1
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Hammouda MM, Gaffer HE, Elattar KM. Insights into the medicinal chemistry of heterocycles integrated with a pyrazolo[1,5- a]pyrimidine scaffold. RSC Med Chem 2022; 13:1150-1196. [PMID: 36325400 PMCID: PMC9580358 DOI: 10.1039/d2md00192f] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/25/2022] [Indexed: 09/10/2023] Open
Abstract
Pyrazolo[1,5-a]pyrimidines are the dominant motif of many drugs; for instance, zaleplon and indiplon are sedative agents and ocinaplon was identified as an anxiolytic agent. The importance of this class of compounds lies in its varied and significant biological activities, and accordingly, considerable methods have been devised to prepare these compounds. Hence, other derivatives of this class of compounds were prepared by substitution reactions with different nucleophiles exploiting the activity of groups linked to the ring carbon and nitrogen atoms. The methods used vary through the condensation reactions of the aminopyrazoles with 1,2-allenic, enaminonitriles, enaminones, 1,3-diketones, unsaturated nitriles, or unsaturated ketones. Alternatively, these compounds are prepared through the reactions of acyclic reagents, as these methods were recently developed efficiently with high yields. The current review highlighted the recent progress of the therapeutic potential of pyrazolo[1,5-a]pyrimidines as antimicrobial, anticancer, antianxiety, anti-proliferative, analgesic, and antioxidant agents, carboxylesterase, translocator protein and PDE10A inhibitors, and selective kinase inhibitors.
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Affiliation(s)
- Mohamed M Hammouda
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
- Chemistry Department, Faculty of Science, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt
| | - Hatem E Gaffer
- Dyeing and Printing Department, Textile Research Division, National Research Center Dokki Cairo 12622 Egypt
| | - Khaled M Elattar
- Unit of Genetic Engineering and Biotechnology, Faculty of Science, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt +201010655354
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2
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Ren J, Ding S, Li X, Bi R, Zhao Q. An Approach for the Synthesis of Pyrazolo[1,5- a]pyrimidines via Cu(II)-Catalyzed [3+3] Annulation of Saturated Ketones with Aminopyrazoles. J Org Chem 2021; 86:12762-12771. [PMID: 34464147 DOI: 10.1021/acs.joc.1c01343] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-step synthesis of diversely substituted pyrazolo[1,5-a]pyrimidines from saturated ketones and 3-aminopyrazoles is presented. This transformation involves the in situ formation of α,β-unsaturated ketones via a radical process, followed by [3+3] annulation with 3-aminopyrazoles in one pot. Mechanistic studies have shown that the dual C(sp3)-H bond functionalization of inactive ketones is required for the formation of the title compounds. Notably, this dehydrogenative coupling process provides access to a host of functionalized pyrazolo[1,5-a]pyrimidines with antitumor potential from commercially available substrates.
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Affiliation(s)
- Jian Ren
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Shihua Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiaonian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Ran Bi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Qinshi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.,Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
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3
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Soliman NN, Tag YM, Bayoumy NM. Synthesis and molecular docking of some new 3,5‐bis‐(diazipine, pyrazolopyrimidine, pyrimidine, and pyrazole) pyridine derivatives and their
in vitro
and
in vivo
biological evaluation as potential antitumor agents. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nanees N. Soliman
- Department of Chemistry, Faculty of Science Mansoura University Mansoura Egypt
| | - Yasmin M. Tag
- Department Oral Biology, Faculty of Oral and Dental Medicine Delta University for Science and Technology Mansoura Egypt
| | - Nesma M. Bayoumy
- Department Dental Biomaterials, Faculty of Oral and Dental Medicine Delta University for Science and Technology Mansoura Egypt
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4
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Jismy B, Guillaumet G, Akssira M, Tikad A, Abarbri M. Efficient microwave-assisted Suzuki–Miyaura cross-coupling reaction of 3-bromo pyrazolo[1,5- a]pyrimidin-5(4 H)-one: towards a new access to 3,5-diarylated 7-(trifluoromethyl)pyrazolo[1,5- a]pyrimidine derivatives. RSC Adv 2021; 11:1287-1302. [PMID: 35747396 PMCID: PMC9134006 DOI: 10.1039/d0ra07959f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 12/06/2020] [Indexed: 12/24/2022] Open
