1
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Siutkina A, Kalinina S, Liu R, Heitman LH, Junker A, Daniliuc CG, Kalinin DV. Microwave-Assisted Synthesis, Structure, and Preliminary Biological Evaluation of Novel 6-Methoxy-5,6-dihydro-5-azapurines. ACS OMEGA 2023; 8:14097-14112. [PMID: 37091407 PMCID: PMC10116508 DOI: 10.1021/acsomega.3c00765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 03/10/2023] [Indexed: 05/03/2023]
Abstract
We herein disclose the microwave-assisted synthesis of previously unreported 6-methoxy-5,6-dihydro-5-azapurines, whose purine-like scaffold is promising for drug discovery. The method is simple, fast, and relies on easily accessible reagents such as trimethyl orthoformate, acetic acid, and aminotriazole-derived N,N'-disubstituted formamidines. The preliminary biological evaluation revealed that selected representatives of synthesized 6-methoxy-5,6-dihydro-5-azapurines dose-dependently reduce the viability of HepG2 and A549 cancer cells having little to no influence on five tested purinergic receptors.
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Affiliation(s)
- Alena
I. Siutkina
- Institute
of Pharmaceutical and Medicinal Chemistry, University of Münster, 48149 Münster, Germany
| | - Svetlana Kalinina
- Institute
of Food Chemistry, University of Münster, 48149 Münster, Germany
| | - Rongfang Liu
- Leiden
Academic Centre for Drug Research (LACDR), Division of Drug Discovery
and Safety, Leiden University, 2333 CC Leiden, The Netherlands
| | - Laura H. Heitman
- Leiden
Academic Centre for Drug Research (LACDR), Division of Drug Discovery
and Safety, Leiden University, 2333 CC Leiden, The Netherlands
| | - Anna Junker
- European
Institute for Molecular Imaging (EIMI), University of Münster, 48149 Münster, Germany
| | | | - Dmitrii V. Kalinin
- Institute
of Pharmaceutical and Medicinal Chemistry, University of Münster, 48149 Münster, Germany
- . Tel.: +49-2-51-83-33372
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2
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Rohrbach S, Šiaučiulis M, Chisholm G, Pirvan PA, Saleeb M, Mehr SHM, Trushina E, Leonov AI, Keenan G, Khan A, Hammer A, Cronin L. Digitization and validation of a chemical synthesis literature database in the ChemPU. Science 2022; 377:172-180. [DOI: 10.1126/science.abo0058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Despite huge potential, automation of synthetic chemistry has only made incremental progress over the past few decades. We present an automatically executable chemical reaction database of 100 molecules representative of the range of reactions found in contemporary organic synthesis. These reactions include transition metal–catalyzed coupling reactions, heterocycle formations, functional group interconversions, and multicomponent reactions. The chemical reaction codes or χDLs for the reactions have been stored in a database for version control, validation, collaboration, and data mining. Of these syntheses, more than 50 entries from the database have been downloaded and robotically run in seven modular ChemPU’s with yields and purities comparable to those achieved by an expert chemist. We also demonstrate the automatic purification of a range of compounds using a chromatography module seamlessly coupled to the platform and programmed with the same language.
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Affiliation(s)
- Simon Rohrbach
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Mindaugas Šiaučiulis
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Greig Chisholm
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Petrisor-Alin Pirvan
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Michael Saleeb
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - S. Hessam M. Mehr
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Ekaterina Trushina
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Artem I. Leonov
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Graham Keenan
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Aamir Khan
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Alexander Hammer
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Leroy Cronin
- School of Chemistry, the University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
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3
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Fedinchyk A, Herasymchuk M, Smirnov VO, Melnykov KP, Yarmoliuk DV, Kyrylchuk AA, Grygorenko OO. Fluorine‐containing sp³‐Enriched Building Blocks for the Multigram Synthesis of Fluorinated Pyrazoles and Pyrimidines with (Hetero)aliphatic Substituents. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Kostiantyn P. Melnykov
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Chemical Faculty UKRAINE
| | | | - Andrii A. Kyrylchuk
- Institute of Organic Chemistry National Academy of Sciences of Ukraine: Institut organicnoi himii Nacional'na akademia nauk Ukraini Department of Physico-Chemical Methods of Investigation UKRAINE
| | - Oleksandr O Grygorenko
- Taras Shevchenko National University of Kyiv: Kiivs'kij nacional'nij universitet imeni Tarasa Sevcenka Chemical Faculty UKRAINE
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4
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Pereira Moreira B, Weber MHW, Haeberlein S, Mokosch AS, Spengler B, Grevelding CG, Falcone FH. Drug Repurposing and De Novo Drug Discovery of Protein Kinase Inhibitors as New Drugs against Schistosomiasis. Molecules 2022; 27:molecules27041414. [PMID: 35209202 PMCID: PMC8879451 DOI: 10.3390/molecules27041414] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/09/2022] [Accepted: 02/16/2022] [Indexed: 02/01/2023] Open
Abstract
Schistosomiasis is a neglected tropical disease affecting more than 200 million people worldwide. Chemotherapy relies on one single drug, praziquantel, which is safe but ineffective at killing larval stages of this parasite. Furthermore, concerns have been expressed about the rise in resistance against this drug. In the absence of an antischistosomal vaccine, it is, therefore, necessary to develop new drugs against the different species of schistosomes. Protein kinases are important molecules involved in key cellular processes such as signaling, growth, and differentiation. The kinome of schistosomes has been studied and the suitability of schistosomal protein kinases as targets demonstrated by RNA interference studies. Although protein kinase inhibitors are mostly used in cancer therapy, e.g., for the treatment of chronic myeloid leukemia or melanoma, they are now being increasingly explored for the treatment of non-oncological conditions, including schistosomiasis. Here, we discuss the various approaches including screening of natural and synthetic compounds, de novo drug development, and drug repurposing in the context of the search for protein kinase inhibitors against schistosomiasis. We discuss the status quo of the development of kinase inhibitors against schistosomal serine/threonine kinases such as polo-like kinases (PLKs) and mitogen-activated protein kinases (MAP kinases), as well as protein tyrosine kinases (PTKs).
