1
|
Yılmaz Ü, Küçükbay H. Effects of new NHC derivatives as ligands in the Suzuki–Miyaura reaction. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1873382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ülkü Yılmaz
- Department of Engineering Basic Sciences, Faculty of Engineering and Natural Sciences, Malatya Turgut Özal University, Malatya, Turkey
| | - Hasan Küçükbay
- Department of Chemistry, Faculty of Science and Arts, İnönü University, Malatya, Turkey
| |
Collapse
|
2
|
Wollnitzke P, Essig S, Gölz JP, von Schwarzenberg K, Menche D. Total Synthesis of Ajudazol A by a Modular Oxazole Diversification Strategy. Org Lett 2020; 22:6344-6348. [DOI: 10.1021/acs.orglett.0c02188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philipp Wollnitzke
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| | - Sebastian Essig
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| | - Jan Philipp Gölz
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| | - Karin von Schwarzenberg
- Department of Pharmacy-Center for Drug Research, Ludwig-Maximilians-University of Munich, Butenandtstrasse 5-13, D-83177 Munich, Germany
| | - Dirk Menche
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| |
Collapse
|
3
|
Qiu D, Wang S, Meng H, Tang S, Zhang Y, Wang J. Synthesis of Benzyltributylstannanes by the Reaction of N-Tosylhydrazones with Bu3SnH. J Org Chem 2016; 82:624-632. [DOI: 10.1021/acs.joc.6b02639] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Di Qiu
- Beijing National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College
of Chemistry, Peking University, Beijing 100871, China
- College of Chemistry, Tianjin Key Laboratory
of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
| | - Shuai Wang
- Beijing National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College
of Chemistry, Peking University, Beijing 100871, China
| | - He Meng
- Beijing National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College
of Chemistry, Peking University, Beijing 100871, China
| | - Shengbo Tang
- Beijing National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College
of Chemistry, Peking University, Beijing 100871, China
| | - Yan Zhang
- Beijing National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College
of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College
of Chemistry, Peking University, Beijing 100871, China
| |
Collapse
|
4
|
Brodnik H, Požgan F, Štefane B. Synthesis of 8-heteroaryl nitroxoline analogues via one-pot sequential Pd-catalyzed coupling reactions. Org Biomol Chem 2016; 14:1969-81. [DOI: 10.1039/c5ob02364e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 8-heteroaryl substituted quinolines were prepared, either by direct C–H arylation of five-membered heteroarenes, or Pd-catalyzed coupling of organoboron reagents with bromoquinolines.
Collapse
Affiliation(s)
- Helena Brodnik
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Franc Požgan
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Bogdan Štefane
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| |
Collapse
|
5
|
Herkommer D, Thiede S, Wosniok PR, Dreisigacker S, Tian M, Debnar T, Irschik H, Menche D. Stereochemical Determination of the Leupyrrins and Total Synthesis of Leupyrrin A1. J Am Chem Soc 2015; 137:4086-9. [DOI: 10.1021/jacs.5b01894] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Herkommer
- Kekulé-Institut
für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Sebastian Thiede
- Kekulé-Institut
für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Paul R. Wosniok
- Kekulé-Institut
für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Sandra Dreisigacker
- Kekulé-Institut
für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Maoqun Tian
- Kekulé-Institut
für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Thomas Debnar
- Kekulé-Institut
für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Herbert Irschik
- Microbial
Drugs, Helmholtz Centre for Infection Research (HZI), Inhoffenstr. 7, D-38124 Braunschweig, Germany
| | - Dirk Menche
- Kekulé-Institut
für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| |
Collapse
|
6
|
Rizwan K, Zubair M, Rasool N, Ali S, Zahoor AF, Rana UA, Khan SUD, Shahid M, Zia-Ul-Haq M, Jaafar HZ. Regioselective synthesis of 2-(bromomethyl)-5-aryl-thiophene derivatives via palladium (0) catalyzed suzuki cross-coupling reactions: as antithrombotic and haemolytically active molecules. Chem Cent J 2014; 8:74. [PMID: 25685184 PMCID: PMC4326645 DOI: 10.1186/s13065-014-0074-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 11/27/2014] [Indexed: 11/30/2022] Open
Abstract
Background It is seen that the regioselective functionalizations of halogenated heterocycles play an important role in the synthesis of several types of organic compounds. In this domain, the Suzuki-Miyaura reaction has emerged as a convenient way to build carbon-carbon bonds in synthesizing organic compounds. Some of the most important applications of these reactions can be seen in the synthesis of natural products, and in designing targeted pharmaceutical compounds. Herein, we present the regioselective synthesis of the novel series of 2-(bromomethyl)-5-aryl-thiophenes 3a-i,via Suzuki cross-coupling reactions of various aryl boronic acids with 2-bromo-5-(bromomethyl)thiophene (2). Results The synthesized compounds were screened for their haemolytic and antithrombolytic activities. The novel compounds 3f, 3i showed highest 69.7, 33.6% haemolysis of blood cells, respectively. The antithrombolytic activity of the compounds was found to be within low to moderate against human blood clot. The compound 3i showed potent clot lysis (31.5%). Conclusions Considering these results, it is concluded that the synthesized compounds can be used as a promising source of therapeutic agents.
