1
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Kudo Y, Konoki K, Yotsu-Yamashita M. Mass spectrometry-guided discovery of new analogues of bicyclic phosphotriester salinipostin and evaluation of their monoacylglycerol lipase inhibitory activity. Biosci Biotechnol Biochem 2022; 86:1333-1342. [PMID: 35918181 DOI: 10.1093/bbb/zbac131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022]
Abstract
Natural products containing the highly unusual phosphotriester ring are known to be potent serine hydrolase inhibitors. The long-chain bicyclic enol-phosphotriester salinipostins (SPTs) from the marine actinomycete Salinispora have been identified as selective antimalarial agents. A potential regulatory function has been suggested for phosphotriesters based on their structural relationship with actinomycete signaling molecules and the prevalence of spt-like biosynthetic gene clusters across actinomycetes. In this study, we established a mass spectrometry-guided screening method for phosphotriesters focusing on their characteristic fragment ions. Applying this screening method to the SPT producer Salinispora tropica CNB-440, new SPT analogues (4-6) were discovered and their structures were elucidated by spectroscopic analyses. Previously known and herein-identified SPT analogues inhibited the activity of human monoacylglycerol lipase (MAGL), a key serine hydrolase in the endocannabinoid system, in the nanomolar range. Our method could be applied to the screening of phosphotriesters, potential serine hydrolase inhibitors and signaling molecules.
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Affiliation(s)
- Yuta Kudo
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, Japan.,Graduate School of Agricultural Science, Tohoku University 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, Japan
| | - Keiichi Konoki
- Graduate School of Agricultural Science, Tohoku University 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, Japan
| | - Mari Yotsu-Yamashita
- Graduate School of Agricultural Science, Tohoku University 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, Japan
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2
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Della-Felice F, de Andrade Bartolomeu A, Pilli RA. The phosphate ester group in secondary metabolites. Nat Prod Rep 2022; 39:1066-1107. [PMID: 35420073 DOI: 10.1039/d1np00078k] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: 2000 to mid-2021The phosphate ester is a versatile, widespread functional group involved in a plethora of biological activities. Its presence in secondary metabolites, however, is relatively rare compared to other functionalities and thus is part of a rather unexplored chemical space. Herein, the chemistry of secondary metabolites containing the phosphate ester group is discussed. The text emphasizes their structural diversity, biological and pharmacological profiles, and synthetic approaches employed in the phosphorylation step during total synthesis campaigns, covering the literature from 2000 to mid-2021.
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Affiliation(s)
- Franco Della-Felice
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, CEP 13083-970 Campinas, Sao Paulo, Brazil.,Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.
| | | | - Ronaldo Aloise Pilli
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, CEP 13083-970 Campinas, Sao Paulo, Brazil
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3
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Cavalier JF, Spilling CD, Durand T, Camoin L, Canaan S. Lipolytic enzymes inhibitors: A new way for antibacterial drugs discovery. Eur J Med Chem 2020; 209:112908. [PMID: 33071055 DOI: 10.1016/j.ejmech.2020.112908] [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: 09/14/2020] [Revised: 09/29/2020] [Accepted: 10/03/2020] [Indexed: 10/23/2022]
Abstract
Tuberculosis (TB) caused by Mycobacterium tuberculosis (M. tb) still remains the deadliest infectious disease worldwide with 1.5 million deaths in 2018, of which about 15% are attributed to resistant strains. Another significant example is Mycobacterium abscessus (M. abscessus), a nontuberculous mycobacteria (NTM) responsible for cutaneous and pulmonary infections, representing up to 95% of NTM infections in cystic fibrosis (CF) patients. M. abscessus is a new clinically relevant pathogen and is considered one of the most drug-resistant mycobacteria for which standardized chemotherapeutic regimens are still lacking. Together the emergence of M. tb and M. abscessus multi-drug resistant strains with ineffective and expensive therapeutics, have paved the way to the development of new classes of anti-mycobacterial agents offering additional therapeutic options. In this context, specific inhibitors of mycobacterial lipolytic enzymes represent novel and promising antibacterial molecules to address this challenging issue. The results highlighted here include a complete overview of the antibacterial activities, either in broth medium or inside infected macrophages, of two families of promising and potent anti-mycobacterial multi-target agents, i.e. oxadiazolone-core compounds (OX) and Cyclophostin & Cyclipostins analogs (CyC); the identification and biochemical validation of their effective targets (e.g., the antigen 85 complex and TesA playing key roles in mycolic acid metabolism) together with their respective crystal structures. To our knowledge, these are the first families of compounds able to target and impair replicating as well as intracellular bacteria. We are still impelled in deciphering their mode of action and finding new potential therapeutic targets against mycobacterial-related diseases.
