1
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Kumar Gupta S, Panda N. Palladium-Catalyzed C3-Carbaldehyde Directed Regioselective C2-Thioarylation of Indoles. Chem Asian J 2024:e202400272. [PMID: 38577719 DOI: 10.1002/asia.202400272] [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: 03/10/2024] [Revised: 04/04/2024] [Accepted: 04/04/2024] [Indexed: 04/06/2024]
Abstract
Palladium-catalyzed thioarylation of indoles by diaryl disulfides in the presence of phenyliododiacetate is reported. The directing potential of weakly coordinating aldehyde group present at 3-position of indole was exploited for regioselective C2-H thioarylation over the possible C4-H functionalization. Mechanistic studies reveal that the process involves initial generation of thioaryl radical followed by sequential C-H activation, thiolate transfer, and reductive elimination.
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Affiliation(s)
- Sandip Kumar Gupta
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Niranjan Panda
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India
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2
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Mallick S, Mandal T, Kumari N, Roy L, De Sarkar S. Divergent Electrochemical Synthesis of Indoles through pK a Regulation of Amides: Synthetic and Mechanistic Insights. Chemistry 2024; 30:e202304002. [PMID: 38290995 DOI: 10.1002/chem.202304002] [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: 11/30/2023] [Revised: 01/15/2024] [Accepted: 01/30/2024] [Indexed: 02/01/2024]
Abstract
A divergent synthetic approach to access highly substituted indole scaffolds is illustrated. By virtue of a tunable electrochemical strategy, distinct control over the C-3 substitution pattern was achieved by employing two analogous 2-styrylaniline precursors. The chemoselectivity is governed by the fine-tuning of the acidity of the amide proton, relying on the appropriate selection of N-protecting groups, and assisted by the reactivity of the electrogenerated intermediates. Detailed mechanistic investigations based on cyclic voltametric experiments and computational studies revealed the crucial role of water additive, which assists the proton-coupled electron transfer event for highly acidic amide precursors, followed by an energetically favorable intramolecular C-N coupling, causing exclusive fabrication of the C-3 unsubstituted indoles. Alternatively, the implementation of an electrogenerated cationic olefin activator delivers the C-3 substituted indoles through the preferential nucleophilic nature of the N-acyl amides. This electrochemical approach of judicious selection of N-protecting groups to regulate pKa/E° provides an expansion in the domain of switchable generation of heterocyclic derivatives in a sustainable fashion, with high regio- and chemoselectivity.
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Affiliation(s)
- Samrat Mallick
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| | - Tanumoy Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| | - Nidhi Kumari
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai-IOC Odisha Campus, Bhubaneswar, Bhubaneswar, 751013, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
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3
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Li C, Chen Y, Ye F, Chen J, Zheng J. Low-Valent-Tungsten-Catalyzed Aerobic Oxidative Cross-Dehydrogenative Coupling Reaction. Molecules 2023; 28:8071. [PMID: 38138561 PMCID: PMC10745622 DOI: 10.3390/molecules28248071] [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: 10/24/2023] [Revised: 11/30/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
A straightforward and convenient protocol was established for the synthesis of thiophosphates and 3-sulfenylated indoles via low-valent-tungsten-catalyzed aerobic oxidative cross-dehydrogenative coupling reactions. These reactions occur under mild conditions and simple operations with commercially available starting materials, processing the advantage of excellent atom and step economy, broad substrate scope, and good functional groups tolerance. Moreover, this transformation could be practiced on the gram scale, which exhibits great potential in the preparation of drug-derived or bioactive molecules.
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Affiliation(s)
- Chunsheng Li
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (Y.C.); (F.Y.)
| | - Yaoyang Chen
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (Y.C.); (F.Y.)
| | - Feihua Ye
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (Y.C.); (F.Y.)
| | - Junhua Chen
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (Y.C.); (F.Y.)
| | - Jia Zheng
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
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4
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Diatlova EA, Mechetin GV, Yudkina AV, Zharkov VD, Torgasheva NA, Endutkin AV, Shulenina OV, Konevega AL, Gileva IP, Shchelkunov SN, Zharkov DO. Correlated Target Search by Vaccinia Virus Uracil-DNA Glycosylase, a DNA Repair Enzyme and a Processivity Factor of Viral Replication Machinery. Int J Mol Sci 2023; 24:ijms24119113. [PMID: 37298065 DOI: 10.3390/ijms24119113] [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: 04/20/2023] [Revised: 05/13/2023] [Accepted: 05/21/2023] [Indexed: 06/12/2023] Open
Abstract
The protein encoded by the vaccinia virus D4R gene has base excision repair uracil-DNA N-glycosylase (vvUNG) activity and also acts as a processivity factor in the viral replication complex. The use of a protein unlike PolN/PCNA sliding clamps is a unique feature of orthopoxviral replication, providing an attractive target for drug design. However, the intrinsic processivity of vvUNG has never been estimated, leaving open the question whether it is sufficient to impart processivity to the viral polymerase. Here, we use the correlated cleavage assay to characterize the translocation of vvUNG along DNA between two uracil residues. The salt dependence of the correlated cleavage, together with the similar affinity of vvUNG for damaged and undamaged DNA, support the one-dimensional diffusion mechanism of lesion search. Unlike short gaps, covalent adducts partly block vvUNG translocation. Kinetic experiments show that once a lesion is found it is excised with a probability ~0.76. Varying the distance between two uracils, we use a random walk model to estimate the mean number of steps per association with DNA at ~4200, which is consistent with vvUNG playing a role as a processivity factor. Finally, we show that inhibitors carrying a tetrahydro-2,4,6-trioxopyrimidinylidene moiety can suppress the processivity of vvUNG.
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Affiliation(s)
- Evgeniia A Diatlova
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Ave., 630090 Novosibirsk, Russia
| | - Grigory V Mechetin
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Ave., 630090 Novosibirsk, Russia
| | - Anna V Yudkina
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Ave., 630090 Novosibirsk, Russia
| | - Vasily D Zharkov
- Biology Department, Tomsk State University, 634050 Tomsk, Russia
| | - Natalia A Torgasheva
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Ave., 630090 Novosibirsk, Russia
| | - Anton V Endutkin
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Ave., 630090 Novosibirsk, Russia
| | - Olga V Shulenina
- NRC "Kurchatov Institute"-B. P. Konstantinov Petersburg Nuclear Physics Institute, Leningrad Region, 188300 Gatchina, Russia
| | - Andrey L Konevega
- NRC "Kurchatov Institute"-B. P. Konstantinov Petersburg Nuclear Physics Institute, Leningrad Region, 188300 Gatchina, Russia
| | - Irina P Gileva
- State Research Center of Virology and Biotechnology Vector, Novosibirsk Region, 630559 Koltsovo, Russia
| | - Sergei N Shchelkunov
- State Research Center of Virology and Biotechnology Vector, Novosibirsk Region, 630559 Koltsovo, Russia
| | - Dmitry O Zharkov
- SB RAS Institute of Chemical Biology and Fundamental Medicine, 8 Lavrentieva Ave., 630090 Novosibirsk, Russia
- Department of Natural Sciences, Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk, Russia
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5
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Wang J, Shahed-Ai-Mahmud M, Chen A, Li K, Tan H, Joyce R. An Overview of Antivirals against Monkeypox Virus and Other Orthopoxviruses. J Med Chem 2023; 66:4468-4490. [PMID: 36961984 DOI: 10.1021/acs.jmedchem.3c00069] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
The current monkeypox outbreaks during the COVID-19 pandemic have reignited interest in orthopoxvirus antivirals. Monkeypox belongs to the Orthopoxvirus genus of the Poxviridae family, which also includes the variola virus, vaccinia virus, and cowpox virus. Two orally bioavailable drugs, tecovirimat and brincidofovir, have been approved for treating smallpox infections. Given their human safety profiles and in vivo antiviral efficacy in animal models, both drugs have also been recommended to treat monkeypox infection. To facilitate the development of additional orthopoxvirus antivirals, we summarize the antiviral activity, mechanism of action, and mechanism of resistance of orthopoxvirus antivirals. This perspective covers both direct-acting and host-targeting antivirals with an emphasis on drug candidates showing in vivo antiviral efficacy in animal models. We hope to speed the orthopoxvirus antiviral drug discovery by providing medicinal chemists with insights into prioritizing proper drug targets and hits for further development.