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Affiliation(s)
- Bernardo Pereira Moreira
- Biomedical Research Center Seltersberg (BFS), Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany; (B.P.M.); (M.H.W.W.); (S.H.); (C.G.G.)
| | - Michael H. W. Weber
- Biomedical Research Center Seltersberg (BFS), Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany; (B.P.M.); (M.H.W.W.); (S.H.); (C.G.G.)
| | - Simone Haeberlein
- Biomedical Research Center Seltersberg (BFS), Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany; (B.P.M.); (M.H.W.W.); (S.H.); (C.G.G.)
| | - Annika S. Mokosch
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (A.S.M.); (B.S.)
| | - Bernhard Spengler
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (A.S.M.); (B.S.)
| | - Christoph G. Grevelding
- Biomedical Research Center Seltersberg (BFS), Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany; (B.P.M.); (M.H.W.W.); (S.H.); (C.G.G.)
| | - Franco H. Falcone
- Biomedical Research Center Seltersberg (BFS), Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany; (B.P.M.); (M.H.W.W.); (S.H.); (C.G.G.)
- Correspondence:
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5
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Grygorenko OO, Volochnyuk DM, Vashchenko BV. Emerging Building Blocks for Medicinal Chemistry: Recent Synthetic Advances. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100857] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Oleksandr O. Grygorenko
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Dmitriy M. Volochnyuk
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Street 5 Kyiv 02094 Ukraine
| | - Bohdan V. Vashchenko
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
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6
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Hamissa MF, Niederhafner P, Šafařík M, Telus M, Kolářová L, Koutná L, Šestáková H, Souček R, Šebestík J. Total synthesis of inubosin B. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Khan P, Queen A, Mohammad T, Khan NS, Hafeez ZB, Hassan MI, Ali S. Identification of α-Mangostin as a Potential Inhibitor of Microtubule Affinity Regulating Kinase 4. JOURNAL OF NATURAL PRODUCTS 2019; 82:2252-2261. [PMID: 31343173 DOI: 10.1021/acs.jnatprod.9b00372] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Microtubule affinity regulating kinase 4 (MARK4) is a potential drug target for neuronal disorders and several types of cancers. Filtration of naturally occurring compound libraries using high-throughput screening and enzyme assay suggest α-mangostin is a potential inhibitor of MARK4. Structure-based docking and 100 ns molecular dynamics simulation revealed that the binding of α-mangostin stabilizes the MARK4 structure. Enzyme inhibition and binding studies showed that α-mangostin inhibited MARK4 in the submicromolar range with IC50 = 1.47 μM and binding constant (Ka) 5.2 × 107 M-1. Cell-based studies suggested that α-mangostin inhibited the cell viability (MCF-7 and HepG2), induced apoptosis, arrested the cell cycle in the G0/G1 phase, and reduced tau-phosphorylation. This study implicates MARK4 as a new target of α-mangostin, adding an additional lead molecule to the anticancer repertoire.
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Affiliation(s)
- Parvez Khan
- Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi 110025 , India
| | - Aarfa Queen
- Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi 110025 , India
- Department of Chemistry , Jamia Millia Islamia , Jamia Nagar , New Delhi 110025 , India
| | - Taj Mohammad
- Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi 110025 , India
| | - Nashrah Sharif Khan
- Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi 110025 , India
| | - Zubair Bin Hafeez
- Department of Biosciences , Jamia Millia Islamia , Jamia Nagar , New Delhi 110025 , India
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi 110025 , India
| | - Sher Ali
- Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi 110025 , India
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8
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Bharate SS, Mignani S, Vishwakarma RA. Why Are the Majority of Active Compounds in the CNS Domain Natural Products? A Critical Analysis. J Med Chem 2018; 61:10345-10374. [PMID: 29989814 DOI: 10.1021/acs.jmedchem.7b01922] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Small-molecule natural products (NPs) have a long and successful track record of providing first-in-class drugs and pharmacophore (scaffolds) in all therapeutic areas, serving as a bridge between modern and traditional medicine. This trajectory has been remarkably successful in three key areas of modern therapeutics: cancers, infections, and CNS diseases. Beginning with the discovery of morphine 200 years ago, natural products have remained the primary source of new drugs/scaffolds for CNS diseases. In this perspective, we address the question: why are the majority of active compounds in the CNS domain natural products? Our analysis indicates that ∼84% approved drugs for CNS diseases are NPs or NP-inspired, and interestingly, 20 natural products provided more than 400 clinically approved CNS drugs. We have discussed unique physicochemical properties of NPs and NP-inspired vis-à-vis synthetic drugs, isoform selectivity, and evolutionary relationship, providing a rationale for increasing focus on natural product driven discovery for next-generation drugs for neurodegenerative diseases.
