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Lelis A, Skoulikas N, Papathanasopoulou M, Voreakos K, Georgiadis D. Diastereoselective Synthesis of Phosphinic Dipeptide Isosteres: Domino Chirality Transfer during a Stereocontrolled P-Michael Reaction. Org Lett 2023; 25:6623-6627. [PMID: 37669620 DOI: 10.1021/acs.orglett.3c02335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
A highly diastereoselective P-Michael addition of chiral aminophosphinic acids to achiral acrylates has been developed, leading to phosphinic dipeptide isosteres in high yields and dr of up to >50:1. The method allows for the diastereoselective preparation of target compounds without the need for chiral auxiliaries or P-chiral substrates. A possible mechanistic explanation involves a domino chirality transfer from the aminophosphinic acid to the P center, amplified by a crucial benzhydryl ester group, and then to the α-carbon.
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Affiliation(s)
- Angelos Lelis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Nikolaos Skoulikas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Mirto Papathanasopoulou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Kostas Voreakos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Dimitris Georgiadis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
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2
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Maślanka M, Tabor W, Krzyżek P, Grabowiecka A, Berlicki Ł, Mucha A. Inhibitory activity of catecholic phosphonic and phosphinic acids against Helicobacter pylori ureolysis. Eur J Med Chem 2023; 257:115528. [PMID: 37290184 DOI: 10.1016/j.ejmech.2023.115528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/22/2023] [Accepted: 05/25/2023] [Indexed: 06/10/2023]
Abstract
Catechols have been reported to be potent covalent inhibitors of ureases, and they exhibit activity by modifying cysteine residues at the entrance to enzymatic active sites. Following these principles, we designed and synthesized novel catecholic derivatives that contained carboxylate and phosphonic/phosphinic functionalities and assumed expanded specific interactions. When studying the chemical stability of the molecules, we found that their intrinsic acidity catalyzes spontaneous esterification/hydrolysis reactions in methanol or water solutions, respectively. Regarding biological activity, the most promising compound, 2-(3,4-dihydroxyphenyl)-3-phosphonopropionic acid (15), exhibited significant anti-urease potential (Ki = 2.36 μM, Sporosarcinia pasteurii urease), which was reflected in the antiureolytic effect in live Helicobacter pylori cells at a submicromolar concentration (IC50 = 0.75 μM). As illustrated by molecular modeling, this compound was bound in the active site of urease through a set of concerted electrostatic and hydrogen bond interactions. The antiureolytic activity of catecholic phosphonic acids could be specific because these compounds were chemically inert and not cytotoxic to eukaryotic cells.
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Affiliation(s)
- Marta Maślanka
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Wojciech Tabor
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Paweł Krzyżek
- Department of Microbiology, Faculty of Medicine, Wrocław Medical University, Wybrzeże L. Pasteura 1, 50-367, Wrocław, Poland
| | - Agnieszka Grabowiecka
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Łukasz Berlicki
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Artur Mucha
- Department of Bioorganic Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland.
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3
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Abdou MM, O’Neill PM, Amigues E, Matziari M. Unprecedented Convergent Synthesis of Sugar-Functionalization of Phosphinic Acids under Metal-Free Conditions. ACS OMEGA 2022; 7:21444-21453. [PMID: 35785277 PMCID: PMC9244928 DOI: 10.1021/acsomega.2c00712] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/30/2022] [Indexed: 06/12/2023]
Abstract
A novel TEA-catalyzed sugar-esterification of phosphinic acids was used as a general and efficient approach for the synthesis of a variety of phosphinates without any transition metal. The high efficiency of the current methodology and a convenient experimental procedure compensate for the moderate yields obtained. Another advantage is that the reaction tolerates different substituents attached to the phosphinic acids and the sugar moieties alongside the ease of isolation of the product.