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Affiliation(s)
- Jun Wang
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Md Shahed-Ai-Mahmud
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Angelo Chen
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Kan Li
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Haozhou Tan
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Ryan Joyce
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
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6
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Tang H, Zhang A. Human mpox: Biology, epidemiology, therapeutic options, and development of small molecule inhibitors. Med Res Rev 2023. [PMID: 36891882 DOI: 10.1002/med.21943] [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: 08/05/2022] [Revised: 01/22/2023] [Accepted: 02/26/2023] [Indexed: 03/10/2023]
Abstract
Although monkeypox (mpox) has been endemic in Western and Central Africa for 50 years, it has not received sufficient prophylactic and therapeutical attention to avoid evolving into an epidemic. From January 2022 to January 2023, more than 84,000 of mpox cases were reported from 110 countries worldwide. Case numbers appear to be rising every day, making mpox an increasing global public health threat for the foreseeable future. In this perspective, we review the known biology and epidemiology of mpox virus, together with the latest therapeutic options available for mpox treatment. Further, small molecule inhibitors against mpox virus and the future directions in this field are discussed as well.
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Affiliation(s)
- Hairong Tang
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and the Engineering Research Center of Cell and Therapeutic Antibody of the Ministry of Education, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Ao Zhang
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and the Engineering Research Center of Cell and Therapeutic Antibody of the Ministry of Education, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China.,Lingang Laboratory, Shanghai, China
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7
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Rios EAM, Gomes CMB, Silvério GL, Luz EQ, Ali S, D'Oca CDRM, Albach B, Campos RB, Rampon DS. Silver-catalyzed direct selanylation of indoles: synthesis and mechanistic insights. RSC Adv 2023; 13:914-925. [PMID: 36686957 PMCID: PMC9811358 DOI: 10.1039/d2ra06813c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/17/2022] [Indexed: 01/05/2023] Open
Abstract
Herein we describe the Ag(i)-catalyzed direct selanylation of indoles with diorganoyl diselenides. The reaction gave 3-selanylindoles with high regioselectivity and also allowed direct access to 2-selanylindoles when the C3 position of the indole ring was blocked via a process similar to Plancher rearrangement. Experimental analyses and density functional theory calculations were carried out in order to picture the reaction mechanism. Among the pathways considered (via concerted metalation-deprotonation, Ag(iii), radical, and electrophilic aromatic substitution), our findings support a classic electrophilic aromatic substitution via Lewis adducts between Ag(i) and diorganoyl diselenides. The results also afforded new insights into the interactions between Ag(i) and diorganoyl diselenides.
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Affiliation(s)
- Elise Ane Maluf Rios
- Department of Chemistry, Laboratory of Polymers and Catalysis (LaPoCa), Federal University of Paraná – UFPRP. O. Box 19061CuritibaPR81531-990Brazil
| | - Carla M. B. Gomes
- Department of Chemistry, Laboratory of Polymers and Catalysis (LaPoCa), Federal University of Paraná – UFPRP. O. Box 19061CuritibaPR81531-990Brazil
| | - Gabriel L. Silvério
- Department of Chemistry, Laboratory of Polymers and Catalysis (LaPoCa), Federal University of Paraná – UFPRP. O. Box 19061CuritibaPR81531-990Brazil
| | - Eduardo Q. Luz
- Department of Chemistry, Laboratory of Polymers and Catalysis (LaPoCa), Federal University of Paraná – UFPRP. O. Box 19061CuritibaPR81531-990Brazil
| | - Sher Ali
- University of São Paulo, Faculty of Animal Science and Food EngineeringPirassunungaSPBrazil
| | - Caroline da Ros Montes D'Oca
- Department of Chemistry, Laboratory of Polymers and Catalysis (LaPoCa), Federal University of Paraná – UFPRP. O. Box 19061CuritibaPR81531-990Brazil
| | - Breidi Albach
- Health Department, Unicesumar – The University Center of MaringáCuritibaPR81070-190Brazil
| | - Renan B. Campos
- Departamento Acadêmico de Química e Biologia, Universidade Tecnológica Federal do ParanáRua Deputado Heitor de Alencar Furtado, 500081280-340CuritibaBrazil
| | - Daniel S. Rampon
- Department of Chemistry, Laboratory of Polymers and Catalysis (LaPoCa), Federal University of Paraná – UFPRP. O. Box 19061CuritibaPR81531-990Brazil
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8
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Zhang J, Zhang B, He J, Shi H, Du Y. Divergent synthesis of 2-methylthioindole and 2-unsubstituted indole derivatives mediated by SOCl 2 and dimethyl/diethyl sulfoxides. Org Biomol Chem 2022; 20:7886-7890. [PMID: 36169012 DOI: 10.1039/d2ob01580c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free divergent synthesis of indole compounds dependent on a reagent via intramolecular C(sp2)-H amination was described. The reaction of 2-vinylanilines with DMSO/SOCl2 at 70 °C was found to give 2-thiomethylindoles, while replacing DMSO with diethyl sulfoxide afforded 2-unsubstituted indoles in a highly selective manner.
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Affiliation(s)
- Jingran Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Beibei Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Jiaxin He
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Haofeng Shi
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Yunfei Du
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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9
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Huang J, Chen LL, Chen ZM. Palladium-Catalyzed Three-Component Cross-Coupling of Conjugated Dienes with Indoles Using Ethynylbenziodazolones as Electrophilic Alkynylating Reagents. Org Lett 2022; 24:5777-5781. [PMID: 35912967 DOI: 10.1021/acs.orglett.2c02275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed regioselective 1,2-alkynyl-carbonalization of conjugated dienes with ethynylbenziodazolone (EBZ) and indoles has been developed for the first time. Various molecules containing alkenyl, alkynyl, and indole groups were readily obtained. Moreover, the resulting products can be applied to various derivatizations. This protocol uses EBZ as an electrophilic alkynylating reagent, avoiding the byproduct of dimerization of alkynes.
