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Abdelrahman KS, Hassan HA, Abdel-Aziz SA, Marzouk AA, Shams R, Osawa K, Abdel-Aziz M, Konno H. Development and Assessment of 1,5-Diarylpyrazole/Oxime Hybrids Targeting EGFR and JNK-2 as Antiproliferative Agents: A Comprehensive Study through Synthesis, Molecular Docking, and Evaluation. Molecules 2023; 28:6521. [PMID: 37764297 PMCID: PMC10537604 DOI: 10.3390/molecules28186521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
New 1,5-diarylpyrazole oxime hybrid derivatives (scaffolds A and B) were designed, synthesized, and then their purity was verified using a variety of spectroscopic methods. A panel of five cancer cell lines known to express EGFR and JNK-2, including human colorectal adenocarcinoma cell line DLD-1, human cervical cancer cell line Hela, human leukemia cell line K562, human pancreatic cell line SUIT-2, and human hepatocellular carcinoma cell line HepG2, were used to biologically evaluate for their in vitro cytotoxicity for all the synthesized compounds 7a-j, 8a-j, 9a-c, and 10a-c. The oxime containing compounds 8a-j and 10a-c were more active as antiproliferative agents than their non-oxime congeners 7a-j and 9a-c. Compounds 8d, 8g, 8i, and 10c inhibited EGFR with IC50 values ranging from 8 to 21 µM when compared with sorafenib. Compound 8i inhibited JNK-2 as effectively as sorafenib, with an IC50 of 1.0 µM. Furthermore, compound 8g showed cell cycle arrest at the G2/M phase in the cell cycle analysis of the Hela cell line, whereas compound 8i showed combined S phase and G2 phase arrest. According to docking studies, oxime hybrid compounds 8d, 8g, 8i, and 10c exhibited binding free energies ranging from -12.98 to 32.30 kcal/mol at the EGFR binding site whereas compounds 8d and 8i had binding free energies ranging from -9.16 to -12.00 kcal/mol at the JNK-2 binding site.
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Affiliation(s)
- Kamal S. Abdelrahman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt; (S.A.A.-A.); (A.A.M.)
| | - Heba A. Hassan
- Department of Medicinal Chemistry Faculty of Pharmacy, Minia University, Minia 61519, Egypt; (H.A.H.); (M.A.-A.)
| | - Salah A. Abdel-Aziz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt; (S.A.A.-A.); (A.A.M.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, Minia 61768, Egypt
| | - Adel A. Marzouk
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt; (S.A.A.-A.); (A.A.M.)
- National Center for Natural Products Research, School of Pharmacy, University of Missippi, Oxford, MS 38677, USA
| | - Raef Shams
- Emergent Bioengineering Materials Research Team, RIKEN Centre for Emergent Matter Science, RIKEN, Wako 351-0198, Saitama, Japan;
| | - Keima Osawa
- Graduate School of Science and Engineering, Yamagata University, Yonezawa 992-8510, Yamagata, Japan;
| | - Mohamed Abdel-Aziz
- Department of Medicinal Chemistry Faculty of Pharmacy, Minia University, Minia 61519, Egypt; (H.A.H.); (M.A.-A.)
| | - Hiroyuki Konno
- Graduate School of Science and Engineering, Yamagata University, Yonezawa 992-8510, Yamagata, Japan;
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Tan X, Massignan L, Hou X, Frey J, Oliveira JCA, Hussain MN, Ackermann L. Rhodaelektrokatalysierte bimetallische C‐H‐Oxygenierung durch schwache
O
‐Koordination. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xuefeng Tan
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Leonardo Massignan
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Xiaoyan Hou
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Johanna Frey
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - João C. A. Oliveira
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Masoom Nasiha Hussain
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
- Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
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3
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Tan X, Massignan L, Hou X, Frey J, Oliveira JCA, Hussain MN, Ackermann L. Rhoda-Electrocatalyzed Bimetallic C-H Oxygenation by Weak O-Coordination. Angew Chem Int Ed Engl 2021; 60:13264-13270. [PMID: 33651910 PMCID: PMC8252749 DOI: 10.1002/anie.202017359] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/28/2021] [Indexed: 12/20/2022]
Abstract
Rhodium‐electrocatalyzed arene C−H oxygenation by weakly O‐coordinating amides and ketones have been established by bimetallic electrocatalysis. Likewise, diverse dihydrooxazinones were selectively accessed by the judicious choice of current, enabling twofold C−H functionalization. Detailed mechanistic studies by experiment, mass spectroscopy and cyclovoltammetric analysis provided support for an unprecedented electrooxidation‐induced C−H activation by a bimetallic rhodium catalysis manifold.
