1
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Takao K, Kubota Y, Kurosaki K, Kamauchi H, Uesawa Y, Sugita Y. Synthesis and Biological Evaluation of 2-Azolylmethylene-3-(2H)-benzofuranone Derivatives as Potent Monoamine Oxidases Inhibitors. Chem Pharm Bull (Tokyo) 2024; 72:109-120. [PMID: 38267058 DOI: 10.1248/cpb.c23-00763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
A series of 2-azolylmethylene-3-(2H)-benzofuranone derivatives, 2-indolylmethylene-3-(2H)-benzofuranone and 2-pyrrolylmethylene-3-(2H)-benzofuranone derivatives, were synthesized, and their monoamine oxidase (MAO) A and B inhibitory activities were evaluated. Compounds 1b, 3b, 6b, 7b, and 10b showed strong inhibitory activity against MAO-A, and compound 3b showed the highest potency and selectivity, with an IC50 value of 21 nM and a MAO-A selectivity index of 48. Compounds 3c, 4c, 9a, 9c, 10c, 11a, and 11c showed strong inhibitory activity against MAO-B, and compound 4c showed the highest potency and selectivity, with an IC50 value of 16 nM and a MAO-B selectivity index of >1100. Further analysis of these compounds indicated that compound 3b for MAO-A and compound 4c for MAO-B were competitive inhibitors, with Ki values of 10 and 6.1 nM, respectively. Furthermore, computational analyses, such as quantitative structure-activity relationship (QSAR) analysis of the 2-azolylmethylene-3-(2H)-benzofuranone derivatives conducting their pIC50 values with the Molecular Operating Environment (MOE) and Mordred, and molecular docking analysis using MOE-Dock supported that the 2-azolylmethylene-3-(2H)-benzofuranone derivatives are a privileged scaffold for the design and development of novel MAO inhibitors.
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Affiliation(s)
- Koichi Takao
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University
| | - Yuka Kubota
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University
| | - Kota Kurosaki
- Department of Medical Molecular Informatics, Meiji Pharmaceutical University
| | - Hitoshi Kamauchi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University
| | - Yoshihiro Uesawa
- Department of Medical Molecular Informatics, Meiji Pharmaceutical University
| | - Yoshiaki Sugita
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University
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2
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Vaithegi K, Yi S, Lee JH, Varun BV, Park SB. Synthesis of substituted pyridines with diverse functional groups via the remodeling of (Aza)indole/Benzofuran skeletons. Commun Chem 2023; 6:112. [PMID: 37286709 DOI: 10.1038/s42004-023-00914-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/30/2023] [Indexed: 06/09/2023] Open
Abstract
Substituted pyridines with diverse functional groups are important structural motifs found in numerous bioactive molecules. Several methodologies for the introduction of various bio-relevant functional groups to pyridine have been reported, but there is still a need for a single robust method allowing the selective introduction of multiple functional groups. This study reports a ring cleavage methodology reaction for the synthesis of 2-alkyl/aryl 3-electron-withdrawing groups (esters, sulfones, and phosphonates) 5-aminoaryl/phenol pyridines via the remodeling of 3-formyl (aza)indoles/benzofurans. Totally ninety-three 5-aminoaryl pyridines and thirty-three 5-phenol pyridines were synthesized showing the robustness of the developed methodology. The application of this methodology further provided a privileged pyridine scaffold containing biologically relevant molecules and direct drug/natural product conjugation with ethyl 2-methyl nicotinate.
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Affiliation(s)
- Kannan Vaithegi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sihyeong Yi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ji Hyae Lee
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Begur Vasanthkumar Varun
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea.
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3
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Abe T, Yamashiro T, Shimizu K, Sawada D. Indole Editing Enabled by HFIP-Mediated Ring-Switch Reactions of 3-Amino-2-Hydroxyindolines. Chemistry 2022; 28:e202201113. [PMID: 35438809 DOI: 10.1002/chem.202201113] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 12/26/2022]
Abstract
This work reports the novel reactivity of hemiaminal as a precursor for indole editing at the multi-site. The HFIP-promoted indole editing of indoline hemiaminals affords 2-arylindoles through a ring-switch sequence. The key to success of this transformation is to use a cyclic hemiaminal as an α-amino aldehyde surrogate under transient tautomeric control. This transformation features mild reaction conditions and good yields with broad functional group tolerance. The utility of this transformation is presented through the one-pot protocol and the synthesis of isocryptolepine.
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Affiliation(s)
- Takumi Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
| | - Toshiki Yamashiro
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
| | - Kaho Shimizu
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
| | - Daisuke Sawada
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
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4
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Woldegiorgis AG, Han Z, Lin X. Asymmetric [3 + 3] Annulation to Construct Trifluoromethylated Pyrazolo[3,4- b]pyridin-6-ones via Chiral Phosphoric Acid and MgSO 4 Synergistic Catalysis. Org Lett 2022; 24:4058-4063. [PMID: 35613707 DOI: 10.1021/acs.orglett.2c01513] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed a novel asymmetric Friedel-Crafts alkylation/transamidation tandem reaction for the enantio- and diastereoselective synthesis of pyrazolo[3,4-b]pyridin-6-ones bearing a -CF3 unit via synergistic chiral phosphoric acid and MgSO4 catalysis. This [3 + 3] annulation protocol allows the formation of trifluoromethylated pyrazolo[3,4-b]pyridin-6-ones with two adjacent tertiary stereocenters in moderate to high yields (up to 90%), enantioselectivities (up to 97% ee), and diastereoselectivities (up to >20:1 dr).