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Affiliation(s)
- Jie Huang
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Ling-Ling Chen
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Zhi-Min Chen
- School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
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10
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Mantellini F, Mari G, De Crescentini L, Favi G, Mancinelli M, Santeusanio S. Easy access to indole‐based bi‐sulfurylate‐heterocyclic scaffolds. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200299] [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)
- Fabio Mantellini
- Università degli Studi di Urbino "Carlo Bo'" Dipartimento di Scienze Biomolecolari Via I Maggetti 24 61029 Urbino ITALY
| | - Giacomo Mari
- University of Urbino Carlo Bo: Universita degli Studi di Urbino Carlo Bo dipartimento di scienze biomolecolari ITALY
| | - Lucia De Crescentini
- University of Urbino Carlo Bo: Universita degli Studi di Urbino Carlo Bo Dipartimento di Scienze Biomolecolari ITALY
| | - Gianfranco Favi
- University of Urbino Carlo Bo: Universita degli Studi di Urbino Carlo Bo Dipartimento di Scienze Biomolecolari ITALY
| | - Michele Mancinelli
- Alma Mater Studiorum Universita di Bologna: Universita degli Studi di Bologna Department of Industrial Chemistry “Toso Montanari” ITALY
| | - Stefania Santeusanio
- University of Urbino Carlo Bo: Universita degli Studi di Urbino Carlo Bo Dipartimento di Scienze Biomolecolari ITALY
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11
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Nuth M, Benakanakere MR, Ricciardi RP. Discovery of a potent cytotoxic agent that promotes G 2/M phase cell cycle arrest and apoptosis in a malignant human pharyngeal squamous carcinoma cell line. Int J Oncol 2022; 60:41. [PMID: 35211767 DOI: 10.3892/ijo.2022.5331] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/31/2022] [Indexed: 12/09/2022] Open
Abstract
Squamous cell carcinoma is the major form of malignancy that arises in head and neck cancer. The modest improvement in the 5‑year survival rate underpins its complex etiology and provides the impetus for the discovery of new therapeutics. The present study describes the discovery of an indole‑based small molecule (24a) that was a potent cytotoxic agent with antiproliferative and pro‑apoptotic properties against a pharyngeal carcinoma cell line, Detroit 562, effectively killing the cells at a half‑maximal inhibitory concentration of 0.03 µM, as demonstrated using cell proliferation studies. The antiproliferative property of 24a was demonstrated by its ability to promote G2/M blockade, as assessed by cell cycle analysis using flow cytometry and the monitoring of real‑time cell cycle progression by the fluorescence ubiquitination‑based cell cycle indicator. This pro‑apoptotic property is supported by the promotion of TUNEL‑staining and increase in the activities of caspases‑3/7 and ‑6, in addition to the expression of death receptors and the cleavage of poly (ADP‑ribose) polymerase 1 protein as demonstrated by western blotting. Given that Detroit 562 lacks functional p53, it is suggested that 24a acts independently of the tumor suppressor.
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Affiliation(s)
- Manunya Nuth
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Manjunatha R Benakanakere
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Robert P Ricciardi
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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12
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Sinha AK, Equbal D, Rastogi SK, Kumar S, Kumar R. An overview on Indole aryl sulfide/sulfone (IAS) as anti‐HIV non‐nucleoside reverse transcriptase inhibitors (NNRTIs). ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Arun Kumar Sinha
- CSIR-CDRI (Central Drug Research Institute) Medicinal and Process Chemistry Sitapur Road 226031 Lucknow INDIA
| | | | - Sumit K. Rastogi
- CSIR-CDRI: Central Drug Research Institute Medicinal and Process Chemistry INDIA
| | - Santosh Kumar
- CSIR-CDRI: Central Drug Research Institute Medicinal and process chemistry INDIA
| | - Ravindra Kumar
- CSIR-CDRI: Central Drug Research Institute Medicinal and process chemistry INDIA
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13
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Visible-Light-Induced, Graphene Oxide-Promoted C3-Chalcogenylation of Indoles Strategy under Transition-Metal-Free Conditions. Molecules 2022; 27:molecules27030772. [PMID: 35164036 PMCID: PMC8839487 DOI: 10.3390/molecules27030772] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/16/2022] [Accepted: 01/19/2022] [Indexed: 02/05/2023] Open
Abstract
An efficient and general method for the synthesis of 3-sulfenylindoles and 3-selenylindoles employing visible-light irradiation with graphene oxide as a promoter at room temperature has been achieved. The reaction features are high yields, simple operation, metal-free and iodine-free conditions, an easy-to-handle oxidant, and gram-scalable synthesis. This simple protocol allows one to access a wide range of 3-arylthioindoles, 3-arylselenylindoles, and even 3-thiocyanatoindoles with good to excellent yields.
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14
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An efficient studies on C-2 cyanomethylation of the indole synthesis: The electronic and spectroscopic characterization (FT-IR, NMR, UV-Vis), antioxidant activity, and theoretical calculations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131416] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Ghorai J, Kesavan A, Anbarasan P. Cp*Co(III)-catalyzed C2-thiolation and C2,C3-dithiolation of substituted indoles with N-(arylthio)succinimide. Chem Commun (Camb) 2021; 57:10544-10547. [PMID: 34553717 DOI: 10.1039/d1cc03760a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A general and efficient Cp*CoIII-catalyzed C2-thiolation and C2,C3-dithiolation of indole derivatives has been achieved employing N-(aryl/alkylthio)succinimide as a thiolating reagent. This external oxidant-free method utilizes only catalytic amounts of additive and tolerates various functional groups to afford various thiolated products in good yields. Control experiments revealed the importance of the Cp*CoIII-catalyst for both C2- and C3-thiolation.
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Affiliation(s)
- Jayanta Ghorai
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India.
| | - Arunachalam Kesavan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India.
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India.
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16
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Jacob C, Maes BUW, Evano G. Transient Directing Groups in Metal-Organic Cooperative Catalysis. Chemistry 2021; 27:13899-13952. [PMID: 34286873 DOI: 10.1002/chem.202101598] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Indexed: 12/13/2022]
Abstract
The direct functionalization of C-H bonds is among the most fundamental chemical transformations in organic synthesis. However, when the innate reactivity of the substrate cannot be utilized for the functionalization of a given single C-H bond, this selective C-H bond functionalization mostly relies on the use of directing groups that allow bringing the catalyst in close proximity to the C-H bond to be activated and these directing groups need to be installed before and cleaved after the transformation, which involves two additional undesired synthetic operations. These additional steps dramatically reduce the overall impact and the attractiveness of C-H bond functionalization techniques since classical approaches based on substrate pre-functionalization are sometimes still more straightforward and appealing. During the past decade, a different approach involving both the in situ installation and removal of the directing group, which can then often be used in a catalytic manner, has emerged: the transient directing group strategy. In addition to its innovative character, this strategy has brought C-H bond functionalization to an unprecedented level of usefulness and has enabled the development of remarkably efficient processes for the direct and selective introduction of functional groups onto both aromatic and aliphatic substrates. The processes unlocked by the development of these transient directing groups will be comprehensively overviewed in this review article.
