: 11/11/2021] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 12/23/2022]
Abstract
Cascade reactions are often 'employed' by nature to construct structurally diverse nitrogen-containing heterocycles in a highly stereoselective fashion, i.e., secondary metabolites important for pharmacy. Nitrogen-containing heterocycles of three- and four-membered rings, as standalone and bicyclic compounds, inhibit different enzymes and are pharmacophores of approved drugs or drug candidates considered in many therapies, e.g. anticancer, antibacterial or antiviral. Domino transformations are in most cases in line with modern green chemistry concepts due to atom economy, one-pot procedures often without use the protective groups, time-saving and at markedly lower costs than multistep transformations. The tandem approaches can help to obtain novel N-heterocyclic scaffolds, functionalized according to structural requirements of the target in cells, taking into account the nature of functional group and stereochemistry. On the other hand cascade strategies allow to modify small N-heterocyclic rings in a systematic way, which is beneficial for structure-activity relationship (SAR) analyses. This review is focused on the biological relevance of the N-heterocyclic scaffolds with smaller 3- and 4-membered rings among approved drugs and leading structures of drug candidates. The cascade synthetic strategies offering N-heterocyclic scaffolds, at relatively good yields and high stereoselectivity, are discussed here. The review covers mainly years from 2015 to 2021.
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Affiliation(s)
- Daniel Łowicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland.
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Clementino LDC, Fernandes GFS, Prokopczyk IM, Laurindo WC, Toyama D, Motta BP, Baviera AM, Henrique-Silva F, dos Santos JL, Graminha MAS. Design, synthesis and biological evaluation of N-oxide derivatives with potent in vivo antileishmanial activity. PLoS One 2021; 16:e0259008. [PMID: 34723989 PMCID: PMC8559926 DOI: 10.1371/journal.pone.0259008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/09/2021] [Indexed: 11/18/2022] Open
Abstract
Leishmaniasis is a neglected disease that affects 12 million people living mainly in developing countries. Herein, 24 new N-oxide-containing compounds were synthesized followed by in vitro and in vivo evaluation of their antileishmanial activity. Compound 4f, a furoxan derivative, was particularly remarkable in this regard, with EC50 value of 3.6 μM against L. infantum amastigote forms and CC50 value superior to 500 μM against murine peritoneal macrophages. In vitro studies suggested that 4f may act by a dual effect, by releasing nitric oxide after biotransformation and by inhibiting cysteine protease CPB (IC50: 4.5 μM). In vivo studies using an acute model of infection showed that compound 4f at 7.7 mg/Kg reduced ~90% of parasite burden in the liver and spleen of L. infantum-infected BALB/c mice. Altogether, these outcomes highlight furoxan 4f as a promising compound for further evaluation as an antileishmanial agent.
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Affiliation(s)
- Leandro da Costa Clementino
- São Paulo State University (UNESP), Institute of Chemistry, Araraquara, Brazil
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
| | - Guilherme Felipe Santos Fernandes
- São Paulo State University (UNESP), Institute of Chemistry, Araraquara, Brazil
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
| | | | - Wilquer Castro Laurindo
- São Paulo State University (UNESP), Institute of Chemistry, Araraquara, Brazil
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
| | - Danyelle Toyama
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos, Brazil
| | - Bruno Pereira Motta
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
| | - Amanda Martins Baviera
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
| | - Flávio Henrique-Silva
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos, Brazil
| | - Jean Leandro dos Santos
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
- * E-mail: (JLS); (MASG)
| | - Marcia A. S. Graminha
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
- * E-mail: (JLS); (MASG)
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Lam YP, Lam Z, Yeung YY. Zwitterion-Catalyzed Isomerization of Maleic to Fumaric Acid Diesters. J Org Chem 2021; 86:1183-1190. [PMID: 33315398 DOI: 10.1021/acs.joc.0c02316] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fumaric acid diesters are important building blocks for organic synthesis. A class of zwitterionic organocatalysts based on an amide anion/iminium cation charge pair were found to be effective in catalyzing the isomerization of maleic acid diesters to give fumaric acid diesters. Comparison of the performance of different zwitterionic organocatalysts toward the reaction revealed that nonclassical hydrogen bonding was involved in the stabilization of the Michael adduct intermediate.
