1
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Huang Y, Xue C, Bu R, Wu C, Li J, Zhang J, Chen J, Shi Z, Chen Y, Wang Y, Liu Z. Inhibition and transport mechanisms of the ABC transporter hMRP5. Nat Commun 2024; 15:4811. [PMID: 38844452 PMCID: PMC11156954 DOI: 10.1038/s41467-024-49204-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 05/24/2024] [Indexed: 06/09/2024] Open
Abstract
Human multidrug resistance protein 5 (hMRP5) effluxes anticancer and antivirus drugs, driving multidrug resistance. To uncover the mechanism of hMRP5, we determine six distinct cryo-EM structures, revealing an autoinhibitory N-terminal peptide that must dissociate to permit subsequent substrate recruitment. Guided by these molecular insights, we design an inhibitory peptide that could block substrate entry into the transport pathway. We also identify a regulatory motif, comprising a positively charged cluster and hydrophobic patches, within the first nucleotide-binding domain that modulates hMRP5 localization by engaging with membranes. By integrating our structural, biochemical, computational, and cell biological findings, we propose a model for hMRP5 conformational cycling and localization. Overall, this work provides mechanistic understanding of hMRP5 function, while informing future selective hMRP5 inhibitor development. More broadly, this study advances our understanding of the structural dynamics and inhibition of ABC transporters.
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Affiliation(s)
- Ying Huang
- Shenzhen Key Labortory of Biomolecular Assembling and Regulation, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
- Department of Immunology and Microbiology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Chenyang Xue
- Shenzhen Key Labortory of Biomolecular Assembling and Regulation, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
- Department of Immunology and Microbiology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Ruiqian Bu
- Shenzhen Key Labortory of Biomolecular Assembling and Regulation, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
- Department of Immunology and Microbiology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Cang Wu
- Shenzhen Key Labortory of Biomolecular Assembling and Regulation, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
- Department of Immunology and Microbiology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Jiachen Li
- College of Life Sciences, Zhejiang University, Hangzhou, 310027, China
| | - Jinqiu Zhang
- College of Life Sciences, Zhejiang University, Hangzhou, 310027, China
| | - Jinyu Chen
- College of Life Sciences, Zhejiang University, Hangzhou, 310027, China
| | - Zhaoying Shi
- Department Of Chemical Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Yonglong Chen
- Department Of Chemical Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Yong Wang
- College of Life Sciences, Zhejiang University, Hangzhou, 310027, China.
- The Provincial International Science and Technology Cooperation Base on Engineering Biology, International Campus of Zhejiang University, Haining, 314400, China.
| | - Zhongmin Liu
- Shenzhen Key Labortory of Biomolecular Assembling and Regulation, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
- Department of Immunology and Microbiology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
- Institute for Biological Electron Microscopy, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
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2
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Tsutsumi H, Kuroda T, Kimura H, Goto Y, Suga H. Posttranslational chemical installation of azoles into translated peptides. Nat Commun 2021; 12:696. [PMID: 33514734 PMCID: PMC7846737 DOI: 10.1038/s41467-021-20992-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 01/06/2021] [Indexed: 02/06/2023] Open
Abstract
Azoles are five-membered heterocycles often found in the backbones of peptidic natural products and synthetic peptidomimetics. Here, we report a method of ribosomal synthesis of azole-containing peptides involving specific ribosomal incorporation of a bromovinylglycine derivative into the nascent peptide chain and its chemoselective conversion to a unique azole structure. The chemoselective conversion was achieved by posttranslational dehydrobromination of the bromovinyl group and isomerization in aqueous media under fairly mild conditions. This method enables us to install exotic azole groups, oxazole and thiazole, at designated positions in the peptide chain with both linear and macrocyclic scaffolds and thereby expand the repertoire of building blocks in the mRNA-templated synthesis of designer peptides. Azoles are five-membered heterocycles found in peptidic natural products and synthetic peptiodomimetics. Here the authors demonstrate a posttranslational chemical modification method for in vitro ribosomal synthesis of peptides with exotic azole groups at specific positions.
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Affiliation(s)
- Haruka Tsutsumi
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Tomohiro Kuroda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Hiroyuki Kimura
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Yuki Goto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan.
| | - Hiroaki Suga
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan.
