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Vasilevsky SF, Stepanov AA. Acetylene derivatives of quinones and their transformation products: methods of synthesis, reactivity and applied aspects. RUSSIAN CHEMICAL REVIEWS 2022. [DOI: 10.1070/rcr5020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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2
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Aly AA, Hassan AA, Mostafa SM, Mohamed AH, Osman EM, Nayl AA. Heterocycles from cyclopropenones. RSC Adv 2022; 12:18615-18645. [PMID: 35873324 PMCID: PMC9229296 DOI: 10.1039/d2ra03011j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 06/02/2022] [Indexed: 11/21/2022] Open
Abstract
Great attention has been paid to cyclopropenones as they are present in many natural sources.
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Affiliation(s)
- Ashraf A. Aly
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
| | - Alaa A. Hassan
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
| | - Sara M. Mostafa
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
| | - Asmaa. H. Mohamed
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
| | - Esraa M. Osman
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
| | - AbdElAziz A. Nayl
- Department of Chemistry, College of Science, Jouf University, P. O. Box 2014, Sakaka, Aljouf, Saudi Arabia
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3
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Singha M, Bhattacharya P, Ray D, Basak A. Sterically hindering the trajectory of nucleophilic attack towards p-benzynes by a properly oriented hydrogen atom: an approach to achieve regioselectivity. Org Biomol Chem 2021; 19:5148-5154. [PMID: 34032259 DOI: 10.1039/d1ob00521a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nucleophilic addition to p-benzynes derived via Bergman cyclization has become a topic of keen interest. Studying the regioselectivity in such addition can reveal important information regarding the parameters controlling such addition. Recently, high regioselectivity has been achieved in nucleophilic addition to a p-benzyne derived from an ortho substituted benzo fused cyclic azaenediyne. Rather than having a freely rotating substitution, a rigid hydrogen atom coming from a suitable naptho fused enediyne and residing in the plane of the p-benzyne ring can offer hindrance to the trajectory of the nucleophile. This can lead to regioselectivity provided the other side remains relatively free of such hindrance. Based on that approach, halide addition to p-benzynes derived from naphtho fused cyclic azaenediynes was studied and a high level of regioselectivity was observed. Steric hindrance to the trajectory of nucleophile by the bay hydrogen was found to be the main cause of such regioselectivity; however, differential electrostatic potential as well as distortions at reactive centres have a minor role in controlling the regioselectivity. The products of such high yielding addition are the halo naphtho tetrahydroisoquinolines.
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Affiliation(s)
- Monisha Singha
- Department of Chemistry, Indian Institute of Technology, Kharagpur721302, India.
| | | | - Debashis Ray
- Department of Chemistry, Indian Institute of Technology, Kharagpur721302, India.
| | - Amit Basak
- Department of Chemistry, Indian Institute of Technology, Kharagpur721302, India. and School of Bioscience, Indian Institute of Technology, Kharagpur721302, India
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Léger SJ, Marchetti B, Ashfold MNR, Karsili TNV. The Role of Norrish Type-I Chemistry in Photoactive Drugs: An ab initio Study of a Cyclopropenone-Enediyne Drug Precursor. Front Chem 2020; 8:596590. [PMID: 33425854 PMCID: PMC7793749 DOI: 10.3389/fchem.2020.596590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/25/2020] [Indexed: 01/01/2023] Open
Abstract
We present a contemporary mechanistic description of the light-driven conversion of cyclopropenone containing enediyne (CPE) precusors to ring-opened species amenable to further Bergman cyclization and formation of stable biradical species that have been proposed for use in light-induced cancer treatment. The transformation is rationalized in terms of (purely singlet state) Norrish type-I chemistry, wherein photoinduced opening of one C-C bond in the cyclopropenone ring facilitates non-adiabatic coupling to high levels of the ground state, subsequent loss of CO and Bergman cyclization of the enediyne intermediate to the cytotoxic target biradical species. Limited investigations of substituent effects on the ensuing photochemistry serve to vindicate the experimental choices of Popik and coworkers (J. Org. Chem., 2005, 70, 1297-1305). Specifically, replacing the phenyl moiety in the chosen model CPE by a 1,4-benzoquinone unit leads to a stronger, red-shifted parent absorption, and increases the exoergicity of the parent → biradical conversion.