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Affiliation(s)
- Jean-François Cavalier
- Aix-Marseille Univ., CNRS, LISM, Institut de Microbiologie de La Méditerranée FR3479, Marseille, France.
| | - Christopher D Spilling
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri, 63121, United States
| | - Thierry Durand
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Luc Camoin
- Aix-Marseille Univ., INSERM, CNRS, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, Marseille, France
| | - Stéphane Canaan
- Aix-Marseille Univ., CNRS, LISM, Institut de Microbiologie de La Méditerranée FR3479, Marseille, France.
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4
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Madani A, Ridenour JN, Martin BP, Paudel RR, Abdul Basir A, Le Moigne V, Herrmann JL, Audebert S, Camoin L, Kremer L, Spilling CD, Canaan S, Cavalier JF. Cyclipostins and Cyclophostin Analogues as Multitarget Inhibitors That Impair Growth of Mycobacterium abscessus. ACS Infect Dis 2019; 5:1597-1608. [PMID: 31299146 DOI: 10.1021/acsinfecdis.9b00172] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Twelve new Cyclophostin and Cyclipostins analogues (CyC19-30) were synthesized, thus extending our series to 38 CyCs. Their antibacterial activities were evaluated against four pathogenic mycobacteria (Mycobacterium abscessus, Mycobacterium marinum, Mycobacterium bovis BCG, and Mycobacterium tuberculosis) and two Gram negative bacteria. The CyCs displayed very low toxicity toward host cells and were only active against mycobacteria. Importantly, several CyCs were active against extracellular M. abscessus (CyC17/CyC18β/CyC25/CyC26) or intramacrophage residing mycobacteria (CyC7(α,β)/CyC8(α,β)) with minimal inhibitory concentrations (MIC50) values comparable to or better than those of amikacin or imipenem, respectively. An activity-based protein profiling combined with mass spectrometry allowed identification of the potential target enzymes of CyC17/CyC26, mostly being involved in lipid metabolism and/or in cell wall biosynthesis. Overall, these results strengthen the selective activity of the CyCs against mycobacteria, including the most drug-resistant M. abscessus, through the cumulative inhibition of a large number of Ser- and Cys-enzymes participating in key physiological processes.
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Affiliation(s)
- Abdeldjalil Madani
- Aix-Marseille Université, CNRS, LISM, Institut de Microbiologie de la Méditerranée, Marseille, France 13402 Cedex 20
| | - Jeremy N. Ridenour
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Benjamin P. Martin
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Rishi R. Paudel
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Anosha Abdul Basir
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Vincent Le Moigne
- APHP, GHU PIFO, Hôpital Raymond-Poincaré−Hôpital Ambroise-Paré, 92100 Boulogne-Billancourt, France
| | - Jean-Louis Herrmann
- APHP, GHU PIFO, Hôpital Raymond-Poincaré−Hôpital Ambroise-Paré, 92100 Boulogne-Billancourt, France
- 2I, UVSQ, INSERM UMR 1173, Université Paris-Saclay, 78035 Versailles, France
| | - Stéphane Audebert
- Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, 13273 Marseille Cedex 09, France
| | - Luc Camoin
- Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, 13273 Marseille Cedex 09, France
| | - Laurent Kremer
- Institut de Recherche en Infectiologie de Montpellier (IRIM), CNRS, UMR 9004, Université de Montpellier, 34293 Montpellier, France
- IRIM, INSERM, 34293 Montpellier, France
| | - Christopher D. Spilling
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Stéphane Canaan
- Aix-Marseille Université, CNRS, LISM, Institut de Microbiologie de la Méditerranée, Marseille, France 13402 Cedex 20
| | - Jean-François Cavalier
- Aix-Marseille Université, CNRS, LISM, Institut de Microbiologie de la Méditerranée, Marseille, France 13402 Cedex 20
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5
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Spilling CD. The Chemistry and Biology of Cyclophostin, the Cyclipostins and Related Compounds. Molecules 2019; 24:molecules24142579. [PMID: 31315184 PMCID: PMC6681047 DOI: 10.3390/molecules24142579] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/03/2019] [Accepted: 07/10/2019] [Indexed: 11/17/2022] Open
Abstract
Cyclophostin, the cyclipostins and the salinipostins are structurally related cyclic enolphosphate natural products. This mini review describes their isolation, synthesis and biological activities. In addition, the synthesis and biological activities of monocyclic enolphosphate and mono and bicyclic enolphosphonate analogs are presented.
