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Vo DV, Su S, Karmakar R, Lee D. Reactivity of Enyne-Allenes Generated via an Alder-Ene Reaction. Org Lett 2024; 26:1299-1303. [PMID: 38330294 DOI: 10.1021/acs.orglett.3c03696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Tandem transformations of 1,3-diynyl propiolate derivatives are described. The Alder-ene reaction generates an enyne-allene, which undergoes a formal 1,7-H shift or a Diels-Alder reaction, depending on the substituent on the alkyne. A terminal or aryl-substituted alkyne promotes a 1,7-H shift to generate a new enyne-allene, which undergoes a Myers-Saito cycloaromatization followed by a 1,5-H transfer-mediated cyclization to form highly functionalized benzo-fused 6-membered cycles. The reactivity of the preformed enyne-allene shows comparable reactivity profiles.
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Affiliation(s)
- Duy-Viet Vo
- Department of Chemistry, University of Illinois─Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Siyuan Su
- Department of Chemistry, University of Illinois─Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Rajdip Karmakar
- Department of Chemistry, University of Illinois─Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Daesung Lee
- Department of Chemistry, University of Illinois─Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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2
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Le A, Gupta S, Xu M, Xia Y, Lee D. Development of an Allenyne-Alkyne [4+2] Cycloaddition and its Application to Total Synthesis of Selaginpulvilin A. Chemistry 2022; 28:e202202015. [PMID: 35771213 PMCID: PMC9805236 DOI: 10.1002/chem.202202015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Indexed: 01/09/2023]
Abstract
A new [4+2] cycloaddition of allenyne-alkyne is developed. The reaction is believed to proceed with forming an α,3-dehydrotoluene intermediate. This species behaves as a σπ-diradical to react with a hydrogen atom donor, whereas it displays a zwitterionic reactivity toward weak nucleophiles. The efficiency of trapping α,3-dehydrotoluene depends not only on its substituents but also the trapping agents. Notable features of the reaction are the activating role of the extra alkyne of the 1,3-diyne that reacts with the allenyne moiety and the opposite mode of trapping with oxygen and nitrogen nucleophiles. Oxygen nucleophiles result in the oxygen-end incorporation at the benzylic position of the α,3-dehydrotoluene, whereas with amine nucleophiles the nitrogen-end is incorporated into the aromatic core. Relying on the allenyne-alkyne cycloaddition as an enabling strategy, a concise total synthesis of phosphodiesterase-4 inhibitory selaginpulvilin A is realized.
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Affiliation(s)
- Anh Le
- Department of ChemistryUniversity of Illinois Chicago845 West Taylor Street60607ChicagoIllinoisUSA
| | - Saswata Gupta
- Department of ChemistryUniversity of Illinois Chicago845 West Taylor Street60607ChicagoIllinoisUSA
| | - Man Xu
- College of Chemistry and Materials EngineeringWenzhou University325035WenzhouZhejiang ProvinceP. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials EngineeringWenzhou University325035WenzhouZhejiang ProvinceP. R. China
| | - Daesung Lee
- Department of ChemistryUniversity of Illinois Chicago845 West Taylor Street60607ChicagoIllinoisUSA
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3
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Das A, Ray D, Banik BK. Tellurium in carbohydrate synthesis. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this article, we discuss about the influence of tellurium in carbohydrate synthesis. Mainly the chapter focuses on the importance of the tellurium during the synthesis of glycosides and during the oxidation of glucose.
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Affiliation(s)
- Aparna Das
- Department of Mathematics and Natural Sciences, College of Sciences and Human Studies , Prince Mohammad Bin Fahd University , Al Khobar 31952 , Kingdom of Saudi Arabia
| | - Devalina Ray
- Amity Institute of Biotechnology, Amity University , Noida 201313 , UP , India
| | - Bimal Krishna Banik
- Department of Mathematics and Natural Sciences, College of Sciences and Human Studies , Prince Mohammad Bin Fahd University , Al Khobar 31952 , Kingdom of Saudi Arabia
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4
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Hifnawy MS, Fouda MM, Sayed AM, Mohammed R, Hassan HM, AbouZid SF, Rateb ME, Keller A, Adamek M, Ziemert N, Abdelmohsen UR. The genus Micromonospora as a model microorganism for bioactive natural product discovery. RSC Adv 2020; 10:20939-20959. [PMID: 35517724 PMCID: PMC9054317 DOI: 10.1039/d0ra04025h] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 05/28/2020] [Indexed: 11/21/2022] Open
Abstract
This review covers the development of the genus Micromonospora as a model for natural product research and the timeline of discovery progress from the classical bioassay-guided approaches through the application of genome mining and genetic engineering techniques that target specific products. It focuses on the reported chemical structures along with their biological activities and the synthetic and biosynthetic studies they have inspired. This survey summarizes the extraordinary biosynthetic diversity that can emerge from a widely distributed actinomycete genus and supports future efforts to explore under-explored species in the search for novel natural products.