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Affiliation(s)
- Spencer J. Léger
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA, United States
- Department of Chemical Engineering, University of Louisiana at Lafayette, Lafayette, LA, United States
| | - Barbara Marchetti
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA, United States
| | | | - Tolga N. V. Karsili
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA, United States
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Danilkina NA, D'yachenko AS, Govdi AI, Khlebnikov AF, Kornyakov IV, Bräse S, Balova IA. Intramolecular Nicholas Reactions in the Synthesis of Heteroenediynes Fused to Indole, Triazole, and Isocoumarin. J Org Chem 2020; 85:9001-9014. [PMID: 32506914 DOI: 10.1021/acs.joc.0c00930] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The applicability of an intramolecular Nicholas reaction for the preparation of 10-membered O- and N-enediynes fused to indole, 1,2,3-triazole, and isocoumarin was investigated. The general approach to acyclic enediyne precursors fused to heterocycles includes inter- and intramolecular buta-1,3-diyne cyclizations with the formation of iodoethynylheterocycles, followed by Sonogashira coupling. The nature of both a heterocycle and a nucleophilic group affects the possibility of a 10-membered ring closure by the Nicholas reaction. Among oxacycles, an isocoumarin-fused enediyne was obtained. In the case of O-enediyne annulated with indole, instead of the formation of a 10-membered cycle, BF3-promoted addition of an OH-group to the proximal triple bond at the C3 position afforded dihydrofuryl-substituted indole. For 1,2,3-triazole-fused analogues, using NH-Ts as a nucleophilic functional group allowed obtaining 10-membered azaenediyne, while the substrate with a hydroxyl group gave only traces of the desired 10-membered oxacycle. An improved method for the deprotection of Co-complexes of cyclic enediynes using tetrabutylammonium fluoride in an acetone/water mixture and the investigation of the 10-membered enediynes' reactivity in the Bergman cyclization are also reported. In the solid state, all synthesized iodoethynylheterocycles were found to be involved in halogen bond (XB) formation with either O or N atoms as XB acceptors.
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Affiliation(s)
- Natalia A Danilkina
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander S D'yachenko
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I Govdi
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander F Khlebnikov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Ilya V Kornyakov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.,Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A Balova
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
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Mishiro K, Kimura T, Furuyama T, Kunishima M. Phototriggered Active Alkyne Generation from Cyclopropenones with Visible Light-Responsive Photocatalysts. Org Lett 2019; 21:4101-4105. [DOI: 10.1021/acs.orglett.9b01280] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kenji Mishiro
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takeshi Kimura
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University,
Kakuma-machi, Kanazawa 920-1192, Japan
| | - Taniyuki Furuyama
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Munetaka Kunishima
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University,
Kakuma-machi, Kanazawa 920-1192, Japan
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8
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Alabugin A. Near-IR Photochemistry for Biology: Exploiting the Optical Window of Tissue. Photochem Photobiol 2019; 95:722-732. [PMID: 30536737 DOI: 10.1111/php.13068] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 12/02/2018] [Indexed: 01/04/2023]
Abstract
Photoactive molecules enable much of modern biology and biochemistry-a vast library of fluorescent chromophores is used to track and label cellular structures and macromolecules. However, photochemistry is better known to the synthetic or physical organic chemist as a "light switch" that turns on unusual excited-state reactivity, isomerization, or dynamic adjustment of structure. This review details a rapidly growing approach to biophotochemistry that uses low-energy near-IR wavelengths not only for imaging, but also for close spatial control over chemical switching events in biosystems. Emphasis is placed on topics of biomedical interest: release of gaseous biological messengers, uncaging of drugs, nano-therapeutics, and modification of biomaterials.
