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Chai J, Arico-Muendel CC, Ding Y, Pollastri MP, Scott S, Mantell MA, Yao G. Synthesis of a DNA-Encoded Macrocyclic Library Utilizing Intramolecular Benzimidazole Formation. Bioconjug Chem 2023. [PMID: 37216465 DOI: 10.1021/acs.bioconjchem.3c00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Macrocycles occupy chemical space "beyond the rule of five". They bridge traditional bioactive small molecule drugs and macromolecules and have the potential to modulate challenging targets such as PPI or proteases. Here we report an on-DNA macrocyclization reaction utilizing intramolecular benzimidazole formation. A 129-million-member macrocyclic library composed of a privileged benzimidazole core, a dipeptide sequence (natural or non-natural), and linkers of varying length and flexibility was designed and synthesized.
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Affiliation(s)
- Jing Chai
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
| | - Christopher C Arico-Muendel
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
| | - Yun Ding
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
| | - Michael P Pollastri
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
| | - Sarah Scott
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
| | - Mark A Mantell
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
| | - Gang Yao
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
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Abstract
Developing new on-DNA reactions is paramount to the development of new encoded libraries in the pursuit of novel pharmaceutical lead compounds. Lactam-containing molecules have been shown to be effective in a wide range of therapeutic areas and therefore represent a promising target for further investigation by DNA-encoded library screening. In pursuit of this motif, we report a novel method for the introduction of lactam-containing structures onto a DNA headpiece through the Ugi four-center three-component reaction (4C-3CR). This novel method is successful in three different approaches to give unique on-DNA lactam structures: on-DNA aldehyde coupled with isonitriles and amino acids; on-DNA isonitrile coupled with aldehydes and amino acids; and on-DNA isonitrile coupled with amines and acid aldehydes.
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Affiliation(s)
- Mark A Mantell
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
| | - Lisa Marcaurelle
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
| | - Yun Ding
- Encoded Library Technologies/NCE Molecular Discovery, GSK, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, United States
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Mantell MA, Lasky MR, Lee M, Remy M, Sanford MS. S NAr and C-H Amination of Electron Rich Arenes with Pyridine as a Nucleophile Using Photoredox Catalysis. Org Lett 2021; 23:5213-5217. [PMID: 34161730 DOI: 10.1021/acs.orglett.1c01749] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This report describes the development of two photocatalytic methods for the pyridination of electron rich arenes. First, an SNAr-type reaction between aryl halides and pyridine is developed and optimized. This transformation affords selective substitution of C(sp2)-halogen over C(sp2)-OR bonds to afford arylpyridinium products under anaerobic conditions. Under complementary aerobic conditions, analogous substrates are shown to undergo oxidative C(sp2)-H pyridination.
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Affiliation(s)
- Mark A Mantell
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Matthew R Lasky
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Melissa Lee
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Matthew Remy
- Corporate R&D, Dow, 1710 Building, Midland, Michigan 48667, United States
| | - Melanie S Sanford
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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Affiliation(s)
- Mark A. Mantell
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Jeff W. Kampf
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Melanie Sanford
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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Bandara HMD, Jin D, Mantell MA, Field KD, Wang A, Narayanan RP, Deskins NA, Emmert MH. Non-directed aromatic C-H amination: catalytic and mechanistic studies enabled by Pd catalyst and reagent design. Catal Sci Technol 2016; 6:5304-5310. [PMID: 28066540 DOI: 10.1039/c6cy00457a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This manuscript describes the systematic development of pyridine-type ligands, which promote the Pd catalyzed, non-directed amination of benzene in combination with novel, hydroxylamine-based electrophilic amination reagents. DFT calculations and mechanistic experiments provide insights into the factors influencing the arene C-H amination protocol.
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Affiliation(s)
- H M D Bandara
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - D Jin
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - M A Mantell
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - K D Field
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - A Wang
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - R P Narayanan
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - N A Deskins
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
| | - M H Emmert
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, USA
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Gunay A, Mantell MA, Field KD, Wu W, Chin M, Emmert MH. Oxidation catalysis in air with Cp*Ir: influence of added ligands and reaction conditions on catalytic activity and stability. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01203h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The systematic evaluation of Ir catalysts generates the highest reported TONs and a safe protocol for air oxidation.
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Affiliation(s)
- Ahmet Gunay
- Department of Chemistry and Biochemistry
- Worcester Polytechnic Institute
- Worcester
- USA
| | - Mark A. Mantell
- Department of Chemistry and Biochemistry
- Worcester Polytechnic Institute
- Worcester
- USA
| | - Kathleen D. Field
- Department of Chemistry and Biochemistry
- Worcester Polytechnic Institute
- Worcester
- USA
| | - Wenbo Wu
- Department of Chemistry and Biochemistry
- Worcester Polytechnic Institute
- Worcester
- USA
| | - Michael Chin
- Department of Chemistry and Biochemistry
- Worcester Polytechnic Institute
- Worcester
- USA
| | - Marion H. Emmert
- Department of Chemistry and Biochemistry
- Worcester Polytechnic Institute
- Worcester
- USA
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