1
|
Gardner ED, Johnson BP, Dimas DA, McClurg HE, Severance ZC, Burgett AW, Singh S. Unlocking New Prenylation Modes: Azaindoles as a New Substrate Class for Indole Prenyltransferases. ChemCatChem 2023; 15:e202300650. [PMID: 37954549 PMCID: PMC10634513 DOI: 10.1002/cctc.202300650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Indexed: 11/14/2023]
Abstract
Aza-substitution, the replacement of aromatic CH groups with nitrogen atoms, is an established medicinal chemistry strategy for increasing solubility, but current methods of accessing functionalized azaindoles are limited. In this work, indole-alkylating aromatic prenyltransferases (PTs) were explored as a strategy to directly functionalize azaindole-substituted analogs of natural products. For this, a series of aza-l-tryptophans (Aza-Trp) featuring N-substitution of every aromatic CH position of the indole ring and their corresponding cyclic Aza-l-Trp-l-proline dipeptides (Aza-CyWP), were synthesized as substrate mimetics for the indole-alkylating PTs FgaPT2, CdpNPT, and FtmPT1. We then demonstrated most of these substrate analogs were accepted by a PT, and the regioselectivity of each prenylation was heavily influenced by the position of the N-substitution. Remarkably, FgaPT2 was found to produce cationic N-prenylpyridinium products, representing not only a new substrate class for indole PTs but also a previously unobserved prenylation mode. The discovery that nitrogenous indole bioisosteres can be accepted by PTs thus provides access to previously unavailable chemical space in the search for bioactive indolediketopiperazine analogs.
Collapse
Affiliation(s)
- Eric D. Gardner
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, Oklahoma 73019, United States
| | - Bryce P. Johnson
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, Oklahoma 73019, United States
| | - Dustin A. Dimas
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, Oklahoma 73019, United States
| | - Heather E. McClurg
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, Oklahoma 73019, United States
| | - Zachary C. Severance
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73117, United States
| | - Anthony W. Burgett
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73117, United States
| | - Shanteri Singh
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, Oklahoma 73019, United States
| |
Collapse
|
2
|
Baykova SO, Geyl KK, Baykov SV, Boyarskiy VP. Synthesis of 3-(Pyridin-2-yl)quinazolin-2,4(1 H,3 H)-diones via Annulation of Anthranilic Esters with N-pyridyl Ureas. Int J Mol Sci 2023; 24:ijms24087633. [PMID: 37108796 PMCID: PMC10142796 DOI: 10.3390/ijms24087633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
A new route for the synthesis of quinazolin-2,4(1H,3H)-diones and thieno [2,3-d]pyrimidine-2,4(1H,3H)-diones substituted by pyridyl/quinolinyl moiety in position 3 has been developed. The proposed method concluded in an annulation of substituted anthranilic esters or 2-aminothiophene-3-carboxylates with 1,1-dimethyl-3-(pyridin-2-yl) ureas. The process consists of the formation of N-aryl-N'-pyridyl ureas followed by their cyclocondensation into the corresponding fused heterocycles. The reaction does not require the use of metal catalysts and proceeds with moderate to good yields (up to 89%). The scope of the method is more than 30 examples, including compounds with both electron-withdrawing and electron-donating groups, as well as diverse functionalities. At the same time, strong electron-acceptor substituents in the pyridine ring of the starting ureas reduce the product yield or even prevent the cyclocondensation step. The reaction can be easily scaled to gram quantities.
Collapse
Affiliation(s)
- Svetlana O Baykova
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russia
| | - Kirill K Geyl
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russia
| | - Sergey V Baykov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russia
| | - Vadim P Boyarskiy
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., Saint Petersburg 199034, Russia
| |
Collapse
|
3
|
Gong H, Wang J, Peng Y, Chen H, Deng H, Hao J, Wan W. Photocatalyzed difluoroalkylation of pyridine N-oxides. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2112057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Haiying Gong
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Juan Wang
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Yi Peng
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Hua Chen
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Hongmei Deng
- Laboratory of Microstructures, Shanghai University, Shanghai, China
| | - Jian Hao
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Wen Wan
- Department of Chemistry, Shanghai University, Shanghai, China
| |
Collapse
|
4
|
Kasatkina SO, Geyl KK, Baykov SV, Novikov MS, Boyarskiy VP. “Urea to Urea” Approach: Access to Unsymmetrical Ureas Bearing Pyridyl Substituents. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Svetlana O. Kasatkina
- Institute of Chemistry Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg 199034 Russian Federatio
| | - Kirill K. Geyl
- Institute of Chemistry Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg 199034 Russian Federatio
| | - Sergey V. Baykov
- Institute of Chemistry Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg 199034 Russian Federatio
| | - Mikhail S. Novikov
- Institute of Chemistry Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg 199034 Russian Federatio
| | - Vadim P. Boyarskiy
- Institute of Chemistry Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg 199034 Russian Federatio
| |
Collapse
|
5
|
Synthesis, Structure, and Antiproliferative Action of 2-Pyridyl Urea-Based Cu(II) Complexes. Biomedicines 2022; 10:biomedicines10020461. [PMID: 35203671 PMCID: PMC8962293 DOI: 10.3390/biomedicines10020461] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 01/29/2022] [Accepted: 02/14/2022] [Indexed: 02/06/2023] Open
Abstract
Relying on a recently suggested protocol that furnishes convenient access to variously substituted 2-pyridyl ureas, twelve hitherto unknown Cu(II) complexes have been synthesized in the present work and their structures were evaluated by elemental analysis, HRMS, IR spectroscopy, and X-ray diffraction study. Two structural motifs ([Cu(L)2Cl]+[Cl]− or (Cu(L)2Cl2) depending on the substitution pattern on the 2-pyridine fragment were revealed. In addition, antiproliferative action of the obtained compounds have been investigated against lung cancer cell lines (A549, NCI-H460, NCI-H1975), and healthy WI-26 VA4 cells were used to monitor non-specific cytotoxicity. Two nitro-group substituted complexes Cu(U3)2Cl2 (IC50 = 39.6 ± 4.5 μM) and Cu(U11)2Cl2 (IC50 = 33.4 ± 3.8 μM) demonstrate enhanced activity against the drug resistant NCI-H1975 cells with moderate selectivity toward normal WI-26 VA4 cells. The antiproliferative mechanism of cell death underlying the growth inhibitory effect of the synthesized complexes was studied via additional experiments, including the cell cycle analysis and the apoptosis induction test. Reassuringly, certain 2-pyridyl urea-based Cu(II) complexes exerted cell line-specific antiproliferative effect which renders them valuable starting points for further unveiling the anticancer potential of this class of coordination compounds.