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Affiliation(s)
- Alexander Alabugin
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA
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9
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Bhattacharya P, Basak A, Campbell A, Alabugin IV. Photochemical Activation of Enediyne Warheads: A Potential Tool for Targeted Antitumor Therapy. Mol Pharm 2018; 15:768-797. [DOI: 10.1021/acs.molpharmaceut.7b00911] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
| | - Amit Basak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Adam Campbell
- Department of Chemistry & Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Igor V. Alabugin
- Department of Chemistry & Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
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10
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Das J, Roy S, Halnor S, Das AK, Basak A. Enediyne-based protein capture agents: demonstration of an enediyne moiety acting as a photoaffinity label. Org Biomol Chem 2017; 15:1122-1129. [DOI: 10.1039/c6ob02075e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two enediyne based protein-capture compounds 1 and 2 were synthesized.
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Affiliation(s)
- Joyee Das
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Sayantani Roy
- School of Bioscience
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Swapnil Halnor
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Amit Kumar Das
- School of Bioscience
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Amit Basak
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
- School of Bioscience
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11
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Aitken RA, Jethwa SJ, Richardson NV, Slawin AM. Regioselective bromination of 1,4-dimethoxy-2,3-dimethylbenzene and conversion into sulfur-functionalised benzoquinones. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Sutton DA, Yu SH, Steet R, Popik VV. Cyclopropenone-caged Sondheimer diyne (dibenzo[a,e]cyclooctadiyne): a photoactivatable linchpin for efficient SPAAC crosslinking. Chem Commun (Camb) 2016; 52:553-6. [PMID: 26538499 PMCID: PMC4689622 DOI: 10.1039/c5cc08106h] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The first fully conjugated bis-cyclopropenone (photo-DIBOD), a derivative of dibenzo[a,e][8]annulene, has been synthesized. 350-420 nm irradiation of this robust compound results in the efficient formation of dibenzo [a,e] cyclooctadiyne, an unstable, but useful SPAAC cross-linking reagent. Since photo-DIBO doesn't react with organic azides, this method allows for the spatiotemporal control of the ligation of two azide-tagged substrates.
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Affiliation(s)
- Dewey A Sutton
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA.
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Raviola C, Protti S, Ravelli D, Fagnoni M. (Hetero)aromatics from dienynes, enediynes and enyne–allenes. Chem Soc Rev 2016; 45:4364-90. [DOI: 10.1039/c6cs00128a] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Recent advances in the synthesis of (hetero)aromatics starting from polyenes, such as dienynes, enediynes and enyne–allenes, are discussed.
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14
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Danilkina NA, Kulyashova AE, Khlebnikov AF, Bräse S, Balova IA. Electrophilic Cyclization of Aryldiacetylenes in the Synthesis of Functionalized Enediynes Fused to a Heterocyclic Core. J Org Chem 2014; 79:9018-45. [DOI: 10.1021/jo501396s] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- N. A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - A. E. Kulyashova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - A. F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
| | - S. Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute of Technology, Campus South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - I. A. Balova
- Institute
of Chemistry, Saint Petersburg State University, Universitetskiy pr. 26, 198504 Saint Petersburg, Russia
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Liu L, Xia S, Fang WH. Photodecarbonylation Mechanism of Cyclopropenone in the Gas Phase: Electronic Structure Calculation and AIMS Dynamics Simulation. J Phys Chem A 2014; 118:8977-85. [DOI: 10.1021/jp5019923] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lihong Liu