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Affiliation(s)
- Christopher D Spilling
- Department of Chemistry & Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, USA.
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6
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Gnawali GR, Rath NP, Spilling CD. Synthesis of Phostones via the Palladium-Catalyzed Ring Opening of Epoxy Vinyl Phosphonates. J Org Chem 2019; 84:8724-8730. [PMID: 31140269 DOI: 10.1021/acs.joc.9b00905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of epoxy aldehydes with tetraethyl methylenediphosphonate gave γ,δ-epoxy vinyl phosphonates. The palladium-catalyzed addition of primary alcohols gave the monoprotected diols as single diastereoisomers. The trans- and cis-epoxides lead to opposite ( syn and anti) diastereoisomers of the addition products. The alkene of the vinyl phosphonates was subjected to hydrogenation, and the resulting saturated phosphonates underwent base-catalyzed cyclization to give phostones with a very high diastereoselectivity in the formation of the new chiral center at the phosphorus atom.
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Affiliation(s)
- Giri Raj Gnawali
- Department of Chemistry and Biochemistry , University of Missouri, St. Louis , One University Boulevard , St. Louis , Missouri 63121 , United States
| | - Nigam P Rath
- Department of Chemistry and Biochemistry , University of Missouri, St. Louis , One University Boulevard , St. Louis , Missouri 63121 , United States
| | - Christopher D Spilling
- Department of Chemistry and Biochemistry , University of Missouri, St. Louis , One University Boulevard , St. Louis , Missouri 63121 , United States
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7
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Sandridge MJ, McLarney BD, Williams CW, France S. α-Alkylidene-γ-butyrolactone Formation via Bi(OTf) 3-Catalyzed, Dehydrative, Ring-Opening Cyclizations of Cyclopropyl Carbinols: Understanding Substituent Effects and Predicting E/Z Selectivity. J Org Chem 2017; 82:10883-10897. [PMID: 28876932 DOI: 10.1021/acs.joc.7b01706] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Bi(OTf)3-catalyzed ring-opening cyclization of (hetero)aryl cyclopropyl carbinols to form α-alkylidene-γ-butyrolactones (ABLs) is reported. This transformation represents different chemoselectivity from previous reports that demonstrated formation of (hetero)aryl-fused cyclohexa-1,3-dienes upon acid-promoted cyclopropyl carbinol ring opening. ABLs are obtained in up to 89% yield with a general preference for the E-isomers. Mechanistically, Bi(OTf)3 serves as a stable and easy to handle precursor to TfOH. TfOH then catalyzes the formation of cyclopropyl carbinyl cations, which undergo ring opening, intramolecular trapping by the neighboring ester group, subsequent hydrolysis, and loss of methanol resulting in the formation of the ABLs. The nature and relative positioning of the substituents on both the carbinol and the cyclopropane determine both chemo- and stereoselective outcomes. Carbinol substituents determine the extent of cyclopropyl carbinyl cation formation. The cyclopropane donor substituents determine the overall reaction chemoselectivity. Weakly stabilizing or electron-poor donor groups provide better yields of the ABL products. In contrast, copious amounts of competing products are observed with highly stabilizing cyclopropane donor substituents. Finally, a predictive model for E/Z selectivity was developed using DFT calculations.