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Affiliation(s)
- Sonali S Bharate
- Preformulation Laboratory, PK-PD Toxicology and Formulation Division , CSIR-Indian Institute of Integrative Medicine , Canal Road , Jammu 180001 , India
| | - Serge Mignani
- UMR 860, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologique , Université Paris Descartes, PRES Sorbonne Paris Cité, CNRS , 45 rue des Saints Pères , 75006 Paris , France.,CQM-Centro de Química da Madeira, MMRG , Universidade da Madeira , Campus da Penteada , 9020-105 Funchal , Portugal.,Medicinal Chemistry Division , CSIR-Indian Institute of Integrative Medicine , Canal Road , Jammu 180001 , India
| | - Ram A Vishwakarma
- Medicinal Chemistry Division , CSIR-Indian Institute of Integrative Medicine , Canal Road , Jammu 180001 , India
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9
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Guo H, Benndorf R, König S, Leichnitz D, Weigel C, Peschel G, Berthel P, Kaiser M, Steinbeck C, Werz O, Poulsen M, Beemelmanns C. Expanding the Rubterolone Family: Intrinsic Reactivity and Directed Diversification of PKS-derived Pyrans. Chemistry 2018; 24:11319-11324. [PMID: 29846024 DOI: 10.1002/chem.201802066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/26/2018] [Indexed: 12/20/2022]
Abstract
We characterized two key biosynthetic intermediates of the intriguing rubterolone family (tropolone alkaloids) that contain a highly reactive pyran moiety (in equilibrium with the hydrolyzed 1,5-dione form) and undergo spontaneous pyridine formation in the presence of primary amines. We exploited the intrinsic reactivity of the pyran moiety and isolated several new rubterolone derivatives, two of which contain a unique thiazolidine moiety. Three rubterolone derivatives were chemically modified with fluorescence and biotin tags using peptide coupling and click reaction. Overall, eight derivatives were fully characterized by HRMS/MS and 1D and 2D NMR spectroscopy and their antimicrobial, cytotoxic, anti-inflammatory and antiparasitic activities evaluated.
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Affiliation(s)
- Huijuan Guo
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - René Benndorf
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Stefanie König
- Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Daniel Leichnitz
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Christiane Weigel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Gundela Peschel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Patrick Berthel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute, Parasite Chemotherapy, Socinstraße 57, 4002, Basel, Switzerland.,University of Basel, Petersplatz 1, 4003, Basel, Switzerland
| | - Christoph Steinbeck
- Institute for Analytical Chemistry, Friedrich-Schiller-University Jena, Lessingstr. 8, 07743, Jena, Germany
| | - Oliver Werz
- Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Michael Poulsen
- Centre for Social Evolution, University of Copenhagen, 2100, Copenhagen East, Denmark
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
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10
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Kaempferol mitigates Endoplasmic Reticulum Stress Induced Cell Death by targeting caspase 3/7. Sci Rep 2018; 8:2189. [PMID: 29391535 PMCID: PMC5794799 DOI: 10.1038/s41598-018-20499-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 01/17/2018] [Indexed: 12/12/2022] Open
Abstract
The Endoplasmic Reticulum (ER) plays a fundamental role in executing multiple cellular processes required for normal cellular function. Accumulation of misfolded/unfolded proteins in the ER triggers ER stress which contributes to progression of multiple diseases including neurodegenerative disorders. Recent reports have shown that ER stress inhibition could provide positive response against neuronal injury, ischemia and obesity in in vivo models. Our search towards finding an ER stress inhibitor has led to the functional discovery of kaempferol, a phytoestrogen possessing ER stress inhibitory activity in cultured mammalian cells. We have shown that kaempferol pre-incubation significantly inhibits the expression of GRP78 (a chaperone) and CHOP (ER stress associated pro-apoptotic transcription factor) under stressed condition. Also, our investigation in the inhibitory specificity of kaempferol has revealed that it inhibits cell death induced by diverse stimuli. Further study on exploring the molecular mechanism implied that kaempferol renders protection by targeting caspases. Both the in silico docking and in vitro assay using recombinant caspase-3 enzyme confirmed the binding of kaempferol to caspases, through an allosteric mode of competitive inhibition. Altogether, we have demonstrated the ability of kaempferol to alleviate ER stress in in vitro model.