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Affiliation(s)
- Mohamed S Hifnawy
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University Cairo Egypt 11787
| | - Mohamed M Fouda
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University Beni-Suef Egypt 62513
| | - Ahmed M Sayed
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University Beni-Suef Egypt 62513
| | - Rabab Mohammed
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef Egypt 62514
| | - Hossam M Hassan
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef Egypt 62514
| | - Sameh F AbouZid
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef Egypt 62514
| | - Mostafa E Rateb
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef Egypt 62514
- School of Computing, Engineering and Physical Sciences, University of the West of Scotland Paisley PA1 2BE UK
| | - Alexander Keller
- Center for Computational and Theoretical Biology, Biocenter, University of Würzburg Hubland Nord 97074 Würzburg Germany
| | - Martina Adamek
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, University of Tübingen Tübingen Germany
- German Centre for Infection Research (DZIF) Partner Site Tübingen Tübingen Germany
| | - Nadine Ziemert
- Interfaculty Institute of Microbiology and Infection Medicine Tübingen, University of Tübingen Tübingen Germany
- German Centre for Infection Research (DZIF) Partner Site Tübingen Tübingen Germany
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone P.O. Box 61111 New Minia City 61519 Minia Egypt
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5
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McMullen PD, Pendse S, Adeleye Y, Carmichael PL, Andersen ME, Clewell RA. Using Transcriptomics to Evaluate Thresholds in Genotoxicity Dose–Response. TOXICOGENOMICS IN PREDICTIVE CARCINOGENICITY 2016. [DOI: 10.1039/9781782624059-00185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Several genotoxic chemicals have been reported to produce threshold-shaped dose–response curves for mutation and genotoxicity assays, both in vivo and in vitro, challenging the current default practice for risk assessment of genotoxic chemicals, which assumes a linear dose–response below the lowest tested dose. Statistical methods cannot determine whether a biological threshold exists with sufficient confidence to overturn this assumption of linearity. Indeed, to truly define the shape of the dose–response curves, we must look to the underlying biology and develop targeted experiments to identify and measure the key processes governing the response of the cell to DNA damage. This chapter describes a series of studies aimed at defining the key transcriptional responses. Two approaches were taken to evaluate transcriptional responses preventing micronucleus induction: (1) comparison of gene signatures for several prototype compounds at a single chemical dose that led to a similar activation of the p53-DNA damage pathway (i.e. 1.5-fold increase in total p53); and (2) evaluation of a subset of chemicals with in-depth dose–response studies. The goal of these efforts was to determine the transcriptional pathways responsible for maintaining homeostasis at low levels of DNA damage, i.e., the biological underpinning of threshold-shaped dose–response curves for mutagenicity.
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Affiliation(s)
| | - Salil Pendse
- The Hamner Institutes for Health Sciences Research Triangle Park NC USA
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Nicolaou KC, Wang Y, Lu M, Mandal D, Pattanayak MR, Yu R, Shah AA, Chen JS, Zhang H, Crawford JJ, Pasunoori L, Poudel YB, Chowdari NS, Pan C, Nazeer A, Gangwar S, Vite G, Pitsinos EN. Streamlined Total Synthesis of Uncialamycin and Its Application to the Synthesis of Designed Analogues for Biological Investigations. J Am Chem Soc 2016; 138:8235-46. [DOI: 10.1021/jacs.6b04339] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. C. Nicolaou
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yanping Wang
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Min Lu
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Debashis Mandal
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Manas R. Pattanayak
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ruocheng Yu
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Akshay A. Shah
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Jason S. Chen
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Hongjun Zhang
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - James J. Crawford
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Laxman Pasunoori
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yam B. Poudel
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Naidu S. Chowdari
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Chin Pan
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Ayesha Nazeer
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Sanjeev Gangwar
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Gregory Vite
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543-4000, United States
| | - Emmanuel N. Pitsinos
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Laboratory of Natural Products Synthesis & Bioorganic Chemistry, Institute of Nanoscience & Nanotechnology, National Centre of Scientific Research “Demokritos”, Agia Paraskevi GR-15310, Greece
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7
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Dantas CR, de Freitas JJR, Barbosa QPS, Militão GCG, Silva TDS, da Silva TG, Paulino AAS, Freitas JCR, Oliveira RA, Menezes PH. Stereoselective synthesis and antitumoral activity of Z-enyne pseudoglycosides. Org Biomol Chem 2016; 14:6786-94. [DOI: 10.1039/c6ob00945j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The stereoselective synthesis and antitumoral activity of Z-enyne pseudoglycosides is described.