Abstract
A convenient and efficient synthetic route to C3-arylated 7-trifluoromethylpyrazolo[1,5-a]pyrimidin-5-one derivatives has been reported starting from 3-bromo-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-5-one through a Suzuki–Miyaura cross-coupling reaction. The arylation (heteroarylation) strategy can be performed using a wide variety of aryl and heteroaryl boronic acids and requiring a tandem catalyst XPhosPdG2/XPhos to avoid the debromination reaction. These optimized conditions were successfully extended to the synthesis of 7-, 8- and 9-arylated pyrimido[1,2-b]indazol-2-ones from their corresponding brominated starting materials. Furthermore, the second C-5 arylation of C3-arylated pyrazolo[1,5-a]pyrimidin-5-ones was achieved under standard Suzuki–Miyaura cross-coupling conditions, after activating the C–O bond of the lactam function with PyBroP, giving access to a small library of 3,5-diarylated 7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidines in good to excellent yields. The interest of this approach has been highlighted by the synthesis of a known anti-inflammatory agent. Additionally, a preliminary biological evaluation has revealed that a number of derivatives display micromolar IC50 values against monoamine oxidase B, an important target in the field of neurodegenerative disorders. A convenient and efficient synthetic route to C3-arylated 7-trifluoromethylpyrazolo[1,5-a]pyrimidin-5-one derivatives has been reported starting from 3-bromo-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-5-one through a Suzuki–Miyaura cross-coupling reaction.![]()
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Affiliation(s)
- Badr Jismy
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E). EA 6299
- Faculté des Sciences
- 37200 Tours
- France
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique (ICOA)
- Université d'Orléans
- UMR CNRS 7311
- France
| | - Mohamed Akssira
- Laboratoire de Chimie Physique et de Chimie Bioorganique
- URAC 22
- 28800 Mohammedia
- Morocco
| | - Abdellatif Tikad
- Laboratoire de Chimie Moléculaire et Substances Naturelles
- Faculté des Sciences
- Département de Chimie
- Université Moulay Ismail
- Meknès 50050
| | - Mohamed Abarbri
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E). EA 6299
- Faculté des Sciences
- 37200 Tours
- France
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5
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Elkina NA, Burgart YV, Shchegolkov EV, Krasnykh OP, Maslova VV, Triandafilova GA, Solodnikov SS, Muryleva AA, Misiurina MA, Slita AV, Zarubaev VV, Saloutin VI. Competitive routes to cyclizations of polyfluoroalkyl-containing 2-tolylhydrazinylidene-1,3-diketones with 3-aminopyrazoles into bioactive pyrazoloazines. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109648] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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6
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New pyrazolopyrimidine derivatives with anticancer activity: Design, synthesis, PIM-1 inhibition, molecular docking study and molecular dynamics. Bioorg Chem 2020; 100:103944. [PMID: 32450389 DOI: 10.1016/j.bioorg.2020.103944] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 04/07/2020] [Accepted: 05/12/2020] [Indexed: 11/21/2022]
Abstract
In this study, new pyrazolopyrimidine derivatives were designed and evaluated for anticancer activity. PIM-1 inhibitiory activity were measured for the most potent compounds. Molecular docking study and molecular dynamics were also done. Thus, the novel derivatives of pyrazolo[1,5-a]pyrimidine have been synthesized and characterized using different spectroscopic techniques. HMBC and NOESY experiments were used to confirm regiospecific structure of pyrimidine ring. The newly synthesized derivatives were evaluated for their antitumor activities against HCT-116 and MCF-7 cell lines. These derivatives showed clear in vitro antitumor activities. Compound 5h showed the highest bioactivity (IC50 = 1.51 µM) against HCT-116 cell line. While, compound 6c was the most potent derivative, its IC50 was 7.68 µM against MCF-7 cell line. Compounds 5c, 5g, 5h, 6a and 6c showed PIM-1 inhibitory activity with IC50 of 1.26, 0.95, 0.60, 1.82, 0.67, respectively µM that could be correlated with their cytotoxic effect. Molecular docking study was done to predict the mode of binding of the target compounds inside PIM-1 active site. The molecular dynamic simulation was conducted in order to evaluate stability of binding of the tested compounds.