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11
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Schütznerová E, Oliver AG, Slough GA, Krchňák V. Traceless Solid-Phase Synthesis of Fused Chiral Macrocycles via Conformational Constraint-Assisted Cyclic Iminium Formation. Chemistry 2017; 23:12876-12885. [DOI: 10.1002/chem.201702461] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Eva Schütznerová
- Institute of Molecular and Translation Medicine; Hněvotínská 5 Olomouc 779 00 Czech Republic
| | - Allen G. Oliver
- Department of Organic Chemistry and Biochemistry; University of Notre Dame; Notre Dame IN 46556 USA
| | - Greg A. Slough
- Chemistry Department; Kalamazoo College; 1200 Academy St. Kalamazoo MI 49006 USA
| | - Viktor Krchňák
- Department of Organic Chemistry; Palacký University; 17. listopadu 12 771 46 Olomouc Czech Republic
- Department of Organic Chemistry and Biochemistry; University of Notre Dame; Notre Dame IN 46556 USA
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12
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Kusampally U, Pagadala R, Kamatala CR. Metal free Lewis acid promoted one-pot synthesis of 14-aryl-14H dibenzo [a,j] xanthenes and their simple biological evolution. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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13
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Gaur AS, Bhardwaj A, Sharma A, John L, Vivek MR, Tripathi N, Bharatam PV, Kumar R, Janardhan S, Mori A, Banerji A, Lynn AM, Hemrom AJ, Passi A, Singh A, Kumar A, Muvva C, Madhuri C, Choudhury C, Kumar DA, Pandit D, Bharti DR, Kumar D, Singam ERA, Raghava GPS, Sailaja H, Jangra H, Raithatha K, Tanneeru K, Chaudhary K, Karthikeyan M, Prasanthi M, Kumar N, Yedukondalu N, Rajput NK, Saranya PS, Narang P, Dutta P, Krishnan RV, Sharma R, Srinithi R, Mishra R, Hemasri S, Singh S, Venkatesan S, Kumar S, Jaleel U, Khedkar V, Joshi Y, Sastry GN. Assessing therapeutic potential of molecules: molecular property diagnostic suite for tuberculosis $$(\mathbf{MPDS}^{\mathbf{TB}})$$ ( MPDS TB ). J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1268-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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14
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4-Nitro styrylquinoline is an antimalarial inhibiting multiple stages of Plasmodium falciparum asexual life cycle. INTERNATIONAL JOURNAL FOR PARASITOLOGY-DRUGS AND DRUG RESISTANCE 2017; 7:120-129. [PMID: 28285258 PMCID: PMC5350499 DOI: 10.1016/j.ijpddr.2017.02.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 01/07/2023]
Abstract
Drugs against malaria are losing their effectiveness because of emerging drug resistance. This underscores the need for novel therapeutic options for malaria with mechanism of actions distinct from current antimalarials. To identify novel pharmacophores against malaria we have screened compounds containing structural features of natural products that are pharmacologically relevant. This screening has identified a 4-nitro styrylquinoline (SQ) compound with submicromolar antiplasmodial activity and excellent selectivity. SQ exhibits a cellular action distinct from current antimalarials, acting early on malaria parasite's intraerythrocytic life cycle including merozoite invasion. The compound is a fast-acting parasitocidal agent and also exhibits curative property in the rodent malaria model when administered orally. In this report, we describe the synthesis, preliminary structure-function analysis, and the parasite developmental stage specific action of the SQ scaffold.
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15
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Huang YW, Frontier AJ. Nazarov Cyclization/Internal Redox Cyclization Sequence for the Synthesis of N-Heterocyclic Bridged Ring Systems. Org Lett 2016; 18:4896-4899. [DOI: 10.1021/acs.orglett.6b02369] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yu-Wen Huang
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
| | - Alison J. Frontier
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
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16
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Spallarossa M, Banfi L, Basso A, Moni L, Riva R. Access to Polycyclic Alkaloid-Like Structures by Coupling the Passerini and Ugi Reactions with Two Sequential Metal-Catalyzed Cyclizations. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600638] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Martina Spallarossa
- Department of Chemistry and Industrial Chemistry; University of Genova; via Dodecaneso 31 I-16146 Genova Italy
| | - Luca Banfi
- Department of Chemistry and Industrial Chemistry; University of Genova; via Dodecaneso 31 I-16146 Genova Italy
| | - Andrea Basso
- Department of Chemistry and Industrial Chemistry; University of Genova; via Dodecaneso 31 I-16146 Genova Italy
| | - Lisa Moni
- Department of Chemistry and Industrial Chemistry; University of Genova; via Dodecaneso 31 I-16146 Genova Italy
| | - Renata Riva
- Department of Chemistry and Industrial Chemistry; University of Genova; via Dodecaneso 31 I-16146 Genova Italy
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17
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Schneider N, Lowe DM, Sayle RA, Tarselli MA, Landrum GA. Big Data from Pharmaceutical Patents: A Computational Analysis of Medicinal Chemists’ Bread and Butter. J Med Chem 2016; 59:4385-402. [DOI: 10.1021/acs.jmedchem.6b00153] [Citation(s) in RCA: 225] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Nadine Schneider
- Novartis Institutes
for BioMedical Research, Novartis Pharma AG, Novartis Campus, 4002 Basel, Switzerland
| | - Daniel M. Lowe
- NextMove Software Ltd., Innovation
Centre, Unit 23, Science Park, Milton Road, Cambridge CB4 0EY, U.K
| | - Roger A. Sayle
- NextMove Software Ltd., Innovation
Centre, Unit 23, Science Park, Milton Road, Cambridge CB4 0EY, U.K
| | - Michael A. Tarselli
- Novartis Institutes for BioMedical Research, 186 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Gregory A. Landrum
- Novartis Institutes
for BioMedical Research, Novartis Pharma AG, Novartis Campus, 4002 Basel, Switzerland
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18
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19
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Gonçalves BMF, Salvador JAR, Marín S, Cascante M. Synthesis and anticancer activity of novel fluorinated asiatic acid derivatives. Eur J Med Chem 2016; 114:101-17. [PMID: 26974379 DOI: 10.1016/j.ejmech.2016.02.057] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 01/26/2016] [Accepted: 02/24/2016] [Indexed: 01/04/2023]
Abstract
A series of novel fluorinated Asiatic Acid (AA) derivatives were successfully synthesized, tested for their antiproliferative activity against HeLa and HT-29 cell lines, and their structure activity relationships were evaluated. The great majority of fluorinated derivatives showed stronger antiproliferative activity than AA in a concentration dependent manner. The most active compounds have a pentameric A-ring containing an α,β-unsaturated carbonyl group. The compounds with better cytotoxic activity were then evaluated against MCF-7, Jurkat, PC-3, A375, MIA PaCa-2 and BJ cell lines. Derivative 14 proved to be the most active compound among all tested derivatives and its mechanism of action was further investigated in HeLa cell line. The results showed that compound 14 induced cell cycle arrest in G0/G1 stage as a consequence of up-regulation of p21(cip1/waf1) and p27(kip1) and down-regulation of cyclin D3 and Cyclin E. Furthermore, compound 14 was found to induce caspase driven-apoptosis with activation of caspases-8 and caspase-3 and the cleavage of PARP. The cleavage of Bid into t-Bid, the up-regulation of Bax and the down-regulation of Bcl-2 were also observed after treatment of HeLa cells with compound 14. Taken together, these mechanistic studies revealed the involvement of extrinsic and intrinsic pathways in the apoptotic process induced by compound 14. Importantly, the antiproliferative activity of this compound on the non-tumor BJ human fibroblast cell line is weaker than in the tested cancer cell lines. The enhanced potency (between 45 and 90-fold more active than AA in a panel of cancer cell lines) and selectivity of this new AA derivative warrant further preclinical evaluation.