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Affiliation(s)
- Matthew J Sandridge
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Brett D McLarney
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Corey W Williams
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Stefan France
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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8
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Cyclipostins and Cyclophostin analogs as promising compounds in the fight against tuberculosis. Sci Rep 2017; 7:11751. [PMID: 28924204 PMCID: PMC5603573 DOI: 10.1038/s41598-017-11843-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/30/2017] [Indexed: 01/01/2023] Open
Abstract
A new class of Cyclophostin and Cyclipostins (CyC) analogs have been investigated against Mycobacterium tuberculosis H37Rv (M. tb) grown either in broth medium or inside macrophages. Our compounds displayed a diversity of action by acting either on extracellular M. tb bacterial growth only, or both intracellularly on infected macrophages as well as extracellularly on bacterial growth with very low toxicity towards host macrophages. Among the eight potential CyCs identified, CyC17 exhibited the best extracellular antitubercular activity (MIC50 = 500 nM). This compound was selected and further used in a competitive labelling/enrichment assay against the activity-based probe Desthiobiotin-FP in order to identify its putative target(s). This approach, combined with mass spectrometry, identified 23 potential candidates, most of them being serine or cysteine enzymes involved in M. tb lipid metabolism and/or in cell wall biosynthesis. Among them, Ag85A, CaeA and HsaD, have previously been reported as essential for in vitro growth of M. tb and/or survival and persistence in macrophages. Overall, our findings support the assumption that CyC17 may thus represent a novel class of multi-target inhibitor leading to the arrest of M. tb growth through a cumulative inhibition of a large number of Ser- and Cys-containing enzymes participating in important physiological processes.
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9
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Stereospecific cholinesterase inhibition by O , S -diethylphenylphosphonothioate. Bioorg Med Chem 2017; 25:3053-3058. [DOI: 10.1016/j.bmc.2017.03.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 03/25/2017] [Indexed: 11/20/2022]
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10
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Volle JN, Guillon R, Bancel F, Bekro YA, Pirat JL, Virieux D. Phosphono- and Phosphinolactones in the Life Sciences. ADVANCES IN HETEROCYCLIC CHEMISTRY 2016. [DOI: 10.1016/bs.aihch.2015.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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11
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Martin BP, Vasilieva E, Dupureur CM, Spilling CD. Synthesis and comparison of the biological activity of monocyclic phosphonate, difluorophosphonate and phosphate analogs of the natural AChE inhibitor cyclophostin. Bioorg Med Chem 2015; 23:7529-34. [DOI: 10.1016/j.bmc.2015.10.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/20/2015] [Accepted: 10/29/2015] [Indexed: 12/15/2022]
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12
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I2O5/DBU mediated direct α-phosphoryloxylation of ketones with H-phosphonates leading to α-hydroxyketone phosphates. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.07.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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New ω-ketovinyl phosphonates: inexpensive synthesis, isomerization studies and route for functionalized 1,3-butadienes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Vasilieva E, Dutta S, Malla RK, Martin BP, Spilling CD, Dupureur CM. Rat hormone sensitive lipase inhibition by cyclipostins and their analogs. Bioorg Med Chem 2015; 23:944-52. [PMID: 25678014 DOI: 10.1016/j.bmc.2015.01.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 01/05/2015] [Accepted: 01/15/2015] [Indexed: 11/15/2022]
Abstract
Cyclipostins are bicyclic lipophilic phosphate natural products. We report here that synthesized individual diastereomers of cyclipostins P and R have nanomolar IC50s toward hormone sensitive lipase (HSL). The less potent diastereomers of these compounds have 10-fold weaker IC50s. The monocyclic phosphate analog of cyclipostin P is nearly as potent as the bicyclic natural product. Bicyclic phosphonate analogs of both cyclipostins exhibit IC50s similar to those of the weaker diastereomer phosphates (about 400nM). The monocyclic phosphonate analog of cyclipostin P has similar potency. A series of monocyclic phosphonate analogs in which a hydrophobic tail extends from the lactone side of the ring are considerably poorer inhibitors, with IC50s around 50μM. Finally cyclophostin, a related natural product inhibitor of acetylcholinesterase (AChE) that lacks the hydrocarbon tail of cyclipostins, is not active against HSL. These results indicate a critical SAR for these compounds, the hydrophobic tail. The smaller lactone ring is not critical to activity, a similarity shared with cyclophostin and AChE. The HSL kinetics of inhibition for the cyclipostin P trans diastereomer were examined in detail. The reaction is irreversible with a KI of 40nM and a rate constant for inactivation of 0.2min(-1). These results are similar to those observed for cyclophostin and AChE.
