1
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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2
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Oyamada Y, Inaba K, Sasamori T, Nakamura S. Enantioselective reaction of N-cyano imines: decarboxylative Mannich-type reaction with malonic acid half thioesters. Chem Commun (Camb) 2022; 58:2172-2175. [PMID: 35060982 DOI: 10.1039/d1cc07191b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enantioselective reaction of imines bearing a cyano group as an activating group with malonic acid half thioesters gave chiral cyanamide derivatives with high enantioselectivity. The density functional theory (DFT) calculation clarified the stereochemical outcome and importance of the N-cyano group for imines.
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Affiliation(s)
- Yusuke Oyamada
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.
| | - Kazuto Inaba
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.
| | - Takahiro Sasamori
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan. .,Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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3
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Kumar N, Goel N. Recent development of imidazole derivatives as potential anticancer agents. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract
Cancer, one of the key health problems globally, is a group of related diseases that share a number of characteristics primarily the uncontrolled growth and invasive to surrounding tissues. Chemotherapy is one of the ways for the treatment of cancer which uses one or more anticancer agents as per chemotherapy regimen. Limitations of most anticancer drugs due to a variety of reasons such as serious side effects, drug resistance, lack of sensitivity and efficacy etc. generate the necessity towards the designing of novel anticancer lead molecules. In this regard, the synthesis of biologically active heterocyclic molecules is an appealing research area. Among heterocyclic compounds, nitrogen containing heterocyclic molecules has fascinated tremendous consideration due to broad range of pharmaceutical activity. Imidazoles, extensively present in natural products as well as synthetic molecules, have two nitrogen atoms, and are five membered heterocyclic rings. Because of their countless physiological and pharmacological characteristics, medicinal chemists are enthused to design and synthesize new imidazole derivatives with improved pharmacodynamic and pharmacokinetic properties. The aim of this present chapter is to discuss the synthesis, chemistry, pharmacological activity, and scope of imidazole-based molecules in anticancer drug development. Finally, we have discussed the current challenges and future perspectives of imidazole-based derivatives in anticancer drug development.
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Affiliation(s)
- Naresh Kumar
- Department of Biosciences and Biomedical Engineering , Indian Institute of Technology Indore , Indore , Madhya Pradesh 453552 , India
| | - Nidhi Goel
- Department of Chemistry , Institute of Science, Banaras Hindu University , Varanasi , Uttar Pradesh 221005 , India
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4
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Zhang P, Zhou Z, Zhang R, Zhao Q, Zhang C. Cu-Catalyzed highly regioselective 1,2-hydrocarboxylation of 1,3-dienes with CO 2. Chem Commun (Camb) 2020; 56:11469-11472. [PMID: 32856640 DOI: 10.1039/d0cc05056c] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical copper-catalyzed highly regioselective 1,2-hydrocarboxylation of terminal 1,3-diene with carbon dioxide has been developed. Under mild reaction conditions, this chemistry afforded 2-benzyl-β,γ-unsaturated acid derivatives as products, which are a kind of important unit for bio-active molecules and versatile precursors for organic synthesis, with good functional group tolerance. The key intermediate in this transformation is illustrated by control experiments.
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Affiliation(s)
- Penglin Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Sciences, Tianjin University, Weijin Rd. 92, Tianjin 300072, China.
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5
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
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6
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
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7
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Lui EKJ, Brandt JW, Schafer LL. Regio- and Stereoselective Hydroamination of Alkynes Using an Ammonia Surrogate: Synthesis of N-Silylenamines as Reactive Synthons. J Am Chem Soc 2018. [PMID: 29528631 DOI: 10.1021/jacs.7b13783] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An anti-Markovnikov selective hydroamination of alkynes with N-silylamines to afford N-silylenamines is reported. The reaction is catalyzed by a bis(amidate)bis(amido)Ti(IV) catalyst and is compatible with a variety of terminal and internal alkynes. Stoichiometric mechanistic studies were also performed. This method easily affords interesting N-silylenamine synthons in good to excellent yields and the easily removable silyl protecting group enables the catalytic synthesis of primary amines.