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3
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Maezaki N, Magata T, Hirokawa Y, Rokuhara Y, Nakayama R, Takahashi R, Nogami M, Tai Y, Imahori T, Hashizume T. Synthesis and Evaluation of Dendroamide A and Three Regioisomeric Analogs Having a Reversed Azole Ring as P-Glycoprotein Inhibitors. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Nowruzi B, Porzani SJ. Toxic compounds produced by cyanobacteria belonging to several species of the order Nostocales: A review. J Appl Toxicol 2020; 41:510-548. [PMID: 33289164 DOI: 10.1002/jat.4088] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/24/2020] [Accepted: 09/28/2020] [Indexed: 12/12/2022]
Abstract
Cyanobacteria are well recognised as producers of a wide range of natural compounds that are in turn recognised as toxins that have potential and useful applications in the future as pharmaceutical agents. The order Nostocales, which is largely overlooked in this regard, has become increasingly recognised as a source of toxin producers including Anabaena, Nostoc, Hapalosiphon, Fischerella, Anabaenopsis, Aphanizomenon, Gloeotrichia, Cylindrospermopsis, Scytonema, Raphidiopsis, Cuspidothrix, Nodularia, Stigonema, Calothrix, Cylindrospermum and Desmonostoc species. The toxin compounds (i.e., microcystins, nodularin, anatoxins, ambiguines, fischerindoles and welwitindolinones) and metabolites are about to have a destructive effect on both inland and aquatic environment aspects. The present review gives an overview of the various toxins that are extracted by the order Nostocales. The current research suggests that these compounds that are produced by cyanobacterial species have promising future considerations as potentially harmful algae and as promising leads for drug discovery.
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Affiliation(s)
- Bahareh Nowruzi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Samaneh Jafari Porzani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
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5
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Mhlongo JT, Brasil E, de la Torre BG, Albericio F. Naturally Occurring Oxazole-Containing Peptides. Mar Drugs 2020; 18:md18040203. [PMID: 32290087 PMCID: PMC7231064 DOI: 10.3390/md18040203] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 12/29/2022] Open
Abstract
Oxazole-containing peptides are mostly of marine origin and they form an intriguing family with a broad range of biological activities. Here we classify these peptides on the basis of their chemical structure and discuss a number of representatives of each class that reflect the extraordinary potential of this family as a source of new drugs.
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Affiliation(s)
- Jessica T. Mhlongo
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4001, South Africa; (J.T.M.); (E.B.)
- KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban 4041, South Africa
| | - Edikarlos Brasil
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4001, South Africa; (J.T.M.); (E.B.)
- KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban 4041, South Africa
| | - Beatriz G. de la Torre
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4001, South Africa; (J.T.M.); (E.B.)
- KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban 4041, South Africa
- Correspondence: (B.G.d.l.T.); (F.A.); Tel.: +27-614009144 (F.A.)
| | - Fernando Albericio
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4001, South Africa; (J.T.M.); (E.B.)
- CIBER-BBN (Networking Centre on Bioengineering, Biomaterials and Nanomedicine) and Department of Organic Chemistry, University of Barcelona, 08028 Barcelona, Spain
- Correspondence: (B.G.d.l.T.); (F.A.); Tel.: +27-614009144 (F.A.)
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6
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Hjerrild P, Tørring T, Poulsen TB. Dehydration reactions in polyfunctional natural products. Nat Prod Rep 2020; 37:1043-1064. [DOI: 10.1039/d0np00009d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Here, we review methods for chemical dehydration of alcohols to alkenes and discuss the potential of late-stage functionalization by direct, site- and chemo-selective dehydration of complex molecular substrates.
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Affiliation(s)
- Per Hjerrild
- Department of Chemistry
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Thomas Tørring
- Department of Engineering – Microbial Biosynthesis
- Aarhus University
- Aarhus C
- Denmark
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7
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Abstract
This Review is devoted to the chemistry of macrocyclic peptides having heterocyclic fragments in their structure. These motifs are present in many natural products and synthetic macrocycles designed against a particular biochemical target. Thiazole and oxazole are particularly common constituents of naturally occurring macrocyclic peptide molecules. This frequency of occurrence is because the thiazole and oxazole rings originate from cysteine, serine, and threonine residues. Whereas other heteroaryl groups are found less frequently, they offer many insightful lessons that range from conformational control to receptor/ligand interactions. Many options to develop new and improved technologies to prepare natural products have appeared in recent years, and the synthetic community has been pursuing synthetic macrocycles that have no precedent in nature. This Review attempts to summarize progress in this area.