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Affiliation(s)
- Moaz M. Abdou
- Egyptian
Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Paul M. O’Neill
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | - Eric Amigues
- Department
of Chemistry, Xi’an Jiaotong Liverpool
University, Suzhou, Jiangsu 215123, P. R. China
| | - Magdalini Matziari
- Department
of Chemistry, Xi’an Jiaotong Liverpool
University, Suzhou, Jiangsu 215123, P. R. China
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Shevchenko KV, Dmitriev ME, Vinyukov AV, Shevchenko VP, Kalashnikova IP, Nagaev IY, Ragulin VV, Myasoedov NF. Synthesis and Study of Properties of Phosphinic Pseudo-Prolylglycylproline. DOKLADY CHEMISTRY 2021. [DOI: 10.1134/s001250082102004x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Phosphinotripeptidic Inhibitors of Leucylaminopeptidases. Int J Mol Sci 2021; 22:ijms22105090. [PMID: 34065004 PMCID: PMC8151835 DOI: 10.3390/ijms22105090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 04/28/2021] [Accepted: 05/06/2021] [Indexed: 12/02/2022] Open
Abstract
Phosphinate pseudopeptide are analogs of peptides containing phosphinate moiety in a place of the amide bond. Due to this, the organophosphorus fragment resembles the tetrahedral transition state of the amide bond hydrolysis. Additionally, it is also capable of coordinating metal ions, for example, zinc or magnesium ions. These two properties of phosphinate pseudopeptides make them an ideal candidate for metal-related protease inhibitors. This research investigates the influence of additional residue in the P2 position on the inhibitory properties of phosphinopeptides. The synthetic strategy is proposed, based on retrosynthetic analysis. The N-C-P bond formation in the desired compounds is conveniently available from the three-component condensation of appropriate amino components, aldehydes, and hypophosphorous acid. One of the crucial synthetic steps is the careful selection of the protecting groups for all the functionals. Determination of the inhibitor activity of the obtained compounds has been done using UV-Vis spectroscopy and standard substrate L-Leu-p-nitroanilide toward the enzymes isolated from the porcine kidney (SsLAP, Sus scrofa Leucine aminopeptidase) and barley seeds (HvLAP, Hordeum vulgare Leucine aminopeptidase). An efficient procedure for the preparation of phosphinotripeptides has been performed. Activity test shown that introduction of additional residue into P2 position obtains the micromolar range inhibitors of SsLAP and HvLAP. Moreover, careful selection of the residue in the P2 position should improve its selectivity toward mammalian and plant leucyl aminopeptidases.
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Kokkala P, Rajeshkumar T, Mpakali A, Stratikos E, Vogiatzis KD, Georgiadis D. A Carbodiimide-Mediated P-C Bond-Forming Reaction: Mild Amidoalkylation of P-Nucleophiles by Boc-Aminals. Org Lett 2021; 23:1726-1730. [PMID: 33617265 DOI: 10.1021/acs.orglett.1c00155] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first example of a carbodiimide-mediated P-C bond-forming reaction is described. The reaction involves activation of β-carboxyethylphosphinic acids and subsequent reaction with Boc-aminals using acid-catalysis. Mechanistic experiments using 31P NMR spectroscopy and DFT calculations support the contribution of unusually reactive cyclic phosphinic/carboxylic mixed anhydrides in a reaction pathway involving ion-pair "swapping". The utility of this protocol is highlighted by the direct synthesis of Boc-protected phosphinic dipeptides, as precursors to potent Zn-aminopeptidase inhibitors.