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Affiliation(s)
- Xuefeng Tan
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Leonardo Massignan
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Xiaoyan Hou
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Johanna Frey
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - João C A Oliveira
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Masoom Nasiha Hussain
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany.,Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
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4
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Mogensen SB, Taylor MK, Lee JW. Homocoupling Reactions of Azoles and Their Applications in Coordination Chemistry. Molecules 2020; 25:E5950. [PMID: 33334079 DOI: 10.3390/molecules25245950] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/10/2020] [Accepted: 12/12/2020] [Indexed: 12/14/2022] Open
Abstract
Pyrazole, a member of the structural class of azoles, exhibits molecular properties of interest in pharmaceuticals and materials chemistry, owing to the two adjacent nitrogen atoms in the five-membered ring system. The weakly basic nitrogen atoms of deprotonated pyrazoles have been applied in coordination chemistry, particularly to access coordination polymers and metal-organic frameworks, and homocoupling reactions can in principle provide facile access to bipyrazole ligands. In this context, we summarize recent advances in homocoupling reactions of pyrazoles and other types of azoles (imidazoles, triazoles and tetrazoles) to highlight the utility of homocoupling reactions in synthesizing symmetric bi-heteroaryl systems compared with traditional synthesis. Metal-free reactions and transition-metal catalyzed homocoupling reactions are discussed with reaction mechanisms in detail.
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6
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Affiliation(s)
- Zafar Iqbal
- National Institute of Technology Uttarakhand Srinagar Garhwal Uttarakhand 246174 India
| | - Asha Joshi
- National Institute of Technology Uttarakhand Srinagar Garhwal Uttarakhand 246174 India
| | - Saroj Ranjan De
- National Institute of Technology Uttarakhand Srinagar Garhwal Uttarakhand 246174 India
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Saitou T, Jin Y, Isobe K, Suga T, Takaya J, Iwasawa N. Rh‐Catalyzed Direct Carboxylation of Alkenyl C−H Bonds of Alkenylpyrazoles. Chem Asian J 2020; 15:1941-1944. [DOI: 10.1002/asia.202000476] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/14/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Takanobu Saitou
- Department of ChemistryTokyo Institute of Technology 2-12-1, O-Okayama Meguro-ku Tokyo 152-8551 Japan
| | - Yushu Jin
- Department of ChemistryTokyo Institute of Technology 2-12-1, O-Okayama Meguro-ku Tokyo 152-8551 Japan
| | - Kotaro Isobe
- Department of ChemistryTokyo Institute of Technology 2-12-1, O-Okayama Meguro-ku Tokyo 152-8551 Japan
| | - Takuya Suga
- Department of ChemistryTokyo Institute of Technology 2-12-1, O-Okayama Meguro-ku Tokyo 152-8551 Japan
| | - Jun Takaya
- Department of ChemistryTokyo Institute of Technology 2-12-1, O-Okayama Meguro-ku Tokyo 152-8551 Japan
| | - Nobuharu Iwasawa
- Department of ChemistryTokyo Institute of Technology 2-12-1, O-Okayama Meguro-ku Tokyo 152-8551 Japan
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Yun YL, Yang J, Miao YH, Sun J, Wang XJ. Recent advances in Palladium(II)-catalyzed activation of aromatic ring C–H bonds. Journal of Saudi Chemical Society 2020. [DOI: 10.1016/j.jscs.2020.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Saha D, Das P, Biswas P, Guin J. Synthesis of Phenolic Compounds via Palladium Catalyzed C−H Functionalization of Arenes. Chem Asian J 2019; 14:4534-4548. [DOI: 10.1002/asia.201901073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/31/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Debajyoti Saha
- Department of ChemistryKrishnagar Govt. College Krishnagar Nadia 741101 India
| | - Prasenjit Das
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Promita Biswas
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Joyram Guin
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
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Andavar S, Vaithilingam M, Selvaraj D, Kumaran AA, Devanathan K. Design, Synthesis and Evaluation of Novel Substituted (5-methyl-1H-pyrazol-3-yl)- 1,3,4-oxadiazole as Potent Androgen Receptor Antagonist. Anticancer Agents Med Chem 2019; 20:84-93. [PMID: 31755396 DOI: 10.2174/1871520619666191121095720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 10/01/2019] [Accepted: 10/02/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Androgen Receptor (AR) is one of the highly explored targets for the treatment of prostate cancer. The emergence of point mutation in the Ligand Binding Domain (LBD) of AR has resulted in the development of resistance against AR antagonist. The point mutation T877A, W741L and F876L confer resistance to flutamide, bicalutamide and enzalutamide respectively. There is no AR antagonist in the present clinical set up without resistance. Hence, our