1
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Osawa T, Obika S. Synthesis of Coumarin-Conjugated Oligonucleotides via Knoevenagel Condensation to Prepare an Oligonucleotide Library. Chem Pharm Bull (Tokyo) 2024; 72:143-148. [PMID: 38296555 DOI: 10.1248/cpb.c23-00295] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
DNA-encoded libraries (DELs) are attracting attention as a screening tool in the early stages of drug discovery. In the development of DELs, drug candidate compounds are chemically synthesized on barcode DNA. Therefore, it is important to perform the synthesis under mild conditions so as to not damage the DNA. On the other hand, coumarins are gaining increasing research focus not only because they possess excellent fluorescence properties, but also because many medicines contain a coumarin skeleton. Among the various reactions developed for the synthesis of coumarins thus far, Knoevenagel condensation followed by intramolecular cyclization under mild conditions can yield coumarins. In this study, we developed a new synthetic method for preparing a coumarin-conjugated oligonucleotide library via Knoevenagel condensation. The results showed that coumarins substituted at the 5-, 6-, 7-, or 8-positions could be constructed on DNA to afford a total of 26 coumarin-conjugated DNAs. Moreover, this method was compatible with enzymatic ligation, demonstrating its utility in DEL synthesis. The developed strategy for the construction of coumarin scaffolds based on Knoevenagel condensation may contribute to the use of DELs in drug discovery and medicinal chemistry.
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Affiliation(s)
- Takashi Osawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Satoshi Obika
- Graduate School of Pharmaceutical Sciences, Osaka University
- Institute for Open and Transdisciplinary Research Initiatives, Osaka University
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2
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Wang H, Zhao G, Zhang T, Li Y, Zhang G, Li Y. Comparative Study of DNA Barcode Integrity Evaluation Approaches in the Early-Stage Development of DNA-Compatible Chemical Transformation. ACS Pharmacol Transl Sci 2023; 6:1724-1733. [PMID: 37974618 PMCID: PMC10644510 DOI: 10.1021/acsptsci.3c00181] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Indexed: 11/19/2023]
Abstract
DNA-encoded libraries (DEL) have emerged as an important drug discovery technical platform for target-based compound library selection. The success rate of DEL depends on both the chemical diversity of combinatorial libraries and the accuracy of DNA barcoding. Therefore, it is critical that the chemistry applied to library construction should efficiently transform on a wide range of substrates while preserving the integrity of DNA tags. Although several analytical methods have been developed to measure DNA damage caused by DEL chemical reactions, efficient and cost-effective evaluation criteria for DNA damage detection are still demanding. Herein, we set standards for evaluating the DNA compatibility of chemistry development at the laboratory level. Based on four typical DNA damage models of three different DEL formats, we evaluated the detection capabilities of four analytical methods, including ultraperformance liquid chromatography (UPLC-MS), electrophoresis, quantitative polymerase chain reaction (qPCR), and Sanger sequencing. This work systematically revealed the scope and capability of different analytical methods in assessing DNA damages caused by chemical transformation. Based on the results, we recommended UPLC-MS and qPCR as efficient methods for DNA barcode integrity analysis in the early-stage development of DNA-compatible chemistry. Meanwhile, we identified that Sanger sequencing was unreliable to assess DNA damage in this application.
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Affiliation(s)
- Huicong Wang
- Chongqing
Key Laboratory of Natural Product Synthesis and Drug Research, School
of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Guixian Zhao
- Chongqing
Key Laboratory of Natural Product Synthesis and Drug Research, School
of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Tianyang Zhang
- Chongqing
Key Laboratory of Natural Product Synthesis and Drug Research, School
of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Yangfeng Li
- Chongqing
Key Laboratory of Natural Product Synthesis and Drug Research, School
of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
- Chemical
Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Gong Zhang
- Chongqing
Key Laboratory of Natural Product Synthesis and Drug Research, School
of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
- Chemical
Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Yizhou Li
- Chongqing
Key Laboratory of Natural Product Synthesis and Drug Research, School
of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
- Chemical
Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
- Beijing
National Laboratory for Molecular Sciences, Beijing 100190, P. R. China
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3
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Sunkari YK, Nguyen TL, Siripuram VK, Flajolet M. Impact of organic chemistry conditions on DNA durability in the context of DNA-encoded library technology. iScience 2023; 26:107573. [PMID: 37664608 PMCID: PMC10470182 DOI: 10.1016/j.isci.2023.107573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/15/2023] [Accepted: 08/05/2023] [Indexed: 09/05/2023] Open
Abstract
High-power screening (HPS) technologies, such as DNA-encoded library (DEL) technology, could exponentially increase the dimensions of the chemical space accessible for drug discovery. The intrinsic fragile nature of DNA is associated with cumbersome limitations and DNA durability (e.g., depurination, loss of phosphate groups, adduct formation) is compromised in numerous organic chemistry conditions that require empirical testing. An atlas of reaction conditions (temperature, pH, solvent/buffer, ligands, oxidizing reagents, catalysts, scavengers in function of time) that have been systematically tested in multiple combinations, indicates precisely limits useful for DEL construction. More importantly, this approach could be used broadly to effectively evaluate DNA-compatibility of any novel on-DNA chemical reaction, and it is compatible with different molecular methodologies. This atlas and the general approach presented, by allowing novel reaction conditions to be performed in presence of DNA, should greatly help in expanding the DEL chemical space as well as any field involving DNA durability.
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Affiliation(s)
- Yashoda Krishna Sunkari
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Thu-Lan Nguyen
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Vijay Kumar Siripuram
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Marc Flajolet
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
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4
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Dinter R, Willems S, Nissalk T, Hastürk O, Brunschweiger A, Kockmann N. Development of a microfluidic photochemical flow reactor concept by rapid prototyping. Front Chem 2023; 11:1244043. [PMID: 37608867 PMCID: PMC10441772 DOI: 10.3389/fchem.2023.1244043] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 07/25/2023] [Indexed: 08/24/2023] Open
Abstract
The transfer from batch to flow chemistry is often based on commercial microfluidic equipment, such as costly complete reactor systems, which cannot be easily tailored to specific requirements of technologies such as DNA-encoded library technology (DELT), in particular for increasingly important photochemical reactions. Customized photoreactor concepts using rapid prototyping technology offer a modular, flexible, and affordable design that allows for adaptation to various applications. In order to validate the prototype reactors, a photochemical pinacol coupling reaction at 368 nm was conducted to demonstrate the transfer from batch to flow chemistry. The conversion rates were optimized by adapting the design parameters of the microfluidic flow photoreactor module. Subsequently, the photoreactor module has been extended to an application with DNA-tagged substrates by switching to LEDs with a wavelength of 454 nm. The successful recovery of DNA confirmed the feasibility of the modular-designed flow photo reactor. This collaborative approach holds enormous potential to drive the development of DELT and flow equipment design.