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Affiliation(s)
| | - Zhao Han
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xufeng Lin
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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5
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Aggarwal R, Kumar S, Sadana R, Guzman A, Kumar V. Multicomponent synthesis, in vitro cytotoxic evaluation and molecular modelling studies of polyfunctionalized pyrazolo[3,4-b]pyridine derivatives against three human cancer cell lines. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1968908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ranjana Aggarwal
- CSIR-National Institute of Science Communication and Policy Research (CSIR-NIScPR), Pusa Gate, K.S. Krishnan Marg, New Delhi, India
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
| | - Suresh Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
| | - Rachna Sadana
- Department of Natural Sciences, University of Houston, Houston, USA
| | - Andrea Guzman
- Department of Natural Sciences, University of Houston, Houston, USA
| | - Virender Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra, India
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6
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Ramadan M, Aly AA, El-Haleem LEA, Alshammari MB, Bräse S. Substituted Pyrazoles and Their Heteroannulated Analogs-Recent Syntheses and Biological Activities. Molecules 2021; 26:molecules26164995. [PMID: 34443583 PMCID: PMC8401439 DOI: 10.3390/molecules26164995] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/13/2021] [Accepted: 08/13/2021] [Indexed: 02/06/2023] Open
Abstract
Pyrazoles are considered privileged scaffolds in medicinal chemistry. Previous reviews have discussed the importance of pyrazoles and their biological activities; however, few have dealt with the chemistry and the biology of heteroannulated derivatives. Therefore, we focused our attention on recent topics, up until 2020, for the synthesis of pyrazoles, their heteroannulated derivatives, and their applications as biologically active moieties. Moreover, we focused on traditional procedures used in the synthesis of pyrazoles.
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Affiliation(s)
- Mohamed Ramadan
- Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assuit 71524, Egypt;
| | - Ashraf A. Aly
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt;
- Correspondence: (A.A.A.); (S.B.)
| | | | - Mohammed B. Alshammari
- Chemistry Department, College of Sciences and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 83, Al-Kharij 11942, Saudi Arabia;
| | - Stefan Bräse
- Institute of Organic Chemistry, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
- Institute of Biological and Chemical Systems (IBCS-FMS), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
- Correspondence: (A.A.A.); (S.B.)
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7
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Kulkarni AS, Ramesh E, Srinivasa Reddy D. One‐Pot Oxidation of Secondary Alcohols to
α
‐Hydroxy Ketones: Application to Synthesis of Oxoaplysinopsin D, E, F, & G. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Akshay S. Kulkarni
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Eagala Ramesh
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- CSIR-Indian Institute of Integrated Medicine Canal Road Jammu 180001 India
| | - D. Srinivasa Reddy
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
- CSIR-Indian Institute of Integrated Medicine Canal Road Jammu 180001 India
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8
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Liu C, Ji C, Zhou T, Hong X, Szostak M. Bimetallic Cooperative Catalysis for Decarbonylative Heteroarylation of Carboxylic Acids via C‐O/C‐H Coupling. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Chengwei Liu
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Chong‐Lei Ji
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Tongliang Zhou
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Xin Hong
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Michal Szostak
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
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9
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Liu C, Ji CL, Zhou T, Hong X, Szostak M. Bimetallic Cooperative Catalysis for Decarbonylative Heteroarylation of Carboxylic Acids via C-O/C-H Coupling. Angew Chem Int Ed Engl 2021; 60:10690-10699. [PMID: 33596335 DOI: 10.1002/anie.202100949] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Indexed: 11/10/2022]
Abstract
Cooperative bimetallic catalysis is a fundamental approach in modern synthetic chemistry. We report bimetallic cooperative catalysis for the direct decarbonylative heteroarylation of ubiquitous carboxylic acids via acyl C-O/C-H coupling. This novel catalytic system exploits the cooperative action of a copper catalyst and a palladium catalyst in decarbonylation, which enables highly chemoselective synthesis of important heterobiaryl motifs through the coupling of carboxylic acids with heteroarenes in the absence of prefunctionalization or directing groups. This cooperative decarbonylative method uses common carboxylic acids and shows a remarkably broad substrate scope (>70 examples), including late-stage modification of pharmaceuticals and streamlined synthesis of bioactive agents. Extensive mechanistic and computational studies were conducted to gain insight into the mechanism of the reaction. The key step involves intersection of the two catalytic cycles via transmetallation of the copper-aryl species with the palladium(II) intermediate generated by oxidative addition/decarbonylation.
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Affiliation(s)
- Chengwei Liu
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
| | - Chong-Lei Ji
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Tongliang Zhou
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
| | - Xin Hong
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
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10
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Jamshaid S, Devkota S, Lee YR. Catalyst- and Substituent-Controlled Regio- and Stereoselective Synthesis of Indolyl Acrylates by Lewis-Acid-Catalyzed Direct Functionalization of 3-Formylindoles with Diazo Esters. Org Lett 2021; 23:2140-2146. [PMID: 33650877 DOI: 10.1021/acs.orglett.1c00277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A facile and efficient In(OTf)3- and BF3·OEt2-catalyzed direct transformation of 3-formylindoles with diazo esters has been developed for synthesizing diverse and functionalized indolyl acrylates. This one-pot protocol furnishes various (Z)-α-hydroxy-β-indolyl acrylates, (E)-β-(2-alkoxy-2-oxoethoxy)-α-indolyl acrylates, and (Z)-3-hydroxy-2-indolyl acrylates by a catalyst- and substituent-controlled, regio- and stereoselective cascade reaction. The protocol has several advantages, including low loading of the catalyst, mild reaction conditions, broad scope, and high functional group tolerance. The synthesized compounds can be further converted into diversely functionalized materials.