aim in this study is to design a novel molecule to overcome the resistance caused by point mutation. METHODS Here, we developed novel AR antagonist bearing (5-methyl-1H-pyrazol-3-yl)-1, 3,4-oxadiazole core by rational drug design. The test molecules 8a-h were synthesized from the corresponding dihydrazide compounds 7a-h on treatment with phosphorous oxychloride on reflux conditions. The structure of the molecules was confirmed from spectral data such as IR, 1H-NMR, HRMS and 13C-NMR. The synthesized compounds were screened for cytotoxicity in prostate cancer cell lines LNCaP-FGC and PC3. The confirmation of AR mediated activity of the test compounds was confirmed by gene expression study. The interaction of the best active ligands with mutant AR was predicted and drug design was rationalized through docking studies. RESULTS The test compounds 8a-h were synthesized and the structures were conformed using suitable techniques like IR, 1H-NMR, HRMS and 13C-NMR. Among the tested compounds, 8b and 8d showed potent antiproliferative activity against mutant AR cell lines. Further, these compounds significantly decreased the gene expression of prostate cancer biomarkers. CONCLUSION In this study, we have identified a potential hit molecule for AR antagonism that could be further developed to obtain a potent clinical candidate.
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Affiliation(s)
- Sasikumar Andavar
- Anthem Biosciences Pvt. Ltd., #49, Bommasandra Industrial Area, Bommasandra, Bangalore 560 099, Karnataka, India
| | - Mohanasrinivasan Vaithilingam
- Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamilnadu 632014, India
| | - Divakar Selvaraj
- Department of Pharmacology, JSS College of Pharmacy (A Constituent College of JSS Academy of Higher Education and Research), Ooty, Tamilnadu 643 001, India
| | - Ajeeshkumar A Kumaran
- Anthem Biosciences Pvt. Ltd., #49, Bommasandra Industrial Area, Bommasandra, Bangalore 560 099, Karnataka, India
| | - Krishnaswamy Devanathan
- Anthem Biosciences Pvt. Ltd., #49, Bommasandra Industrial Area, Bommasandra, Bangalore 560 099, Karnataka, India
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11
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Zhu JN, Wang WK, Zheng J, Lin HP, Deng YX, Zhao SY. Iodine-Catalyzed Regioselective Oxidative Cyclization of Aldehyde Hydrazones with Electron-Deficient Olefins for the Synthesis of Mefenpyr-Diethyl. J Org Chem 2019; 84:11032-11041. [PMID: 31333030 DOI: 10.1021/acs.joc.9b01499] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A regioselective synthesis of polysubstituted dihydropyrazoles and pyrazoles through an iodine-catalyzed oxidative cyclization strategy of aldehyde hydrazones with electron-deficient olefins is described. The protocol adopts very mild reaction conditions and provides desirable yields. The reaction is supposed to proceed via a cascade C-H functionalization, C-N bond formation, and oxidation sequential processes. The overall simplicity and regioselectivity of the catalytic system make this approach a valuable and step-economical tool to construct a C-C bond for the synthesis of Mefenpyr-Diethyl.
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Affiliation(s)
- Jia-Nan Zhu
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Wen-Kang Wang
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Jian Zheng
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Hao-Peng Lin
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Yun-Xia Deng
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Sheng-Yin Zhao
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
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12
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Affiliation(s)
- Shanshan Gao
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Xing Xu
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Hao Tang
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Jia‐Qiang Wu
- School of Biotechnology and Health SciencesWuyi University, Jiangmen, P. R. China 529020
| | - Junfei Luo
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
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13
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Chen C, Pan Y, Zhao H, Xu X, Luo Z, Cao L, Xi S, Li H, Xu L. Ruthenium(II)-Catalyzed Regioselective C-8 Hydroxylation of 1,2,3,4-Tetrahydroquinolines. Org Lett 2018; 20:6799-6803. [PMID: 30351962 DOI: 10.1021/acs.orglett.8b02926] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ru(II)-catalyzed chelation-assisted highly regioselective C8-hydroxylation of 1,2,3,4-tretrahydroquinolines has been developed. Various 1,2,3,4-tetrahydroquinolines underwent smooth C8-H hydroxylation with cheap and safe K2S2O8 as the oxidant and oxygen source to furnish the corresponding products in good to excellent yields with high tolerance of the functional groups. The choice of a readily installable and removable N-pyrimidyl directing group is the key to catalysis. Mechanistic studies suggest the involvement of a six-membered ruthenacycle intermediate in the catalytic cycle. The method can also be extended to the direct hydroxylation of other (hetero)arene C-H bonds.