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Affiliation(s)
- Robin Dinter
- Laboratory of Equipment Design, Department of Biochemical and Chemical Engineering, TU Dortmund University, Dortmund, Germany
| | - Suzanne Willems
- Medicinal Chemistry, Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
| | - Thilo Nissalk
- Laboratory of Equipment Design, Department of Biochemical and Chemical Engineering, TU Dortmund University, Dortmund, Germany
| | - Oguz Hastürk
- Medicinal Chemistry, Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
| | - Andreas Brunschweiger
- Medicinal Chemistry, Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
- Department of Chemistry and Pharmacy, Institute for Pharmacy and Food Chemistry, Julius-Maximilians-University of Würzburg, Würzburg, Germany
| | - Norbert Kockmann
- Laboratory of Equipment Design, Department of Biochemical and Chemical Engineering, TU Dortmund University, Dortmund, Germany
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5
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Ding Z, Wu Y, Liu L, Qi B, Peng Z. Construction of Isocytosine Scaffolds via DNA-Compatible Biginelli-like Reaction. Org Lett 2023; 25:5515-5519. [PMID: 37462924 DOI: 10.1021/acs.orglett.3c01986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Herein we report a DNA-compatible Biginelli reaction to construct isocytosine scaffolds. This reaction utilizes a one-pot reaction of DNA-conjugated guanidines with aldehydes and methyl cyanoacetates to give isocytosine derivatives, and the method is well compatible with different types of substrates. This is the first report on the synthesis of an isocytosine backbone in the field of DNA-compatible organic synthesis. The successful development of this reaction can widen the chemical space of DELs.
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Affiliation(s)
- Zhaobing Ding
- PharmaBlock Sciences (Nanjing), Inc., Nanjing 210032, Jiangsu Province, China
| | - Yizhou Wu
- PharmaBlock Sciences (Nanjing), Inc., Nanjing 210032, Jiangsu Province, China
| | - Liu Liu
- PharmaBlock Sciences (Nanjing), Inc., Nanjing 210032, Jiangsu Province, China
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6
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Wen X, Wu X, Jin R, Lu X. Privileged heterocycles for DNA-encoded library design and hit-to-lead optimization. Eur J Med Chem 2023; 248:115079. [PMID: 36669370 DOI: 10.1016/j.ejmech.2022.115079] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 01/15/2023]
Abstract
It is well known that heterocyclic compounds play a key role in improving drug activity, target selectivity, physicochemical properties as well as reducing toxicity. In this review, we summarized the representative heterocyclic structures involved in hit compounds which were obtained from DNA-encoded library from 2013 to 2021. In some examples, the state of the art in heterocycle-based DEL synthesis and hit-to-lead optimization are highlighted. We hope that more and more novel heterocycle-based DEL toolboxes and in-depth pharmaceutical research on these lead compounds can be developed to accelerate the discovery of new drugs.
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Affiliation(s)
- Xin Wen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China.
| | - Xinyuan Wu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
| | - Rui Jin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China.
| | - Xiaojie Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
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7
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Chines S, Ehrt C, Potowski M, Biesenkamp F, Grützbach L, Brunner S, van den Broek F, Bali S, Ickstadt K, Brunschweiger A. Navigating chemical reaction space - application to DNA-encoded chemistry. Chem Sci 2022; 13:11221-11231. [PMID: 36320474 PMCID: PMC9517168 DOI: 10.1039/d2sc02474h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 08/31/2022] [Indexed: 12/02/2022] Open
Abstract
Databases contain millions of reactions for compound synthesis, rendering selection of reactions for forward synthetic design of small molecule screening libraries, such as DNA-encoded libraries (DELs), a big data challenge. To support reaction space navigation, we developed the computational workflow Reaction Navigator. Reaction files from a large chemistry database were processed using the open-source KNIME Analytics Platform. Initial processing steps included a customizable filtering cascade that removed reactions with a high probability to be incompatible with DEL, as they would e.g. damage the genetic barcode, to arrive at a comprehensive list of transformations for DEL design with applicability potential. These reactions were displayed and clustered by user-defined molecular reaction descriptors which are independent of reaction core substitution patterns. Thanks to clustering, these can be searched manually to identify reactions for DEL synthesis according to desired reaction criteria, such as ring formation or sp3 content. The workflow was initially applied for mapping chemical reaction space for aromatic aldehydes as an exemplary functional group often used in DEL synthesis. Exemplary reactions have been successfully translated to DNA-tagged substrates and can be applied to library synthesis. The versatility of the Reaction Navigator was then shown by mapping reaction space for different reaction conditions, for amines as a second set of starting materials, and for data from a second database.
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Affiliation(s)
- Silvia Chines
- TU Dortmund University, Department of Chemistry and Chemical Biology Otto-Hahn-Str. 6 44227 Dortmund Germany
| | | | - Marco Potowski
- TU Dortmund University, Department of Chemistry and Chemical Biology Otto-Hahn-Str. 6 44227 Dortmund Germany
| | - Felix Biesenkamp
- TU Dortmund University, Department of Chemistry and Chemical Biology Otto-Hahn-Str. 6 44227 Dortmund Germany
| | - Lars Grützbach
- TU Dortmund University, Department of Chemistry and Chemical Biology Otto-Hahn-Str. 6 44227 Dortmund Germany
| | - Susanne Brunner
- TU Dortmund University, Department of Statistics Vogelpothsweg 87 44227 Dortmund Germany
| | | | - Shilpa Bali
- Elsevier B.V. Radarweg 29 1043 NX Amsterdam The Netherlands
| | - Katja Ickstadt
- TU Dortmund University, Department of Statistics Vogelpothsweg 87 44227 Dortmund Germany
| | - Andreas Brunschweiger
- TU Dortmund University, Department of Chemistry and Chemical Biology Otto-Hahn-Str. 6 44227 Dortmund Germany
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8
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Luo A, Zhang Z, Zeng F, Wang X, Zhao X, Yang K, Hu YJ. Kinugasa Reaction for DNA-Encoded β-Lactam Library Synthesis. Org Lett 2022; 24:5756-5761. [PMID: 35916753 DOI: 10.1021/acs.orglett.2c02237] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
β-Lactam antibiotics are one of the most important antibacterial drug classes worldwide. This work will present the first prototype on-DNA β-lactam combinatorial library with novel structures and chemical space properties that would be significant for phenotypic screening to identify the next generation of antibiotics to combat the pervasive problem of bacterial resistance.