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Affiliation(s)
- Sana Jamshaid
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Shreedhar Devkota
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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11
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Nazeri MT, Shaabani A, Notash B. Chemoselective synthesis of fully substituted pyrroles via a one-pot four-component isocyanide-based reaction. Org Biomol Chem 2021; 19:3722-3734. [PMID: 33908431 DOI: 10.1039/d0ob02339f] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Small-ring heterocycles comprising pyrrole and pyrazole are well known for their rich biological properties. In this article, an efficient green sonochemical approach was designed for the synthesis of novel, fully substituted pyrroles connected to pyrazole scaffolds via a one-pot, four-component isocyanide-based sequential reaction. This reaction was carried out using various 5-amino-pyrazoles, aldehydes, dialkyl acetylenedicarboxylates and isocyanides for the synthesis of fully functionalized pyrroles with high chemoselectivity in the presence of a catalytic amount of PTSA·H2O, in good to excellent yields under ultrasound irradiation. This waste-free (-H2O) reaction exhibited a high atom economy and step economy via creating four new bonds, including two C-N and two C-C bonds, and the formation of two five-member heterocycles which are connected in a single operation. The mechanism of this four-component domino process involved sequential imination-dipolar cyclization-[1,5]-H shift reactions. The synthesized compounds possess interesting fluorescence features, and the bioactive scaffolds might attract great interest in the fields of clinical diagnostics and biomedical research in the future.
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Affiliation(s)
- Mohammad Taghi Nazeri
- Faculty of Chemistry, Shahid Beheshti University, G.C., P.O. Box 19396-4716, Tehran, Iran.
| | - Ahmad Shaabani
- Faculty of Chemistry, Shahid Beheshti University, G.C., P.O. Box 19396-4716, Tehran, Iran. and Peoples' Friendship University of Russia (RUDN University), 6, Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Behrouz Notash
- Faculty of Chemistry, Shahid Beheshti University, G.C., P.O. Box 19396-4716, Tehran, Iran.
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12
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Varun BV, Vaithegi K, Yi S, Park SB. Nature-inspired remodeling of (aza)indoles to meta-aminoaryl nicotinates for late-stage conjugation of vitamin B 3 to (hetero)arylamines. Nat Commun 2020; 11:6308. [PMID: 33298909 PMCID: PMC7726565 DOI: 10.1038/s41467-020-19610-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/14/2020] [Indexed: 12/16/2022] Open
Abstract
Despite the availability of numerous routes to substituted nicotinates based on the Bohlmann–Rahtz pyridine synthesis, the existing methods have several limitations, such as the inevitable ortho-substitutions and the inability to conjugate vitamin B3 to other pharmaceutical agents. Inspired by the biosynthesis of nicotinic acid (a form of vitamin B3) from tryptophan, we herein report the development of a strategy for the synthesis of meta-aminoaryl nicotinates from 3-formyl(aza)indoles. Our strategy is mechanistically different from the reported routes and involves the transformation of (aza)indole scaffolds into substituted meta-aminobiaryl scaffolds via Aldol-type addition and intramolecular cyclization followed by C–N bond cleavage and re-aromatization. Unlike previous synthetic routes, this biomimetic method utilizes propiolates as enamine precursors and thus allows access to ortho-unsubstituted nicotinates. In addition, the synthetic feasibility toward the halo-/boronic ester-substituted aminobiaryls clearly differentiates the present strategy from other cross-coupling strategies. Most importantly, our method enables the late-stage conjugation of bioactive (hetero)arylamines with nicotinates and nicotinamides and allows access to the previously unexplored chemical space for biomedical research. Vitamin B3 derivatives display a range of biological activities. Here, the authors report the synthesis of meta-aminoaryl nicotinates, derivatives of vitamin B3, and their late-stage conjugation with (hetero)arylamines, ultimately expanding the chemical space for biomedical research.
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Affiliation(s)
- Begur Vasanthkumar Varun
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kannan Vaithegi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sihyeong Yi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea.
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13
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Zheng L, Tao K, Guo W. Recent Developments in Photo‐Catalyzed/Promoted Synthesis of Indoles and Their Functionalization: Reactions and Mechanisms. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001079] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lvyin Zheng
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 People's Republic of China
| | - Kailiang Tao
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 People's Republic of China
| | - Wei Guo
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 People's Republic of China
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14
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Wang S, Song M, Li X, Huang Y, Zhao T, Wei Z, Lan Y, Tan H. Synthesis of Heterobiaryl 4-Aryl Furans through a Base-Promoted Decarboxylative Propargylation/Cycloisomerization Annulation. Org Lett 2020; 22:8752-8757. [PMID: 33021800 DOI: 10.1021/acs.orglett.0c02668] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A transition-metal-free synthesis of heterobiaryl 4-aryl furans through a base-promoted decarboxylative propargylation/cycloisomerization annulation of ethynyl benzoxazinanones and readily accessible β-keto esters or 1,3-diketones has been developed. A series of novel heterobiaryl 4-aryl furans were accessed efficiently in the presence of base under mild reaction conditions. This protocol is significant for probing the reaction mechanism of ethynyl benzoxazinanones and even other propargylic compounds.