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Affiliation(s)
- Ivan V Smolyar
- Department of Chemistry , Moscow State University , Leninskije Gory , 199991 Moscow , Russia
| | - Andrei K Yudin
- Davenport Research Laboratories, Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Valentine G Nenajdenko
- Department of Chemistry , Moscow State University , Leninskije Gory , 199991 Moscow , Russia
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8
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Ahmadi S, Dabbagh HA, Ebrahimi S, Farrokhpour H. Diastereomeric discrimination by achiral substances: the effect of diverse ions in the stability of amphi-ionophore cystine-based cyclopeptide stereoisomers. Mol Phys 2019. [DOI: 10.1080/00268976.2018.1527408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Samaneh Ahmadi
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| | - Hossein A. Dabbagh
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| | - Saeid Ebrahimi
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
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9
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Hamdan F, Tahoori F, Balalaie S. Synthesis of novel cyclopeptides containing heterocyclic skeletons. RSC Adv 2018; 8:33893-33926. [PMID: 35548835 PMCID: PMC9086729 DOI: 10.1039/c8ra03899f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 09/14/2018] [Indexed: 01/13/2023] Open
Abstract
Cyclopeptides can be considered as naturally biologically active compounds. Over the last several decades, many attempts have been made to synthesize complex naturally occurring cyclopeptides, and great progress has been achieved to advance the field of total synthesis. Moreover, cyclopeptides containing heterocyclic skeletons have been recently developed into powerful reactions and approaches. This review aims to highlight recent advances in the synthesis of cyclopeptides containing heterocyclic skeletons such as triazole, oxazole, thiazole, and tetrazole.
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Affiliation(s)
- Fatima Hamdan
- Peptide Chemistry Research Center, K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
| | - Fatemeh Tahoori
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
- Medical Biology Research Center, Kermanshah University of Medical Sciences Kermanshah Iran
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10
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Stefan SM, Wiese M. Small-molecule inhibitors of multidrug resistance-associated protein 1 and related processes: A historic approach and recent advances. Med Res Rev 2018; 39:176-264. [DOI: 10.1002/med.21510] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/05/2018] [Accepted: 04/28/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Sven Marcel Stefan
- Pharmaceutical Institute; Rheinische Friedrich-Wilhelms-University; Bonn Germany
| | - Michael Wiese
- Pharmaceutical Institute; Rheinische Friedrich-Wilhelms-University; Bonn Germany
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11
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Magata T, Nagano S, Endo T, Kawaida J, Nagaoka S, Hirokawa Y, Maezaki N. Enantioselective synthesis of methyl 2-[1-[( tert -butoxycarbonyl)amino]ethyl]-4-methyloxazole-5-carboxylate by a one–pot enamide cyclization. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Abstract
Abstract
RHAMM is hyaluronan- receptor with multiple functions in the cell, RHAMM is involved in proliferation, motility, migration, invasion, mitotic spindle formation in tumour cells. Therefore, RHAMM could be a relevant target for molecular targeted therapies against tumors.The role of RHAMM-target peptides in inhibition invasion for preventing breast cancer has not yet been investigated. Base on this, we analyzed the RHAMM-target peptides for their therapeutic activity against breast cancer cells. In the present study, we examined the effect of RHAMM-target peptides on the invasion of breast cancer cells (MDAMB- 231), using confocal microscopy. We shown that RHAMM-target peptides decreased formation of invadopodia of breast cancer cells. The treatment of breast cancer cells by RHAMM -target peptides inhibited the invasion up to 99 %. Additionally, RHAMM-target peptides induced the morphological changes of of breast cancer cells. Therefore, based on these results, we can conclude that RHAMM-target peptides may be potential anti-cancer agents.
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Affiliation(s)
- Natalia Akentieva
- Kinetics Chemical and Biological Processes; Institute problems of Chemical Physics RAS, pr.acad. Semenova, 1 Chernogolovka Moscow , Russian Federation
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13
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Khavani M, Izadyar M, Mehranfar A. A DFT study on the kinetics and mechanism of cyclodiglycine thermal decomposition in the gas phase. PROGRESS IN REACTION KINETICS AND MECHANISM 2016. [DOI: 10.3184/146867816x14651390195612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Theoretical investigations using density functional theory have been performed on the kinetics and mechanism of cyclodiglycine (piperazine-2,5-dione) thermal decomposition in the gas phase. Five major possible paths have been proposed and analysed. α-Lactam, β-lactam, 4-imidazolidinone and smaller species such as HNCO, H2CNH, H2CCO, CO, H2 and HCN can be produced through these paths. The route yielding aziridine and HNCO is the optimum channel for this reaction from the energy point of view. Finally, according to the quantum theory of atoms in molecules, electron localisation function and localised orbital locator analyses, it was confirmed that a concerted mechanism operates for the reaction and all critical bonds of the transition states have covalent character.
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Affiliation(s)
- Mohammad Khavani
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mohammad Izadyar
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Aliyeh Mehranfar
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
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14
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Chalyk BA, Kandaurova IY, Hrebeniuk KV, Manoilenko OV, Kulik IB, Iminov RT, Kubyshkin V, Tverdokhlebov AV, Ablialimov OK, Mykhailiuk PK. A base promoted multigram synthesis of aminoisoxazoles: valuable building blocks for drug discovery and peptidomimetics. RSC Adv 2016. [DOI: 10.1039/c6ra02365g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
An easy access to a large panel of aminoisoxazoles starting from commonly available amino acids.