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Affiliation(s)
- Ayun Luo
- Pharmaron (Ningbo) Technology Development Co., Ltd., No. 800 Bin-Hai 4th Road, Hangzhou Bay New Zone, Ningbo, 315336 China
| | - Ziqi Zhang
- Pharmaron (Ningbo) Technology Development Co., Ltd., No. 800 Bin-Hai 4th Road, Hangzhou Bay New Zone, Ningbo, 315336 China
| | - Fanming Zeng
- Pharmaron (Ningbo) Technology Development Co., Ltd., No. 800 Bin-Hai 4th Road, Hangzhou Bay New Zone, Ningbo, 315336 China
| | - Xiuming Wang
- Pharmaron (Ningbo) Technology Development Co., Ltd., No. 800 Bin-Hai 4th Road, Hangzhou Bay New Zone, Ningbo, 315336 China
| | - Xue Zhao
- Pharmaron (Ningbo) Technology Development Co., Ltd., No. 800 Bin-Hai 4th Road, Hangzhou Bay New Zone, Ningbo, 315336 China
| | - Kexin Yang
- Pharmaron (Ningbo) Technology Development Co., Ltd., No. 800 Bin-Hai 4th Road, Hangzhou Bay New Zone, Ningbo, 315336 China
| | - Yun Jin Hu
- Pharmaron (Ningbo) Technology Development Co., Ltd., No. 800 Bin-Hai 4th Road, Hangzhou Bay New Zone, Ningbo, 315336 China
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9
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Potowski M, Kunig VBK, Eberlein L, Škopić MK, Vakalopoulos A, Kast SM, Brunschweiger A. Investigations Into Chemically Stabilized Four-Letter DNA for DNA-Encoded Chemistry. Front Chem 2022; 10:894563. [PMID: 35755251 PMCID: PMC9218945 DOI: 10.3389/fchem.2022.894563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 05/16/2022] [Indexed: 12/02/2022] Open
Abstract
DNA-encoded libraries are a prime technology for target-based small molecule screening. Native DNA used as genetic compound barcode is chemically vulnerable under many reaction conditions. DNA barcodes that are composed of pyrimidine nucleobases, 7-deazaadenine, and 7-deaza-8-azaguanine have been investigated for their suitability for encoded chemistry both experimentally and computationally. These four-letter barcodes were readily ligated by T4 ligation, amplifiable by Taq polymerase, and the resultant amplicons were correctly sequenced. Chemical stability profiling showed a superior chemical stability compared to native DNA, though higher susceptibility to depurination than a three-letter code based on pyrimidine DNA and 7-deazaadenine.
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Affiliation(s)
- Marco Potowski
- Department of Chemistry and Chemical Biology, Medicinal Chemistry, TU Dortmund University, Dortmund, Germany
| | - Verena B K Kunig
- Department of Chemistry and Chemical Biology, Medicinal Chemistry, TU Dortmund University, Dortmund, Germany
| | - Lukas Eberlein
- Department of Chemistry and Chemical Biology, Physical Chemistry, TU Dortmund University, Dortmund, Germany
| | - Mateja Klika Škopić
- Department of Chemistry and Chemical Biology, Medicinal Chemistry, TU Dortmund University, Dortmund, Germany
| | - Alexandros Vakalopoulos
- Bayer AG, Pharmaceuticals, Research and Development, Synthetic Modalities, Wuppertal, Germany
| | - Stefan M Kast
- Department of Chemistry and Chemical Biology, Physical Chemistry, TU Dortmund University, Dortmund, Germany
| | - Andreas Brunschweiger
- Department of Chemistry and Chemical Biology, Medicinal Chemistry, TU Dortmund University, Dortmund, Germany
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10
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Yang S, Zhao G, Gao Y, Sun Y, Zhang G, Fan X, Li Y, Li Y. In-solution direct oxidative coupling for the integration of sulfur/selenium into DNA-encoded chemical libraries. Chem Sci 2022; 13:2604-2613. [PMID: 35340849 PMCID: PMC8890091 DOI: 10.1039/d1sc06268a] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/29/2022] [Indexed: 12/27/2022] Open
Abstract
Sulfur/selenium-containing electron-rich arenes (ERAs) exist in a wide range of both approved and investigational drugs with diverse pharmacological activities. These unique chemical structures and bioactive properties, if combined with the emerging DNA-encoded chemical library (DEL) technique, would facilitate drug and chemical probe discovery. However, it remains challenging, as there is no general DNA-compatible synthetic methodology available for the formation of C-S and C-Se bonds in aqueous solution. Herein, an in-solution direct oxidative coupling procedure that could efficiently integrate sulfur/selenium into the ERA under mild conditions is presented. This method features simple DNA-conjugated electron-rich arenes with a broad substrate scope and a transition-metal free process. Furthermore, this synthetic methodology, examined by a scale-up reaction test and late-stage precise modification in a mock peptide-like DEL synthesis, will enable its utility for the synthesis of sulfur/selenium-containing DNA-encoded libraries and the discovery of bioactive agents.