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Affiliation(s)
- Clément Jacob
- Laboratoire de Chimie Organique, Service de Chimie et Physico-Chimie Organiques, Université libre de Bruxelles (ULB), Avenue F.D. Roosevelt 50, CP160/06, 1050, Brussels, Belgium.,Organic Synthesis Division, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Bert U W Maes
- Organic Synthesis Division, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et Physico-Chimie Organiques, Université libre de Bruxelles (ULB), Avenue F.D. Roosevelt 50, CP160/06, 1050, Brussels, Belgium
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17
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Goswami M, Dutta A, Paul P, Nongkhlaw R. Recent Developments on Catalyst‐Free, Visible‐Light‐Triggered Synthesis of Heterocyclic Scaffolds and Their Mechanistic Study. ChemistrySelect 2021. [DOI: 10.1002/slct.202102696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Munmee Goswami
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Arup Dutta
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Pooja Paul
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
| | - Rishanlang Nongkhlaw
- Centre for Advanced Studies in Chemistry Department of Chemistry North-Eastern Hill University Shillong 793022 INDIA
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18
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Bersch B, Tarbouriech N, Burmeister WP, Iseni F. Solution Structure of the C-terminal Domain of A20, the Missing Brick for the Characterization of the Interface between Vaccinia Virus DNA Polymerase and its Processivity Factor. J Mol Biol 2021; 433:167009. [PMID: 33901538 DOI: 10.1016/j.jmb.2021.167009] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/16/2021] [Accepted: 04/17/2021] [Indexed: 11/26/2022]
Abstract
Poxviruses are enveloped viruses with a linear, double-stranded DNA genome. Viral DNA synthesis is achieved by a functional DNA polymerase holoenzyme composed of three essential proteins. For vaccinia virus (VACV) these are E9, the catalytic subunit, a family B DNA polymerase, and the heterodimeric processivity factor formed by D4 and A20. The A20 protein links D4 to the catalytic subunit. High-resolution structures have been obtained for the VACV D4 protein in complex with an N-terminal fragment of A20 as well as for E9. In addition, biochemical studies provided evidence that a poxvirus-specific insertion (insert 3) in E9 interacts with the C-terminal residues of A20. Here, we provide solution structures of two different VACV A20 C-terminal constructs containing residues 304-426, fused at their C-terminus to either a BAP (Biotin Acceptor Peptide)-tag or a short peptide containing the helix of E9 insert 3. Together with results from titration studies, these structures shed light on the molecular interface between the catalytic subunit and the processivity factor component A20. The interface comprises hydrophobic residues conserved within the Chordopoxvirinae subfamily. Finally, we constructed a HADDOCK model of the VACV A20304-426-E9 complex, which is in excellent accordance with previous experimental data.
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Affiliation(s)
- Beate Bersch
- Institut de Biologie Structurale, Univ. Grenoble Alpes, CNRS, CEA, IBS, F-38000 Grenoble, France.
| | - Nicolas Tarbouriech
- Institut de Biologie Structurale, Univ. Grenoble Alpes, CNRS, CEA, IBS, F-38000 Grenoble, France
| | - Wim P Burmeister
- Institut de Biologie Structurale, Univ. Grenoble Alpes, CNRS, CEA, IBS, F-38000 Grenoble, France
| | - Frédéric Iseni
- Unité de Virologie, Institut de Recherche Biomédicale des Armées, BP73, F-91223 Brétigny-sur-Orge Cedex, France
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19
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Zhang J, Li X, Li X, Shi H, Sun F, Du Y. DMSO/SOCl 2-mediated C(sp 2)-H amination: switchable synthesis of 3-unsubstituted indole and 3-methylthioindole derivatives. Chem Commun (Camb) 2021; 57:460-463. [PMID: 33406208 DOI: 10.1039/d0cc07453e] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The reaction of 2-alkenylanilines with SOCl2 in DMSO was found to selectively afford 3-unsubstituted indoles and 3-methylthioindoles. This switchable approach was found to be temperature-dependent: at room temperature, the reaction afforded 3-unsubstituted indoles through intramolecular cyclization and elimination; while at higher temperature, the reaction gave 3-methylthioindoles via further electrophilic methylthiolation.
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Affiliation(s)
- Jingran Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Xiaoxian Li
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Xuemin Li
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Haofeng Shi
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Fengxia Sun
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Hebei Research Center of Pharmaceutical and Chemical Engineering, Shijiazhuang 050018, China
| | - Yunfei Du
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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20
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Hazarika S, Barman P. Visible‐Light Cercosporin Catalyzed Sulfenylation of Electron‐Rich Compounds with Thiols under Transition‐Metal‐Free Conditions. ChemistrySelect 2020. [DOI: 10.1002/slct.202002512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Sukanya Hazarika
- Department of Chemistry National Institute of Technology Silchar Assam 788010 India
| | - Pranjit Barman
- Department of Chemistry National Institute of Technology Silchar Assam 788010 India
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21
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Xu D, Yang S, Gao A, Yang Z. NaClO2-mediated preparation of pyridine-2-sulfonyl chlorides and synthesis of chiral sulfonamides. J Sulphur Chem 2020. [DOI: 10.1080/17415993.2020.1775834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Dong Xu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, People’s Republic of China
| | - Shiyi Yang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, People’s Republic of China
| | - Aijun Gao
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, People’s Republic of China
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, People’s Republic of China
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22
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Jiang X, Zhao Z, Shen Z, Chen K, Fang L, Yu C. Flavin/I2
-Catalyzed Aerobic Oxidative C-H Sulfenylation of Aryl-Fused Cyclic Amines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xinpeng Jiang
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Zongchen Zhao
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Zhifeng Shen
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Keda Chen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals; Zhejiang University of Technology; Hangzhou P.R. China
| | - Liyun Fang
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Chuanming Yu
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
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23
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Liu C, Peng X, Hu D, Shi F, Huang P, Luo J, Liu Q, Liu L. The direct C3 chalcogenylation of indolines using a graphene-oxide-promoted and visible-light-induced synergistic effect. NEW J CHEM 2020. [DOI: 10.1039/d0nj00747a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green methodology for the construction of carbon–chalcogen (S and Se) bonds via a GO-promoted and metal-free light-induced synergistic effect is demonstrated.
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Affiliation(s)
- Chunping Liu
- Department of Chemistry and Chemical Engineering
- Gannan Normal University
- Ganzhou
- P. R. China
| | - Xiangjun Peng
- School of Pharmaceutical Science
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Dan Hu
- Department of Chemistry and Chemical Engineering
- Gannan Normal University
- Ganzhou
- P. R. China
| | - Feng Shi
- School of Pharmaceutical Science
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Panpan Huang
- Department of Chemistry and Chemical Engineering
- Gannan Normal University
- Ganzhou
- P. R. China
| | - Juanjuan Luo
- School of Pharmaceutical Science
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Qian Liu
- School of Pharmaceutical Science
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Liangxian Liu
- Department of Chemistry and Chemical Engineering
- Gannan Normal University
- Ganzhou
- P. R. China
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24
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Wang W, Zhu F, Yan Z, He M, Lin S. I2O5 promoted iodosulfenylation of indoles under metal-free conditions. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.06.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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25
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Abstract
Palladium/norbornene cooperative catalysis has emerged as a distinct approach to construct polyfunctionalized arenes from readily available starting materials. This Review provides a comprehensive overview of this field, including the early stoichiometric investigations, catalytic reaction developments, as well as the applications in the syntheses of bioactive compounds and polymers. The section of catalytic reactions is divided into two parts according to the reaction initiation mode: Pd(0)-initiated reactions and Pd(II)-initiated reactions.