Collapse
Affiliation(s)
- Komal Rizwan
- Department of Chemistry, Government College University, Faisalabad, 38000 Pakistan
| | - Muhammad Zubair
- Department of Chemistry, Government College University, Faisalabad, 38000 Pakistan
| | - Nasir Rasool
- Department of Chemistry, Government College University, Faisalabad, 38000 Pakistan
| | - Shaukat Ali
- Department of Chemistry, Government College University, Faisalabad, 38000 Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University, Faisalabad, 38000 Pakistan
| | - Usman Ali Rana
- Sustainable Energy Technologies (SET) Center, College of Engineering, King Saud University, PO-Box - 800, Riyadh, 11421 Saudi Arabia
| | - Salah Ud-Din Khan
- Sustainable Energy Technologies (SET) Center, College of Engineering, King Saud University, PO-Box - 800, Riyadh, 11421 Saudi Arabia
| | - Muhammad Shahid
- Department of Chemistry and Biochemistry, University of Agriculture, Faisalabad, 38040 Pakistan
| | | | - Hawa Ze Jaafar
- Department of Crop Science, Faculty of Agriculture, 43400 UPM Serdang, Selangor Malaysia
| |
Collapse
|
7
|
Yoon S, Hong MC, Rhee H. Palladium-catalyzed benzylation of arylboronic acids with N,N-ditosylbenzylamines. J Org Chem 2014; 79:4206-11. [PMID: 24724961 DOI: 10.1021/jo500462n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The palladium-catalyzed coupling of N,N-ditosylbenzylamines with arylboronic acids has been investigated, and the resulting diarylmethanes were obtained in high yields. Conversion of the amine to a N,N-ditosylimide group provided an efficient leaving group for the Pd-catalyzed benzylation of arylboronic acids.
Collapse
Affiliation(s)
- Sangeun Yoon
- Department of Bionanotechnology, Hanyang University , Sa 3-Dong 1271, Ansan, Kyunggi-Do 426-791, Korea
| | | | | |
Collapse
|
8
|
Rao MLN, Dhanorkar RJ. Threefold and chemoselective couplings of triarylbismuths with benzylic chlorides and iodides using palladium catalysis. RSC Adv 2014. [DOI: 10.1039/c3ra46672h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
9
|
Newell JL, Keyari CM, McDaniel SW, Diaz PJ, Natale NR, Patel SA, Bridges RJ. Novel di-aryl-substituted isoxazoles act as noncompetitive inhibitors of the system Xc(-) cystine/glutamate exchanger. Neurochem Int 2013; 73:132-8. [PMID: 24333322 DOI: 10.1016/j.neuint.2013.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 11/26/2013] [Accepted: 11/29/2013] [Indexed: 01/18/2023]
Abstract
The system xc(-) antiporter is a plasma membrane transporter that mediates the exchange of extracellular l-cystine with intracellular l-glutamate. This exchange is significant within the context of the CNS because the import of l-cystine is required for the synthesis of the antioxidant glutathione, while the efflux of l-glutamate has the potential to contribute to either excitatory signaling or excitotoxic pathology. Changes in the activity of the transport system have been linked to the underlying pathological mechanisms of a variety of CNS disorders, one of the most prominent of which is its highly enriched expression in glial brain tumors. In an effort to produce more potent system xc(-) blockers, we have been using amino-3-carboxy-5-methylisoxazole propionic acid (ACPA) as a scaffold for inhibitor development. We previously demonstrated that the addition of lipophilic aryl groups to either the #4 or #5 position on the isoxazole ring markedly increased the inhibitory activity at system xc(-). In the present work a novel series of analogues has been prepared in which aryl groups have been introduced at both the #4 and #5 positions. In contrast to the competitive action of the mono-substituted analogues, kinetic analyses indicate that the di-substituted isoxazoles block system xc(-)-mediated uptake of (3)H-l-glutamate into SNB-19 cells by a noncompetitive mechanism. These new analogues appear to be the first noncompetitive inhibitors identified for this transport system, as well as being among the most potent blockers identified to date. These diaryl-isoxazoles should be of value in assessing the physiological roles and molecular pharmacology of system xc(-).