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Affiliation(s)
- Shilian Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
| | - Guixian Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
| | - Yuting Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
| | - Yang Sun
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
| | - Gong Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
| | - Xiaohong Fan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
- Pharmaceutical Department of Chongqing Three Gorges Central Hospital, Chongqing University Chongqing 404100 P. R. China
| | - Yangfeng Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
| | - Yizhou Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University Chongqing 401331 P. R. China
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University Chongqing 400044 P. R. China
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11
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Ma F, Li J, Zhang S, Gu Y, Tan T, Chen W, Wang S, Xu H, Yang G, Lerner RA. Metal-Catalyzed One-Pot On-DNA Syntheses of Diarylmethane and Thioether Derivatives. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05338] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fei Ma
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Jie Li
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Shuning Zhang
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Yuang Gu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Tingting Tan
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Wanting Chen
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Shuyue Wang
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Hongtao Xu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Guang Yang
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Richard A. Lerner
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
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12
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Hosseini A, Motavalizadehkakhky A, Ghobadi N, Gholamzadeh P. Aza-Diels-Alder reactions in the synthesis of tetrahydroquinoline structures. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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13
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Hunter JH, Potowski M, Stanway-Gordon HA, Madin A, Pairaudeau G, Brunschweiger A, Waring MJ. Functional Group Tolerance of a Micellar on-DNA Suzuki-Miyaura Cross-Coupling Reaction for DNA-Encoded Library Design. J Org Chem 2021; 86:17930-17935. [PMID: 34816720 DOI: 10.1021/acs.joc.1c02259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
DNA-encoded libraries (DELs) offer great promise for the discovery of new ligands for proteins. Many current reactions used for DEL synthesis do not proceed efficiently over a wide range of substrates. Combining a diverse array of multicomponent reactions with micellar-promoted Suzuki-Miyaura cross-coupling provides a strategy for synthesizing highly diverse DELs with exceptionally high fidelity. These results demonstrate that the micellar Suzuki-Miyaura reaction has exceptional functional group tolerance and broad applicability.
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Affiliation(s)
- James H Hunter
- Cancer Research UK Newcastle Drug Discovery Unit, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Marco Potowski
- Research Group Medicinal Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Harriet A Stanway-Gordon
- Cancer Research UK Newcastle Drug Discovery Unit, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
| | - Andrew Madin
- Hit Discovery, Discovery Sciences, R&D, AstraZeneca, Cambridge CB4 0WG, U.K
| | - Garry Pairaudeau
- Exscientia, Schrödinger Building, Oxford Science Park, Oxford OX4 4GE, U.K
| | - Andreas Brunschweiger
- Research Group Medicinal Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Michael J Waring
- Cancer Research UK Newcastle Drug Discovery Unit, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K
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14
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Fair RJ, Walsh RT, Hupp CD. The expanding reaction toolkit for DNA-encoded libraries. Bioorg Med Chem Lett 2021; 51:128339. [PMID: 34478840 DOI: 10.1016/j.bmcl.2021.128339] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/13/2021] [Accepted: 08/20/2021] [Indexed: 12/30/2022]
Abstract
Over the past decade, DNA-encoded libraries (DELs) have emerged as a leading platform for small molecule drug discovery among pharmaceutical companies, biotech companies and academic drug hunters alike. This revolutionary technology has tremendous potential that is yet to be fully realized, as the exploration of therapeutically relevant chemical space is fueled by the ever-expanding repertoire of DNA-compatible reactions used to construct the libraries. Advances in direct coupling reactions, like photo-catalytic cross couplings, unique cyclizations such as the formation of 1,2,4-oxadiazoles, and new functional group transformations are valuable contributions to the DEL reaction toolkit, and indicate where future reaction development efforts should focus in order to maximize the productivity of DELs.
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Affiliation(s)
| | - Ryan T Walsh
- X-Chem Inc., 100 Beaver Street, Waltham, MA 02453, USA
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15
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Potowski M, Kunig VBK, Eberlein L, Vakalopoulos A, Kast SM, Brunschweiger A. Chemisch stabilisierte DNA‐Codes für DNA‐kodierte Chemie. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marco Potowski
- TU Dortmund University Faculty of Chemistry and Chemical Biology Medicinal Chemistry Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Verena B. K. Kunig
- TU Dortmund University Faculty of Chemistry and Chemical Biology Medicinal Chemistry Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Lukas Eberlein
- TU Dortmund University Faculty of Chemistry and Chemical Biology Physical Chemistry Otto-Hahn-Straße 4a 44227 Dortmund Deutschland
| | | | - Stefan M. Kast
- TU Dortmund University Faculty of Chemistry and Chemical Biology Physical Chemistry Otto-Hahn-Straße 4a 44227 Dortmund Deutschland
| | - Andreas Brunschweiger
- TU Dortmund University Faculty of Chemistry and Chemical Biology Medicinal Chemistry Otto-Hahn-Straße 6 44227 Dortmund Deutschland
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16
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Potowski M, Kunig VBK, Eberlein L, Vakalopoulos A, Kast SM, Brunschweiger A. Chemically Stabilized DNA Barcodes for DNA-Encoded Chemistry. Angew Chem Int Ed Engl 2021; 60:19744-19749. [PMID: 34153170 PMCID: PMC8456907 DOI: 10.1002/anie.202104348] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/10/2021] [Indexed: 12/18/2022]
Abstract
DNA‐encoded compound libraries are a widely used small molecule screening technology. One important aim in library design is the coverage of chemical space through structurally diverse molecules. Yet, the chemical reactivity of native DNA barcodes limits the toolbox of reactions for library design. Substituting the chemically vulnerable purines by 7‐deazaadenine, which exhibits tautomerization stability similar to natural adenine with respect to the formation of stable Watson–Crick pairs, yielded ligation‐competent, amplifiable, and readable DNA barcodes for encoded chemistry with enhanced stability against protic acid‐ and metal ion‐promoted depurination. The barcode stability allowed for straightforward translation of 16 exemplary reactions that included isocyanide multicomponent reactions, acid‐promoted Pictet–Spengler and Biginelli reactions, and metal‐promoted pyrazole syntheses on controlled pore glass‐coupled barcodes for diverse DEL design. The Boc protective group of reaction products offered a convenient handle for encoded compound purification.