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Affiliation(s)
| | | | | | | | - Irene B. Kulik
- Institute of Bioorganic Chemistry & Petrochemistry
- NAS of Ukraine
- Kyiv 02660
- Ukraine
| | | | | | | | | | - Pavel K. Mykhailiuk
- Enamine Ltd
- 01103 Kyiv
- Ukraine
- Department of Chemistry
- Taras Shevchenko National University of Kyiv
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15
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Abstract
Wewakazole B is a novel cyclodecapeptide with highly potent cytotoxic activity isolated from a sample of M. producens collected from the Red Sea.
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Affiliation(s)
- Bohua Long
- The Fourth People's Hospital of Shenzhen
- Shenzhen 518033
- China
- Shenzhen Institute of Geriatrics
- Shenzhen 518020
| | - Jingzhao Zhang
- Key Lab for New Drug Research of TCM and Shenzhen Branch
- State R&D Centre for Viro-Biotech
- Research Institute of Tsinghua University in Shenzhen
- Shenzhen 518057
- China
| | - Xudong Tang
- Key Lab for New Drug Research of TCM and Shenzhen Branch
- State R&D Centre for Viro-Biotech
- Research Institute of Tsinghua University in Shenzhen
- Shenzhen 518057
- China
| | - Zhengzhi Wu
- The Fourth People's Hospital of Shenzhen
- Shenzhen 518033
- China
- Shenzhen Institute of Geriatrics
- Shenzhen 518020
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16
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Takahashi H, Endo N, Takanose H, Sugiyama Y, Eguchi F, Oguri K, Hamamoto H, Shioiri T, Matsugi M. Concise Synthesis of All Stereoisomers of Dendroamide A by Fluorous Mixture Synthesis Based on Fluorous-Fmoc Protection of Amino Acids. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500394] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Bagley MC, Dwyer JE, Molina MDB, Rand AW, Rand HL, Tomkinson NCO. Microwave-assisted synthesis of 3-aminobenzo[b]thiophene scaffolds for the preparation of kinase inhibitors. Org Biomol Chem 2015; 13:6814-24. [DOI: 10.1039/c5ob00819k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microwave-assisted synthesis of 3-aminobenzo[b]thiophenes has been applied to 3 kinase inhibitor scaffolds.
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Affiliation(s)
- Mark C. Bagley
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
| | - Jessica E. Dwyer
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
| | | | - Alexander W. Rand
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
| | - Hayley L. Rand
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton, East Sussex
- UK
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18
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Reddy PR, Reddy GM, Padmaja A, Padmavathi V, Kondaiah P, Krishna NS. Synthesis, Antioxidant, and Cytotoxic Activities ofN-Azole Substituted Thiomorpholine Derivatives. Arch Pharm (Weinheim) 2014; 347:221-8. [DOI: 10.1002/ardp.201300299] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 09/17/2013] [Accepted: 09/23/2013] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Adivireddy Padmaja
- Department of Chemistry; Sri Venkateswara University; Tirupati Andhra Pradesh India
| | | | - Paturu Kondaiah
- Department of Molecular Reproduction Development and Genetics; Indian Institute of Science; Bangalore Karnataka India
| | - Narra Siva Krishna
- Department of Molecular Reproduction Development and Genetics; Indian Institute of Science; Bangalore Karnataka India
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19
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20
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Synergistic effect of a novel cyclic pentadepsipeptide, neoN-methylsansalvamide, and paclitaxel on human multidrug resistance cancer cell lines. Anticancer Drugs 2013; 24:455-60. [PMID: 23411682 DOI: 10.1097/cad.0b013e32835f060d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
NeoN-methylsansalvamide is a novel low-molecular-weight cyclic pentadepsipeptide that exerts cytotoxic effects on various human cancer cell lines. Its structural analysis using liquid chromatography mass/mass spectrometry showed the cyclic structure sequence -phenylalanine-leucine-valine-N-methylleucine-leucic acid-. The intrinsic cytotoxic and multidrug resistance reversal effects of neoN-methylsansalvamide were evaluated on the human cancer cell lines MES-SA and HCT15 as well as on their multidrug resistance sublines (MES-SA/DX5 and HCT15/CL05, respectively) using the sulforhodamine B assay. The EC50 values of paclitaxel for MES-SA, HCT15, and for the multidrug resistance sublines MES-SA/DX5 and HCT15/CL05 were 1.00±0.20, 0.85±0.63, 10.00±0.53, and >1000 nmol/l, respectively. However, the EC50 values for paclitaxel including 3 μmol/l neoN-methylsansalvamide for MES-SA/DX5, HCT15, and HCT15/CL02 were 1.58±0.12, 0.10±0.02, and 288.40±21.02 nmol/l, respectively. The in-vitro multidrug resistance reversal activity of neoN-methylsansalvamide was similar to that of the control verapamil. These finding suggests that a novel cyclic pentadepsipeptide, neoN-methylsansalvamide, is effective in reversing multidrug resistance in vitro, and this activity may be a major applicable biological function of this compound.