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Affiliation(s)
- Sasa Wang
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China.,Guangdong Provincial Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Meimei Song
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
| | - Xiuguang Li
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
| | - Yunhong Huang
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
| | - Tingxiang Zhao
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
| | - Zhuoji Wei
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
| | - Yanyun Lan
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
| | - Haibo Tan
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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15
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Nazeri MT, Javanbakht S, Shaabani A, Khavasi HR. Chemo‐ and Diastereoselective Synthesis of Pyrazolo‐tetrahydropyridines
via
Multicomponent Sequential Aza‐Diels‐Alder Reactions in Water. ChemistrySelect 2019. [DOI: 10.1002/slct.201904172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | - Siamak Javanbakht
- Faculty of ChemistryShahid Beheshti University G.C. P.O. Box 19396–4716 Tehran Iran
| | - Ahmad Shaabani
- Faculty of ChemistryShahid Beheshti University G.C. P.O. Box 19396–4716 Tehran Iran
| | - Hamid Reza Khavasi
- Faculty of ChemistryShahid Beheshti University G.C. P.O. Box 19396–4716 Tehran Iran
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16
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A new indole glycoside from Kitasatospora sp. MG372-hF19 carrying a 6-deoxy-α-L-talopyranose moiety. J Antibiot (Tokyo) 2019; 73:167-170. [PMID: 31735911 DOI: 10.1038/s41429-019-0258-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/22/2019] [Accepted: 10/28/2019] [Indexed: 12/23/2022]
Abstract
Small cell lung cancer (SCLC) is a severe malignancy with early and widespread metastasis, and novel therapeutic drugs are needed. To identify cytotoxic natural compounds against SCLC, we screened libraries of microbial fermentation broths using several lung cancer cell lines. We found that the actinomycete strain MG372-hF19 produces a compound that has not been isolated from natural sources but previously chemically synthesized, 6-chloro-1H-indole-3-carboxaldehyde (1), and an entirely new compound, named 6-deoxy-α-L-talopyranose 1-(6-chloro-1H-indole-3-carboxylate) (2), together with leptomycins. The molecular formulas of the compounds were established as C9H6ClNO and C15H16ClNO6, respectively, via high-resolution electrospray ionization mass spectrometry, and their structures were determined using detailed NMR. Absolute configurational analysis of the sugar unit of compound 2 revealed that the compound incorporates the rare deoxyhexose 6-deoxy-α-L-talopyranose. Both compounds exhibited weak growth-inhibiting activities against human lung cancer cell lines.
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17
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Lee S, Cho W, Hong S, Yi S, Kim H, Baek SY, Park H, Jung J, Shin YK, Park SB. Phenotype-based discovery of a HeLa-specific cytotoxic molecule that downregulates HPV-mediated signaling pathways via oxidative damage. Org Biomol Chem 2019; 17:7388-7397. [PMID: 31342041 DOI: 10.1039/c9ob01341e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective bioactive compounds have emerged as major players in chemical biology for their potential in disrupting diverse biological pathways with minimal adverse effects. Using phenotypic screening, we identified an anti-cancer agent, SB2001, with a highly specific cytotoxicity toward HeLa human cervical cancer cells. The subsequent mechanistic study revealed that SB2001 induced apoptotic cell death through restoring p53 function and suppressed the human papillomavirus (HPV)-mediated oncoprotein signaling pathway via oxidative damage in HeLa cells. SB2001 also selectively induced HeLa-specific tumor regression without any adverse effects in an in vivo tumor xenograft model, demonstrating its potential as a promising chemical probe.
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Affiliation(s)
- Sanghee Lee
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Korea
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18
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Navari R, Balalaie S, Mehrparvar S, Darvish F, Rominger F, Hamdan F, Mirzaie S. Efficient synthesis of pyrazolopyridines containing a chromane backbone through domino reaction. Beilstein J Org Chem 2019; 15:874-880. [PMID: 31019580 PMCID: PMC6466694 DOI: 10.3762/bjoc.15.85] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 03/29/2019] [Indexed: 11/23/2022] Open
Abstract
An efficient approach for the synthesis of pyrazolopyridines containing the aminochromane motif through a base-catalyzed cyclization reaction is reported. The synthesis was carried out through a three-component reaction of (arylhydrazono)methyl-4H-chromen-4-one, malononitrile, primary amines in the presence of Et3N at room temperature. However, carrying out the reaction under the same conditions without base led to a fused chromanyl-cyanopyridine. High selectivity, high atom economy, and good to high yields in addition to mild reaction conditions are the advantages of this approach.
