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He Y, Sun B, Lu X, Zhou Y, Zhang FL. Iridium-Catalyzed Direct Ortho-C-H Amidation of α-Ketoesters with Sulfonyl Azides Using a Transient Directing Group Strategy. J Org Chem 2023; 88:4345-4351. [PMID: 36898142 DOI: 10.1021/acs.joc.2c02944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Direct C-H amidation of α-ketoesters was accomplished using various organic azides as the amino source through the combination of transient directing group strategy and iridium catalysis. Excellent functional group tolerance and wide substrate scope were explored under simple and mild conditions. Importantly, it was found that the steric hindrance of the ester moiety played a pivotal role for the reaction efficacy. In addition, the reaction could be enlarged to gram scale, and several useful heterocycles were readily constructed via one-step late-stage derivatization.
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Affiliation(s)
- Yinlong He
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Bing Sun
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Xuelian Lu
- Shenzhen Research Institute, Wuhan University of Technology, Shenzhen, Guangdong 518057, China
| | - Yirong Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Fang-Lin Zhang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China.,Shenzhen Research Institute, Wuhan University of Technology, Shenzhen, Guangdong 518057, China
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Liu Q, Yong JY, Zhang J, Ban T, Li XQ. C-H acylation of aniline derivatives with α-oxocarboxylic acids using ruthenium catalyst. Org Biomol Chem 2022; 20:6890-6896. [PMID: 35972339 DOI: 10.1039/d2ob01212j] [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
An efficient and convenient synthetic strategy for ruthenium(II)-catalyzed ortho-acylation of N-(2-pyridyl)-anilines using α-oxycarboxylic acids as acyl sources is described. The procedure can smoothly proceed under mild conditions, showing good functional group tolerance. Valuable ortho-acylated aniline products have been obtained with moderate to good yields. Furthermore, the reaction could be easily scaled up to the gram scale.
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Affiliation(s)
- Qiong Liu
- School of Chemical and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Jia-Yuan Yong
- School of Chemical and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Jing Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P. R. China
| | - Tao Ban
- School of Chemical and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Xu-Qin Li
- School of Chemical and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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Yang F, Xu S, Fan H, Zhao X, Zhang X. One‐Pot Synthesis of 2‐Aminobenzophenones from 2‐Alkynyl Arylazides Catalyzed by Pd and Cu Precursors. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fan Yang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Shijie Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Hui Fan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xuechun Zhao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xiaoxiang Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
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Hallberg M. Neuropeptides: metabolism to bioactive fragments and the pharmacology of their receptors. Med Res Rev 2015; 35:464-519. [PMID: 24894913 DOI: 10.1002/med.21323] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
The proteolytic processing of neuropeptides has an important regulatory function and the peptide fragments resulting from the enzymatic degradation often exert essential physiological roles. The proteolytic processing generates, not only biologically inactive fragments, but also bioactive fragments that modulate or even counteract the response of their parent peptides. Frequently, these peptide fragments interact with receptors that are not recognized by the parent peptides. This review discusses tachykinins, opioid peptides, angiotensins, bradykinins, and neuropeptide Y that are present in the central nervous system and their processing to bioactive degradation products. These well-known neuropeptide systems have been selected since they provide illustrative examples that proteolytic degradation of parent peptides can lead to bioactive metabolites with different biological activities as compared to their parent peptides. For example, substance P, dynorphin A, angiotensin I and II, bradykinin, and neuropeptide Y are all degraded to bioactive fragments with pharmacological profiles that differ considerably from those of the parent peptides. The review discusses a selection of the large number of drug-like molecules that act as agonists or antagonists at receptors of neuropeptides. It focuses in particular on the efforts to identify selective drug-like agonists and antagonists mimicking the effects of the endogenous peptide fragments formed. As exemplified in this review, many common neuropeptides are degraded to a variety of smaller fragments but many of the fragments generated have not yet been examined in detail with regard to their potential biological activities. Since these bioactive fragments contain a small number of amino acid residues, they provide an ideal starting point for the development of drug-like substances with ability to mimic the effects of the degradation products. Thus, these substances could provide a rich source of new pharmaceuticals. However, as discussed herein relatively few examples have so far been disclosed of successful attempts to create bioavailable, drug-like agonists or antagonists, starting from the structure of endogenous peptide fragments and applying procedures relying on stepwise manipulations and simplifications of the peptide structures.