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Affiliation(s)
- Elena Vasilieva
- Department of Chemistry & Biochemistry and the Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Supratik Dutta
- Department of Chemistry & Biochemistry and the Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Raj K Malla
- Department of Chemistry & Biochemistry and the Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Benjamin P Martin
- Department of Chemistry & Biochemistry and the Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Christopher D Spilling
- Department of Chemistry & Biochemistry and the Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Cynthia M Dupureur
- Department of Chemistry & Biochemistry and the Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States.
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15
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Zhao Y, Chen T, Han D, Zhao CQ, Han LB. Facile base-mediated redox transformation: an efficient strategy for the synthesis of α-acyloxyphosphoryl compounds. Org Lett 2014; 16:6152-5. [PMID: 25398049 DOI: 10.1021/ol503014f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient one-pot synthesis of α-acyloxyphosphoryl compounds from aldehydes and hydrogen phosphoryl compounds has been developed using a facile base-mediated redox strategy. This redox transformation is applicable to synthesize a wide range of valuable α-acyloxyphosphoryl compounds with high atom- and step-economic efficiency.
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Affiliation(s)
- Yalei Zhao
- †State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Tieqiao Chen
- †State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Daoqing Han
- §National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Chang-Qiu Zhao
- ‡College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Li-Biao Han
- †State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.,§National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
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16
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Elumalai K, Ali MA, Elumalai M, Eluri K, Srinivasan S. Acetylcholinesterase enzyme inhibitor activity of some novel pyrazinamide condensed 1,2,3,4-tetrahydropyrimidines. ACTA ACUST UNITED AC 2014. [PMID: 28626677 PMCID: PMC5466188 DOI: 10.1016/j.btre.2014.10.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A new series of some novel pyrazinamide condensed 1,2,3,4-tetrahydropyrimidines was prepared by reacting of N-(3-oxobutanoyl)pyrazine-2-carboxamide with urea/thiourea and appropriate aldehyde in the presence of catalytic amount of laboratory made p-toluenesulfonic acid as an efficient catalyst. Confirmation of the chemical structure of the synthesized compounds (4a–l) was substantiated by TLC, different spectral data IR, 1H NMR, mass spectra and elemental analysis. The synthesized compounds were evaluated for acetyl and butyl cholinesterase (AChE and BuChE) inhibitor activity. The titled compounds exhibited weak, moderate or high AChE and BuChE inhibitor activity. Especially, compound (4l) showed the best AChE and BuChE inhibitory activity of all the 1,2,3,4-tetrahydropyrimidine derivatives, with an IC50 value of 0.11 μM and 3.4 μM.
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Affiliation(s)
- Karthikeyan Elumalai
- New Drug Discovery Research, Department of Medicinal Chemistry, Sunrise University, Alwar, Rajasthan 301030, India.,College of Pharmacy, Sree Vidyanikethan Educational Trust, Tirupati 517102, India
| | - Mohammed Ashraf Ali
- New Drug Discovery Research, Department of Medicinal Chemistry, Sunrise University, Alwar, Rajasthan 301030, India
| | - Manogaran Elumalai
- Faculty of Pharmaceutical Sciences, UCSI University, Cheras, Kuala Lumpur 56000, Malaysia
| | - Kalpana Eluri
- Faculty of Pharmaceutical Sciences, UCSI University, Cheras, Kuala Lumpur 56000, Malaysia
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17
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Malla RK, Ridenour JN, Spilling CD. Relay cross metathesis reactions of vinylphosphonates. Beilstein J Org Chem 2014; 10:1933-41. [PMID: 25246952 PMCID: PMC4168886 DOI: 10.3762/bjoc.10.201] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 07/14/2014] [Indexed: 11/23/2022] Open
Abstract
Dimethyl (β-substituted) vinylphosphonates do not readily undergo cross metathesis reactions with Grubbs catalyst and terminal alkenes. However, the corresponding mono- or diallyl vinylphosphonate esters undergo facile cross metathesis reactions. The improved reactivity is attributed to a relay step in the cross metathesis reaction mechanism.