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21
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Tao H, Peng L, Zhang Q. Synthesis of azole-enriched cyclic peptides by a clean solid-phase-based cyclization-cleavage strategy. ACS COMBINATORIAL SCIENCE 2013; 15:447-51. [PMID: 23962348 DOI: 10.1021/co400071y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Naturally occurring azole-enriched cyclic peptides have broad biological and pharmacological activities. Previous synthetic efforts have mainly concentrated on the preparation of individual target molecules in solution phase. A solid-phase-based cyclitive cleavage strategy was deployed here for efficient library synthesis of azole cyclopeptide derivatives, which is part of our continuous efforts for the characterization of potent modulators of multidrug resistance efflux proteins. Procedures were optimized to afford the azole cyclopeptides at high yield and purity, eliminating the need for any chromatographic purification steps. This development is ideal for high throughput library synthesis and screening and will facilitate the ultimate discovery of novel azole cyclopeptides with potent biological activities.
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Affiliation(s)
- Houchao Tao
- Department of Integrative
Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Lingling Peng
- Department of Integrative
Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Qinghai Zhang
- Department of Integrative
Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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22
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Alvarado C, Hernández G, Díaz E, Soano JD, Vilchis-Reyes MA, Martínez-Urbina MA, Guzmán A. Synthesis of O-Me Ulongamide B and O-Me Ulongamide C, Natural Modified Cyclodepsipeptides. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2011.618284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Cuauhtémoc Alvarado
- a Instituto de Química , Universidad Nacional Autónoma de México, Circuito Exterior s/n Ciudad Universitaria , Coyoacán , México
| | - Gerardo Hernández
- a Instituto de Química , Universidad Nacional Autónoma de México, Circuito Exterior s/n Ciudad Universitaria , Coyoacán , México
| | - Eduardo Díaz
- a Instituto de Química , Universidad Nacional Autónoma de México, Circuito Exterior s/n Ciudad Universitaria , Coyoacán , México
| | - José D. Soano
- b Departamento de Biología, Facultad de Química , Universidad Nacional Autónoma de México, Ciudad Universitaria , Coyoacán , México
| | - Miguel A. Vilchis-Reyes
- a Instituto de Química , Universidad Nacional Autónoma de México, Circuito Exterior s/n Ciudad Universitaria , Coyoacán , México
| | - Miguel A. Martínez-Urbina
- a Instituto de Química , Universidad Nacional Autónoma de México, Circuito Exterior s/n Ciudad Universitaria , Coyoacán , México
| | - Angel Guzmán
- a Instituto de Química , Universidad Nacional Autónoma de México, Circuito Exterior s/n Ciudad Universitaria , Coyoacán , México
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23
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Diness F, Nielsen DS, Fairlie DP. Synthesis of the Thiazole–Thiazoline Fragment of Largazole Analogues. J Org Chem 2011; 76:9845-51. [DOI: 10.1021/jo201675r] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Frederik Diness
- Division of Chemistry and Structural
Biology, Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Daniel S. Nielsen
- Division of Chemistry and Structural
Biology, Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - David P. Fairlie
- Division of Chemistry and Structural
Biology, Institute
for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
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24
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25
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Dehydrative cyclization of serine, threonine, and cysteine residues catalyzed by molybdenum(VI) oxo compounds. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.12.074] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Veale EB, O'Brien JE, McCabe T, Gunnlaugsson T. The synthesis, N-alkylation and epimerisation study of a phthaloyl derived thiazolidine. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.097] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Suzuki H, Andoh M, Yonezawa Y, Akai S, Shin CG, Sato KI. Total Syntheses of Bistratamides J, E, and H from Two Types of ΔAla-Containing Oligopeptides. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2008. [DOI: 10.1246/bcsj.81.495] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Nicolaou KC, Dethe DH, Leung GYC, Zou B, Chen DYK. Total synthesis of thiopeptide antibiotics GE2270A, GE2270T, and GE2270C1. Chem Asian J 2008; 3:413-29. [PMID: 18188863 DOI: 10.1002/asia.200700361] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The total syntheses of the thiopeptide antibiotics GE2270A (7), GE2270T (8), and GE2270C1 (9) are described. The original synthetic strategies employed utilized the hetero-Diels-Alder reaction to construct the pyridine core of the target molecules and relied on a macrolactamization process to construct the macrocycle. The hetero-Diels-Alder-based strategy finally evolved allows the introduction of all four thiazole units attached to the pyridine ring and a one-pot sequence for macrocyclization and side-chain extension, culminating in highly convergent and expedient syntheses of these molecules as exemplified by a 24-step synthesis of GE2270C1 (9).