- Key Laboratory
of Theoretical
and Computational Photochemistry Ministry of Education College of
Chemistry, Beijing Normal University, Beijing 100875, China
| | - Shuhua Xia
- Key Laboratory
of Theoretical
and Computational Photochemistry Ministry of Education College of
Chemistry, Beijing Normal University, Beijing 100875, China
| | - Wei-Hai Fang
- Key Laboratory
of Theoretical
and Computational Photochemistry Ministry of Education College of
Chemistry, Beijing Normal University, Beijing 100875, China
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Wender PA. Toward the Ideal Synthesis and Transformative Therapies: The Roles of Step Economy and Function Oriented Synthesis. Tetrahedron 2013; 69:7529-7550. [PMID: 23956471 PMCID: PMC3743450 DOI: 10.1016/j.tet.2013.06.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Paul A Wender
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford CA 94305-5080 USA
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Spence JD, Rios AC, Frost MA, McCutcheon CM, Cox CD, Chavez S, Fernandez R, Gherman BF. Syntheses, thermal reactivities, and computational studies of aryl-fused quinoxalenediynes: effect of extended benzannelation on Bergman cyclization energetics. J Org Chem 2012; 77:10329-39. [PMID: 23067009 DOI: 10.1021/jo302009c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A series of [b]-fused 6,7-diethynylquinoxaline derivatives have been synthesized through an imine condensation strategy to examine the effect of extended benzannelation on the thermal reactivity of enediynes. Absorption and emission spectra of the highly conjugated quinoxalenediynes were red-shifted approximately 100-200 nm relative to those of 1,2-diethynylbenzene. Strong exotherms indicative of enediyne cyclization were observed by differential scanning calorimetry, while solution cyclizations in the presence of 1,4-cyclohexadiene confirmed C(1)-C(6) Bergman cyclization. To provide further insight into Bergman cyclization energetics, computational studies were performed to compare changes in the cyclization enthalpy barrier, reaction enthalpy, and barrier of retro-Bergman ring-opening. Extension of benzannelation from 1,2-diethynylbenzene to either 2,3-diethynylnaphthalene or the 6,7-diethynylquinoxalines had a minimal effect on the cyclization barrier. In comparison, the enthalpies of cyclization were increased upon linearly extended benzannelation, which resulted in reduced barriers to retro-Bergman ring-opening. In addition, the orientation of extended benzannelation was found to have a significant effect on the cyclization endothermicity. In particular, 5,6-diethynylquinoxaline exhibited a 6.9 kcal/mol decrease in cyclization enthalpy compared to 6,7-diethynylquinoxaline due to increased aromatic stabilization energy in the respective angularly versus linearly fused azaacene cyclized products.
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Affiliation(s)
- John D Spence
- Department of Chemistry, California State University, Sacramento, Sacramento, California 95819, USA.
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Danilkina N, Nieger M, Selivanov S, Bräse S, Balova I. Electrophilic Cyclization and Ring-Closing Metathesis as Key Steps in the Synthesis of a 12-Membered Cyclic Enediyne. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200881] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Breiner B, Kaya K, Roy S, Yang WY, Alabugin IV. Hybrids of amino acids and acetylenic DNA-photocleavers: optimising efficiency and selectivity for cancer phototherapy. Org Biomol Chem 2012; 10:3974-87. [DOI: 10.1039/c2ob00052k] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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20
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Yang WY, Roy S, Phrathep B, Rengert Z, Kenworthy R, Zorio DAR, Alabugin IV. Engineering pH-Gated Transitions for Selective and Efficient Double-Strand DNA Photocleavage in Hypoxic Tumors. J Med Chem 2011; 54:8501-16. [DOI: 10.1021/jm2010282] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Wang-Yong Yang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Saumya Roy
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Boondaniwon Phrathep