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Affiliation(s)
- Raj K Malla
- Department of Chemistry and Biochemistry, University of Missouri St. Louis, One University Boulevard, St. Louis, MO 63121, USA
| | - Jeremy N Ridenour
- Department of Chemistry and Biochemistry, University of Missouri St. Louis, One University Boulevard, St. Louis, MO 63121, USA
| | - Christopher D Spilling
- Department of Chemistry and Biochemistry, University of Missouri St. Louis, One University Boulevard, St. Louis, MO 63121, USA
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18
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Spilling CD, Malla RK. Synthesis of non-racemic α-hydroxyphosphonates via asymmetric phospho-aldol reaction. Top Curr Chem (Cham) 2014; 361:83-136. [PMID: 25467537 DOI: 10.1007/128_2014_583] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
It has been more than 50 years since the first phospho-aldol reactions of dialkyl phosphites were reported. These efficient P-C bond-forming reactions have become the cornerstone of methods for the synthesis of α-hydroxyphosphonates and, by numerous available substitution reactions, the synthesis of other α- and γ-substituted phosphonates and phosphonic acids. Much of the interest in α- and γ-substituted phosphonates and phosphonic acids has been stimulated by reports of their biological activity, which is often dependent upon their absolute and relative stereochemistry. In this chapter, we review diastereoselective and enantioselective additions of dialkyl phosphites to aldehydes and ketones, otherwise called the phospho-aldol, Pudovik or Abramov reactions.
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Affiliation(s)
- Christopher D Spilling
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO, 63121, USA,
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Point V, Malla RK, Carrière F, Canaan S, Spilling CD, Cavalier JF. Enantioselective Inhibition of Microbial Lipolytic Enzymes by Nonracemic Monocyclic Enolphosphonate Analogues of Cyclophostin. J Med Chem 2013; 56:4393-401. [DOI: 10.1021/jm4000787] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vanessa Point
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
| | - Raj K. Malla
- Department of Chemistry and
Biochemistry, University of Missouri−St. Louis, One University
Boulevard, St. Louis, Missouri 63121, United States
| | - Frederic Carrière
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
| | - Stéphane Canaan
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
| | - Christopher D. Spilling
- Department of Chemistry and
Biochemistry, University of Missouri−St. Louis, One University
Boulevard, St. Louis, Missouri 63121, United States
| | - Jean-François Cavalier
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
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Point V, Malla RK, Diomande S, Martin BP, Delorme V, Carriere F, Canaan S, Rath NP, Spilling CD, Cavalier JF. Synthesis and kinetic evaluation of cyclophostin and cyclipostins phosphonate analogs as selective and potent inhibitors of microbial lipases. J Med Chem 2012; 55:10204-19. [PMID: 23095026 DOI: 10.1021/jm301216x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new series of customizable diastereomeric cis- and trans-monocyclic enol-phosphonate analogs to Cyclophostin and Cyclipostins were synthesized. Their potencies and mechanisms of inhibition toward six representative lipolytic enzymes belonging to distinct lipase families were examined. With mammalian gastric and pancreatic lipases no inhibition occurred with any of the compounds tested. Conversely, Fusarium solani Cutinase and lipases from Mycobacterium tuberculosis (Rv0183 and LipY) were all fully inactivated. The best inhibitors displayed a cis conformation (H and OMe) and exhibited higher inhibitory activities than the lipase inhibitor Orlistat toward the same enzymes. Our results have revealed that chemical group at the γ-carbon of the phosphonate ring strongly impacts the inhibitory efficiency, leading to a significant improvement in selectivity toward a target lipase over another. The powerful and selective inhibition of microbial (fungal and mycobacterial) lipases suggests that these seven-membered monocyclic enol-phosphonates should provide useful leads for the development of novel and highly selective antimicrobial agents.