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Affiliation(s)
- Mathias Hallberg
- Beijer Laboratory, Department of Pharmaceutical Biosciences, Division of Biological Research on Drug Dependence, Uppsala University, Biomedical Center, Uppsala, Sweden
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Chen J, Ye L, Su W. Palladium-catalyzed direct addition of arylboronic acids to 2-aminobenzonitrile derivatives: synthesis, biological evaluation and in silico analysis of 2-aminobenzophenones, 7-benzoyl-2-oxoindolines, and 7-benzoylindoles. Org Biomol Chem 2014; 12:8204-11. [PMID: 25198908 DOI: 10.1039/c4ob00978a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A palladium-catalyzed direct addition of arylboronic acids to unprotected 2-aminobenzonitriles has been developed, leading to a wide range of 2-aminobenzophenones with moderate to excellent yields. The transformation has broad scope and high functional group tolerance. Moreover, 2-oxoindoline-7-carbonitrile and indole-7-carbonitrile were applicable to this process for the construction of 7-benzoyl-2-oxoindolines and 7-benzoylindoles, respectively. Among the compounds examined, compound 4e possessed the most potent anticancer activity against H446 and HGC-27 in vitro, with IC50 values of 0.02 μmol L(-1) and 0.09 μmol L(-1), respectively, while compound 4a showed the best potent anticancer activity against SGC-7901 with an IC50 value of 0.01 μmol L(-1). Furthermore, we also performed in silico molecular docking calculations to investigate the interaction mode and binding affinity between the examined compounds and their tubulin target.
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Affiliation(s)
- Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
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Hicken EJ, Marmsater FP, Munson MC, Schlachter ST, Robinson JE, Allen S, Burgess LE, DeLisle RK, Rizzi JP, Topalov GT, Zhao Q, Hicks JM, Kallan NC, Tarlton E, Allen A, Callejo M, Cox A, Rana S, Klopfenstein N, Woessner R, Lyssikatos JP. Discovery of a Novel Class of Imidazo[1,2-a]Pyridines with Potent PDGFR Activity and Oral Bioavailability. ACS Med Chem Lett 2014; 5:78-83. [PMID: 24900776 DOI: 10.1021/ml4003953] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 11/12/2013] [Indexed: 12/20/2022] Open
Abstract
The in silico construction of a PDGFRβ kinase homology model and ensuing medicinal chemistry guided by molecular modeling, led to the identification of potent, small molecule inhibitors of PDGFR. Subsequent exploration of structure-activity relationships (SAR) led to the incorporation of a constrained secondary amine to enhance selectivity. Further refinements led to the integration of a fluorine substituted piperidine, which resulted in significant reduction of P-glycoprotein (Pgp) mediated efflux and improved bioavailability. Compound 28 displayed oral exposure in rodents and had a pronounced effect in a pharmacokinetic-pharmacodynamic (PKPD) assay.
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Affiliation(s)
- Erik J. Hicken
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Fred P. Marmsater
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Mark C. Munson
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Stephen T. Schlachter
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - John E. Robinson
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Shelley Allen
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Laurence E. Burgess
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Robert Kirk DeLisle
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - James P. Rizzi
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - George T. Topalov
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Qian Zhao
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Julie M. Hicks
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Nicholas C. Kallan
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Eugene Tarlton
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Andrew Allen
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Michele Callejo
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - April Cox
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Sumeet Rana
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Nathalie Klopfenstein
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Richard Woessner
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
| | - Joseph P. Lyssikatos
- Department of Drug Discovery, Array BioPharma, 3200 Walnut Street, Boulder, Colorado 80301, United States
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Barth M, Bondoux M, Luccarini JM, Peyrou V, Dodey P, Pruneau D, Massardier C, Paquet JL. From bradykinin B2 receptor antagonists to orally active and selective bradykinin B1 receptor antagonists. J Med Chem 2012; 55:2574-84. [PMID: 22369198 DOI: 10.1021/jm2016057] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The bradykinin (BK) B1 receptor is an attractive target for the treatment of chronic pain and inflammation. Starting from a dual B1 and B2 antagonist, novel antagonists were designed that display low-nanomolar affinity for human B1 receptor and selectivity over B2. Initially, potent imidazoline derivatives were studied, but these compounds suffered from low bioavailability. This issue could be overcome by the use of less basic amino derivatives leading to orally active compounds.
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Affiliation(s)
- Martine Barth
- Department of Chemical Design and Synthesis, Clinical Candidate Selection, Laboratoires Fournier, 50 Rue de Dijon, 21121 Daix, France.
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