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Affiliation(s)
- Bruno M F Gonçalves
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Coimbra, 3000-548, Coimbra, Portugal; Center for Neuroscience and Cell Biology, Coimbra, Portugal
| | - Jorge A R Salvador
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Coimbra, 3000-548, Coimbra, Portugal; Center for Neuroscience and Cell Biology, Coimbra, Portugal.
| | - Silvia Marín
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Institute of Biomedicine of University of Barcelona, Diagonal 643, 08028 Barcelona, Spain; Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit to CSIC, Barcelona, Spain
| | - Marta Cascante
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Institute of Biomedicine of University of Barcelona, Diagonal 643, 08028 Barcelona, Spain; Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit to CSIC, Barcelona, Spain.
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Roberts BF, Iyamu ID, Lee S, Lee E, Ayong L, Kyle DE, Yuan Y, Manetsch R, Chakrabarti D. Spirocyclic chromanes exhibit antiplasmodial activities and inhibit all intraerythrocytic life cycle stages. INTERNATIONAL JOURNAL FOR PARASITOLOGY-DRUGS AND DRUG RESISTANCE 2016; 6:85-92. [PMID: 27054067 PMCID: PMC4805781 DOI: 10.1016/j.ijpddr.2016.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/28/2016] [Accepted: 02/09/2016] [Indexed: 11/27/2022]
Abstract
We screened a collection of synthetic compounds consisting of natural-product-like substructural motifs to identify a spirocyclic chromane as a novel antiplasmodial pharmacophore using an unbiased cell-based assay. The most active spirocyclic compound UCF 201 exhibits a 50% effective concentration (EC50) of 350 nM against the chloroquine-resistant Dd2 strain and a selectivity over 50 using human liver HepG2 cells. Our analyses of physicochemical properties of UCF 201 showed that it is in compliance with Lipinski's parameters and has an acceptable physicochemical profile. We have performed a limited structure-activity-relationship study with commercially available chromanes preserving the spirocyclic motif. Our evaluation of stage specificities of UCF 201 indicated that the compound is early-acting in blocking parasite development at ring, trophozoite and schizont stages of development as well as merozoite invasion. SPC is an attractive lead candidate scaffold because of its ability to act on all stages of parasite's aexual life cycle unlike current antimalarials. SPC is a novel antiplasmodial scaffold. SPC has an EC50 of 350 nM against chloroquine-resistant parasite and is selective. SPC inhibits all stages of parasite growth in erythrocytes.
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Affiliation(s)
- Bracken F Roberts
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Iredia D Iyamu
- Department of Chemistry and Chemical Biology and Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Sukjun Lee
- Institut Pasteur Korea, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Eunyoung Lee
- Institut Pasteur Korea, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Lawrence Ayong
- Institut Pasteur Korea, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Dennis E Kyle
- Department of Global Health, College of Public Health, University of South Florida, Tampa, FL, USA
| | - Yu Yuan
- Department of Chemistry, University of Central Florida, Orlando, FL, USA
| | - Roman Manetsch
- Department of Chemistry and Chemical Biology and Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Debopam Chakrabarti
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA.
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Egieyeh SA, Syce J, Malan SF, Christoffels A. Prioritization of anti-malarial hits from nature: chemo-informatic profiling of natural products with in vitro antiplasmodial activities and currently registered anti-malarial drugs. Malar J 2016; 15:50. [PMID: 26823078 PMCID: PMC4731946 DOI: 10.1186/s12936-016-1087-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 01/09/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND A large number of natural products have shown in vitro antiplasmodial activities. Early identification and prioritization of these natural products with potential for novel mechanism of action, desirable pharmacokinetics and likelihood for development into drugs is advantageous. Chemo-informatic profiling of these natural products were conducted and compared to currently registered anti-malarial drugs (CRAD). METHODS Natural products with in vitro antiplasmodial activities (NAA) were compiled from various sources. These natural products were sub-divided into four groups based on inhibitory concentration (IC50). Key molecular descriptors and physicochemical properties were computed for these compounds and analysis of variance used to assess statistical significance amongst the sets of compounds. Molecular similarity analysis, estimation of drug-likeness, in silico pharmacokinetic profiling, and exploration of structure-activity landscape were also carried out on these sets of compounds. RESULTS A total of 1040 natural products were selected and a total of 13 molecular descriptors were analysed. Significant differences were observed among the sub-groups of NAA and CRAD for at least 11 of the molecular descriptors, including number of hydrogen bond donors and acceptors, molecular weight, polar and hydrophobic surface areas, chiral centres, oxygen and nitrogen atoms, and shape index. The remaining molecular descriptors, including clogP, number of rotatable bonds and number of aromatic rings, did not show any significant difference when comparing the two compound sets. Molecular similarity and chemical space analysis identified natural products that were structurally diverse from CRAD. Prediction of the pharmacokinetic properties and drug-likeness of these natural products identified over 50% with desirable drug-like properties. Nearly 70% of all natural products were identified as potentially promiscuous compounds. Structure-activity landscape analysis highlighted compound pairs that form 'activity cliffs'. In all, prioritization strategies for the NAA were proposed. CONCLUSIONS Chemo-informatic profiling of NAA and CRAD have produced a wealth of information that may guide decisions and facilitate anti-malarial drug development from natural products. Articulation of the information provided within an interactive data-mining environment led to a prioritized list of NAA.