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Affiliation(s)
- Paraskevi Kokkala
- Department of Chemistry, Laboratory of Organic Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784, Athens, Greece
| | - Thayalan Rajeshkumar
- Department of Chemistry, University of Tennessee Knoxville, Knoxville, Tennessee 37996, United States
| | - Anastasia Mpakali
- National Centre for Scientific Research Demokritos, Patriarchou Gregoriou and Neapoleos 27, Agia Paraskevi, 15341 Athens, Greece
| | - Efstratios Stratikos
- National Centre for Scientific Research Demokritos, Patriarchou Gregoriou and Neapoleos 27, Agia Paraskevi, 15341 Athens, Greece.,Department of Chemistry, Laboratory of Biochemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784, Athens, Greece
| | - Konstantinos D Vogiatzis
- Department of Chemistry, University of Tennessee Knoxville, Knoxville, Tennessee 37996, United States
| | - Dimitris Georgiadis
- Department of Chemistry, Laboratory of Organic Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784, Athens, Greece
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Alexey VV, Maxim DE, Lyudmila AA, Alexey UA, Valery SP, Kristina SN, Boris LV, Vladimir FM, Yuriy DA, Valery RV, Nikolay MF. Phosphine modification of proline-glycine-proline tripeptide and study of its neuroprotective properties. Biochem Biophys Res Commun 2021; 539:15-19. [PMID: 33412416 DOI: 10.1016/j.bbrc.2020.12.087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 12/26/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Treatment of neurodegenerative diseases, such as Parkinson's disease, Huntington's chorea, Alzheimer's disease, is one of the priority directions in modern medicine. Thus, search and production of new physiologically active substances for the treatment of neurodegenerative disorders is one of the most important tasks for organic chemistry. The approach based on the replacement of a peptide bond in a peptide molecule with a structural isostere, non-hydrolyzable methylene phosphoryl fragment makes it possible to increase the metabolic stability of peptide molecules to the destructive action of peptidases. METHODS This work is devoted to the approbation of a new synthetic approach to the production of physiologically active substances in a series of peptide-type compounds with activity by replacing the peptide bond with isosteric methylene-phosphoryl fragment with the preservation of the original amino acid sequence. RESULTS A phosphine analog of the known physiologically active tripeptide proline-glycine-proline was obtained, cytotoxicity and neuroprotective properties of the initial tripeptide and its phosphine analog were studied. CONCLUSION Preliminary biological tests have shown that the obtained phosphine analog of the proline-glycine-proline tripeptide is involved in modulating the formation of sediments in the cellular system of proteinopathy, which may indicate their potential antiaggregatory properties.
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Affiliation(s)
- Vinyukov V Alexey
- Laboratory of Superionics, Institute of Problems of Chemical Physics of RAS, Academician Semenov Avenue 1, Chernogolovka, Moscow Region, 142432, Russian Federation; Laboratory of Organophosphorous Compounds, Institute of Physiologically Active Compounds, Severniy pr. 1, Chernogolovka, Moscow Region, 142432, Russian Federation.
| | - Dmitriev E Maxim
- Laboratory of Organophosphorous Compounds, Institute of Physiologically Active Compounds, Severniy pr. 1, Chernogolovka, Moscow Region, 142432, Russian Federation
| | - Andreeva A Lyudmila
- Department of Regulatory Peptides, Institute of Molecular Genetics, Kurchatov Square 2, Moscow, 123182, Russian Federation
| | - Ustyugov A Alexey
- Biological Testing Laboratory, Institute of Physiologically Active Compounds, Severniy pr. 1, Chernogolovka, Moscow Region, 142432, Russian Federation
| | - Shevchenko P Valery
- Department of Regulatory Peptides, Institute of Molecular Genetics, Kurchatov Square 2, Moscow, 123182, Russian Federation
| | - Sidoruk N Kristina
- Laboratory of Superionics, Institute of Problems of Chemical Physics of RAS, Academician Semenov Avenue 1, Chernogolovka, Moscow Region, 142432, Russian Federation
| | - Lednev V Boris
- Information Department, Institute of Physiologically Active Compounds, Severniy pr. 1, Chernogolovka, Moscow Region, 142432, Russian Federation
| | - Freyman M Vladimir
- Laboratory of Superionics, Institute of Problems of Chemical Physics of RAS, Academician Semenov Avenue 1, Chernogolovka, Moscow Region, 142432, Russian Federation
| | - Dobrovolskiy A Yuriy
- Laboratory of Superionics, Institute of Problems of Chemical Physics of RAS, Academician Semenov Avenue 1, Chernogolovka, Moscow Region, 142432, Russian Federation
| | - Ragulin V Valery
- Laboratory of Organophosphorous Compounds, Institute of Physiologically Active Compounds, Severniy pr. 1, Chernogolovka, Moscow Region, 142432, Russian Federation
| | - Myasoedov F Nikolay
- Department of Regulatory Peptides, Institute of Molecular Genetics, Kurchatov Square 2, Moscow, 123182, Russian Federation
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8
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Dmitriev ME, Golovash SR, Borodachev AV, Ragulin VV. Mechanism of Phosphorus-Carbon Bond Formation in the Amidoalkylation of Phosphonous Carboxylic Acids. J Org Chem 2021; 86:593-600. [PMID: 33352042 DOI: 10.1021/acs.joc.0c02259] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An unusual greater reactivity of phosphonous propionic acids was found in comparison with phosphonous propionic esters in carbamate version of Kabachnik-Fields reaction. Compounds of tricoordinated phosphorus generated in situ during the amidoalkylation of hydrophosphorylic compounds in acetyl chloride/acetic anhydride mixture were found by 31P NMR analysis. A hypothesis is proposed about the generation of spirophosphoranes in situ to explain the mechanism for the formation of the phosphorus-carbon bond in the reaction under study.