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Affiliation(s)
- Jianchun Wang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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26
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Hazarika S, Barman P. Ultrasound Assisted Solvent/Metal Free Synthesis of 3‐Sulfenylindoles Employing TBATB‐Grafted MCM‐48 as a suitable Heterogeneous Catalyst. ChemistrySelect 2019. [DOI: 10.1002/slct.201901455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sukanya Hazarika
- Department of ChemistryNational Institute of Technology Silchar 788010, Assam India
| | - Pranjit Barman
- Department of ChemistryNational Institute of Technology Silchar 788010, Assam India
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27
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Targeting uracil-DNA glycosylases for therapeutic outcomes using insights from virus evolution. Future Med Chem 2019; 11:1323-1344. [PMID: 31161802 DOI: 10.4155/fmc-2018-0319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Ung-type uracil-DNA glycosylases are frontline defenders of DNA sequence fidelity in bacteria, plants and animals; Ungs also directly assist both innate and humoral immunity. Critically important in viral pathogenesis, whether acting for or against viral DNA persistence, Ungs also have therapeutic relevance to cancer, microbial and parasitic diseases. Ung catalytic specificity is uniquely conserved, yet selective antiviral drugging of the Ung catalytic pocket is tractable. However, more promising precision therapy approaches present themselves via insights from viral strategies, including sequestration or adaptation of Ung for noncanonical roles. A universal Ung inhibition mechanism, converged upon by unrelated viruses, could also inform design of compounds to inhibit specific distinct Ungs. Extrapolating current developments, the character of such novel chemical entities is proposed.
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28
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Wu Y, Tian B, Witzel S, Jin H, Tian X, Rudolph M, Rominger F, Hashmi ASK. AuBr 3 -Catalyzed Chemoselective Annulation of Isocyanates with 2H-Azirine. Chemistry 2019; 25:4093-4099. [PMID: 30370953 DOI: 10.1002/chem.201804765] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Indexed: 01/19/2023]
Abstract
The chemoselective cyclization of isocyanates with 2H-azirine was achieved with AuBr3 as catalyst. This transfer sets the stage for the synthesis of aromatic oxazole-ureas in a tandem process. The addition of a catalytic amount of phosphite enhances the process enormously. The reaction can also be performed in a one-pot process using benzoyl azide instead of isocyanate under the same conditions. A detailed study on the role of the phosphite that was applied as an additive revealed that only non-coordinated phosphite can reduce gold(III) and that gold(I) coordinated phosphite is not oxidized. Accompanied by the reduction of gold, HBr is generated in situ, which turned out to be the actual promotor in combination with the remaining AuBr3 . The positive effect of acid can be explained by a strong N-Au coordination, which tends to break more easily in the presence of small amount of protic acid in the reaction solution.
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Affiliation(s)
- Yufeng Wu
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Bing Tian
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Sina Witzel
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Hongming Jin
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Xianhai Tian
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.,Chemistry Department, Faculty of Science, King Abdulaziz University (KAU), 21589, Jeddah, Saudi Arabia
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29
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Dutta PK, Chauhan J, Ravva MK, Sen S. Directing-Group-Assisted Manganese-Catalyzed Cyclopropanation of Indoles. Org Lett 2019; 21:2025-2028. [DOI: 10.1021/acs.orglett.9b00150] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pratip K. Dutta
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Dadri, Chithera, Gautam Budh Nagar, UP 201314, India
| | - Jyoti Chauhan
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Dadri, Chithera, Gautam Budh Nagar, UP 201314, India
| | | | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Dadri, Chithera, Gautam Budh Nagar, UP 201314, India
- Department of Chemistry, SRM University-AP, Amaravati, 522502, India
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30
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31
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Equbal D, Singh R, Saima, Lavekar AG, Sinha AK. Synergistic Dual Role of [hmim]Br-ArSO2Cl in Cascade Sulfenylation–Halogenation of Indole: Mechanistic Insight into Regioselective C–S and C–S/C–X (X = Cl and Br) Bond Formation in One Pot. J Org Chem 2019; 84:2660-2675. [DOI: 10.1021/acs.joc.8b03097] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Danish Equbal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031 India
| | - Richa Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031 India
| | - Saima
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031 India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001 India
| | - Aditya G. Lavekar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031 India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001 India
| | - Arun K. Sinha
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031 India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001 India
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32
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Liu R, Li Z, Wang S, Zhou X. Pd(OAc) 2/CuI-Catalyzed Tandem Reaction for Synthesis of Polysubstituted 3-Chalcogenylindoles. CHINESE J ORG CHEM 2019. [DOI: 10.6023/cjoc201904032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Quatrin PM, Dalla Lana DF, Bazana LCG, de Oliveira LFS, Lettieri Teixeira M, Silva EE, Lopes W, Canto RFS, Silveira GP, Fuentefria AM. 3-Selenocyanate-indoles as new agents for the treatment of superficial and mucocutaneous infections. NEW J CHEM 2019. [DOI: 10.1039/c8nj04935a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of resistance to the current antifungal agents is an alarming problem.
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Affiliation(s)
- Priscilla Maciel Quatrin
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Daiane Flores Dalla Lana
- Programa de Pós-Graduação em Ciências Farmacêuticas
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Luana Candice Genz Bazana
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | | | | | - Edilma Elaine Silva
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - William Lopes
- Department of Molecular Biology and Biotechnology
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Rômulo Faria Santos Canto
- Programa de Pós-Graduação em Ciências da Saúde
- Universidade Federal de Ciências da Saúde de Porto Alegre
- Porto Alegre
- Brazil
| | - Gustavo Pozza Silveira
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
- Departamento de Química Orgânica
| | - Alexandre Meneghello Fuentefria
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas
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34
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Nuth M, Guan H, Xiao Y, Kulp JL, Parker MH, Strobel ED, Isaacs SN, Scott RW, Reitz AB, Ricciardi RP. Mutation and structure guided discovery of an antiviral small molecule that mimics an essential C-Terminal tripeptide of the vaccinia D4 processivity factor. Antiviral Res 2018; 162:178-185. [PMID: 30578797 PMCID: PMC10124107 DOI: 10.1016/j.antiviral.2018.12.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/12/2018] [Accepted: 12/17/2018] [Indexed: 12/31/2022]
Abstract
The smallpox virus (variola) remains a bioterrorism threat since a majority of the human population has never been vaccinated. In the event of an outbreak, at least two drugs against different targets of variola are critical to circumvent potential viral mutants that acquire resistance. Vaccinia virus (VACV) is the model virus used in the laboratory for studying smallpox. The VACV processivity factor D4 is an ideal therapeutic target since it is both essential and specific for poxvirus replication. Recently, we identified a tripeptide (Gly-Phe-Ile) motif at the C-terminus of D4 that is conserved among poxviruses and is necessary for maintaining protein function. In the current work, a virtual screening for small molecule mimics of the tripeptide identified a thiophene lead that effectively inhibited VACV, cowpox virus, and rabbitpox virus in cell culture (EC50 = 8.4-19.7 μM) and blocked in vitro processive DNA synthesis (IC50 = 13.4 μM). Compound-binding to D4 was demonstrated through various biophysical methods and a dose-dependent retardation of the proteolysis of D4 proteins. This study highlights an inhibitor design strategy that exploits a susceptible region of the protein and identifies a novel scaffold for a broad-spectrum poxvirus inhibitor.