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Affiliation(s)
- Changjun Chen
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Yixiao Pan
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Haoqiang Zhao
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Xin Xu
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Zhenli Luo
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Lei Cao
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Siqi Xi
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Huanrong Li
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Lijin Xu
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
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Affiliation(s)
- Sudip Mandal
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Tishyasoumya Bera
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Gurudutt Dubey
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Jaideep Saha
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Joydev K. Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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Guo Y, Yu KK, Xing LH, Liu HW, Wang W, Ji YF. Palladium-Catalyzed Divergent Regioselective Homocoupling and Hydroxylation of 3-Arylbenzo[d]isoxazoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600853] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ying Guo
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Kun-Kun Yu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Li-Hao Xing
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Hong-Wei Liu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Wei Wang
- Department of Chemistry & Chemical Biology; University of New Mexico; MSC03 2060 Albuquerque NM 87131-0001 USA
| | - Ya-Fei Ji
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
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Vahabi AH, Alizadeh A, Khavasi HR, Bazgir A. Palladium-catalyzed, unsymmetrical homocoupling of thiophenes via carbon–sulfur bond activation: a new avenue to homocoupling reactions. Org Biomol Chem 2017; 15:7830-7840. [DOI: 10.1039/c7ob01923h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Introduction of an unprecedented pattern of reactivity, namely the C–N unsymmetrical homocoupling by joining the electrophilic and nucleophilic motifs of the substrate through transition-metal catalysis.
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Affiliation(s)
| | | | | | - Ayoob Bazgir
- Department of Chemistry
- Shahid Beheshti University
- Tehran
- Iran
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Ding J, Guo Y, Shao LY, Zhao FY, Liao DH, Liu HW, Ji YF. Palladium-catalyzed multi-acetoxylation of 1,3-disubstituted 1H-pyrazole-5-carboxylates via direct C(sp2)H or C(sp3)H bond activation. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Kolle S, Batra S. Pd(OAc)2-catalysed regioselective alkoxylation of aryl (β-carbolin-1-yl)methanones via β-carboline directed ortho-C(sp(2))-H activation of an aryl ring. Org Biomol Chem 2016; 13:10376-85. [PMID: 26324764 DOI: 10.1039/c5ob01500f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis of (2-alkoxyphenyl)(9H-pyrido[3,4-b]indol-1-yl)methanone via Pd(OAc)2-catalyzed regioselective alkoxylation of aryl (β-carbolin-1-yl) methanones employing β-carboline directed ortho-C(sp(2))-H activation of an aryl ring under oxidative conditions is described.
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Affiliation(s)
- Shivalinga Kolle
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow-226031, UP, India.
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Le J, Gao Y, Ding Y, Jiang C. Cu-mediated C2-dehydrogenative homocoupling of indoles via C–H activation assisted by a removable N-pyrimidyl group. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Fan X, Guo Y, Li Y, Yu K, Liu H, Liao D, Ji Y. Pd‐Catalyzed Late‐Stage Monoacetoxylation and Monoiodination of 4‐Alkyl‐1,5‐diaryl‐1
H
‐pyrazole‐3‐carboxylates via Direct Csp
2
−H Bond Activation. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Xue‐Min Fan
- School of PharmacyEast China University of Science & Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Ying Guo
- School of PharmacyEast China University of Science & Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Yu‐Dan Li
- School of PharmacyEast China University of Science & Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Kun‐Kun Yu
- School of PharmacyEast China University of Science & Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Hong‐Wei Liu
- School of PharmacyEast China University of Science & Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Dao‐Hua Liao
- School of PharmacyEast China University of Science & Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Ya‐Fei Ji
- School of PharmacyEast China University of Science & Technology 130 Meilong Road Shanghai 200237 P. R. China
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Yang D, Sun P, Wei W, Meng L, He L, Fang B, Jiang W, Wang H. Metal-free iodine-catalyzed direct cross-dehydrogenative coupling (CDC) between pyrazoles and thiols. Org Chem Front 2016. [DOI: 10.1039/c6qo00407e] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green and efficient iodine-catalyzed cross-dehydrogenative C–S coupling method for the synthesis of C-4 sulfenylated pyrazoles has been initially developed under metal-free conditions.
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Affiliation(s)
- Daoshan Yang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Pengfei Sun
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Wei Wei
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Lingduan Meng
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Lingchao He
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Baokai Fang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Wei Jiang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Hua Wang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
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