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Affiliation(s)
- Maxim E Dmitriev
- Institute of Physiologically Active Substances of the Russian Academy of Sciences, Severny pr. 1, Chernoglovka, Moscow Region 142432, Russia
| | - Sofia R Golovash
- Institute of Physiologically Active Substances of the Russian Academy of Sciences, Severny pr. 1, Chernoglovka, Moscow Region 142432, Russia
| | - Alexei V Borodachev
- Institute of Physiologically Active Substances of the Russian Academy of Sciences, Severny pr. 1, Chernoglovka, Moscow Region 142432, Russia
| | - Valery V Ragulin
- Institute of Physiologically Active Substances of the Russian Academy of Sciences, Severny pr. 1, Chernoglovka, Moscow Region 142432, Russia
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9
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Vinyukov AV, Dmitriev ME, Afanas’ev AV, Ragulin VV, Andreeva LA, Myasoedov NF. Synthesis of P,N-protected phosphinic pseudoprolylglycine block. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217020189] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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12
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Vassiliou S, Tzouma E. Mapping the Pathway toward Thiophosphinic Pseudopeptides. Synthesis of Suitably Protected PG-Phe-Ψ[P(S)(OX)CH2]-Gly-OY Analogues as Thiophosphinyl Dipeptide Isosters (TDI), a Comparative Study for Selective Deprotection and Further Elongation. J Org Chem 2013; 78:10069-76. [DOI: 10.1021/jo401084v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Stamatia Vassiliou
- Laboratory
of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis,
Zografou, 15771, Athens, Greece
| | - Eirini Tzouma
- Laboratory
of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis,
Zografou, 15771, Athens, Greece
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13
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Synthesis and modifications of phosphinic dipeptide analogues. Molecules 2012; 17:13530-68. [PMID: 23154272 PMCID: PMC6268094 DOI: 10.3390/molecules171113530] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 11/09/2012] [Accepted: 11/12/2012] [Indexed: 01/01/2023] Open
Abstract
Pseudopeptides containing the phosphinate moiety (-P(O)(OH)CH2-) have been studied extensively, mainly as transition state analogue inhibitors of metalloproteases. The key synthetic aspect of their chemistry is construction of phosphinic dipeptide derivatives bearing appropriate side-chain substituents. Typically, this synthesis involves a multistep preparation of two individual building blocks, which are combined in the final step. As this methodology does not allow simple variation of the side-chain structure, many efforts have been dedicated to the development of alternative approaches. Recent achievements in this field are summarized in this review. Improved methods for the formation of the phosphinic peptide backbone, including stereoselective and multicomponent reactions, are presented. Parallel modifications leading to the structurally diversified substituents are also described. Finally, selected examples of the biomedical applications of the title compounds are given.
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Pícha J, Buděšínský M, Fiedler P, Sanda M, Jiráček J. Synthesis of α-carboxyphosphinopeptides derived from norleucine. Amino Acids 2010; 39:1265-80. [PMID: 20349321 DOI: 10.1007/s00726-010-0561-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 03/09/2010] [Indexed: 11/25/2022]
Abstract
In the present study, we describe in detail the synthesis of a relatively rare class of phosphorus compounds, α-carboxyphosphinopeptides. We prepared several norleucine-derived α-carboxyphosphinic pseudopeptides of the general formula Nle-Ψ[PO(OH)]-Gly. These compounds could have important applications as transition state-mimicking inhibitors for methionine or leucine aminopeptidases or other enzymes. For the preparation of the key α-carboxyphosphinate protected precursors, we investigated, compared and improved two different synthetic methods described in literature: the Arbuzov reaction of a silylated N-protected phosphinic acid with a bromoacetate ester and the nucleophilic addition of a mixed O-methyl S-phenyl N-protected phosphonic acid or a methyl N-protected phosphonochloridate with tert-butyl lithioacetate. We also prepared two N-Fmoc protected synthons, Fmoc-Nle-Ψ[PO(OH)]-Gly-COOH and Fmoc-Nle-Ψ[PO(OAd)]-Gly-COOH, and demonstrated that these precursors are suitable building blocks for the solid-phase synthesis of α-carboxyphosphinopeptides.