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Affiliation(s)
- Erica K J Lui
- Department of Chemistry , University of British Columbia , 2036 Main Mall , Vancouver , British Columbia , Canada V6T 1Z1
| | - Jason W Brandt
- Department of Chemistry , University of British Columbia , 2036 Main Mall , Vancouver , British Columbia , Canada V6T 1Z1
| | - Laurel L Schafer
- Department of Chemistry , University of British Columbia , 2036 Main Mall , Vancouver , British Columbia , Canada V6T 1Z1
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8
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Cao YN, Zheng LL, Wang D, Liang XX, Gao F, Zhou XL. Recent advances in microtubule-stabilizing agents. Eur J Med Chem 2017; 143:806-828. [PMID: 29223097 DOI: 10.1016/j.ejmech.2017.11.062] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 11/04/2017] [Accepted: 11/22/2017] [Indexed: 10/18/2022]
Abstract
Highly dynamic mitotic spindle microtubules are superb therapeutic targets for a group of chemically diverse and clinically successful anticancer drugs. Microtubule-targeted drugs disrupt microtubule dynamics in distinct ways, and they are primarily classified into two groups: microtubule destabilizing agents (MDAs), such as vinblastine, colchicine, and combretastatin-A4, and microtubule stabilizing agents (MSAs), such as paclitaxel and epothilones. Systematic discovery and development of new MSAs have been aided by extensive research on paclitaxel, yielding a large number of promising anticancer compounds. This review focuses on the natural sources, structural features, mechanisms of action, structure-activity relationship (SAR) and chemical synthesis of MSAs. These MSAs mainly include paclitaxel, taccalonolides, epothilones, FR182877 (cyclostreptin), dictyostatin, discodermolide, eleutherobin and sarcodictyins, zampanolide, dactylolide, laulimalides, peloruside and ceratamines from natural sources, as well as small molecular microtubule stabilizers obtained via chemical synthesis. Then we discuss the application prospect and development of these anticancer compounds.
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Affiliation(s)
- Ya-Nan Cao
- Agronomy College, Sichuan Agriculture University, Chengdu 611130, PR China; School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Ling-Li Zheng
- Department of Pharmacy, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, PR China
| | - Dan Wang
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Xiao-Xia Liang
- Agronomy College, Sichuan Agriculture University, Chengdu 611130, PR China.
| | - Feng Gao
- Agronomy College, Sichuan Agriculture University, Chengdu 611130, PR China; School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China.
| | - Xian-Li Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
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9
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Polysubstituted 2-aminoimidazoles as anti-biofilm and antiproliferative agents: Discovery of potent lead. Eur J Med Chem 2017; 138:152-169. [DOI: 10.1016/j.ejmech.2017.06.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/26/2017] [Accepted: 06/23/2017] [Indexed: 12/18/2022]
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10
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Tian G, Fedoseev P, Van der Eycken EV. Hypervalent Iodine(III)-Mediated Cascade Cyclization of Propargylguanidines and Total Syntheses of Kealiinine B and C. Chemistry 2017; 23:5224-5227. [DOI: 10.1002/chem.201700934] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Guilong Tian
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
| | - Pavel Fedoseev
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
- Peoples Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya street Moscow 117198 Russia
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11
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Zhao Y, Hu Y, Li X, Wan B. Tf2NH-catalyzed formal [3 + 2] cycloaddition of oxadiazolones with ynamides: a simple access to aminoimidazoles. Org Biomol Chem 2017; 15:3413-3417. [DOI: 10.1039/c7ob00701a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We herein develop a formal [3 + 2] approach to access aminoimidazoles through the Tf2NH-catalyzed cycloaddition of oxadiazolones with ynamides, in which oxadiazolones are first employed as the three-atom building units.