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Affiliation(s)
- Ying-Pong Lam
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Zachary Lam
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Ying-Yeung Yeung
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
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7
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Ge L, Zhao N, Miao Y, Zhang S, Zhao M, Luo Y, Lai H, Huang Y, Wang Y. Inhibitory effect of edible natural compounds with di- and tri-carboxyl moiety on endogenous protease inducing disassembly and degradation of myofibrils from grass carp (Ctenopharyngodon idella). Food Res Int 2020; 137:109457. [PMID: 33233133 DOI: 10.1016/j.foodres.2020.109457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/28/2020] [Accepted: 06/15/2020] [Indexed: 12/18/2022]
Abstract
Inhibition of endogenous protease is a rapid and feasible approach to control the proteolysis proceeding of post mortem fish flesh. In the present study, the in vitro inhibitory effects of common edible di- and tri-carboxylic acids and salts on endogenous proteolytic activities as well as myofibrillar disassembly and degradation mediated by crude enzyme of grass carp muscle were investigated. The results showed that among the compounds tested, maleic acid, fumaric acid, tartaric acid and malic acid were the most effective inhibitor for cathepsin B, L and calpain, with IC50 ranging from 7.76 to 30.13 mM, from 32.38 to 65.12 mM, from 1.06 to 6.76 mM, respectively. Also, relatively lower Ki (ranging from 1.04 to 43.21 mM) of these compounds were found towards cathepsin B, L and calpain. Incubation of myofibrillar protein with crude enzyme in the presence of di- and tri-carboxylic compounds could remarkably suppress the dissociation and degradation of myosin heavy chain (MHC), and ameliorate the loss of heat shock protein (HSP) in myofibrils, with tartaric acid and fumaric acid proved more effective than other compounds, possibly implicating their application as potential and efficient inhibitors for quality control of fish muscle products.
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Affiliation(s)
- Lihong Ge
- College of Life Science, Sichuan Normal University, Chengdu, China.
| | - Nan Zhao
- Institute of Agro-Products Processing Science and Technology, Sichuan Academy of Agricultural Sciences, Chengdu, China.
| | - Yuzhi Miao
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Siyuan Zhang
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Minhui Zhao
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Yongyuan Luo
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Haimei Lai
- Institute of Agro-Products Processing Science and Technology, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Yuli Huang
- Institute of Agro-Products Processing Science and Technology, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Yali Wang
- Institute of Agro-Products Processing Science and Technology, Sichuan Academy of Agricultural Sciences, Chengdu, China
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Juettner NE, Bogen JP, Bauer TA, Knapp S, Pfeifer F, Huettenhain SH, Meusinger R, Kraemer A, Fuchsbauer HL. Decoding the Papain Inhibitor from Streptomyces mobaraensis as Being Hydroxylated Chymostatin Derivatives: Purification, Structure Analysis, and Putative Biosynthetic Pathway. JOURNAL OF NATURAL PRODUCTS 2020; 83:2983-2995. [PMID: 32998509 DOI: 10.1021/acs.jnatprod.0c00201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Streptomyces mobaraensis produces the papain inhibitor SPI consisting of a 12 kDa protein and small active compounds (SPIac). Purification of the papain inhibitory compounds resulted in four diverse chymostatin derivatives that were characterized by NMR and MS analysis. Chymostatins are hydrophobic tetrapeptide aldehydes from streptomycetes, e.g., S. lavendulae and S. hygroscopicus, that reverse chymosin-mediated angiotensin activation and inhibit other serine and cysteine proteases. Chymotrypsin and papain were both inhibited by the SPIac compounds in the low nanomolar range. SPIac differs from the characterized chymostatins by the exchange of phenylalanine for tyrosine. The crystal structure of one of these chymostatin variants confirmed its molecular structure and revealed a S-configured hemithioacetal bond with the catalytic Cys25 thiolate as well as close interactions with hydrophobic S1 and S2 subsite amino acids. A model for chymostatin biosynthesis is provided based on the discovery of clustered genes encoding several putative nonribosomal peptide synthetases; among them, there is the unusual CstF enzyme that accommodates two canonical amino acid activation domains as well as three peptide carrier protein domains.