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Affiliation(s)
- Jan Pícha
- Institute of Organic Chemistry and Biochemistry, v. v. i., Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 166 10, Prague 6, Czech Republic
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Lauer-Fields J, Brew K, Whitehead JK, Li S, Hammer RP, Fields GB. Triple-helical transition state analogues: a new class of selective matrix metalloproteinase inhibitors. J Am Chem Soc 2007; 129:10408-17. [PMID: 17672455 PMCID: PMC2531068 DOI: 10.1021/ja0715849] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Alterations in activities of one family of proteases, the matrix metalloproteinases (MMPs), have been implicated in primary and metastatic tumor growth, angiogenesis, and pathological degradation of extracellular matrix (ECM) components, such as collagen and laminin. Since hydrolysis of the collagen triple-helix is one of the committed steps in ECM turnover, we envisioned modulation of collagenolytic activity as a strategy for creating selective MMP inhibitors. In the present study, a phosphinate transition state analogue has been incorporated within a triple-helical peptide template. The template sequence was based on the alpha1(V)436-450 collagen region, which is hydrolyzed at the Gly(439)-Val(440) bond selectively by MMP-2 and MMP-9. The phosphinate acts as a tetrahedral transition state analogue, which mimics the water-bound peptide bond of a protein substrate during hydrolysis. The phosphinate replaced the amide bond between Gly-Val in the P1-P1' subsites of the triple-helical peptide. Inhibition studies revealed Ki values in the low nanomolar range for MMP-2 and MMP-9 and low to middle micromolar range for MMP-8 and MMP-13. MMP-1, MMP-3, and MT1-MMP/MMP-14 were not inhibited effectively. Melting of the triple-helix resulted in a decrease in inhibitor affinity for MMP-2. The phosphinate triple-helical transition state analogue has high affinity and selectivity for the gelatinases (MMP-2 and MMP-9) and represents a new class of protease inhibitors that maximizes potential selectivity via interactions with both prime and nonprime active site subsites as well as with secondary binding sites (exosites).
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Affiliation(s)
- Janelle Lauer-Fields
- Department of Chemistry & Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431
- College of Biomedical Sciences, Florida Atlantic University, Boca Raton, FL, 33431
| | - Keith Brew
- College of Biomedical Sciences, Florida Atlantic University, Boca Raton, FL, 33431
| | - John K. Whitehead
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803
| | - Shunzi Li
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803
| | - Robert P. Hammer
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803
| | - Gregg B. Fields
- Department of Chemistry & Biochemistry, Florida Atlantic University, Boca Raton, FL, 33431
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16
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Nasopoulou M, Georgiadis D, Matziari M, Dive V, Yiotakis A. A Versatile Annulation Protocol toward Novel Constrained Phosphinic Peptidomimetics. J Org Chem 2007; 72:7222-8. [PMID: 17715974 DOI: 10.1021/jo071081l] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of a novel 3-center 2-component annulation reaction between alpha,omega-carbamoylaldehydes and suitably monoalkylated phosphinic acids is reported. Depending on the starting alpha,omega-carbamoylaldehyde, diverse phosphinic scaffolds varying in the size of their rigidity element, the nature and stereochemistry of substituents, and the participation of heteroatoms in the azacyclic ring system can be obtained in one synthetic step and in high yield. In addition, this methodology allows the synthesis of Fmoc-protected constrained aminophosphinic acids that can be easily converted to suitable pseudodipeptide building blocks compatible with the requirements of peptide synthesis on the solid phase. Finally, the careful choice of both substituents and protecting groups can provide functionally diverse, orthogonally protected constrained scaffolds for extended derivatization of the target phosphinic peptidomimetic structures.