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Zach Rengert
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Rachael Kenworthy
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Diego A. R. Zorio
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Igor V. Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
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Zhu B, Qian G, Xiao Y, Deng S, Wang M, Hu A. A convergence of photo-bergman cyclization and intramolecular chain collapse towards polymeric nanoparticles. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25013] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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22
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Xiao Y, Hu A. Bergman Cyclization in Polymer Chemistry and Material Science. Macromol Rapid Commun 2011; 32:1688-98. [DOI: 10.1002/marc.201100378] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Indexed: 11/11/2022]
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23
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Zhegalova NG, Popik VV. Wolff rearrangement of β-alkynyl-α-diazo-β-ketoesters: light-induced acetylene-allene isomerization and its use for activation of enediynes. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Chromophores for the Delivery of Bioactive Molecules with Two-Photon Excitation. NEUROMETHODS 2011. [DOI: 10.1007/978-1-61779-031-7_4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Zhu B, Ma J, Li Z, Hou J, Cheng X, Qian G, Liu P, Hu A. Formation of polymeric nanoparticles via Bergman cyclization mediated intramolecular chain collapse. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03143g] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Poloukhtine AA, Mbua NE, Wolfert MA, Boons GJ, Popik VV. Selective labeling of living cells by a photo-triggered click reaction. J Am Chem Soc 2010; 131:15769-76. [PMID: 19860481 DOI: 10.1021/ja9054096] [Citation(s) in RCA: 299] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Phototriggering of the metal-free azide to acetylene cycloaddition reaction was achieved by masking the triple bond of dibenzocyclooctynes as cyclopropenone. Such masked cyclooctynes do not react with azides in the dark. Irradiation of cyclopropenones results in the efficient (Phi(355) = 0.33) and clean regeneration of the corresponding dibenzocyclooctynes, which then undergo facile catalyst-free cycloadditions with azides to give corresponding triazoles under ambient conditions. In situ light activation of a cyclopropenone linked to biotin made it possible to label living cells expressing glycoproteins containing N-azidoacetyl-sialic acid. The cyclopropenone-based phototriggered click chemistry offers exciting opportunities to label living organisms in a temporally and spatially controlled manner and may facilitate the preparation of microarrays.
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Polukhtine A, Karpov G, Pandithavidana DR, Kuzmin A, Popik VV. Photochemical Triggering of the Bergman and Myers - Saito Cyclizations. Aust J Chem 2010. [DOI: 10.1071/ch10185] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two strategies for the photochemical generation of reactive enediyne compounds and their subsequent cycloaromatization to p-benzyne or α,3-didehydrotoluene derivatives are discussed in this account. The first method employs a photo-Wolff reaction of stable 11- or 12-membered ring precursor enediynes containing the 2-diazo-1,3-diketone moiety. Irradiation of these compounds results in ring contraction and the formation of two isomeric enediynes possessing an enolized β-ketoester fragment. One of the isomers undergoes the conventional Bergman cyclization, whereas the other isomerizes into the enyne-allene tautomer, which rapidly cyclizes via a Myers–Saito mechanism. The second strategy consists of replacing the triple bond in a cyclic enediyne or enyne-allene structure with a cyclopropenone group, rendering them thermally stable. Photolysis of cyclopropenones results in efficient decarbonylation and the regeneration of a triple bond, restoring the enediyne π-system. The generation of reactive enediynes by non-resonant two-photon excitation using wavelengths within a ‘phototherapeutic window’ was also demonstrated. Photogenerated enediynes show significant nuclease activity, efficiently inducing single-strand dDNA cleavage.