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
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29
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Li G, Wu P, Hua Cao L. Synthesis of novelN-alkyl/aryl-N′-(4-arylthiazol-2-yl)-N″-xylosyl guanidines. HETEROATOM CHEMISTRY 2007. [DOI: 10.1002/hc.20379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Matsumoto T, Morishita E, Shioiri T. Investigation of macrocyclization sites for the synthesis of dendroamide A—an approach from a conformational search. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.04.096] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Sakakura A, Kondo R, Umemura S, Ishihara K. Catalytic Synthesis of Peptide-Derived Thiazolines and Oxazolines using Bis(quinolinolato)dioxomolybdenum(VI) Complexes. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200700068] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Abstract
Four amphidinolide E stereoisomers, amphidinolide E (1), 2-epi-amphidinolide E (2), 19-epi-amphidinolide E (3), and 2-epi-19-epi-amphidinolide E (4), have been synthesized via the judicious union of aldehyde 5, allylsilanes 7 or 8, acids 9 or 10, and vinylstannane 6. The C19 stereocenters of the C19 epimeric allylsilanes 7 and 8 were introduced via crotylboration reactions early in the synthesis. [3+2]-Annulation reactions of aldehyde 5 with allylsilanes 7 and 8 were employed to set the core tetrahydrofuran units of 1-4. Finally, the C2 stereocenter was installed by esterification using acid 9, without incident, or with acid 10, in which case an unexpected and completely stereoselective inversion of C2 occurs.
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Affiliation(s)
- Porino Va
- Departments of Chemistry and Biochemistry, Scripps Florida, Jupiter, Florida 33458
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33
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Tang GL, Cheng YQ, Shen B. Chain initiation in the leinamycin-producing hybrid nonribosomal peptide/polyketide synthetase from Streptomyces atroolivaceus S-140. Discrete, monofunctional adenylation enzyme and peptidyl carrier protein that directly load D-alanine. J Biol Chem 2007; 282:20273-82. [PMID: 17502372 DOI: 10.1074/jbc.m702814200] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Nonribosomal peptide natural products are biosynthesized from amino acid precursors by nonribosomal peptide synthetases (NRPSs), which are organized into modules. For a typical NRPS initiation module, an adenylation (A) domain activates an amino acid and installs it onto a peptidyl carrier protein (PCP) domain as a thioester; an elongation module, which has a condensation (C) domain located between every consecutive pair of A and PCP domains, catalyzes the formation of the peptide bond between the upstream aminoacyl/peptidyl-S-PCP and the free amino group of the downstream aminoacyl-S-PCP. D-amino acid constituents in peptide natural products usually arise from the L-enantiomers through the action of integral epimerization (E) domains of an NRPS. The biosynthetic gene cluster for leinamycin, a hybrid nonribosomal peptide/polyketide containing a D-alanine moiety, does not encode a typical NRPS initiation module with the expected A-PCP-E domains; instead, it has only an A protein (LnmQ) and a PCP (LnmP), both of which are encoded by separate genes. Here we show the results of biochemical experiments as follows: (i) we demonstrate that LnmQ directly activates D-alanine as D-alaninyl-AMP and installs it onto LnmP to generate a D-alaninyl-S-PCP intermediate; (ii) we confirm that aminoacylation of LnmP by LnmQ in trans is the result of specific communication between the separate A and PCP proteins; and (iii) we reveal that leinamycin production can be improved by supplementation of exogenous D-alanine in the fermentation broth of Streptomyces atroolivaceous S-140. These findings unveil an unprecedented NRPS initiation module structure that is characterized by a discrete D-alanine-specific A protein and a PCP.