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Affiliation(s)
- Marco Potowski
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, Otto-Hahn-Strasse 6, 44227, Dortmund, Germany
| | - Verena B K Kunig
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, Otto-Hahn-Strasse 6, 44227, Dortmund, Germany
| | - Lukas Eberlein
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Physical Chemistry, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany
| | | | - Stefan M Kast
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Physical Chemistry, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany
| | - Andreas Brunschweiger
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, Otto-Hahn-Strasse 6, 44227, Dortmund, Germany
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17
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Potowski M, Lüttig R, Vakalopoulos A, Brunschweiger A. Copper(I/II)-Promoted Diverse Imidazo[1,2-α]pyridine Synthesis on Solid-Phase Bound DNA Oligonucleotides for Encoded Library Design. Org Lett 2021; 23:5480-5484. [PMID: 34181416 DOI: 10.1021/acs.orglett.1c01834] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DNA-encoded libraries designed around heterocyclic scaffolds have proven highly productive in target-based screening. Here, we show the synthesis of imidazopyridines on a controlled pore glass-coupled DNA oligonucleotide for solid phase-initiated encoded library synthesis. The target compounds were synthesized by a variant of the A3 coupling reaction from aminopyridines, alkynes, and aldehydes promoted by copper(I/II) and furnished diverse substituted scaffolds with functionalities for library design. Although proceeding under forcing conditions, it produced minimal DNA damage.
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Affiliation(s)
- Marco Potowski
- Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
| | - Ricarda Lüttig
- Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
| | | | - Andreas Brunschweiger
- Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
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18
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Klika Škopić M, Gramse C, Oliva R, Pospich S, Neukirch L, Manisegaran M, Raunser S, Winter R, Weberskirch R, Brunschweiger A. Towards DNA-Encoded Micellar Chemistry: DNA-Micelle Association and Environment Sensitivity of Catalysis. Chemistry 2021; 27:10048-10057. [PMID: 33979454 PMCID: PMC8361662 DOI: 10.1002/chem.202100980] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Indexed: 02/06/2023]
Abstract
The development of DNA-compatible reaction methodologies is a central theme to advance DNA-encoded screening library technology. Recently, we were able to show that sulfonic acid-functionalized block copolymer micelles facilitated Brønsted acid-promoted reactions such as the Povarov reaction on DNA-coupled starting materials with minimal DNA degradation. Here, the impact of polymer composition on micelle shape, and reaction conversion was investigated. A dozen sulfonic acid-functionalized block copolymers of different molar mass and composition were prepared by RAFT polymerization and were tested in the Povarov reaction, removal of the Boc protective group, and the Biginelli reaction. The results showed trends in the polymer structure-micellar catalytic activity relationship. For instance, micelles composed of block copolymers with shorter acrylate ester chains formed smaller particles and tended to provide faster reaction kinetics. Moreover, fluorescence quenching experiments as well as circular dichroism spectroscopy showed that DNA-oligomer-conjugates, although highly water-soluble, accumulated very effectively in the micellar compartments, which is a prerequisite for carrying out a DNA-encoded reaction in the presence of polymer micelles.
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Affiliation(s)
- Mateja Klika Škopić
- Medicinal ChemistryFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
| | - Christian Gramse
- Polymer Hybrid SystemsFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
| | - Rosario Oliva
- Physical Chemistry – Biophysical ChemistryFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 4a44227DortmundGermany
| | - Sabrina Pospich
- Department of Structural BiochemistryMax Planck Institute of Molecular PhysiologyOtto-Hahn-Straße 1144227DortmundGermany
| | - Laura Neukirch
- Medicinal ChemistryFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
| | - Magiliny Manisegaran
- Physical Chemistry – Biophysical ChemistryFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 4a44227DortmundGermany
| | - Stefan Raunser
- Department of Structural BiochemistryMax Planck Institute of Molecular PhysiologyOtto-Hahn-Straße 1144227DortmundGermany
| | - Roland Winter
- Physical Chemistry – Biophysical ChemistryFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 4a44227DortmundGermany
| | - Ralf Weberskirch
- Polymer Hybrid SystemsFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
| | - Andreas Brunschweiger
- Medicinal ChemistryFaculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
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19
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Abstract
Click chemistry, proposed nearly 20 years ago, promised access to novel chemical space by empowering combinatorial library synthesis with a "few good reactions". These click reactions fulfilled key criteria (broad scope, quantitative yield, abundant starting material, mild reaction conditions, and high chemoselectivity), keeping the focus on molecules that would be easy to make, yet structurally diverse. This philosophy bears a striking resemblance to DNA-encoded library (DEL) technology, the now-dominant combinatorial chemistry paradigm. This review highlights the similarities between click and DEL reaction design and deployment in combinatorial library settings, providing a framework for the design of new DEL synthesis technologies to enable next-generation drug discovery.
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Affiliation(s)
- Patrick R Fitzgerald
- Skaggs Doctoral Program in the Chemical and Biological Sciences, The Scripps Research Institute, 130 Scripps Way, Jupiter, Florida 33458, United States
| | - Brian M Paegel
- Departments of Pharmaceutical Sciences, Chemistry, & Biomedical Engineering, University of California, Irvine, 101 Theory Suite 100, Irvine, California 92617, United States
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, Florida 33458, United States
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20
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Lenci E, Baldini L, Trabocchi A. Diversity-oriented synthesis as a tool to expand the chemical space of DNA-encoded libraries. Bioorg Med Chem 2021; 41:116218. [PMID: 34030087 DOI: 10.1016/j.bmc.2021.116218] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 12/12/2022]
Abstract
DNA-encoded libraries (DEL) represent a powerful technology for generating compound collections for drug discovery campaigns, that have allowed for the selection of many hit compounds over last three decades. However, the application of split-and-pool combinatorial methodologies, as well as the limitation imposed by DNA-compatible chemistry, has often brought to a limited exploration of the chemical space, with an over-representation of flat aromatic or peptide-like structures, whereas a higher scaffold complexity is generally associated with a more successful biological activity of the library. In this context, the application of Diversity-Oriented Synthesis, capable of creating sp3-rich molecular entities even starting from simple flat building blocks, can represent an efficient strategy to significantly broaden the chemical space explored by DELs. In this review, we present selected examples of DNA-compatible complexity-generating reactions that can be applied for the generation of DNA-encoded DOS libraries, including: (i) multicomponent reactions; (ii) C-H/C-X functionalization; (iii) tandem approaches; (iv) cycloadditions; (v) reactions introducing privileged elements. Also, selected case studies on the generation of DELs with high scaffold diversity are discussed, reporting their application in drug discovery programs.