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Affiliation(s)
- Yingying Zhao
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Yancheng Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xincheng Li
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Boshun Wan
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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12
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Abstract
![]()
Pd-catalyzed
cross-coupling reactions that form C–N bonds
have become useful methods to synthesize anilines and aniline derivatives,
an important class of compounds throughout chemical research. A key
factor in the widespread adoption of these methods has been the continued
development of reliable and versatile catalysts that function under
operationally simple, user-friendly conditions. This review provides
an overview of Pd-catalyzed N-arylation reactions found in both basic
and applied chemical research from 2008 to the present. Selected examples
of C–N cross-coupling reactions between nine classes of nitrogen-based
coupling partners and (pseudo)aryl halides are described for the synthesis
of heterocycles, medicinally relevant compounds, natural products,
organic materials, and catalysts.
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Affiliation(s)
- Paula Ruiz-Castillo
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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13
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Waly MA, Yossif SA, Ibrahim IT, Sofan MA. Efficient Synthesis ofN-Substituted 2,4-Azepandione Ring System as an Active Intermediate for Heterocyclic Syntheses. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Mohamed A. Waly
- Chemistry Department; Faculty of Science, Damietta University; New Damietta 34517 Egypt
| | - Shiam A. Yossif
- Chemistry Department; Faculty of Science, Damietta University; New Damietta 34517 Egypt
| | | | - Mamdouh A. Sofan
- Chemistry Department; Faculty of Science, Damietta University; New Damietta 34517 Egypt
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14
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Zavesky B, Babij NR, Wolfe JP. Synthesis of substituted 2-aminoimidazoles via Pd-catalyzed alkyne carboamination reactions. Application to the synthesis of preclathridine natural products. Org Lett 2014; 16:4952-5. [PMID: 25198672 PMCID: PMC4168774 DOI: 10.1021/ol502471x] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Indexed: 01/18/2023]
Abstract
A new method for the synthesis of 2-aminoimidazole products is described. The heterocyclic products are generated in good yields via Pd-catalyzed carboamination reactions of N-propargyl guanidines and aryl triflates. This methodology generates both a C-N and C-C bond during the annulation step and facilitates the rapid construction of 2-aminoimidazole products with different aryl groups. The utility of this methodology was demonstrated in the total synthesis of preclathridine A, preclathridine B, and dorimidazole B from a single intermediate.
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Affiliation(s)
- Blane
P. Zavesky
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1005, United States
| | - Nicholas R. Babij
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1005, United States
| | - John P. Wolfe
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1005, United States
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15
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Steenackers H, Ermolat'ev D, Trang TTT, Savalia B, Sharma UK, De Weerdt A, Shah A, Vanderleyden J, Van der Eycken EV. Microwave-assisted one-pot synthesis and anti-biofilm activity of 2-amino-1H-imidazole/triazole conjugates. Org Biomol Chem 2014; 12:3671-8. [DOI: 10.1039/c3ob42282h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A microwave-assisted protocol was developed for the construction of 2-amino-1H-imidazole/triazole conjugates with anti-biofilm activity.