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Affiliation(s)
- Manunya Nuth
- Department of Microbiology, School of Dental Medicine and the Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Hancheng Guan
- Department of Microbiology, School of Dental Medicine and the Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Yuhong Xiao
- Department of Medicine, Division of Infectious Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - John L Kulp
- Conifer Point Pharmaceuticals, Doylestown, PA, USA
| | | | - Eric D Strobel
- Fox Chase Chemical Diversity Center, Inc., Doylestown, PA, USA
| | - Stuart N Isaacs
- Department of Medicine, Division of Infectious Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Richard W Scott
- Fox Chase Chemical Diversity Center, Inc., Doylestown, PA, USA
| | - Allen B Reitz
- Fox Chase Chemical Diversity Center, Inc., Doylestown, PA, USA
| | - Robert P Ricciardi
- Department of Microbiology, School of Dental Medicine and the Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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35
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Liu C, Fan J, Wu M, Chen J, Zhao Y, Xie M. Metal Free Mono- and 2,3-Bis-sulfenylation of Indoles in Water with Sodium Sulfinates as a Sulfur Source. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800164] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Changqing Liu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials; College of Chemistry and Materials Science, Anhui Normal University, Wuhu; Anhui 241000 China
- Department of Chemistry; Bengbu Medical College; Bengbu Anhui 233030 China
| | - Jian Fan
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials; College of Chemistry and Materials Science, Anhui Normal University, Wuhu; Anhui 241000 China
| | - Manyi Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials; College of Chemistry and Materials Science, Anhui Normal University, Wuhu; Anhui 241000 China
| | - Jiahui Chen
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials; College of Chemistry and Materials Science, Anhui Normal University, Wuhu; Anhui 241000 China
| | - Yiming Zhao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials; College of Chemistry and Materials Science, Anhui Normal University, Wuhu; Anhui 241000 China
| | - Meihua Xie
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials; College of Chemistry and Materials Science, Anhui Normal University, Wuhu; Anhui 241000 China
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36
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Tayu M, Higuchi K, Kawasaki T. Functionalizations of Indoles by Intermolecular Interrupted Pummerer Reaction. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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37
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Luo X, Liu Q, Zhu H, Chen H. Copper-catalysed regioselective sulfenylation of indoles with sodium sulfinates. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180170. [PMID: 29892452 PMCID: PMC5990840 DOI: 10.1098/rsos.180170] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 03/28/2018] [Indexed: 06/08/2023]
Abstract
A copper-catalysed sulfenylation of indoles with sodium sulfinates that affords 3-sulfenylindoles in good-to-excellent yields in N,N-dimethyl formamide (DMF) is described. In the process, DMF serves not only as a solvent but also as a reductant. This transformation is easy to carry out and has mild reaction conditions and good functional group tolerance.
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Affiliation(s)
- Xiaojun Luo
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Shiliugang Road 13th, Guangzhou 510315, People's Republic of China
| | - Qiang Liu
- School of Traditional Chinese Medicine, Southern Medical University, No.1023, South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
| | - Hongxia Zhu
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Shiliugang Road 13th, Guangzhou 510315, People's Republic of China
| | - Huoji Chen
- School of Traditional Chinese Medicine, Southern Medical University, No.1023, South Shatai Road, Baiyun District, Guangzhou 510515, People's Republic of China
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38
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Saima, Equbal D, Lavekar AG, Sinha AK. Cooperative catalysis by bovine serum albumin-iodine towards cascade oxidative coupling-C(sp(2))-H sulfenylation of indoles/hydroxyaryls with thiophenols on water. Org Biomol Chem 2018; 14:6111-8. [PMID: 27251465 DOI: 10.1039/c6ob00930a] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cooperative cascade catalysis by bovine serum albumin (BSA)-iodine allows for the first time the performance of C(sp(2))-H sulfenylation of indole from readily available thiophenol (-SH bond) via in situ generation/cleavage of disulfide (S-S bond) in air under aqueous conditions, whereas BSA or I2 individually do not permit this two step sequence to occur in the same pot towards C-S bond formation. This green cooperative protocol is extendable to sulfenylation of hydroxyaryls (i.e. 2-naphthol or 4-hydroxycoumarin) with diverse thiols (aryl/heteroaryl) without using any toxic metal catalysts, bases or oxidants, thus rendering the process environmentally and economically reliable. Further, the gram scale synthesis of a COX-2 inhibitor (3-(pyridin-2-ylthio)-1H-indole), regioselectivity and recyclability (up to four cycles) are the additional merits of this cooperative cascade bio-chemocatalytic (BSA-I2) protocol. Moreover, HPLC and ESI-MS provide powerful insights into the mechanistic aspects of the above cascade sulfenylation reaction.
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Affiliation(s)
- Saima
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Danish Equbal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
| | - Aditya G Lavekar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
| | - Arun K Sinha
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
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39
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Wegmann M, Henkel M, Bach T. C-H alkylation reactions of indoles mediated by Pd(ii) and norbornene: applications and recent developments. Org Biomol Chem 2018; 16:5376-5385. [PMID: 29993084 DOI: 10.1039/c8ob01025k] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Catellani reaction enables an ortho-C-H activation based on oxidative addition of Pd(0) and an intermediary carbopalladation of norbornene. Among its variants, the recently developed C2-selective alkylation of indoles is particular as it employs Pd(ii) as the source of palladium. This review describes the mechanistic background of this transformation. Applications in total synthesis and in the synthesis of biologically relevant molecules are illustrated and further developments of the method are discussed.
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Affiliation(s)
- Marcus Wegmann
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany.
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40
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Qiao K, Zhang D, Zhang K, Yuan X, Zheng MW, Guo TF, Fang Z, Wan L, Guo K. Iron(ii)-catalyzed C-2 cyanomethylation of indoles and pyrroles via direct oxidative cross-dehydrogenative coupling with acetonitrile derivatives. Org Chem Front 2018. [DOI: 10.1039/c7qo01086a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel and efficient approach for the C(sp2)–H/C(sp3)–H oxidative coupling of indoles and pyrroles with acetonitrile derivatives was reported by using the Fe(ii) complex.
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Affiliation(s)
- Kai Qiao
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Dong Zhang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Kai Zhang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Xin Yuan
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Ming-Wei Zheng
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Tian-Fo Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Li Wan
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
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41
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Šiaučiulis M, Sapmaz S, Pulis AP, Procter DJ. Dual vicinal functionalisation of heterocycles via an interrupted Pummerer coupling/[3,3]-sigmatropic rearrangement cascade. Chem Sci 2017; 9:754-759. [PMID: 29629145 PMCID: PMC5870476 DOI: 10.1039/c7sc04723a] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 11/17/2017] [Indexed: 12/11/2022] Open
Abstract
A dual vicinal functionalisation cascade involving the union of heterocycles and allyl sulfoxides is described. In particular, the approach provides efficient one-step access to biologically relevant and synthetically important C3 thio, C2 carbo substituted indoles. The reaction operates under mild, metal free conditions and without directing groups, via an interrupted Pummerer coupling of activated allyl sulfoxides, generating allyl heteroaryl sulfonium salts that are predisposed to a charge accelerated [3,3]-sigmatropic rearrangement.