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7
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Rao RN, Chanda K. An assessment study of known pyrazolopyrimidines: Chemical methodology and cellular activity. Bioorg Chem 2020; 99:103801. [PMID: 32278206 DOI: 10.1016/j.bioorg.2020.103801] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 10/24/2022]
Abstract
Heterocyclic compounds with nitrogen atom play a key role in the normal life cycle of a cell. Pyrazolopyrimidine is a privileged class of nitrogen containing fused heterocyclic compound contributing to a major portion of all lead molecules in medicinal chemistry. The thumbprint of pyrazolopyrimidine as a pharmacophore is always noticeable due to its analogy with the adenine base in DNA. Pyrazolopyrimidines are divided into five types [I, II, III, IV, V] based on the mechanism of action on the specific target conferring a wide scope of research which has accelerated the interest of researchers to investigate its biological profile. In 1956, the anti-cancer activity of pyrazolopyrimidine was evaluated for the first time with appreciable results. Since then, medicinal chemists centered their work on various methods of synthesis and evaluating the biological profile of pyrazolopyrimidine isomers. This report consists of novel methodologies followed to synthesize pyrazolopyrimidine isomers along with a note on their biological significance. To the best of our knowledge, this review article will be first of its kind to encompass different synthetic procedures along with anti-cancer, kinase inhibition, phosphodiesterase inhibition and receptor blocking activity of pyrazolopyrimidine moieties. IC50 values of potent compounds are added wherever necessary to understand the suitability of pyrazolopyrimidine skeletons for a specific biological activity.
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Affiliation(s)
- R Nishanth Rao
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, India
| | - Kaushik Chanda
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, India
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8
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El-Sayed EH, Mohamed KS. Synthesis and Anti-inflammatory Evaluation of Some New Pyrazole, Pyrimidine, Pyrazolo[1,5-a]Pyrimidine, Imidazo[1,2-b]Pyrazole and Pyrazolo[5,1-b]Quinazoline Derivatives Containing Indane Moiety. Polycycl Aromat Compd 2019. [DOI: 10.1080/10406638.2019.1653941] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | - Khaled S. Mohamed
- Engineering Chemistry Department, Higher Institute for Engineering and Technology, New Damietta, Egypt
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9
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Atatreh N, Youssef AM, Ghattas MA, Al Sorkhy M, Alrawashdeh S, Al-Harbi KB, El-Ashmawy IM, Almundarij TI, Abdelghani AA, Abd-El-Aziz AS. Anti-inflammatory drug approach: Synthesis and biological evaluation of novel pyrazolo[3,4-d]pyrimidine compounds. Bioorg Chem 2019; 86:393-400. [DOI: 10.1016/j.bioorg.2019.02.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/03/2019] [Accepted: 02/04/2019] [Indexed: 11/29/2022]
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10
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El-Naggar M, Hassan AS, Awad HM, Mady MF. Design, Synthesis and Antitumor Evaluation of Novel Pyrazolopyrimidines and Pyrazoloquinazolines. Molecules 2018; 23:E1249. [PMID: 29882908 PMCID: PMC6100441 DOI: 10.3390/molecules23061249] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/19/2018] [Accepted: 05/22/2018] [Indexed: 11/16/2022] Open
Abstract
A series of N-aryl-7-aryl-pyrazolo[1,5-a]pyrimidines 18a⁻u and N-aryl-pyrazolo[1,5-a]quinazolines 25a⁻c were designed and synthesized via the reaction of 5-aminopyrazoles 11a⁻c with enaminones 12a⁻g or 19, respectively. The new compounds were screened for their in vitro antitumor activity toward liver (HepG-2) and breast (MCF-7) human cancer cells using 3-[4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide MTT assay. From the results, it was found that all compounds showed dose-dependent cytotoxic activities against both HepG-2 and MCF-7 cells. Two compounds 18o and 18a were selected for further investigations. Cell cycle analysis of liver (HepG-2) cells treated with 18o and breast (MCF-7) cells treated with 18a showed cell cycle arrest at G2/M phase and pro-apoptotic activity as indicated by annexin V-FITC staining.
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Affiliation(s)
- Mohamed El-Naggar
- Chemistry Department, Faculty of Sciences, University of Sharjah, Sharjah 27272, UAE.
| | - Ashraf S Hassan
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Dokki, Cairo 12622, Egypt.
| | - Hanem M Awad
- Department of Tanning Materials and Leather Technology, National Research Centre, Dokki, Cairo 12622, Egypt.
| | - Mohamed F Mady
- Department of Green Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt.
- Deaprtment of Chemistry, Bio Science and Environmental Technology, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway.