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Affiliation(s)
- Razieh Navari
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran, Tel: +98-21-23064226
| | - Saeed Balalaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran, Tel: +98-21-23064226.,Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Saber Mehrparvar
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran, Tel: +98-21-23064226
| | - Fatemeh Darvish
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran, Tel: +98-21-23064226
| | - Frank Rominger
- Organisch-Chemisches Institut der Universitaet Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Fatima Hamdan
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran, Tel: +98-21-23064226
| | - Sattar Mirzaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran, Tel: +98-21-23064226
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19
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Zhai M, Liu S, Gao M, Wang L, Sun J, Du J, Guan Q, Bao K, Zuo D, Wu Y, Zhang W. 3,5-Diaryl-1H-pyrazolo[3,4-b]pyridines as potent tubulin polymerization inhibitors: Rational design, synthesis and biological evaluation. Eur J Med Chem 2019; 168:426-435. [DOI: 10.1016/j.ejmech.2018.12.053] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/10/2018] [Accepted: 12/21/2018] [Indexed: 01/19/2023]
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20
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Park H, Park SB. Label-free target identification reveals oxidative DNA damage as the mechanism of a selective cytotoxic agent. Chem Sci 2019; 10:3449-3458. [PMID: 30996934 PMCID: PMC6438152 DOI: 10.1039/c8sc05465g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 02/09/2019] [Indexed: 12/14/2022] Open
Abstract
Phenotypic screening can not only identify promising first-in-class drug candidates, but can also reveal potential therapeutic targets or neomorphic functions of known proteins. In this study, we identified target proteins of SB2001, a cytotoxic agent that acts specifically against HeLa human cervical cancer cells. Because SB2001 lacks chemical modification sites, label-free target identification methods including thermal stability shift-based fluorescence difference in two-dimensional gel electrophoresis (TS-FITGE) and thermal proteome profiling (TPP) were applied to characterize its mechanism of action. Owing to their differences, the two label-free target identification methods uncovered complementary target candidates. Candidates from both methods were prioritized according to their selective lethality upon the knockdown of those genes in HeLa cells, compared to CaSki cells which were used as a negative control cell line from the human cervix. LTA4H was identified only by TS-FITGE, but not by TPP, because only one isoform was stabilized by SB2001. Furthermore, it was implied that a non-canonical function of LTA4H was involved in the SB2001 activity. MTH1 was identified by both TS-FITGE and TPP, and SB2001 inhibited the function of MTH1 in hydrolyzing oxidized nucleotides. Compared to CaSki cells, HeLa cells displayed downregulated DNA mismatch repair pathways, which made HeLa cells more susceptible to the oxidative stress caused by SB2001, resulting in increased 8-oxoG concentrations, DNA damage, and subsequent cell death.
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Affiliation(s)
- Hankum Park
- CRI Center for Chemical Proteomics , Department of Chemistry , Seoul National University , Seoul 08826 , Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics , Department of Chemistry , Seoul National University , Seoul 08826 , Korea.,Department of Biophysics and Chemical Biology , Seoul National University , Seoul 08826 , Korea .
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21
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Kumar SV, Muthusubramanian S, Perumal S. Recent Progress in the Synthesis of Pyrazolopyridines and Their Derivatives. ORG PREP PROCED INT 2019. [DOI: 10.1080/00304948.2018.1542517] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sundaravel Vivek Kumar
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai – 625021, Tamil Nadu, India
| | - Shanmugam Muthusubramanian
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai – 625021, Tamil Nadu, India
| | - Subbu Perumal
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai – 625021, Tamil Nadu, India
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22
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Li Z, Qin J, Sun X, Jin Y, Su W. Fast, Solvent-Free, and Highly Efficient Synthesis of Pyrazolo[3,4-b]Pyridines Using Microwave Irradiation and Khso4 as A Reusable Green Catalyst. HETEROCYCLES 2019. [DOI: 10.3987/com-19-14158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Shaabani A, Nazeri MT, Afshari R. 5-Amino-pyrazoles: potent reagents in organic and medicinal synthesis. Mol Divers 2018; 23:751-807. [PMID: 30552550 DOI: 10.1007/s11030-018-9902-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 12/04/2018] [Indexed: 12/31/2022]
Abstract
5-Amino-pyrazoles have proven to be a class of fascinating and privileged organic tools for the construction of diverse heterocyclic or fused heterocyclic scaffolds. This review presents comprehensively the applications of 5-amino-pyrazoles as versatile synthetic building blocks in the synthesis of remarkable organic molecules with an emphasis on versatile functionalities. Following a brief introduction of synthesis methods, planning strategies to construct organic compounds, particularly diverse heterocyclic scaffolds, such as poly-substituted heterocyclic compounds and fused heterocyclic compounds via 5-amino-pyrazoles, have been summarized. Fused heterocycles are classified as bicyclic, tricyclic, tetracyclic, and spiro-fused pyrazole derivatives. These outstanding compounds synthesized via wide variety of approaches include conventional reactions, one-pot multi-component reactions, cyclocondensation, cascade/tandem protocols, and coupling reactions. 5-Amino-pyrazoles represent a class of promising functional reagents, similar to the biologically active compounds, highlighted with diverse applications especially in the field of pharmaceutics and medicinal chemistry. Notably, this critical review covers the articles published from 1981 to 2018.
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Affiliation(s)
- Ahmad Shaabani
- Faculty of Chemistry, Shahid Beheshti University, G. C., P. O. Box 19396-4716, Tehran, Iran.
| | - Mohammad Taghi Nazeri
- Faculty of Chemistry, Shahid Beheshti University, G. C., P. O. Box 19396-4716, Tehran, Iran
| | - Ronak Afshari
- Faculty of Chemistry, Shahid Beheshti University, G. C., P. O. Box 19396-4716, Tehran, Iran
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24
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Panda S, Pradhan N, Manna D. Ring-Opening of Indoles: An Unconventional Route for the Transformation of Indoles to 1 H-Pyrazoles Using Lewis Acid. ACS COMBINATORIAL SCIENCE 2018; 20:573-578. [PMID: 30199224 DOI: 10.1021/acscombsci.8b00071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
An unusual transformation of indoles to pyrazoles via an aromatic ring-opening strategy has been developed. The salient feature of this strategy involves the C2-N1 bond opening and concomitant cyclization reaction of the C2═C3 bond of the indole moiety with the tosylhydrazone, which proceeds under transition-metal and ligand free conditions. This ring-opening functionalization of indoles provides a wide scope of differently substituted pyrazoles.