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Affiliation(s)
- Vanessa Point
- CNRS - Aix-Marseille Université , Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282, 31 chemin Joseph Aiguier, 13402 Marseille cedex 20, France
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Malla RK, Bandyopadhyay S, Spilling CD, Dutta S, Dupureur CM. The first total synthesis of (±)-cyclophostin and (±)-cyclipostin P: inhibitors of the serine hydrolases acetyl cholinesterase and hormone sensitive lipase. Org Lett 2011; 13:3094-7. [PMID: 21591624 DOI: 10.1021/ol200991x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclophostin, a structurally unique and potent naturally occurring acetyl cholinesterase (AChE) inhibitor, and its unnatural diastereomer were prepared in 6 steps and 15% overall yield from hydroxymethyl butyrolactone. The unnatural diastereomer of cyclophostin was converted into cyclipostin P, a potent naturally occurring hormone sensitive lipase (HSL) inhibitor, using a one pot dealkylation-alkylation process. The inhibition [IC(50)] of human AChE by cyclophostin and its diastereomer are reported, as well as constituent binding (K(I)) and reactivity (k(2)) constants.
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Affiliation(s)
- Raj K Malla
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA
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Kitson RRA, Millemaggi A, Taylor RJK. The renaissance of alpha-methylene-gamma-butyrolactones: new synthetic approaches. Angew Chem Int Ed Engl 2010; 48:9426-51. [PMID: 19938025 DOI: 10.1002/anie.200903108] [Citation(s) in RCA: 352] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The amount of research activity concerning alpha-methylene-gamma-butyrolactones and alpha-alkylidene-gamma-butyrolactones has increased dramatically in recent years. This Review summarizes the structural types, biological activities, and biosynthesis of these compounds, concentrating on publications from the past 10 years. Traditional approaches to alpha-methylene-gamma-butyrolactones and alpha-alkylidene-gamma-butyrolactones are then reviewed together with novel approaches, including those from our own research group, reported more recently.
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Affiliation(s)
- Russell R A Kitson
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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Dutta S, Malla RK, Bandyopadhyay S, Spilling CD, Dupureur CM. Synthesis and kinetic analysis of some phosphonate analogs of cyclophostin as inhibitors of human acetylcholinesterase. Bioorg Med Chem 2010; 18:2265-2274. [PMID: 20189400 DOI: 10.1016/j.bmc.2010.01.063] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Revised: 01/21/2010] [Accepted: 01/22/2010] [Indexed: 10/19/2022]
Abstract
Two new monocyclic analogs of the natural AChE inhibitor cyclophostin and two exocyclic enol phosphates were synthesized. The potencies and mechanisms of inhibition of the bicyclic and monocyclic enol phosphonates and the exocyclic enol phosphates toward human AChE are examined. One diastereoisomer of the bicyclic phosphonate exhibits an IC(50) of 3 microM. Potency is only preserved when the cyclic enol phosphonate is intact and conjugated to an ester. Kinetic analysis indicates both a binding and a slow inactivation step for all active compounds. Mass spectrometric analysis indicates that the active site Ser is indeed phosphorylated by the bicyclic phosphonate.
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Affiliation(s)
- Supratik Dutta
- Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Raj K Malla
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Saibal Bandyopadhyay
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Christopher D Spilling
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Cynthia M Dupureur
- Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
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Gledhill AC, Cosgrove NE, Nixon TD, Kilner CA, Fisher J, Kee TP. Asymmetric general base catalysis of the phospho-aldol reaction via dimeric aluminium hydroxides. Dalton Trans 2010; 39:9472-5. [DOI: 10.1039/c0dt00459f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kitson R, Millemaggi A, Taylor R. Die Renaissance der α-Methylen-γ-butyrolactone: neue Syntheseansätze. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903108] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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