Collapse
|
6
|
Puleo TR, Klaus DR, Bandar JS. Nucleophilic C-H Etherification of Heteroarenes Enabled by Base-Catalyzed Halogen Transfer. J Am Chem Soc 2021; 143:12480-12486. [PMID: 34347457 DOI: 10.1021/jacs.1c06481] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We report a general protocol for the direct C-H etherification of N-heteroarenes. Potassium tert-butoxide catalyzes halogen transfer from 2-halothiophenes to N-heteroarenes to form N-heteroaryl halide intermediates that undergo tandem base-promoted alcohol substitution. Thus, the simple inclusion of inexpensive 2-halothiophenes enables regioselective oxidative coupling of alcohols with 1,3-azoles, pyridines, diazines, and polyazines under basic reaction conditions.
Collapse
Affiliation(s)
- Thomas R Puleo
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Danielle R Klaus
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jeffrey S Bandar
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| |
Collapse
|
7
|
Sarmah BK, Konwar M, Das A. Site-Selective Deoxygenative Amination of Azine N-Oxides with Carbodiimides under Catalyst-, Activator-, Base-, and Solvent-Free Conditions. J Org Chem 2021; 86:10762-10772. [PMID: 34260234 DOI: 10.1021/acs.joc.1c00741] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An operationally simple method for synthesizing 2-amino azines via [3+2] dipolar cycloaddition of azine N-oxide with carbodiimide has been demonstrated. The reaction can proceed smoothly under simple heating conditions without any transition metal catalyst, activator, base, and solvent. This transformation demonstrates a broad substrate scope and produces CO2 as the only co-product. The applicability of this method is highlighted by the late-stage modification of bioactive molecules, including quinine, (±)-α-tocopherol, and tryptamine modified quinoline.
Collapse
Affiliation(s)
- Bikash Kumar Sarmah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Monuranjan Konwar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Animesh Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| |
Collapse
|
8
|
Malykhin RS, Sukhorukov AY. Nucleophilic Halogenation of Heterocyclic
N
‐Oxides: Recent Progress and a Practical Guide. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100284] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Roman S. Malykhin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prospect, 47 Moscow 119991 Russia
- M. V. Lomonosov Moscow State University Department of Chemistry Leninskie gory, 1, str. 3 Moscow 119991 Russian Federation
| | - Alexey Yu. Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prospect, 47 Moscow 119991 Russia
- Plekhanov Russian University of Economics Stremyanny per. 36 Moscow 117997 Russia
| |
Collapse
|
9
|
Kaur R, Mandal S, Banerjee D, Kumar Yadav A. Transition Metal Free
α
−C−H Functionalization of Six Membered Heteroaromatic‐
N
‐Oxides. ChemistrySelect 2021. [DOI: 10.1002/slct.202100319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Ramandeep Kaur
- University Institute of Pharmaceutical Sciences Panjab University Chandigarh 160014 India
| | - Sudip Mandal
- Sudip Mandal Centre of Biomedical Research (CBMR) Lucknow India
| | - Debolina Banerjee
- University Institute of Pharmaceutical Sciences Panjab University Chandigarh 160014 India
| | - Ashok Kumar Yadav
- University Institute of Pharmaceutical Sciences Panjab University Chandigarh 160014 India
| |
Collapse
|
10
|
Kutasevich AV, Perevalov VP, Mityanov VS. Recent Progress in Non‐Catalytic C–H Functionalization of Heterocyclic
N
‐Oxides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001115] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Anton V. Kutasevich
- Department of Fine Organic Synthesis and Chemistry of Dyes Mendeleev University of Chemical Technology Miusskaya Sq., 9 125047 Moscow Russian Federation
| | - Valery P. Perevalov
- Department of Fine Organic Synthesis and Chemistry of Dyes Mendeleev University of Chemical Technology Miusskaya Sq., 9 125047 Moscow Russian Federation
| | - Vitaly S. Mityanov
- Department of Fine Organic Synthesis and Chemistry of Dyes Mendeleev University of Chemical Technology Miusskaya Sq., 9 125047 Moscow Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky Pr., 47 119991 Moscow Russian Federation
| |
Collapse
|