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Affiliation(s)
- Subhankar Panda
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Nirmalya Pradhan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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25
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Dotsenko VV, Krivokolysko SG, Krivokolysko BS, Frolov KA. A New Approach to the Synthesis of Functional Derivatives of 3-(4-Pyridinyl)-1H-indole and 4-(1H-Indol-3-yl)thieno[2,3-b]pyridine. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218040114] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Savant MM, Ladva KD, Pandit AB. Facile synthesis of highly functionalized novel pyrazolopyridones using oxoketene dithioacetal and their anti-HIV activity. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1458239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Mahesh M. Savant
- Department of Industrial Chemistry, Shree M. & N. Virani Science College, Rajkot, Gujarat, India
| | - Kartik D. Ladva
- Department of Chemistry, Shree M. & N. Virani Science College, Rajkot, Gujarat, India
| | - Archna B. Pandit
- Department of Chemistry, Shree M. & N. Virani Science College, Rajkot, Gujarat, India
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27
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Li C, Zhang F. Convenient Synthesis of Spirooxindole-Fused Pyrazolopyridine Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201702942] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chunmei Li
- School of Chemistry and Chemical Engineering; Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing, Zhejiang Province 312000 China
| | - Furen Zhang
- School of Chemistry and Chemical Engineering; Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing, Zhejiang Province 312000 China
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28
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Aggarwal R, Kumar S. 5-Aminopyrazole as precursor in design and synthesis of fused pyrazoloazines. Beilstein J Org Chem 2018; 14:203-242. [PMID: 29441143 PMCID: PMC5789427 DOI: 10.3762/bjoc.14.15] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 01/08/2018] [Indexed: 12/31/2022] Open
Abstract
The condensation of 5-aminopyrazole with various bielectrophilic moieties results in the formation of pyrazoloazines, an interesting array of fused heterocyclic systems. The development of new synthetic routes towards pyrazoloazines for their biological and medicinal exploration is an attractive area for researchers throughout the world. The present review focuses on various synthetic methods developed in the last decade for the synthesis of differently substituted pyrazoloazines by a broad range of organic reactions by means of 5-aminopyrazole as a precursor.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra-136119, Haryana, India
| | - Suresh Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra-136119, Haryana, India
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29
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Sayed M, Kamal El-Dean AM, Ahmed M, Hassanien R. Synthesis of some heterocyclic compounds derived from indole as antimicrobial agents. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2017.1403627] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mostafa Sayed
- Department of Chemistry, New Valley Faculty of Science, Assiut University, Assiut, Egypt
| | | | - Mostafa Ahmed
- Department of Chemistry, New Valley Faculty of Science, Assiut University, Assiut, Egypt
| | - Reda Hassanien
- Department of Chemistry, New Valley Faculty of Science, Assiut University, Assiut, Egypt
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30
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Zhang X, Long K, He J, Fu J, Zhang F, Li C. Efficient Domino Strategy for the Synthesis of Substituted Bipyrazole Derivatives. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xi Zhang
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing Zhejiang Province 312000 China
| | - Kai Long
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing Zhejiang Province 312000 China
| | - Jiayi He
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing Zhejiang Province 312000 China
| | - Jialian Fu
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing Zhejiang Province 312000 China
| | - Furen Zhang
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing Zhejiang Province 312000 China
| | - Chunmei Li
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process; Shaoxing University; Shaoxing Zhejiang Province 312000 China
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31
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Urvashi U, Tandon V, Das P, Kukreti S. Synthesis of 3,6-diaryl-1H-pyrazolo[3,4-b]pyridines via one-pot sequential Suzuki–Miyaura coupling. RSC Adv 2018; 8:34883-34894. [PMID: 35547054 PMCID: PMC9087644 DOI: 10.1039/c8ra07104g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 09/13/2018] [Indexed: 01/15/2023] Open
Abstract
A practical synthesis of diarylpyrazolo[3,4-b]pyridine derivatives by a combination of chemoselective Suzuki–Miyaura cross-coupling reactions was developed. The sequential arylation strategy can be performed in a one-pot manner without much loss of efficiency when compared to the corresponding stepwise synthesis. These conditions are applicable to the coupling of a wide variety of aryl and heteroaryl-boronic acids with pyrazolo[3,4-b]pyridines with high selectivity of the C3 over the C6 position, thus enabling the rapid construction of a diverse array of medicinally important diarylpyrazolo[3,4-b]pyridines. An efficient method to produce diarylpyrazolo[3,4-b]pyridines derivatives via combination of chemoselective Suzuki–Miyaura cross-coupling reactions has been developed.![]()
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Affiliation(s)
| | - Vibha Tandon
- Special Centre for Molecular Medicine
- Jawaharlal Nehru University
- New Delhi-110067
- India
| | - Parthasarathi Das
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad-826004
- India
| | - S. Kukreti
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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32
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Singh S, Chauhan P, Ravi M, Yadav PP. Eosin Y–Yb(OTf)3 catalyzed visible light mediated electrocyclization/indole ring opening towards the synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines. NEW J CHEM 2018. [DOI: 10.1039/c8nj00862k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines via Lewis acid and visible light photo-catalysis at room temperature.
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Affiliation(s)
- Shikha Singh
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Parul Chauhan
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Makthala Ravi
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Prem P. Yadav
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
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33
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Charris-Molina A, Castillo JC, Macías M, Portilla J. One-Step Synthesis of Fully Functionalized Pyrazolo[3,4-b]pyridines via Isobenzofuranone Ring Opening. J Org Chem 2017; 82:12674-12681. [PMID: 29125772 DOI: 10.1021/acs.joc.7b02471] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel series of fully substituted pyrazolo[3,4-b]pyridines 4 has been prepared in a regioselective manner by the microwave-assisted reaction between N-substituted 5-aminopyrazoles 1 and 3-(3-oxo-2-benzofuran-1(3H)-ylidene)pentane-2,4-dione (2). This is the second reported example of a cyclocondensation reaction using substrate 2 as a 1,3-bis-electrophilic reagent. Remarkably, this synthesis offers functionalized products with acetyl and carboxyl groups in one step, in good yields, and with short reaction times. Additionally, the cyclization intermediate 3 was isolated, allowing us to postulate a mechanism for this reaction, which is initiated via isobenzofuranone ring opening of 2 in a Michael-type reaction. The structures of the products and regioselectivity of the reactions were determined on the basis of NMR measurements and X-ray diffraction. For this new reaction using substrate 2, the optimal reaction conditions and its scope were investigated.