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Affiliation(s)
- Gong-Li Tang
- Division of Pharmaceutical Sciences, University of Wisconsin, 777 Highland Avenue, Madison, WI 53705, USA
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34
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Bertram A, Maulucci N, New OM, Mohd Nor SM, Pattenden G. Synthesis of libraries of thiazole, oxazole and imidazole-based cyclic peptides from azole-based amino acids. A new synthetic approach to bistratamides and didmolamides. Org Biomol Chem 2007; 5:1541-53. [PMID: 17571182 DOI: 10.1039/b701999h] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of a 1 : 1 mixture of the thiazole-based amino acids 8a and 8b with FDPP-i-Pr(2)NEt in CH(3)CN gave a mixture of the cyclic trimers 14, 15, 16 and 17 and the cyclic tetramers 19 and 23 in the ratio 2 : 7 : 5 : 8 : 1 : 1 and in a combined yield of 70%. Separate coupling reactions between the bisimidazole amino acid 45 and the thiazole/oxazole amino acids 43a and 42a in the presence of FDPP-i-Pr(2)NEt led to the bisimidazole based cyclic trimers 55 and 57 respectively (54-57%) and to the cyclic tetramer 56 (8-11%). Similar coupling reactions involving the bisthiazole and bisoxazole amino acids 49 and 47 with the imidazole/oxazole/thiazole amino acids 41a, 42a and 43a gave rise to the library of oxazole, thiazole and imidazole-based cyclic peptides 58, 59, 60, 61, 62, 63, 64 and 65. A coupling reaction between the bisthiazole amino acid 49 and the oxazole amino acid 73 led to an efficient (36% overall) synthesis of bistratamide H (67) found in the ascidian Lissoclinum bistratum. Coupling reactions involving oxazolines with thiazole amino acids were less successful. Thus, a coupling reaction between the phenylalanine-based oxazoline amino acid 71a and either the thiazole amino acid 8a or the bisthiazole amino acid 74 gave only a 2% yield of the cyclic hexapeptide didmolamide A (4) found in the ascidian Didemnum molle. Didmolamide B (68) was obtained in 9% yield from a coupling reaction between 74 and the phenylalanine threonine amino acid 72, using either FDPP or DPPA.
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Affiliation(s)
- Anna Bertram
- School of Chemistry, University of Nottingham, Nottingham, UKNG7 2RD
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35
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Diederich F, Stump B, C. Kohler P, Bernd Schweizer W. Synthesis of 2,4,5-Trisubstituted Thiazoles with a 5-(N,N-Dimethylaminomethyl) Substituent. HETEROCYCLES 2007. [DOI: 10.3987/com-06-s(k)15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Alvarado C, Díaz E, Guzmán Á. Total synthesis of ulongamide A, a cyclic depsipeptide isolated from marine cyanobacteria Lyngbya sp. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.117] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Kishore Kumar G, Saenz D, Lokesh G, Natarajan A. Microwave-assisted cleavage of phosphate, phosphonate and phosphoramide esters. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.06.126] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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38
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König GM, Kehraus S, Seibert SF, Abdel-Lateff A, Müller D. Natural products from marine organisms and their associated microbes. Chembiochem 2006; 7:229-38. [PMID: 16247831 DOI: 10.1002/cbic.200500087] [Citation(s) in RCA: 164] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The marine environment is distinguished by unique groups of organisms being the source of a wide array of fascinating structures. The enormous biodiversity of marine habitats is mirrored by the molecular diversity of secondary metabolites found in marine animals, plants and microbes. The recognition that many marine invertebrates contain endo- and epibiotic microorganisms and that some invertebrate-derived natural products are structurally related to bacterial metabolites suggests a microbial origin for some of these compounds. Other marine natural products, however, are clearly located in invertebrate tissue and microbial involvement in the biosynthetic process seems unlikely. The complexity of associations in marine organisms, especially in sponges, bryozoans and tunicates, makes it extremely difficult to definitively state the biosynthetic source of many marine natural products or to deduce their ecological significance. Whereas many symbiotic marine microorganisms cannot be isolated and cultured, numerous epi- and endobiotic marine fungi produce novel secondary metabolites in laboratory cultures. The potent biological activity of many marine natural products is of relevance for their ecological function but is also the basis of their biomedical importance.
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Affiliation(s)
- Gabriele M König
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany.
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39
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Hamada Y, Shioiri T. Recent progress of the synthetic studies of biologically active marine cyclic peptides and depsipeptides. Chem Rev 2006; 105:4441-82. [PMID: 16351050 DOI: 10.1021/cr0406312] [Citation(s) in RCA: 218] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasumasa Hamada
- Graduate School of Pharmaceutical Sciences, Chiba University, Yayoi-cho, Inage-ku, Japan.
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40
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Boumendjel A, Baubichon-Cortay H, Trompier D, Perrotton T, Di Pietro A. Anticancer multidrug resistance mediated by MRP1: recent advances in the discovery of reversal agents. Med Res Rev 2005; 25:453-72. [PMID: 15834856 DOI: 10.1002/med.20032] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Multidrug resistance protein 1 (MRP1) belongs to the ATP-binding cassette (ABC) transporter family. It is able to transport a broad range of anticancer drugs through cellular membranes, thus limiting their antiproliferative action. Since its discovery in 1992, MRP1 has been the most studied among MRP proteins, which now count nine members. Besides the biological work, which targets structure elucidation, binding sites location, and mode of action, most efforts have been focused on finding molecules which act as MRP1 inhibitors. In this review, we attempt to summarize and highlight studies dealing with modulators of MRP1-mediated multidrug resistance (MDR), which have been accomplished in the last 5 years. The reported MRP1 inhibitors are discussed according to their chemical class. Finally, we try to bring information on structure-activity relationship (SAR) aspects and how modulators might interact with MRP1. This study may facilitate the rational design of future modulators of MDR.