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Affiliation(s)
- Samuel Ayodele Egieyeh
- South African Medial Research Council Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Bellville, Cape Town, South Africa. .,School of Pharmacy, University of the Western Cape, Bellville, Cape Town, South Africa.
| | - James Syce
- School of Pharmacy, University of the Western Cape, Bellville, Cape Town, South Africa.
| | - Sarel F Malan
- School of Pharmacy, University of the Western Cape, Bellville, Cape Town, South Africa.
| | - Alan Christoffels
- South African Medial Research Council Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Bellville, Cape Town, South Africa.
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A. Elnakady Y, Chatterjee I, Bischoff M, Rohde M, Josten M, Sahl HG, Herrmann M, Müller R. Investigations to the Antibacterial Mechanism of Action of Kendomycin. PLoS One 2016; 11:e0146165. [PMID: 26795276 PMCID: PMC4721675 DOI: 10.1371/journal.pone.0146165] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Accepted: 12/14/2015] [Indexed: 11/25/2022] Open
Abstract
Purpose The emergence of bacteria that are resistant to many currently used drugs emphasizes the need to discover and develop new antibiotics that are effective against such multi-resistant strains. Kendomycin is a novel polyketide that has a unique quinone methide ansa structure and various biological properties. This compound exhibits strong antibacterial activity against Gram-negative and Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). Despite the promise of kendomycinin in several therapeutic areas, its mode of action has yet to be identified. Methods In this study, we used a multidisciplinary approach to gain insight into the antibacterial mechanism of this compound. Results The antibacterial activity of kendomycin appears to be bacteriostatic rather than bactericidal. Kendomycin inhibited the growth of the MRSA strain COL at a low concentration (MIC of 5 μg/mL). Proteomic analysis and gene transcription profiling of kendomycin-treated cells indicated that this compound affected the regulation of numerous proteins and genes involved in central metabolic pathways, such as the tricarboxylic acid (TCA) cycle (SdhA) and gluconeogenesis (PckA and GapB), cell wall biosynthesis and cell division (FtsA, FtsZ, and MurAA), capsule production (Cap5A and Cap5C), bacterial programmed cell death (LrgA and CidA), the cellular stress response (ClpB, ClpC, ClpP, GroEL, DnaK, and GrpE), and oxidative stress (AhpC and KatA). Electron microscopy revealed that kendomycin strongly affected septum formation during cell division. Most kendomycin-treated cells displayed incomplete septa with abnormal morphology. Conclusions Kendomycin might directly or indirectly affect the cell division machinery, protein stability, and programmed cell death in S. aureus. Additional studies are still needed to obtain deeper insight into the mode of action of kendomycin.
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Affiliation(s)
- Yasser A. Elnakady
- Department of Microbial Natural Products, Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research and Department of Pharmaceutical Biotechnology, Saarland University, Saarbrücken, Germany
- Faculty of Science, Zoology Department, King Saud University, Riyadh, Saudi Arabia
| | - Indranil Chatterjee
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany
| | - Markus Bischoff
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany
| | - Manfred Rohde
- Department of Medical Microbiology, Helmholtz Center for Infection Research, Braunschweig, Germany
| | - Michaele Josten
- Department of Medical Microbiology, Bonn University, Bonn, Germany
| | - Hans-Georg Sahl
- Department of Medical Microbiology, Bonn University, Bonn, Germany
| | - Mathias Herrmann
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany
| | - Rolf Müller
- Department of Microbial Natural Products, Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research and Department of Pharmaceutical Biotechnology, Saarland University, Saarbrücken, Germany
- * E-mail:
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Brown DG, Boström J. Analysis of Past and Present Synthetic Methodologies on Medicinal Chemistry: Where Have All the New Reactions Gone? J Med Chem 2015; 59:4443-58. [DOI: 10.1021/acs.jmedchem.5b01409] [Citation(s) in RCA: 826] [Impact Index Per Article: 91.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dean G. Brown
- AstraZeneca Neurosciences, IMED Biotech Unit, AstraZeneca R&D Boston, 141 Portland Street, Cambridge, Massachusetts 02139, United States
| | - Jonas Boström
- CVMD
Innovative Medicines, IMED Biotech Unit, AstraZeneca, Mölndal SE-431 83, Sweden
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Sohail M, Khan M, Zhang Y, Peng C, Chen Q, Zhao ZK. Four-component electrophilic difunctionalization of olefins using sulfonic acids, cyclic ethers, and NBS. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Métro TX, Bonnamour J, Reidon T, Duprez A, Sarpoulet J, Martinez J, Lamaty F. Comprehensive study of the organic-solvent-free CDI-mediated acylation of various nucleophiles by mechanochemistry. Chemistry 2015; 21:12787-96. [PMID: 26177831 DOI: 10.1002/chem.201501325] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Indexed: 11/09/2022]
Abstract
Acylation reactions are ubiquitous in the synthesis of natural products and biologically active compounds. Unfortunately, these reactions often require the use of large quantities of volatile and/or toxic solvents, either for the reaction, purification or isolation of the products. Herein we describe and discuss the possibility of completely eliminating the use of organic solvents for the synthesis, purification and isolation of products resulting from the acylation of amines and other nucleophiles. Thus, utilisation of N,N'-carbonyldiimidazole (CDI) allows efficient coupling between carboxylic acids and various nucleophiles under solvent-free mechanical agitation, and water-assisted grinding enables both the purification and isolation of pure products. Critical parameters such as the physical state and water solubility of the products, milling material, type of agitation (vibratory or planetary) as well as contamination from wear are analysed and discussed. In addition, original organic-solvent-free conditions are proposed to overcome the limitations of this approach. The calculations of various green metrics are included, highlighting the particularly low environmental impact of this strategy.