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Affiliation(s)
- Mindaugas Šiaučiulis
- School of Chemistry , University of Manchester , Oxford Rd , Manchester , M13 9PL , UK .
| | - Selma Sapmaz
- Lilly Research Laboratories , Eli Lilly and Company Limited , Erl Wood Manor, Sunninghill Road , Windlesham , Surrey GU20 6PH , UK
| | - Alexander P Pulis
- School of Chemistry , University of Manchester , Oxford Rd , Manchester , M13 9PL , UK .
| | - David J Procter
- School of Chemistry , University of Manchester , Oxford Rd , Manchester , M13 9PL , UK .
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42
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Tabarelli G, Dornelles L, Iglesias BA, Gonçalves DF, Terra Stefanello S, Soares FAA, Piccoli BC, D'Avila da Silva F, da Rocha JBT, Schultze E, Bonemann Bender C, Collares T, Kömmling Seixas F, Peterle MM, Braga AL, Rodrigues OED. Synthesis and Antitumoral Lung Carcinoma A549 and Antioxidant Activity Assays Of New Chiral β-Aryl-Chalcogenium Azide Compounds. ChemistrySelect 2017. [DOI: 10.1002/slct.201701107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Greice Tabarelli
- LabSelen-NanoBio - Departamento de Química; Universidade Federal de Santa Maria, RS - CEP; 97105-900 - Brazil
| | - Luciano Dornelles
- LabSelen-NanoBio - Departamento de Química; Universidade Federal de Santa Maria, RS - CEP; 97105-900 - Brazil
| | - Bernardo A. Iglesias
- Departamento de Química; Universidade Federal de Santa Maria, RS - CEP; 97105-900 - Brazil
| | - Débora Farina Gonçalves
- Departamento de Bioquímica e Biologia MolecularProgramas de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica - PPGBTox Programa de Pós-Graduação em Educação em Ciências: Química da Vida e Saúde - PPGECQVS; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; Santa Maria, CEP 97105-900 Brazil
| | - Sílvio Terra Stefanello
- Departamento de Bioquímica e Biologia MolecularProgramas de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica - PPGBTox Programa de Pós-Graduação em Educação em Ciências: Química da Vida e Saúde - PPGECQVS; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; Santa Maria, CEP 97105-900 Brazil
| | - Félix A. A. Soares
- Departamento de Bioquímica e Biologia MolecularProgramas de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica - PPGBTox Programa de Pós-Graduação em Educação em Ciências: Química da Vida e Saúde - PPGECQVS; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; Santa Maria, CEP 97105-900 Brazil
| | - Bruna Candia Piccoli
- Departamento de Bioquímica e Biologia MolecularProgramas de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica - PPGBTox Programa de Pós-Graduação em Educação em Ciências: Química da Vida e Saúde - PPGECQVS; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; Santa Maria, CEP 97105-900 Brazil
| | - Fernanda D'Avila da Silva
- Departamento de Bioquímica e Biologia MolecularProgramas de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica - PPGBTox Programa de Pós-Graduação em Educação em Ciências: Química da Vida e Saúde - PPGECQVS; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; Santa Maria, CEP 97105-900 Brazil
| | - João B. T. da Rocha
- Departamento de Bioquímica e Biologia MolecularProgramas de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica - PPGBTox Programa de Pós-Graduação em Educação em Ciências: Química da Vida e Saúde - PPGECQVS; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; Santa Maria, CEP 97105-900 Brazil
| | - Eduarda Schultze
- Programa de Pós-Graduação em Biotecnologia (PPGB); Grupo de Pesquisa em Oncologia Celular e Molecular; Laboratório de Biotecnologia do Câncer; Biotecnologia/Centro de Desenvolvimento Tecnológico; Universidade Federal de Pelotas; Pelotas, RS Brazil
| | - Camila Bonemann Bender
- Programa de Pós-Graduação em Biotecnologia (PPGB); Grupo de Pesquisa em Oncologia Celular e Molecular; Laboratório de Biotecnologia do Câncer; Biotecnologia/Centro de Desenvolvimento Tecnológico; Universidade Federal de Pelotas; Pelotas, RS Brazil
| | - Tiago Collares
- Programa de Pós-Graduação em Biotecnologia (PPGB); Grupo de Pesquisa em Oncologia Celular e Molecular; Laboratório de Biotecnologia do Câncer; Biotecnologia/Centro de Desenvolvimento Tecnológico; Universidade Federal de Pelotas; Pelotas, RS Brazil
| | - Fabiana Kömmling Seixas
- Programa de Pós-Graduação em Biotecnologia (PPGB); Grupo de Pesquisa em Oncologia Celular e Molecular; Laboratório de Biotecnologia do Câncer; Biotecnologia/Centro de Desenvolvimento Tecnológico; Universidade Federal de Pelotas; Pelotas, RS Brazil
| | - Marcos M. Peterle
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis Brazil
| | - Antônio L. Braga
- Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis Brazil
| | - Oscar E. D. Rodrigues
- LabSelen-NanoBio - Departamento de Química; Universidade Federal de Santa Maria, RS - CEP; 97105-900 - Brazil
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43
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Tayu M, Nomura K, Kawachi K, Higuchi K, Saito N, Kawasaki T. Direct C2-Functionalization of Indoles Triggered by the Generation of Iminium Species from Indole and Sulfonium Salt. Chemistry 2017. [PMID: 28623845 DOI: 10.1002/chem.201702338] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An indole core bearing a functional group on the C2 position is often found as a key structure in biologically active natural products and pharmaceuticals. Here, we report direct C2-functionalization of indoles triggered by the formation of an iminium species generated from indole and a sulfonium reagent. The reaction proceeded under very mild conditions to give the corresponding C2-substituted indole derivatives in good to high yields.