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Affiliation(s)
- Andrés Charris-Molina
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Juan-Carlos Castillo
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Mario Macías
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Jaime Portilla
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes , Carrera 1 No. 18A-10, Bogotá 111711, Colombia
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Reactivity of indole-3-alkoxides in the absence of acids: Rapid synthesis of homo-bisindolylmethanes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Ben Mohamed S, Rachedi Y, Hamdi M, Le Bideau F, Dejean C, Dumas F. An Efficient Synthetic Access to Substituted Thiazolyl-pyrazolyl-chromene-2-ones from Dehydroacetic Acid and Coumarin Derivatives by a Multicomponent Approach. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600173] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Ma C, Wen P, Li J, Han X, Wu Z, Huang G. Palladium and Copper Cocatalyzed Intermolecular Cyclization Reaction: Synthesis of 5-Aminopyrazole Derivatives. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500767] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Liu M, Yin G, Zhu C, Yao C. Selective Synthesis of New Tetracyclic Coumarin-fused Pyrazolo[3,4- b]pyridines and Pyrazolo[3,4- b]pyridin-6(7 H)-ones. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2473] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Meilin Liu
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology; Hubei Normal University; Huangshi 435002 China
| | - Guodong Yin
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology; Hubei Normal University; Huangshi 435002 China
| | - Can Zhu
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology; Hubei Normal University; Huangshi 435002 China
| | - Chaochao Yao
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology; Hubei Normal University; Huangshi 435002 China
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39
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Orrego-Hernández J, Cobo J, Portilla J. Chemoselective Synthesis of 5-Alkylamino-1H-pyrazole-4-carbaldehydes by Cesium- and Copper-Mediated Amination. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500505] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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40
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Iodine-catalyzed C3-formylation of indoles via C–N bond cleavage of tertiary amines under aerobic conditions. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Prakash R, Shekarrao K, Saikia P, Gogoi S, Boruah RC. Palladium mediated regioselective intramolecular Heck reaction: synthesis of 1,3,4-trisubstituted pyrazolo[3,4-b]pyridines, 3H-pyrazolo[3,4-c]isoquinolines and 3H-pyrazolo[4,3-f][1,7]naphthyridines. RSC Adv 2015. [DOI: 10.1039/c4ra17190j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A new approach for the synthesis of 1,3,4-trisubstituted pyrazolo[3,4-b]pyridines, 3H-pyrazolo[3,4-c]isoquinolines and 3H-pyrazolo[4,3-f][1,7]naphthyridines via an intramolecular Heck reaction is described.
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Affiliation(s)
- Rashmi Prakash
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Kommuri Shekarrao
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Pallabi Saikia
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Sanjib Gogoi
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Romesh C. Boruah
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
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42
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Xu BH, Tu MS, Liu YP, Jiang B, Wang XH, Tu SJ. Microwave-Assisted Three-Component Reactions Leading to Pyrano-Fused Pyrazolo[3,4- b]pyridines. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bi-Hui Xu
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Xuzhou Normal University; Xuzhou Jiangsu 221116 China
| | - Man-Su Tu
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Xuzhou Normal University; Xuzhou Jiangsu 221116 China
| | - Yin-Ping Liu
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Xuzhou Normal University; Xuzhou Jiangsu 221116 China
| | - Bo Jiang
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Xuzhou Normal University; Xuzhou Jiangsu 221116 China
| | - Xing-Hang Wang
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Xuzhou Normal University; Xuzhou Jiangsu 221116 China
| | - Shu-Jiang Tu
- School of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Xuzhou Normal University; Xuzhou Jiangsu 221116 China
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Kim J, Lee WS, Koo J, Lee J, Park SB. Synthesis and library construction of privileged tetra-substituted Δ5-2-oxopiperazine as β-turn structure mimetics. ACS COMBINATORIAL SCIENCE 2014; 16:24-32. [PMID: 24215277 DOI: 10.1021/co400128a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In this study, we developed an efficient and practical procedure for the synthesis of tetra-substituted Δ5-2-oxopiperazine that mimics the bioactive β-turn structural motif of proteins. This synthetic route is robust and modular enough to accommodate four different substituents to obtain a high level of molecular diversity without any deterioration in stereochemical enrichment of the natural and unnatural amino acids. Through the in silico studies, including a distance calculation of side chains and a conformational overlapping of our model compound with a native β-turn structure, we successfully demonstrated the conformational similarity of tetra-substituted Δ5-2-oxopiperazine to the β-turn motif. For the library construction in a high-throughput manner, the fluorous tag technology was adopted with the use of a solution-phase parallel synthesis platform. A 140-membered pilot library of tetra-substituted Δ5-2-oxopiperazines was achieved with an average purity of 90% without further purification.