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Affiliation(s)
- Ahcène Boumendjel
- Département de Pharmacochimie Moléculaire, UMR 5063 CNRS/Université Joseph Fourier-Grenoble I, 5 Avenue de Verdun BP 138, 38243 Meylan, France. Ahcène.Boumendjelujf-grenoble.fr
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41
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Yonezawa Y, Tani N, Shin CG. Total Synthesis of Bistratamides G and H from Various Kinds of ΔAla and ΔAbu-Containing Oligopeptides. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.1492] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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43
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You SL, Deechongkit S, Kelly JW. Solid-phase synthesis and stereochemical assignments of tenuecyclamides A-D employing heterocyclic amino acids derived from commercially available Fmoc alpha-amino acids. Org Lett 2005; 6:2627-30. [PMID: 15255707 DOI: 10.1021/ol049020m] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] The solid-phase assembly of heterocyclic amino acids enabled the total synthesis of numerous diastereoisomers of tenuecyclamides A-D, establishing or correcting the stereochemistry of each natural product. This strategy provides a very efficient route to synthesize thiazole- and oxazole-containing macrolactams from heterocyclic amino acids that are readily prepared from Fmoc-alpha-amino acids. This methodology appears to be broadly applicable to the synthesis of natural product libraries incorporating unnatural heterocyclic amino acid residues for the purpose of drug discovery.
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Affiliation(s)
- Shu-Li You
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California 92037, USA
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44
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45
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Sawicka M, Kalinowska M, Skierski J, Lewandowski W. A review of selected anti-tumour therapeutic agents and reasons for multidrug resistance occurrence. J Pharm Pharmacol 2004; 56:1067-81. [PMID: 15324475 DOI: 10.1211/0022357044265] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
It is assumed that proteins from the ABC family (i.e., glycoprotein P (Pgp)) and a multidrug resistance associated protein (MRP) play a main role in the occurrence of multidrug resistance (MDR) in tumour cells. Other factors that influence the rise of MDR are mechanisms connected with change in the effectiveness of the glutathione cycle and with decrease in expression of topoisomerases I and II. The aim of this review is to characterize drugs applied in anti-tumour therapy and to describe the present state of knowledge concerning the mechanisms of MDR occurrence, as well as the pharmacological agents applied in reducing this phenomenon.
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Affiliation(s)
- M Sawicka
- Department of Chemistry, Biatystok Technical University, Zamenhofa 29, 15-435 Biatystok, Poland
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46
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47
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Matsushita H, Lee SH, Yoshida K, Clapham B, Koch G, Zimmermann J, Janda KD. N−H Insertion Reactions of Boc-Amino Acid Amides: Solution- and Solid-Phase Synthesis of Pyrazinones and Pyrazines. Org Lett 2004; 6:4627-9. [PMID: 15548092 DOI: 10.1021/ol047933a] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of alpha-diazo-beta-ketoesters were reacted with Boc amino acid amides in the presence of rhodium octanoate catalyst. The resulting N-H insertion products were treated with acid, providing the 1,4-azine intermediates, which were oxidized by air to form the corresponding pyrazine-6-one products. The pyrazine-6-ones were further derivatized by N-alkylation or by conversion to the arylpyrazines using sequential bromination and Suzuki coupling reactions. [reaction: see text]
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Affiliation(s)
- Hana Matsushita
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
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48
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Palacios F, Ochoa de Retana AM, Gil JI, Alonso JM. Regioselective synthesis of 4- and 5-oxazole-phosphine oxides and -phosphonates from 2H-azirines and acyl chlorides. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.07.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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49
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Synthesis of new central and planar chiral enantiomerically pure 5-ferrocenyl-oxazolines and a 5-ferrocenyl-thiazoline. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.02.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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You SL, Kelly JW. Total Synthesis of Dendroamide A: Oxazole and Thiazole Construction Using an Oxodiphosphonium Salt. J Org Chem 2003; 68:9506-9. [PMID: 14629183 DOI: 10.1021/jo0302657] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The total synthesis of dendroamide A (1), a multidrug-resistance reversing bistratamide-type peptide-derived macrocycle, has been accomplished in 19% yield. Fmoc-protected amino acids were condensed into appropriately protected dipeptides which were treated with bis(triphenyl)oxodiphosphonium trifluoromethanesulfonate to afford oxazoles and thiazolines (oxidized to thiazoles) with high chemo- and stereoselectivity. The convergent condensation of three heterocyclic amino acids followed by macrocyclization afforded the natural product.
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Affiliation(s)
- Shu-Li You
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California 92037, USA
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