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Cheng X, Ma J, Zhi J, Yang X, Hu A. Synthesis of Novel “Rod−Coil” Brush Polymers with Conjugated Backbones through Bergman Cyclization. Macromolecules 2009. [DOI: 10.1021/ma902176j] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xin Cheng
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jianguo Ma
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jian Zhi
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xi Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Aiguo Hu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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Yang WY, Breiner B, Kovalenko SV, Ben C, Singh M, LeGrand SN, Sang QXA, Strouse GF, Copland JA, Alabugin IV. C-lysine conjugates: pH-controlled light-activated reagents for efficient double-stranded DNA cleavage with implications for cancer therapy. J Am Chem Soc 2009; 131:11458-70. [PMID: 19637922 PMCID: PMC2771568 DOI: 10.1021/ja902140m] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Double-stranded DNA cleavage of light-activated lysine conjugates is strongly enhanced at the slightly acidic pH (<7) suitable for selective targeting of cancer cells. This enhancement stems from the presence of two amino groups of different basicities. The first amino group plays an auxiliary role by enhancing solubility and affinity to DNA, whereas the second amino group, which is positioned next to the light-activated DNA cleaver, undergoes protonation at the desired pH threshold. This protonation results in two synergetic effects which account for the increased DNA-cleaving ability at the lower pH. First, lysine conjugates show tighter binding to DNA at the lower pH, which is consistent with the anticipated higher degree of interaction between two positively charged ammonium groups with the negatively charged phosphate backbone of DNA. Second, the unproductive pathway which quenches the excited state of the photocleaver through intramolecular electron transfer is eliminated once the donor amino group next to the chromophore is protonated. Experiments in the presence of traps for diffusing radicals show that reactive oxygen species do not contribute significantly to the mechanism of DNA cleavage at the lower pH, which is indicative of tighter binding to DNA under these conditions. This feature is valuable not only because many solid tumors are hypoxic but also because cleavage which does not depend on diffusing species is more localized and efficient. Sequence-selectivity experiments suggest combination of PET and base alkylation as the chemical basis for the observed DNA damage. The utility of these molecules for phototherapy of cancer is confirmed by the drastic increase in toxicity of five conjugates against cancer cell lines upon photoactivation.
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Affiliation(s)
- Wang-Yong Yang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Boris Breiner
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Serguei V. Kovalenko
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Chi Ben
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Mani Singh
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Shauna N. LeGrand
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, Florida 32224
| | - Qing-Xiang Amy Sang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - Geoffrey F. Strouse
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
| | - John A. Copland
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, Florida 32224
| | - Igor V. Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, USA
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Pandithavidana DR, Poloukhtine A, Popik VV. Photochemical generation and reversible cycloaromatization of a nine-membered ring cyclic enediyne. J Am Chem Soc 2009; 131:351-6. [PMID: 19053819 DOI: 10.1021/ja8077076] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Irradiation of the nine-membered ring enediyne precursor, which has one of its triple bonds masked as cyclopropenone, efficiently (Phi = 0.34) generates the reactive 4,5-benzocyclonona-2,6-diynol. The latter rapidly equilibrates with the corresponding 1,4-didehydronaphthalene diradical and then undergoes rate-limiting hydrogen abstraction to produce the ultimate product of the Bergman cyclization, benz[f]indanol.
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31
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Preparation of enediyne-crosslinked networks and their reactivity under thermal and mechanical conditions. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.106] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Karpov G, Kuzmin A, Popik VV. Enhancement of the Reactivity of Photochemically Generated Enediynes via Keto−Enol Tautomerization. J Am Chem Soc 2008; 130:11771-7. [DOI: 10.1021/ja802688c] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Grigori Karpov
- Department of Chemistry, University of Georgia, Athens, Georgia 30602
| | - Alexander Kuzmin
- Department of Chemistry, University of Georgia, Athens, Georgia 30602
| | - Vladimir V. Popik
- Department of Chemistry, University of Georgia, Athens, Georgia 30602
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Sud D, Wigglesworth T, Branda N. Creating a Reactive Enediyne by Using Visible Light: Photocontrol of the Bergman Cyclization. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200703034] [Citation(s) in RCA: 13] [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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34
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Sud D, Wigglesworth TJ, Branda NR. Creating a Reactive Enediyne by Using Visible Light: Photocontrol of the Bergman Cyclization. Angew Chem Int Ed Engl 2007; 46:8017-9. [PMID: 17854016 DOI: 10.1002/anie.200703034] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- David Sud
- 4D LABS, Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
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Kar M, Basak A. Design, Synthesis, and Biological Activity of Unnatural Enediynes and Related Analogues Equipped with pH-Dependent or Phototriggering Devices. Chem Rev 2007; 107:2861-90. [PMID: 17590056 DOI: 10.1021/cr068399i] [Citation(s) in RCA: 177] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Moumita Kar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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