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Affiliation(s)
- Elena Lenci
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Italy
| | - Lorenzo Baldini
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Italy
| | - Andrea Trabocchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Italy; Interdepartmental Center for Preclinical Development of Molecular Imaging (CISPIM), University of Florence, Viale Morgagni 85, 50134 Florence, Italy.
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21
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On-resin multicomponent protocols for biopolymer assembly and derivatization. Nat Protoc 2021; 16:561-578. [PMID: 33473197 DOI: 10.1038/s41596-020-00445-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/13/2020] [Indexed: 01/29/2023]
Abstract
Solid-phase synthesis represents the methodological showcase for technological advances such as split-and-pool combinatorial chemistry and the automated synthesis of peptides, nucleic acids and polysaccharides. These strategies involve iterative coupling cycles that do not generate functional diversity besides that incorporated by the amino acids, nucleosides and monosaccharide building blocks. In sharp contrast, multicomponent reactions (MCRs) are traditionally used to generate both skeletal and appendage diversity in short, batchwise procedures. On-resin MCRs have traditionally been employed for the construction of heterocycle and peptidomimetic libraries, but that scenario has changed recently, and today the focus is more on the solid-phase derivatization of peptides and oligonucleotides. This review presents relevant experimental details and addresses the synthetic scope of such on-resin multicomponent protocols employed to accomplish specific biopolymer covalent modifications that are practically inviable by traditional solution-phase methodologies. Recommendations are provided to facilitate the implementation of solid-supported protocols and avoid possible pitfalls associated with the selection of the polymeric resin, the solvent and the order and amount of the reagents employed. We describe procedures comprising the multicomponent lipidation, biotinylation and labeling of both termini and the side chains, as well as the use of MCRs in the traceless on-resin synthesis of ligated and cyclic peptides. Solid-phase protocols for the assembly of α-helical and parallel β-sheet peptides as well as hybrid peptide-peptoid and peptide-peptide nucleic acid architectures are described. Finally, the solid-supported multicomponent derivatization of DNA oligonucleotides is illustrated as part of the DNA-encoded library technology relying on MCR-derived heterocyclic compounds.
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22
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Shi Y, Wu YR, Yu JQ, Zhang WN, Zhuang CL. DNA-encoded libraries (DELs): a review of on-DNA chemistries and their output. RSC Adv 2021; 11:2359-2376. [PMID: 35424149 PMCID: PMC8693808 DOI: 10.1039/d0ra09889b] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 12/21/2020] [Indexed: 12/27/2022] Open
Abstract
A DNA-encoded library is a collection of small molecules covalently linked to DNA that has unique information about the identity and the structure of each library member. A DNA-encoded chemical library (DEL) is broadly adopted by major pharmaceutical companies and used in numerous drug discovery programs. The application of the DEL technology is advantageous at the initial period of drug discovery because of reduced cost, time, and storage space for the identification of target compounds. The key points for the construction of DELs comprise the development and the selection of the encoding methods, transfer of routine chemical reaction from off-DNA to on-DNA, and exploration of new chemical reactions on DNA. The limitations in the chemical space and the diversity of DEL were reduced gradually by using novel DNA-compatible reactions based on the formation and the cleavage of various bonds. Here, we summarized a series of novel DNA-compatible chemistry reactions for DEL building blocks and analysed the druggability of screened hit molecules via DELs in the past five years.
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Affiliation(s)
- Ying Shi
- School of Pharmacy, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University 1160 Shengli Street Yinchuan 750004 China
| | - Yan-Ran Wu
- School of Pharmacy, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University 1160 Shengli Street Yinchuan 750004 China
| | - Jian-Qiang Yu
- School of Pharmacy, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University 1160 Shengli Street Yinchuan 750004 China
| | - Wan-Nian Zhang
- School of Pharmacy, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University 1160 Shengli Street Yinchuan 750004 China
- School of Pharmacy, Second Military Medical University 325 Guohe Road Shanghai 200433 China
| | - Chun-Lin Zhuang
- School of Pharmacy, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University 1160 Shengli Street Yinchuan 750004 China
- School of Pharmacy, Second Military Medical University 325 Guohe Road Shanghai 200433 China
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23
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Wang X, Liu J, Yan Z, Liu X, Liu S, Suo Y, Lu W, Yue J, Chen K, Jiang H, Zhao Y, Zheng M, Dai D, Lu X. Diversified strategy for the synthesis of DNA-encoded oxindole libraries. Chem Sci 2021; 12:2841-2847. [PMID: 34164048 PMCID: PMC8179416 DOI: 10.1039/d0sc06696f] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
DNA-encoded library technology (DELT) employs DNA as a barcode to track the sequence of chemical reactions and enables the design and synthesis of libraries with billions of small molecules through combinatorial expansion. This powerful technology platform has been successfully demonstrated for hit identification and target validation for many types of diseases. As a highly integrated technology platform, DEL is capable of accelerating the translation of synthetic chemistry by using on-DNA compatible reactions or off-DNA scaffold synthesis. Herein, we report the development of a series of novel on-DNA transformations based on oxindole scaffolds for the design and synthesis of diversity-oriented DNA-encoded libraries for screening. Specifically, we have developed 1,3-dipolar cyclizations, cyclopropanations, ring-opening of reactions of aziridines and Claisen–Schmidt condensations to construct diverse oxindole derivatives. The majority of these transformations enable a diversity-oriented synthesis of DNA-encoded oxindole libraries which have been used in the successful hit identification for three protein targets. We have demonstrated that a diversified strategy for DEL synthesis could accelerate the application of synthetic chemistry for drug discovery. Constructing DNA-encoded oxindole libraries by a diversified strategy.![]()
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Affiliation(s)
- Xuan Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China .,Amgen Asia R&D Center, Amgen Biopharmaceutical R&D (Shanghai) Co., Ltd. 4560 Jinke Road, Building No. 2, 13th Floor, Pudong Shanghai 201210 P. R. China
| | - Jiaxiang Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Ziqin Yan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Xiaohong Liu
- Shanghai Institute for Advanced Immunochemical Studies, School of Life Science and Technology, ShanghaiTech University Pudong Shanghai 201210 P. R. China.,Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Sixiu Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Yanrui Suo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Weiwei Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Jinfeng Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Kaixian Chen
- Shanghai Institute for Advanced Immunochemical Studies, School of Life Science and Technology, ShanghaiTech University Pudong Shanghai 201210 P. R. China.,Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Hualiang Jiang
- Shanghai Institute for Advanced Immunochemical Studies, School of Life Science and Technology, ShanghaiTech University Pudong Shanghai 201210 P. R. China.,Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Yujun Zhao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
| | - Mingyue Zheng
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China.,University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Dongcheng Dai
- Amgen Asia R&D Center, Amgen Biopharmaceutical R&D (Shanghai) Co., Ltd. 4560 Jinke Road, Building No. 2, 13th Floor, Pudong Shanghai 201210 P. R. China
| | - Xiaojie Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 P. R. China
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24
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Priego J, de Pedro Beato E, Benavides J, Gironda-Martínez A, González F, Blas J, Martín-Ortega MD, Rama-Garda R, Ezquerra J, Toledo MA, Torrado A. On-DNA Palladium-Catalyzed Hydrogenation-like Reaction Suitable for DNA-Encoded Library Synthesis. Bioconjug Chem 2020; 32:88-93. [PMID: 33356163 DOI: 10.1021/acs.bioconjchem.0c00566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein we describe a method to orthogonally remove on-DNA N-Cbz, N-Alloc, N-Allyl, O-Bn, and O-Allyl protecting groups in the presence of other common protecting groups to afford free amines and carboxylic acids, respectively. The developed method uses NaBH4 as the source of hydrogen in the presence of Pd(OAc)2 under DNA aqueous conditions. In addition, under the developed conditions we were able to successfully hydrogenate triple and double bonds to totally saturated compounds. Furthermore, we introduce a new alternative procedure to reduce azides and aromatic nitro compounds to primary amines.