Collapse
Affiliation(s)
- J L Newell
- Center for Structural & Functional Neuroscience, Department of Biomedical & Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Montana, Missoula, MT 59812, United States
| | - C M Keyari
- Center for Structural & Functional Neuroscience, Department of Biomedical & Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Montana, Missoula, MT 59812, United States
| | - S W McDaniel
- Center for Structural & Functional Neuroscience, Department of Biomedical & Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Montana, Missoula, MT 59812, United States
| | - P J Diaz
- Center for Structural & Functional Neuroscience, Department of Biomedical & Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Montana, Missoula, MT 59812, United States
| | - N R Natale
- Center for Structural & Functional Neuroscience, Department of Biomedical & Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Montana, Missoula, MT 59812, United States
| | - S A Patel
- Center for Structural & Functional Neuroscience, Department of Biomedical & Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Montana, Missoula, MT 59812, United States
| | - R J Bridges
- Center for Structural & Functional Neuroscience, Department of Biomedical & Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Montana, Missoula, MT 59812, United States.
| |
Collapse
|
10
|
Matti AA, Mirzaei J, Rudolph J, Smith SA, Newell JL, Patel SA, Braden MR, Bridges RJ, Natale NR. Microwave accelerated synthesis of isoxazole hydrazide inhibitors of the system xc- transporter: Initial homology model. Bioorg Med Chem Lett 2013; 23:5931-5. [PMID: 24042010 DOI: 10.1016/j.bmcl.2013.08.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Revised: 08/16/2013] [Accepted: 08/19/2013] [Indexed: 01/18/2023]
Abstract
Microwave accelerated reaction system (MARS) technology provided a good method to obtain selective and open isoxazole ligands that bind to and inhibit the Sxc- antiporter. The MARS provided numerous advantages, including: shorter time, better yield and higher purity of the product. Of the newly synthesized series of isoxazoles the salicyl hydrazide 6 exhibited the highest level of inhibitory activity in the transport assay. A homology model has been developed to summarize the SAR results to date, and provide a working hypothesis for future studies.
Collapse
Affiliation(s)
- Afnan A Matti
- Department of Biomedical & Pharmaceutical Sciences, Center for Structural & Functional Neuroscience, The University of Montana, Missoula, MT 59812, United States; Medicinal Chemistry Graduate Program, The University of Montana, Missoula, MT 59812, United States
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Iranpoor N, Firouzabadi H, Safavi A, Motevalli S, Doroodmand MM. Palladium nanoparticles supported on SiO2
by chemical vapor deposition (CVD) technique as efficient catalyst for Suzuki-Miyaura coupling of aryl bromides and iodides: selective coupling of halophenols. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2868] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nasser Iranpoor
- Chemistry Department; College of Sciences; Shiraz University; Shiraz Iran
| | - Habib Firouzabadi
- Chemistry Department; College of Sciences; Shiraz University; Shiraz Iran
| | - Afsaneh Safavi
- Chemistry Department; College of Sciences; Shiraz University; Shiraz Iran
- Nano Technology Research Institute; University of Shiraz; Shiraz Iran
| | - Somayeh Motevalli
- Chemistry Department; College of Sciences; Shiraz University; Shiraz Iran
| | - Mohammad M. Doroodmand
- Chemistry Department; College of Sciences; Shiraz University; Shiraz Iran
- Nano Technology Research Institute; University of Shiraz; Shiraz Iran
| |
Collapse
|