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Affiliation(s)
- Jonghoon Kim
- Department of Chemistry and ‡Department of Biophysics and Chemical
Biology, Seoul National University, Seoul 151−747, Korea
| | - Won Seok Lee
- Department of Chemistry and ‡Department of Biophysics and Chemical
Biology, Seoul National University, Seoul 151−747, Korea
| | - Jaeyoung Koo
- Department of Chemistry and ‡Department of Biophysics and Chemical
Biology, Seoul National University, Seoul 151−747, Korea
| | - Jeongae Lee
- Department of Chemistry and ‡Department of Biophysics and Chemical
Biology, Seoul National University, Seoul 151−747, Korea
| | - Seung Bum Park
- Department of Chemistry and ‡Department of Biophysics and Chemical
Biology, Seoul National University, Seoul 151−747, Korea
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44
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Marinozzi M, Marcelli G, Carotti A, Natalini B. One-pot, telescoped synthesis of N-aryl-5-aminopyrazoles from anilines in environmentally benign conditions. RSC Adv 2014. [DOI: 10.1039/c3ra47541g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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45
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Wang R, Falck JR. Room temperature, open-flask C–H arylation of electron-deficient heteroarenes with triazenes: rapid synthesis of heterobiaryls. Org Chem Front 2014. [DOI: 10.1039/c4qo00213j] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aryl triazenes were coupled with heteroarenes via C–H functionalization to produce heterobiaryls in moderate to good yields at ambient temperature.
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Affiliation(s)
- Rui Wang
- Division of Chemistry
- Department of Biochemistry
- University of Texas Southwestern Medical Center
- Dallas, 75390-9038 USA
| | - John R. Falck
- Division of Chemistry
- Department of Biochemistry
- University of Texas Southwestern Medical Center
- Dallas, 75390-9038 USA
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46
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Shekarrao K, Kaishap PP, Saddanapu V, Addlagatta A, Gogoi S, Boruah RC. Microwave-assisted palladium mediated efficient synthesis of pyrazolo[3,4-b]pyridines, pyrazolo[3,4-b]quinolines, pyrazolo[1,5-a]pyrimidines and pyrazolo[1,5-a]quinazolines. RSC Adv 2014. [DOI: 10.1039/c4ra02865a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient method was developed for the synthesis of pyrazole fused heterocycles via the palladium-catalyzed solvent free reaction of β-halovinyl/aryl aldehydes and 3-aminopyrazoles/5-aminopyrazoles under microwave irradiation in good yields.
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Affiliation(s)
- Kommuri Shekarrao
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat, India
| | - Partha Pratim Kaishap
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat, India
| | | | | | - Sanjib Gogoi
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat, India
| | - Romesh C. Boruah
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat, India
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47
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Li Y, Chang M, Liu R, Lin G, Gao W. A facile synthesis of (E)-3-styryl-1-phenyl cyclohepta[c]pyrazol-8(1H)-ones. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-012-0785-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Chen J, Geng ZC, Li N, Huang XF, Pan FF, Wang XW. Organocatalytic Asymmetric Michael Addition of Aliphatic Aldehydes to Indolylnitroalkenes: Access to Contiguous Stereogenic Tryptamine Precursors. J Org Chem 2013; 78:2362-72. [DOI: 10.1021/jo3024945] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian Chen
- Key Laboratory
of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s
Republic of China
| | - Zhi-Cong Geng
- Key Laboratory
of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s
Republic of China
| | - Ning Li
- Key Laboratory
of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s
Republic of China
| | - Xiao-Fei Huang
- Key Laboratory
of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s
Republic of China
| | - Feng-Feng Pan
- Key Laboratory
of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s
Republic of China
| | - Xing-Wang Wang
- Key Laboratory
of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s
Republic of China
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49
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Lee S, Jo A, Park SB. Discovery of a highly selective FLT3 kinase inhibitor from phenotypic cell viability profiling. MEDCHEMCOMM 2013. [DOI: 10.1039/c2md20169k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We discovered a novel heterobiaryl pyrazolopyridine skeleton as a selective FLT3 inhibitor from phenotype-based viability profiling and hypothesis-driven deconvolution.
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Affiliation(s)
- Sanghee Lee
- Department of Chemistry
- Seoul National University
- Seoul
- Korea
| | - Ala Jo
- Department of Chemistry
- Seoul National University
- Seoul
- Korea
| | - Seung Bum Park
- Department of Chemistry
- Seoul National University
- Seoul
- Korea
- Department of Biophysics and Chemical Biology/BioMAX institute
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50
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Giraud F, Akué-Gédu R, Nauton L, Candelon N, Debiton E, Théry V, Anizon F, Moreau P. Synthesis and biological activities of 4-substituted pyrrolo[2,3-a]carbazole Pim kinase inhibitors. Eur J Med Chem 2012; 56:225-36. [PMID: 22982527 DOI: 10.1016/j.ejmech.2012.08.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 08/20/2012] [Accepted: 08/20/2012] [Indexed: 11/18/2022]
Abstract
Pyrrolo[2,3-a]carbazole-3-carbaldehydes are potent Pim kinase inhibitors with in vitro antiproliferative activities. In the present study, we report the synthesis and biological activities (Pim kinase inhibition and in vitro antiproliferative potency) of new 4-substituted pyrrolo[2,3-a]carbazoles. The results demonstrated that the Pim kinase inhibitory potency (especially Pim-3) can be conserved for pyrrolo[2,3-a]carbazoles bearing a methoxycarbonyl group at the 4-position without a formyl at the 3-position. Moreover, compound 27 that was found to be active against Pim-1 and Pim-3 kinases showed antiproliferative activities in the micromolar range.
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Affiliation(s)
- Francis Giraud
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France
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