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Affiliation(s)
- Masanori Tayu
- Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Kazuya Nomura
- Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Koki Kawachi
- Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Kazuhiro Higuchi
- Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Nozomi Saito
- Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Tomomi Kawasaki
- Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo, 204-8588, Japan
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44
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Czarnecki MW, Traktman P. The vaccinia virus DNA polymerase and its processivity factor. Virus Res 2017; 234:193-206. [PMID: 28159613 DOI: 10.1016/j.virusres.2017.01.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 01/29/2017] [Indexed: 10/20/2022]
Abstract
Vaccinia virus is the prototypic poxvirus. The 192 kilobase double-stranded DNA viral genome encodes most if not all of the viral replication machinery. The vaccinia virus DNA polymerase is encoded by the E9L gene. Sequence analysis indicates that E9 is a member of the B family of replicative polymerases. The enzyme has both polymerase and 3'-5' exonuclease activities, both of which are essential to support viral replication. Genetic analysis of E9 has identified residues and motifs whose alteration can confer temperature-sensitivity, drug resistance (phosphonoacetic acid, aphidicolin, cytosine arabinsode, cidofovir) or altered fidelity. The polymerase is involved both in DNA replication and in recombination. Although inherently distributive, E9 gains processivity by interacting in a 1:1 stoichiometry with a heterodimer of the A20 and D4 proteins. A20 binds to both E9 and D4 and serves as a bridge within the holoenzyme. The A20/D4 heterodimer has been purified and can confer processivity on purified E9. The interaction of A20 with D4 is mediated by the N'-terminus of A20. The D4 protein is an enzymatically active uracil DNA glycosylase. The DNA-scanning activity of D4 is proposed to keep the holoenzyme tethered to the DNA template but allow polymerase translocation. The crystal structure of D4, alone and in complex with A201-50 and/or DNA has been solved. Screens for low molecular weight compounds that interrupt the A201-50/D4 interface have yielded hits that disrupt processive DNA synthesis in vitro and/or inhibit plaque formation. The observation that an active DNA repair enzyme is an integral part of the holoenzyme suggests that DNA replication and repair may be coupled.
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Affiliation(s)
- Maciej W Czarnecki
- Departments of Biochemistry & Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, United States; Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, WI 53226, United States
| | - Paula Traktman
- Departments of Biochemistry & Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, United States; Departments of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425, United States; Departments of the Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, United States; Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, WI 53226, United States.
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45
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Nuth M, Guan H, Ricciardi RP. A Conserved Tripeptide Sequence at the C Terminus of the Poxvirus DNA Processivity Factor D4 Is Essential for Protein Integrity and Function. J Biol Chem 2016; 291:27087-27097. [PMID: 27836975 DOI: 10.1074/jbc.m116.761908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/11/2016] [Indexed: 12/27/2022] Open
Abstract
Vaccinia virus (VACV) is a poxvirus, and the VACV D4 protein serves both as a uracil-DNA glycosylase and as an essential component required for processive DNA synthesis. The VACV A20 protein has no known catalytic function itself but associates with D4 to form the D4-A20 heterodimer that functions as the poxvirus DNA processivity factor. The heterodimer enables the DNA polymerase to efficiently synthesize extended strands of DNA. Upon characterizing the interaction between D4 and A20, we observed that the C terminus of D4 is susceptible to perturbation. Further analysis demonstrated that a conserved hexapeptide stretch at the extreme C terminus of D4 is essential for maintaining protein integrity, as assessed by its requirement for the production of soluble recombinant protein that is functional in processive DNA synthesis. From the known crystal structures of D4, the C-terminal hexapeptide is shown to make intramolecular contact with residues spanning the inner core of the protein. Our mutational analysis revealed that a tripeptide motif (215GFI217) within the hexapeptide comprises apparent residues necessary for the contact. Prediction of protein disorder identified the hexapeptide and several regions upstream of Gly215 that comprise residues of the interface surfaces of the D4-A20 heterodimer. Our study suggests that 215GFI217 anchors these potentially dynamic upstream regions of the protein to maintain protein integrity. Unlike uracil-DNA glycosylases from diverse sources, where the C termini are disordered and do not form comparable intramolecular contacts, this feature may be unique to orthopoxviruses.
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Affiliation(s)
- Manunya Nuth
- From the Department of Microbiology, School of Dental Medicine and
| | - Hancheng Guan
- From the Department of Microbiology, School of Dental Medicine and
| | - Robert P Ricciardi
- From the Department of Microbiology, School of Dental Medicine and .,the Abramson Cancer Center, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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46
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Schormann N, Zhukovskaya N, Bedwell G, Nuth M, Gillilan R, Prevelige PE, Ricciardi RP, Banerjee S, Chattopadhyay D. Poxvirus uracil-DNA glycosylase-An unusual member of the family I uracil-DNA glycosylases. Protein Sci 2016; 25:2113-2131. [PMID: 27684934 DOI: 10.1002/pro.3058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/26/2016] [Accepted: 09/27/2016] [Indexed: 11/07/2022]
Abstract
Uracil-DNA glycosylases are ubiquitous enzymes, which play a key role repairing damages in DNA and in maintaining genomic integrity by catalyzing the first step in the base excision repair pathway. Within the superfamily of uracil-DNA glycosylases family I enzymes or UNGs are specific for recognizing and removing uracil from DNA. These enzymes feature conserved structural folds, active site residues and use common motifs for DNA binding, uracil recognition and catalysis. Within this family the enzymes of poxviruses are unique and most remarkable in terms of amino acid sequences, characteristic motifs and more importantly for their novel non-enzymatic function in DNA replication. UNG of vaccinia virus, also known as D4, is the most extensively characterized UNG of the poxvirus family. D4 forms an unusual heterodimeric processivity factor by attaching to a poxvirus-specific protein A20, which also binds to the DNA polymerase E9 and recruits other proteins necessary for replication. D4 is thus integrated in the DNA polymerase complex, and its DNA-binding and DNA scanning abilities couple DNA processivity and DNA base excision repair at the replication fork. The adaptations necessary for taking on the new function are reflected in the amino acid sequence and the three-dimensional structure of D4. An overview of the current state of the knowledge on the structure-function relationship of D4 is provided here.
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Affiliation(s)
- Norbert Schormann
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, 35294
| | - Natalia Zhukovskaya
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, 19104
| | - Gregory Bedwell
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama, 35294
| | - Manunya Nuth
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, 19104
| | - Richard Gillilan
- MacCHESS (Macromolecular Diffraction Facility at CHESS) Cornell University, Ithaca, New York, 14853
| | - Peter E Prevelige
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama, 35294
| | - Robert P Ricciardi
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, 19104.,Abramson Cancer Center, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, 19104
| | - Surajit Banerjee
- Department of Chemistry and Chemical Biology, Cornell University, and NE-CAT, Argonne, Illinois, 60439
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47
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Yang Y, Li W, Ying B, Liao H, Shen C, Zhang P. Catalyst-Triggered Highly Selective C−S and C−Se Bond Formation by C−H Activation. ChemCatChem 2016. [DOI: 10.1002/cctc.201600589] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yong Yang
- College of Material, Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou 310036 P.R. China
| | - Wanmei Li
- College of Material, Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou 310036 P.R. China
| | - Beibei Ying
- College of Material, Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou 310036 P.R. China
| | - Hanxiao Liao
- College of Material, Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou 310036 P.R. China
| | - Chao Shen
- College of Material, Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou 310036 P.R. China
| | - Pengfei Zhang
- College of Material, Chemistry and Chemical Engineering; Hangzhou Normal University; Hangzhou 310036 P.R. China
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48
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Zhang H, Bao X, Song Y, Qu J, Wang B. Iodine-catalysed versatile sulfenylation of indoles with thiophenols: controllable synthesis of mono- and bis-arylthioindoles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.09.070] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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49
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Ferreira NL, Azeredo JB, Fiorentin BL, Braga AL. Synthesis of 3-Selenylindoles under Ecofriendly Conditions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500514] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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50
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Iagafarova IE, Vorobyeva DV, Peregudov AS, Osipov SN. CF3-Carbenoid C-H Functionalization of (Hetero)arenes under Chelation-Controlled RhIIICatalysis. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500545] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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