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HIRAMA M. Total synthesis and related studies of large, strained, and bioactive natural products. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2016; 92:290-329. [PMID: 27725470 PMCID: PMC5243947 DOI: 10.2183/pjab.92.290] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 08/10/2016] [Indexed: 06/06/2023]
Abstract
Our chemical syntheses and related scientific investigations of natural products with complex architectures and powerful biological activities are described, focusing on the very large 3 nm-long polycyclic ethers called the ciguatoxins, highly strained and labile chromoprotein antitumor antibiotics featuring nine-membered enediyne cores, and extremely potent anthelmintic macrolides called the avermectins.
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Affiliation(s)
- Masahiro HIRAMA
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
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9
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Davies SG, Fletcher AM, Foster EM, Lee JA, Roberts PM, Thomson JE, Waul MA. Asymmetric syntheses of the methyl glycosides of 2-deoxy-2-aminohexoses: d-allosamine, d-mannosamine, d-idosamine and d-talosamine. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Unexpected formation of (Z)-3-(halomethylene)isoindolinones from gem-dihalovinylbenzonitriles: efficient synthesis of enyne-containing isoindolinones. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.143] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Atta AK, Pathak T. A Tandem Michael-SN2-Mediated General Route to Six-Membered Heterocycles and Carbocycles. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000941] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Affiliation(s)
- Stéphane P. Roche
- Department of Chemistry, Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
| | - David J. Aitken
- Université Paris‐Sud 11, Laboratoire de Synthèse Organique & Méthodologie, ICMMO (CNRS UMR 8182), 15 rue Georges Clemenceau, 91405 Orsay cedex, France, Fax: +33‐1‐69156278
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14
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Sato I, Hirama M. Recent Advances in the Synthetic Studies of Nine-membered Enediyne Antitumor Antibiotics. J SYN ORG CHEM JPN 2010. [DOI: 10.5059/yukigoseikyokaishi.68.1123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Liang ZX. Complexity and simplicity in the biosynthesis of enediyne natural products. Nat Prod Rep 2010; 27:499-528. [DOI: 10.1039/b908165h] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
The last one hundred years have witnessed a dramatic increase in the power and reach of total synthesis. The pantheon of accomplishments in the field includes the total synthesis of molecules of unimaginable beauty and diversity such as the four discussed in this article: endiandric acids (1982), calicheamicin gamma(1)(I) (1992), Taxol (1994), and brevetoxin B (1995). Chosen from the collection of the molecules synthesized in the author's laboratories, these structures are but a small fraction of the myriad constructed in laboratories around the world over the last century. Their stories, and the background on which they were based, should serve to trace the evolution of the art of chemical synthesis to its present sharp condition, an emergence that occurred as a result of new theories and mechanistic insights, new reactions, new reagents and catalysts, and new synthetic technologies and strategies. Indeed, the advent of chemical synthesis as a whole must be considered as one of the most influential developments of the twentieth century in terms of its impact on society.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
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17
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Iso K, Inoue M, Kato N, Hirama M. Synthesis of the Bicyclo[7.3.0]dodecadiyne Core of the Maduropeptin Chromophore. Chem Asian J 2008; 3:447-53. [DOI: 10.1002/asia.200700310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Baker JR, Woolfson DN, Muskett FW, Stoneman RG, Urbaniak MD, Caddick S. Protein–Small Molecule Interactions in Neocarzinostatin, the Prototypical Enediyne Chromoprotein Antibiotic. Chembiochem 2007; 8:704-17. [PMID: 17451164 DOI: 10.1002/cbic.200600534] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The enediyne chromoproteins are a class of potent antitumour antibiotics comprising a 1:1 complex of a protein and a noncovalently bound chromophore. The protein is required to protect and transport the highly labile chromophore, which acts as the cytotoxic component by reacting with DNA leading to strand cleavage. A derivative of the best-studied member of this class, neocarzinostatin (NCS), is currently in use as a chemotherapeutic in Japan. The application of the chromoproteins as therapeutics along with their unique mode of action has prompted widespread interest in this area. Notable developments include the discovery of non-natural ligands for the apoproteins and the observation that multiple binding modes are available for these ligands in the binding site. Mutation studies on the apoproteins have revealed much about their stability and variability, and the application of an in vitro evolution method has conferred new binding specificity for unrelated ligands. These investigations hold great promise for the application of the apoproteins for drug-delivery, transport and stabilisation systems.
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Affiliation(s)
- James R Baker
- University College London, Department of Chemistry, Christopher Ingold Laboratories, 20 Gordon Street, London, WC1H 0AJ, UK
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Mercs L, Pozzi G, Quici S. Efficient condensation of carboxylic acids with alcohols catalyzed by fluorous ammonium triflates. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.02.117] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Thominet O, Baker JR, Britton H, Etheridge ZC, Soscia MG, Caddick S. Synthetic strategies to epoxydiynes and a key synthon of the neocarzinostatin chromophore. Org Biomol Chem 2007; 5:3703-12. [DOI: 10.1039/b711196g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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