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Affiliation(s)
- Magdalini Nasopoulou
- Department of Chemistry, Laboratory of Organic Chemistry, University of Athens, Panepistimiopolis Zografou 15771, Athens, Greece
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17
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Yang Y, Coward JK. Synthesis of p-Aminophenyl Aryl H-Phosphinic Acids and Esters via Cross-Coupling Reactions: Elaboration to Phosphinic Acid Pseudopeptide Analogues of Pteroyl Glutamic Acid and Related Antifolates. J Org Chem 2007; 72:5748-58. [PMID: 17602593 DOI: 10.1021/jo0707840] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of suitably protected p-aminophenyl H-phosphinic acids and esters from the corresponding para-substituted aryl halides has been accomplished via the Pd-catalyzed cross-coupling reaction of anilinium hypophosphite, either in the absence or presence of a tetraalkyl orthosilicate, to provide the free H-phosphinic acid or the corresponding ester, respectively. Subsequent conjugate addition of either a PIII species or phosphorus anion, generated in situ from either the free H-phosphinic acid or ester, to a 2-methylene glutaric acid ester provided the aryl phosphinic acid analogue of p-aminobenzoyl glutamic acid. Alkylation of these suitably protected p-aminophenyl phosphinic acid esters with a 6-(bromomethyl)pteridine or the corresponding (bromomethyl)pyridopyrmidine, followed by hydrolytic removal of protecting groups, provided the target aryl phosphinic acid analogues of folic acid and related antifolates. Alternatively, for the synthesis of the folate or 5-deazafolate analogues on a slightly larger scale, reductive amination with either N2-acetyl or N2-pivaloyl-6-formylpterin or the corresponding formylpyridopyrmidine and the same suitably protected p-aminophenyl phosphinic acid esters, followed by removal of protecting groups, is preferred. In the course of this research, it was observed that the nucleophilicity of both the aniline nitrogen and various PIII species derived from p-aminophenyl phosphinic acid derivatives is significantly reduced compared to that of the unsubstituted counterpart.
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Affiliation(s)
- Yonghong Yang
- Departments of Medicinal Chemistry and Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA
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18
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Nasopoulou M, Matziari M, Dive V, Yiotakis A. Chemoselective Protection of Solid-Phase Compatible Fmoc-Phosphinic Building Blocks. J Org Chem 2006; 71:9525-7. [PMID: 17137389 DOI: 10.1021/jo061535z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient four-step synthetic strategy able to fully discriminate hydroxyphosphinyl and carboxylic groups of Fmoc-phosphinic building blocks and related analogues has been developed. The proposed method applies selective acidic removal of the phenacyl (Pac) group from the hydroxyphosphinyl functionality and protection by the 1-adamantyl (Ad) group. Reductive removal of the Pac group from the carboxylic functionality leads to Fmoc-protected phosphinic pseudodipeptidic units suitable for phosphinic peptide and library development using solid-phase peptide synthesis (SPPS).
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Affiliation(s)
- Magdalini Nasopoulou
- University of Athens, Department of Chemistry, Laboratory of Organic Chemistry, Panepistimiopolis Zografou 15771, Athens, Greece
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19
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Palacios F, de Retana AMO, Alonso JM. Reaction of 2H-azirine phosphine oxide and -phosphonates with nucleophiles. Stereoselective Synthesis of functionalized aziridines and alpha- and beta-aminophosphorus derivatives. J Org Chem 2006; 70:8895-901. [PMID: 16238324 DOI: 10.1021/jo051404i] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A simple and efficient stereoselective synthesis of aziridine-2-phosphonate 3, and -phosphine oxide 5 by diastereoselective addition of Grignard reagents to 2H-azirine phosphonate 1 and -phosphine oxide 4 is reported. Similarly, the addition of heterocyclic amines and benzenethiol to aziridines 1 and 4 yielded functionalized aziridines 10, 11, and 18. These aziridines are used as intermediates for the regioselective synthesis of beta-aminophosphine oxides 6 and beta-aminophosphonates 7, as well as alpha- aminophosphonates 8. Phenylsulfenyl-substituted alpha-aminophosphorus derivatives 15 and 19 are obtained directly from benzenethiol and 2H-azirine phosphonates 1 and -phosphine oxides 4.