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Affiliation(s)
- Hans Steenackers
- Centre of Microbial and Plant Genetics (CMPG)
- Department of Microbial and Molecular Systems
- KU Leuven
- B-3001 Leuven, Belgium
| | - Denis Ermolat'ev
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- B-3001 Leuven, Belgium
| | - Tran Thi Thu Trang
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- B-3001 Leuven, Belgium
| | - Bharat Savalia
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- B-3001 Leuven, Belgium
- Department of Chemistry
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- B-3001 Leuven, Belgium
| | - Ami De Weerdt
- Centre of Microbial and Plant Genetics (CMPG)
- Department of Microbial and Molecular Systems
- KU Leuven
- B-3001 Leuven, Belgium
| | - Anamik Shah
- Department of Chemistry
- Saurashtra University
- 361 005 Rajkot, India
| | - Jozef Vanderleyden
- Centre of Microbial and Plant Genetics (CMPG)
- Department of Microbial and Molecular Systems
- KU Leuven
- B-3001 Leuven, Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- B-3001 Leuven, Belgium
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16
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Feng Q, Tao L, Liu Z. Total Synthesis of Microtubule-Stabilizing Agent Ceratamine A. J Org Chem 2013; 78:12814-8. [DOI: 10.1021/jo402165n] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qiguo Feng
- State Key
Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Lulu Tao
- State Key
Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Zhanzhu Liu
- State Key
Laboratory of Bioactive
Substance and Function of Natural Medicines, Institute of Materia
Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
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17
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Ma F, Xie X, Zhang L, Peng Z, Ding L, Fu L, Zhang Z. Palladium-catalyzed amidation of aryl halides using 2-dialkylphosphino-2'-alkoxyl-1,1'-binaphthyl as ligands. J Org Chem 2012; 77:5279-85. [PMID: 22624625 DOI: 10.1021/jo3005827] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Palladium-catalyzed intermolecular C-N bond-forming reactions between aryl halides and amides are described using 2-dialkylphosphino-2'-alkoxyl-1,1'-binaphthyl, which is both bulky and electron-rich, as the ligand. A variety of amides, including aliphatic and aromatic primary amides, lactams, and carbamates, were viable substrates for the amidation, which exhibited good functional group compatibility. By tuning the substituents at the 2,2'-position of 1,1'-binaphthyl of the ligand, the palladium-catalyzed amidation of bulky aryl halides was realized and this coupling reaction was used to synthesize 2-amino-2'-methoxy-1,1'-binaphthyl in high yield.
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Affiliation(s)
- Fangfang Ma
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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18
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Ueda S, Ali S, Fors BP, Buchwald SL. Me3(OMe)tBuXPhos: a surrogate ligand for Me4tBuXPhos in palladium-catalyzed C-N and C-O bond-forming reactions. J Org Chem 2012; 77:2543-7. [PMID: 22313416 PMCID: PMC3387921 DOI: 10.1021/jo202537e] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new biarylphosphine ligand, Me(3)(OMe)tBuXPhos (L3), was designed as a surrogate for Me(4)tBuXPhos (L1). The Me(3)(OMe)tBuXPhos could be prepared in a chromatography-free manner from inexpensive and readily available 2,3,6-trimethylphenol. Comparative studies demonstrated that a catalyst based on Me(3)(OMe)tBuXPhos displayed the same reactivity as a catalyst based on Me(4)tBuXPhos for Pd-catalyzed C-N and C-O bond-forming processes.
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Affiliation(s)
- Satoshi Ueda
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Siraj Ali
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Brett P. Fors
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139
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20
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Lithiation-Based and Magnesation-Based Strategies for the Functionalization of Imidazole: 2001–2010. TOPICS IN HETEROCYCLIC CHEMISTRY 2012. [DOI: 10.1007/7081_2012_73] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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21
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Ermolat'ev DS, Bariwal JB, Steenackers HPL, De Keersmaecker SCJ, Van der Eycken EV. Concise and diversity-oriented route toward polysubstituted 2-aminoimidazole alkaloids and their analogues. Angew Chem Int Ed Engl 2011; 49:9465-8. [PMID: 20963737 DOI: 10.1002/anie.201004256] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Denis S Ermolat'ev
- Laboratory for Organic and Microwave-Assisted Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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22
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Kumar AS, Nagarajan R. Synthesis of α-Carbolines via Pd-Catalyzed Amidation and Vilsmeier−Haack Reaction of 3-Acetyl-2-chloroindoles. Org Lett 2011; 13:1398-401. [DOI: 10.1021/ol2000827] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arepalli Sateesh Kumar
- School of Chemistry, University of Hyderabad, Central University (P.O.), Hyderabad-500 046, India
| | - Rajagopal Nagarajan
- School of Chemistry, University of Hyderabad, Central University (P.O.), Hyderabad-500 046, India
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23
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Smith JA, Molesworth PP, Hyland CJ, Ryan JH. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1016/s0959-6380(11)22016-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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25
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Nodwell M, Zimmerman C, Roberge M, Andersen RJ. Synthetic analogues of the microtubule-stabilizing sponge alkaloid ceratamine A are more active than the natural product. J Med Chem 2010; 53:7843-51. [PMID: 20945907 DOI: 10.1021/jm101012q] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Desbromoceratamine A (3) exhibits significantly less potent activity than the natural product ceratamine A (1) in a cell-based assay for antimitotic activity. Synthesis of the ceratamine A analogue 4 has shown that replacing the bromine atoms in the natural product with methyl groups generates an analogue that is more active than natural ceratamine A (1). Further enhancement of the antimitotic activity of the ceratamine pharmacophore has been achieved in the synthetic analogue 33, which has both bromine atoms replaced with methyl groups and an additional methyl substituent on the amino nitrogen at C-2. An efficient synthetic route has been developed to 33 that should enable the first in vivo evaluation of the new ceratamine microtubule-stabilizing pharmacophore and has provided several additional analogues for structure-activity relationship evaluation.