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Affiliation(s)
- Julián Priego
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
| | | | - Jesús Benavides
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
| | | | - Fernando González
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
| | - Jesús Blas
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
| | | | - Ramón Rama-Garda
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
| | - Jesús Ezquerra
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
| | - Miguel A Toledo
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
| | - Alicia Torrado
- Centro de Investigación Lilly, S. A., 28108 Alcobendas, Madrid, Spain
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25
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Fan Z, Zhao S, Liu T, Shen PX, Cui ZN, Zhuang Z, Shao Q, Chen JS, Ratnayake AS, Flanagan ME, Kölmel DK, Piotrowski DW, Richardson P, Yu JQ. Merging C(sp 3)-H activation with DNA-encoding. Chem Sci 2020; 11:12282-12288. [PMID: 34094436 PMCID: PMC8162953 DOI: 10.1039/d0sc03935g] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
DNA-encoded library (DEL) technology has the potential to dramatically expedite hit identification in drug discovery owing to its ability to perform protein affinity selection with millions or billions of molecules in a few experiments. To expand the molecular diversity of DEL, it is critical to develop different types of DNA-encoded transformations that produce billions of molecules with distinct molecular scaffolds. Sequential functionalization of multiple C–H bonds provides a unique avenue for creating diversity and complexity from simple starting materials. However, the use of water as solvent, the presence of DNA, and the extremely low concentration of DNA-encoded coupling partners (0.001 M) have hampered the development of DNA-encoded C(sp3)–H activation reactions. Herein, we report the realization of palladium-catalyzed C(sp3)–H arylation of aliphatic carboxylic acids, amides and ketones with DNA-encoded aryl iodides in water. Notably, the present method enables the use of alternative sets of monofunctional building blocks, providing a linchpin to facilitate further setup for DELs. Furthermore, the C–H arylation chemistry enabled the on-DNA synthesis of structurally-diverse scaffolds containing enriched C(sp3) character, chiral centers, cyclopropane, cyclobutane, and heterocycles. DNA-compatible C(sp3)–H activation reactions of aliphatic carboxylic acids, amides, and ketones were developed for efficient access to DEL synthesis.![]()
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Affiliation(s)
- Zhoulong Fan
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Shuai Zhao
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Tao Liu
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Peng-Xiang Shen
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Zi-Ning Cui
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Zhe Zhuang
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Qian Shao
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Jason S Chen
- Automated Synthesis Facility, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
| | - Anokha S Ratnayake
- Pfizer Medicinal Chemistry Eastern Point Road, Groton Connecticut 06340 USA
| | - Mark E Flanagan
- Pfizer Medicinal Chemistry Eastern Point Road, Groton Connecticut 06340 USA
| | - Dominik K Kölmel
- Pfizer Medicinal Chemistry Eastern Point Road, Groton Connecticut 06340 USA
| | - David W Piotrowski
- Pfizer Medicinal Chemistry Eastern Point Road, Groton Connecticut 06340 USA
| | - Paul Richardson
- Pfizer Medicinal Chemistry, 10578 Science Center Drive San Diego CA 09121 USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute 10550 North Torrey Pines Road, La Jolla CA 92037 USA
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26
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Wen X, Duan Z, Liu J, Lu W, Lu X. On-DNA Cross-Dehydrogenative Coupling Reaction toward the Synthesis of Focused DNA-Encoded Tetrahydroisoquinoline Libraries. Org Lett 2020; 22:5721-5725. [DOI: 10.1021/acs.orglett.0c01565] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xin Wen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road,
Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, P. R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Zhiqiang Duan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road,
Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, P. R. China
| | - Jiaxiang Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road,
Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, P. R. China
| | - Weiwei Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road,
Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, P. R. China
| | - Xiaojie Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road,
Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, P. R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
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27
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Bobers J, Grühn J, Höving S, Pyka T, Kockmann N. Two-Phase Flow in a Coiled Flow Inverter: Process Development from Batch to Continuous Flow. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00152] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jens Bobers
- Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, TU Dortmund University, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
| | - Julia Grühn
- Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, TU Dortmund University, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
| | - Stefan Höving
- Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, TU Dortmund University, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
| | - Tobias Pyka
- Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, TU Dortmund University, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
| | - Norbert Kockmann
- Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, TU Dortmund University, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
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28
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Götte K, Chines S, Brunschweiger A. Reaction development for DNA-encoded library technology: From evolution to revolution? Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151889] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Xu H, Gu Y, Zhang S, Xiong H, Ma F, Lu F, Ji Q, Liu L, Ma P, Hou W, Yang G, Lerner RA. A Chemistry for Incorporation of Selenium into DNA‐Encoded Libraries. Angew Chem Int Ed Engl 2020; 59:13273-13280. [DOI: 10.1002/anie.202003595] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Hongtao Xu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Yuang Gu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
- School of Life Science and Technology ShanghaiTech University 201210 Shanghai China
- Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shuning Zhang
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
- School of Life Science and Technology ShanghaiTech University 201210 Shanghai China
- Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Huan Xiong
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Fei Ma
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Fengping Lu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Qun Ji
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Lili Liu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Peixiang Ma
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Wei Hou