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Affiliation(s)
- Thomas-Xavier Métro
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Université de Montpellier, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier Cedex 5 (France).
| | - Julien Bonnamour
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Université de Montpellier, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier Cedex 5 (France)
| | - Thomas Reidon
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Université de Montpellier, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier Cedex 5 (France)
| | - Anthony Duprez
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Université de Montpellier, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier Cedex 5 (France)
| | - Jordi Sarpoulet
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Université de Montpellier, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier Cedex 5 (France)
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Université de Montpellier, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier Cedex 5 (France)
| | - Frédéric Lamaty
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Université de Montpellier, Campus Triolet, Place Eugène Bataillon, 34095 Montpellier Cedex 5 (France).
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Duan S, Huang S, Gong J, Shen Y, Zeng L, Feng Y, Ren W, Leng Y, Hu Y. Design and synthesis of novel arctigenin analogues for the amelioration of metabolic disorders. ACS Med Chem Lett 2015; 6:386-91. [PMID: 25941553 DOI: 10.1021/acsmedchemlett.5b00007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 03/01/2015] [Indexed: 12/22/2022] Open
Abstract
Analogues of the natural product (-)-arctigenin, an activator of adenosine monophosphate activated protein kinase, were prepared in order to evaluate their effects on 2-deoxyglucose uptake in L6 myotubes and possible use in ameliorating metabolic disorders. Racemic arctigenin 2a was found to display a similar uptake enhancement as does (-)-arctigenin. As a result, the SAR study was conducted utilizing racemic compounds. The structure-activity relationship study led to the discovery of key substitution patterns on the lactone motif that govern 2-deoxyglucose uptake activities. The results show that replacement of the para-hydroxyl group of the C-2 benzyl moiety of arctigenin by Cl has a pronounced effect on uptake activity. Specifically, analogue 2p, which contains the p-Cl substituent, stimulates glucose uptake and fatty acid oxidation in L6 myotubes.
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Affiliation(s)
- Shudong Duan
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Suling Huang
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jian Gong
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Yu Shen
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Limin Zeng
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Ying Feng
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Wenming Ren
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Ying Leng
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Youhong Hu
- State Key Laboratory of Drug Research, Shanghai Institute
of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
- ZJU-ENS Joint Laboratory of Medicinal Chemistry, Zhejiang
Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical
Sciences, Zhejiang University, Hangzhou 310058, China
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Abstract
In this article strategies for the design and synthesis of natural product analogues are summarized and illustrated with some selected examples.
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Affiliation(s)
- Martin E. Maier
- Institut für Organische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
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Vasudevan N, Kashinath K, Reddy DS. Total Synthesis of Deoxy-solomonamide B by Mimicking Biogenesis. Org Lett 2014; 16:6148-51. [DOI: 10.1021/ol503011g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- N. Vasudevan
- CSIR-National Chemical Laboratory, Division
of Organic Chemistry, Dr. Homi Bhabha Road, Pune, 411008, India
| | - K. Kashinath
- CSIR-National Chemical Laboratory, Division
of Organic Chemistry, Dr. Homi Bhabha Road, Pune, 411008, India
| | - D. Srinivasa Reddy
- CSIR-National Chemical Laboratory, Division
of Organic Chemistry, Dr. Homi Bhabha Road, Pune, 411008, India
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Liang YK, Yue ZZ, Li JX, Tan C, Miao ZH, Tan WF, Yang CH. Natural product-based design, synthesis and biological evaluation of anthra[2,1-d]thiazole-6,11-dione derivatives from rhein as novel antitumour agents. Eur J Med Chem 2014; 84:505-15. [DOI: 10.1016/j.ejmech.2014.07.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 07/14/2014] [Accepted: 07/15/2014] [Indexed: 10/25/2022]
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Kang YF, Yan WJ, Zhou TW, Dai F, Li XZ, Bao XZ, Du YT, Yuan CH, Wang HB, Ren XR, Liu Q, Jin XL, Zhou B, Zhang J. Tailoring 3,3′-Dihydroxyisorenieratene to Hydroxystilbene: Finding a Resveratrol Analogue with Increased Antiproliferation Activity and Cell Selectivity. Chemistry 2014; 20:8904-8. [DOI: 10.1002/chem.201403024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Indexed: 01/09/2023]
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Girard SA, Knauber T, Li CJ. Dehydrierende Kreuzkupplungen von C sp 3-H-Bindungen: vielseitige Verfahren zur Bildung von C-C-Bindungen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304268] [Citation(s) in RCA: 394] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Girard SA, Knauber T, Li CJ. The cross-dehydrogenative coupling of C(sp3)-H bonds: a versatile strategy for C-C bond formations. Angew Chem Int Ed Engl 2013; 53:74-100. [PMID: 24214829 DOI: 10.1002/anie.201304268] [Citation(s) in RCA: 1536] [Impact Index Per Article: 139.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/23/2013] [Indexed: 11/09/2022]
Abstract
Over the last decade, substantial research has led to the introduction of an impressive number of efficient procedures which allow the selective construction of CC bonds by directly connecting two different CH bonds under oxidative conditions. Common to these methodologies is the generation of the reactive intermediates in situ by activation of both CH bonds. This strategy was introduced by the group of Li as cross-dehydrogenative coupling (CDC) and discloses waste-minimized synthetic alternatives to classic coupling procedures which rely on the use of prefunctionalized starting materials. This Review highlights the recent progress in the field of cross-dehydrogenative C sp 3C formations and provides a comprehensive overview on existing procedures and employed methodologies.