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Affiliation(s)
- Matt Nodwell
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, Vancouver, BC, Canada V6T 1Z1
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26
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Ermolat'ev DS, Bariwal JB, Steenackers HPL, De Keersmaecker SCJ, Van der Eycken EV. Concise and Diversity-Oriented Route toward Polysubstituted 2-Aminoimidazole Alkaloids and Their Analogues. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004256] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Abstract
The utility of copper-mediated cross-coupling reactions has been significantly increased by the development of mild reaction conditions and the ability to employ catalytic amounts of copper. The use of diamine-based ligands has been important in these advances and in this review we discuss these systems, including the choice of reaction conditions and applications in the synthesis of pharmaceuticals, natural products and designed materials.
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Affiliation(s)
- David S Surry
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. ; Tel: +1-617-253-1885
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Laroche C, Kerwin SM. Efficient, Regioselective Access to Bicyclic Imidazo[1,2-x]- Heterocycles via Gold- and Base-Promoted Cyclization of 1-Alkynylimidazoles. J Org Chem 2009; 74:9229-32. [DOI: 10.1021/jo902073m] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Christophe Laroche
- Division of Medicinal Chemistry, College of Pharmacy and Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
| | - Sean M. Kerwin
- Division of Medicinal Chemistry, College of Pharmacy and Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
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Fors BP, Dooleweerdt K, Zeng Q, Buchwald SL. An Efficient System For the Pd-Catalyzed Cross-Coupling of Amides and Aryl Chlorides. Tetrahedron 2009; 65:6576-6583. [PMID: 20740063 PMCID: PMC2927134 DOI: 10.1016/j.tet.2009.04.096] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A catalyst based on a new biarylphosphine ligand (3) for the Pd-catalyzed cross-coupling reactions of amides and aryl chlorides is described. This system shows the highest turnover frequencies reported to date for these reactions, especially for aryl chloride substrates bearing an ortho substituent. An array of amides and aryl chlorides were successfully reacted in good to excellent yields.
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Affiliation(s)
- Brett P. Fors
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Karin Dooleweerdt
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Qingle Zeng
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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30
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Coleman RS, Campbell EL, Carper DJ. A direct and efficient total synthesis of the tubulin-binding agents ceratamine A and B; use of IBX for a remarkable heterocycle dehydrogenation. Org Lett 2009; 11:2133-6. [PMID: 19385610 DOI: 10.1021/ol900709n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The total synthesis of the tubulin-binding agents ceratamine A and B is reported, along with des-methyl analogs, via a synthetic route that is high-yielding and operationally efficient. The synthetic route involved a Beckmann rearrangement to form an azepine ring precursor, a Knoevenagel condensation to install the benzylic side chain, and an effective imidazole annulation onto an alpha-aminoketone precursor with a protected S-methylisothiourea. Final dehydrogenation proved remarkably facile using IBX.
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Affiliation(s)
- Robert S Coleman
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA.
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