- College of Pharmaceutical Science Institute of Drug Development & Chemical Biology Zhejiang University of Technology Hangzhou 310014 China
| | - Guang Yang
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Richard A. Lerner
- Department of Chemistry Scripps Research Institute La Jolla CA 92037 USA
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30
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Xu H, Gu Y, Zhang S, Xiong H, Ma F, Lu F, Ji Q, Liu L, Ma P, Hou W, Yang G, Lerner RA. A Chemistry for Incorporation of Selenium into DNA‐Encoded Libraries. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003595] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hongtao Xu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Yuang Gu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
- School of Life Science and Technology ShanghaiTech University 201210 Shanghai China
- Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shuning Zhang
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
- School of Life Science and Technology ShanghaiTech University 201210 Shanghai China
- Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Huan Xiong
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Fei Ma
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Fengping Lu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Qun Ji
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Lili Liu
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Peixiang Ma
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Wei Hou
- College of Pharmaceutical Science Institute of Drug Development & Chemical Biology Zhejiang University of Technology Hangzhou 310014 China
| | - Guang Yang
- Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech University 201210 Shanghai China
| | - Richard A. Lerner
- Department of Chemistry Scripps Research Institute La Jolla CA 92037 USA
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31
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Madsen D, Azevedo C, Micco I, Petersen LK, Hansen NJV. An overview of DNA-encoded libraries: A versatile tool for drug discovery. PROGRESS IN MEDICINAL CHEMISTRY 2020; 59:181-249. [PMID: 32362328 DOI: 10.1016/bs.pmch.2020.03.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
DNA-encoded libraries (DELs) are collections of small molecules covalently attached to amplifiable DNA tags carrying unique information about the structure of each library member. A combinatorial approach is used to construct the libraries with iterative DNA encoding steps, facilitating tracking of the synthetic history of the attached compounds by DNA sequencing. Various screening protocols have been developed which allow protein target binders to be selected out of pools containing up to billions of different small molecules. The versatile methodology has allowed identification of numerous biologically active compounds and is now increasingly being adopted as a tool for lead discovery campaigns and identification of chemical probes. A great focus in recent years has been on developing DNA compatible chemistries that expand the structural diversity of the small molecule library members in DELs. This chapter provides an overview of the challenges and accomplishments in DEL technology, reviewing the technological aspects of producing and screening DELs with a perspective on opportunities, limitations, and future directions.
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32
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Potowski M, Esken R, Brunschweiger A. Translation of the copper/bipyridine-promoted Petasis reaction to solid phase-coupled DNA for encoded library synthesis. Bioorg Med Chem 2020; 28:115441. [PMID: 32222338 DOI: 10.1016/j.bmc.2020.115441] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/28/2020] [Accepted: 03/12/2020] [Indexed: 11/28/2022]
Abstract
The Petasis three-component reaction gives rise to diverse substituted α-aryl glycines from readily available amines, boronic acids and glyoxalic acid. Thus, this reaction is highly attractive for DNA-encoded small molecule screening library synthesis. The Petasis reaction is for instance promoted by a potentially DNA damaging copper(I)/bipyridine reagent system in dry organic solvents. We found that solid phase-coupled DNA strands tolerated this reagent system at elevated temperature allowing for synthesis of diverse substituted DNA-tagged α-aryl glycines from DNA-conjugated secondary amines.
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Affiliation(s)
- Marco Potowski
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, D 44227 Dortmund, Germany
| | - Robin Esken
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, D 44227 Dortmund, Germany
| | - Andreas Brunschweiger
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, D 44227 Dortmund, Germany.
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33
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Bobers J, Škopić MK, Dinter R, Sakthithasan P, Neukirch L, Gramse C, Weberskirch R, Brunschweiger A, Kockmann N. Design of an Automated Reagent-Dispensing System for Reaction Screening and Validation with DNA-Tagged Substrates. ACS COMBINATORIAL SCIENCE 2020; 22:101-108. [PMID: 32053337 DOI: 10.1021/acscombsci.9b00207] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Laboratory automation strategies have vast potential for accelerating discovery processes. They enable higher efficiency and throughput for time-consuming screening procedures and reduce error-prone manual steps. Automating repetitive procedures can for instance support chemists in optimizing chemical reactions. Particularly, the technology of DNA-encoded libraries (DELs) may benefit from automation techniques, since translation of chemical reactions to DNA-tagged reactants often requires screening of multiple reaction parameters and evaluation of large numbers of reactants. Here, we describe a portable, automated system for reagent dispensing that was designed from open source materials. The system was validated by performing amide coupling of carboxylic acids to DNA-linked amine and a micelle-mediated Povarov reaction to DNA-tagged hexahydropyrroloquinolines. The latter reaction required accurate pipetting of multiple components including different solvents and a surface-active reagent. Analysis of reactions demonstrated that the robotic system achieved high accuracy comparable to experimentation by an experienced chemist with the potential of higher throughput.
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Affiliation(s)
- Jens Bobers
- TU Dortmund University, Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
| | - Mateja Klika Škopić
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Robin Dinter
- TU Dortmund University, Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
| | - Piriyanth Sakthithasan
- TU Dortmund University, Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
| | - Laura Neukirch
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Christian Gramse
- Faculty of Chemistry and Chemical Biology, Polymer Hybrid Systems, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Ralf Weberskirch
- Faculty of Chemistry and Chemical Biology, Polymer Hybrid Systems, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Andreas Brunschweiger
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Medicinal Chemistry, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Norbert Kockmann
- TU Dortmund University, Department of Chemical and Biochemical Engineering, Laboratory of Equipment Design, Emil-Figge-Strasse 68, 44227 Dortmund, Germany
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