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Affiliation(s)
- Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Vitoria, Spain.
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20
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Palacios F, Aparicio D, López Y, de los Santos JM. Synthesis of functionalized α-amino-phosphine oxides and -phosphonates by addition of amines and aminoesters to 4-phosphinyl- and 4-phosphonyl-1,2-diaza-1,3-butadienes. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.01.081] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Vanderhoydonck B, Stevens CV. Conjugate Addition to 1-Phosphono-2-aza-1,3-butadienes: Synthesis of Phosphonylated γ-Lactams. J Org Chem 2004; 70:191-8. [PMID: 15624922 DOI: 10.1021/jo0488661] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Several 1-phosphono-2-aza-1,3-butadienes, 1 and 13-20, were evaluated in the reaction with different enolate-type nucleophiles to induce addition at the 1- or the 4-position of the azadiene. 1-Phosphono-2-azadienes 1 react with sodium malonate at the 1-position, leading to the formation of bisenamines 12 after elimination of the phosphonate moiety. On the contrary, sodium malonate adds at the 4-position of 1-aryl-1-phosphono-2-azadienes 14-19 when the azadienes bear a halogenated phenyl substituent, and the resulting addition products 21-26 are easily transformed into the corresponding phosphonylated gamma-lactams 35-40. The regioselectivity of the addition is explained by reversal of polarization of the azadiene due to the electron-withdrawing character of the halogenated phenyl substituents.
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Affiliation(s)
- Bart Vanderhoydonck
- Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Ghent, Belgium
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22
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Palacios F, Ochoa de Retana AM, Gil JI, Alonso JM. Regioselective synthesis of 4- and 5-oxazole-phosphine oxides and -phosphonates from 2H-azirines and acyl chlorides. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.07.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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23
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Addition of amine derivatives to phosphorylated 1,2-diaza-1,3-butadienes. Synthesis of α-aminophosphonates. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.192] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Palacios F, de Retana AMO, de Marigorta EM, Rodriguez M, Pagalday J. Aza-Wittig reaction of N-phosphorylalkyl phosphazenes with carbonyl compounds and phenylisocyanate. Synthesis of 4-amino-3-phosphoryl-2-azadienes and pyrazine-phosphonates. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00337-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Palacios F, Aparicio D, Ochoa de Retana AM, de los Santos JM, Gil JI, López de Munain R. Asymmetric synthesis of 2H-aziridine phosphonates, and α- or β-aminophosphonates from enantiomerically enriched 2H-azirines. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0957-4166(03)00089-2] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Synthesis of optically active oxazoles from phosphorylated 2H-azirines and N-protected amino acids or peptides. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00686-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Palacios F, Aparicio D, Ochoa De Retana AM, de los Santos JM, Gil JI, Alonso JM. Asymmetric synthesis of 2H-azirines derived from phosphine oxides using solid-supported amines. Ring opening of azirines with carboxylic acids. J Org Chem 2002; 67:7283-8. [PMID: 12375955 DOI: 10.1021/jo025995d] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A simple and efficient asymmetric synthesis of 2H-azirine-2-phosphine oxides 3 is described. The key step is a solid-phase bound achiral or chiral amine-mediated Neber reaction of beta-ketoxime tosylates derived from phosphine oxides 1. Reaction of 2H-azirines 3 and 11 with carboxylic acids 4 gives phosphorylated ketamides 5 and 12. Ring closure of ketamides 5 and 12 with triphenylphosphine and hexachloroethane in the presence of triethylamine leads to the formation of phosphorylated oxazoles 8 and 13.
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Affiliation(s)
- Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia, Universidad del País Vasco, Apartado 450, 01080 Vitoria, Spain.
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28
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Kende AS, Dong HQ, Liu X, Ebetino FH. A useful synthesis of the Phe-Arg phosphinic acid dipeptide isostere. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00957-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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