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Affiliation(s)
- Simon A Girard
- Department of Chemistry and FQRNT Center for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke St. W., Montréal, Quebec H3A 0B8 (Canada) http://cjli.mcgill.ca
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Xiao-Ai-Ping, a TCM Injection, Enhances the Antigrowth Effects of Cisplatin on Lewis Lung Cancer Cells through Promoting the Infiltration and Function of CD8(+) T Lymphocytes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:879512. [PMID: 23956781 PMCID: PMC3730189 DOI: 10.1155/2013/879512] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/17/2013] [Accepted: 06/28/2013] [Indexed: 12/20/2022]
Abstract
Objectives. To investigate how Xiao-Ai-Ping injection, a traditional Chinese medicine and an ancillary drug in tumor treatment, enhances the antitumor effects of cisplatin on Lewis lung cancer (LLC) cells. Methods. LLC-bearing mice were daily intraperitoneally injected with various doses of cisplatin, Xiao-Ai-Ping, or cisplatin plus Xiao-Ai-Ping, respectively. Body weight and tumor volumes were measured every three days. Results. Combination of Xiao-Ai-Ping and cisplatin yielded significantly better antigrowth and proapoptotic effects on LLC xenografts than sole drug treatment did. In addition, we found that Xiao-Ai-Ping triggered the infiltration of CD8+ T cells, a group of cytotoxic T cells, to LLC xenografts. Furthermore, the mRNA levels of interferon-γ (ifn-γ), perforin-1 (prf-1), and granzyme B (gzmb) in CD8+ T cells were significantly increased after combination treatment of Xiao-Ai-Ping and cisplatin. In vitro studies showed that Xiao-Ai-Ping markedly upregulated the mRNA levels of ifn-γ, prf-1, and gzmb in CD8+ T cells in a concentration-dependent manner, suggesting that Xiao-Ai-Ping augments the function of CD8+ T cells. Conclusions. Xiao-Ai-Ping promotes the infiltration and function of CD8+ T cells and thus enhances the antigrowth effects of cisplatin on LLC xenografts, which provides new evidence for the combination of Xiao-Ai-Ping and cisplatin in clinic in China.
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Ali I, Haque A, Saleem K, Hsieh MF. Curcumin-I Knoevenagel's condensates and their Schiff's bases as anticancer agents: synthesis, pharmacological and simulation studies. Bioorg Med Chem 2013; 21:3808-20. [PMID: 23643901 DOI: 10.1016/j.bmc.2013.04.018] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 04/08/2013] [Accepted: 04/09/2013] [Indexed: 12/15/2022]
Abstract
Pyrazolealdehydes (4a-d), Knoevenagel's condensates (5a-d) and Schiff's bases (6a-d) of curcumin-I were synthesized, purified and characterized. Hemolysis assays, cell line activities, DNA bindings and docking studies were carried out. These compounds were lesser hemolytic than standard drug doxorubicin. Minimum cell viability (MCF-7; wild) observed was 59% (1.0 μg/mL) whereas the DNA binding constants ranged from 1.4×10(3) to 8.1×10(5) M(-1). The docking energies varied from -7.30 to -13.4 kcal/mol. It has been observed that DNA-compound adducts were stabilized by three governing forces (Van der Wall's, H-bonding and electrostatic attractions). It has also been observed that compounds 4a-d preferred to enter minor groove while 5a-d and 6a-d interacted with major grooves of DNA. The anticancer activities of the reported compounds might be due to their interactions with DNA. These results indicated the bright future of the reported compounds as anticancer agents.
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Affiliation(s)
- Imran Ali
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi 110025, India.
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Abstract
INTRODUCTION Natural products have long been instrumental for discovering antibiotics, but many pharmaceutical companies abandoned this field and new antibiotics declined. In contrast, microbial resistance to current antibiotics has approached critical levels. AREAS COVERED This article gives historical perspectives by providing background about present-day economic realities and medical needs for antibiotic research, whose pipeline is mostly focused toward older known agents and newer semi-synthetic derivatives. Future research trends and projected technological developments open many innovative opportunities to discover novel antibacterials and find ways to control pathogenic bacteria without conventional antibiotics that provoke resistance. EXPERT OPINION The successful registration of daptomycin, retapamulin and fidaxomicin indicate the re-emergence of natural products has already begun. Semi-synthetic derivatives from other under-explored classes are progressing. More effort is being put into approaches such as total synthesis, discovery of new structural scaffolds for synthesis, alterations of biosynthetic pathways, combinatorial biosynthesis, new screening targets and new resources from which to isolate natural products. A return to successful screening of actinomycetes depends on solving the rate-limiting dereplication obstacle. Long-term solutions need to come from greater exploration of the massive numbers of uncultured microbes. An ultimate solution to the antibiotic-promoted microbial resistance cycle may lie in finding ways to control bacteria by non-lethal means.
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Ferreira R, Garcia H, Sousa AF, Freire CSR, Silvestre AJD, Kunz W, Rebelo LPN, Silva Pereira C. Microwave assisted extraction of betulin from birch outer bark. RSC Adv 2013. [DOI: 10.1039/c3ra43868f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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