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Affiliation(s)
- Norbert E Juettner
- The Department of Chemical Engineering and Biotechnology, University of Applied Sciences of Darmstadt, Stephanstraße 7, 64295 Darmstadt, Germany
- The Department of Biology, Technische Universität Darmstadt, Schnittspahnstraße 10, 64287 Darmstadt, Germany
| | - Jan P Bogen
- The Department of Chemical Engineering and Biotechnology, University of Applied Sciences of Darmstadt, Stephanstraße 7, 64295 Darmstadt, Germany
| | - Tobias A Bauer
- The Department of Chemical Engineering and Biotechnology, University of Applied Sciences of Darmstadt, Stephanstraße 7, 64295 Darmstadt, Germany
| | - Stefan Knapp
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Straße 9, 60438 Frankfurt am Main, Germany
- Structural Genomics Consortium, Buchmann Institute for Molecular Life Sciences (BMLS), Goethe University Frankfurt, Max-von-Laue-Straße 15, 60438 Frankfurt am Main, Germany
| | - Felicitas Pfeifer
- The Department of Biology, Technische Universität Darmstadt, Schnittspahnstraße 10, 64287 Darmstadt, Germany
| | - Stefan H Huettenhain
- The Department of Chemical Engineering and Biotechnology, University of Applied Sciences of Darmstadt, Stephanstraße 7, 64295 Darmstadt, Germany
| | - Reinhard Meusinger
- The Department of Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Straße 8, 64287 Darmstadt, Germany
| | - Andreas Kraemer
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Straße 9, 60438 Frankfurt am Main, Germany
| | - Hans-Lothar Fuchsbauer
- The Department of Chemical Engineering and Biotechnology, University of Applied Sciences of Darmstadt, Stephanstraße 7, 64295 Darmstadt, Germany
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Carramiñana V, Ochoa de Retana AM, de Los Santos JM, Palacios F. First synthesis of merged hybrids phosphorylated azirino[2,1-b]benzo[e][1,3]oxazine derivatives as anticancer agents. Eur J Med Chem 2019; 185:111771. [PMID: 31671309 DOI: 10.1016/j.ejmech.2019.111771] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/07/2019] [Accepted: 10/07/2019] [Indexed: 10/25/2022]
Abstract
This work describes a straightforward diastereoselective synthetic access to azirino[2,1-b]benzo[e][1,3]oxazines containing phosphorus substituents such as phosphonate or phosphine oxide, by means of nucleophilic addition of functionalized phenols to the C-N double bond of 2H-azirine derivatives. In addition, the cytotoxic effect on cell lines derived from human lung adenocarcinoma (A549) and human embryonic kidney (HEK293) was also screened. Some azirino[2,1-b]benzo[e][1,3]oxazines 4 and 6 exhibited very good activity against the A549 cell line in vitro. Furthermore, selectivity towards cancer cell (A549) over (HEK293), and non-malignant cells (MCR-5) has been detected.
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Affiliation(s)
- Victor Carramiñana
- Department of Organic Chemistry I, Faculty of Pharmacy and Lascaray Research Center, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria, Spain
| | - Ana M Ochoa de Retana
- Department of Organic Chemistry I, Faculty of Pharmacy and Lascaray Research Center, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria, Spain
| | - Jesús M de Los Santos
- Department of Organic Chemistry I, Faculty of Pharmacy and Lascaray Research Center, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria, Spain.
| | - Francisco Palacios
- Department of Organic Chemistry I, Faculty of Pharmacy and Lascaray Research Center, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria, Spain.
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