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11
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Jismy B, Guillaumet G, Allouchi H, Akssira M, Abarbri M. Concise and Efficient Access to 5,7-Disubstituted Pyrazolo[1,5-a]pyrimidines by Pd-Catalyzed Sequential Arylation, Alkynylation and SNArReaction. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701024] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Badr Jismy
- Département de Chimie; Université François Rabelais; Laboratoire d'Infectiologie et Santé Publique (UMR 1282); équipe Recherche et Innovation en Chimie Médicinale; Parc de Grandmont 37200 Tours France
- Laboratoire de Chimie Physique et de Chimie Bioorganique; Département de Chimie Université Hassan II de Casablanca; URAC 22; 28800 Mohammedia Maroc
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans; UMR CNRS 7311; BP 6759, rue de Chartres 45067 Orléans Cedex2 France
| | - Hassan Allouchi
- Département de Chimie; Université François Rabelais; Laboratoire d'Infectiologie et Santé Publique (UMR 1282); équipe Recherche et Innovation en Chimie Médicinale; Parc de Grandmont 37200 Tours France
| | - Mohamed Akssira
- Laboratoire de Chimie Physique et de Chimie Bioorganique; Département de Chimie Université Hassan II de Casablanca; URAC 22; 28800 Mohammedia Maroc
| | - Mohamed Abarbri
- Département de Chimie; Université François Rabelais; Laboratoire d'Infectiologie et Santé Publique (UMR 1282); équipe Recherche et Innovation en Chimie Médicinale; Parc de Grandmont 37200 Tours France
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12
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Hassan AS, Masoud DM, Sroor FM, Askar AA. Synthesis and biological evaluation of pyrazolo[1,5-a]pyrimidine-3-carboxamide as antimicrobial agents. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1990-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Khan SA, Asiri AM, Rahman RM, Elroby SA, Aqlan FMS, Wani MY, Sharma K. Multistep Synthesis of Fluorine-Substituted Pyrazolopyrimidine Derivatives With Higher Antibacterial Efficacy Based on In Vitro
Molecular Docking and Density Functional Theory. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2923] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Salman A. Khan
- Chemistry Department, Faculty of Science; King Abdulaziz University; P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Abdullah M. Asiri
- Chemistry Department, Faculty of Science; King Abdulaziz University; P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR); King Abdulaziz University; P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - R. M. Rahman
- Chemistry Department, Faculty of Science; King Abdulaziz University; P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Shaaban A. Elroby
- Chemistry Department, Faculty of Science; King Abdulaziz University; P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Chemistry Department, Faculty of Science; Beni-Suef University; Beni-Suef Egypt
| | - Faisal M. S. Aqlan
- Chemistry Department, Faculty of Science; Jeddah University; Jeddah Saudi Arabia
| | - Mohmmad Y. Wani
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine; The University of Texas Health Science Center at Houston; 1881 East Road 77054 Texas USA
| | - Kamlesh Sharma
- Department of Applied Science, School of Engineering and Technology; The NorthCap University; Gurgaon Haryana India
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14
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Cherukupalli S, Karpoormath R, Chandrasekaran B, Hampannavar GA, Thapliyal N, Palakollu VN. An insight on synthetic and medicinal aspects of pyrazolo[1,5-a]pyrimidine scaffold. Eur J Med Chem 2016; 126:298-352. [PMID: 27894044 DOI: 10.1016/j.ejmech.2016.11.019] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/19/2016] [Accepted: 11/08/2016] [Indexed: 11/26/2022]
Abstract
Pyrazolo[1,5-a]pyrimidine scaffold is one of the privileged hetrocycles in drug discovery. Its application as a buliding block for developing drug-like candidates has displayed broad range of medicinal properties such as anticancer, CNS agents, anti-infectious, anti-inflammatory, CRF1 antagonists and radio diagnostics. The structure-activity relationship (SAR) studies have acquired greater attention amid medicinal chemists, and many of the lead compounds were derived for various disease targets. However, there is plenty of room for the medicinal chemists to further exploit this privileged scaffold in developing potential drug candidates. The present review briefly outlines relevant synthetic strategies employed for pyrazolo[1,5-a]pyrimidine derivatives. It also extensively reveals significant biological properties along with SAR studies. To the best of our understanding current review is the first attempt made towards the compilation of significant advances made on pyrazolo[1,5-a]pyrimidines reported since 1980s.
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Affiliation(s)
- Srinivasulu Cherukupalli
- Department of Pharmaceutical Chemistry, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa.
| | - Balakumar Chandrasekaran
- Department of Pharmaceutical Chemistry, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Girish A Hampannavar
- Department of Pharmaceutical Chemistry, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Neeta Thapliyal
- Department of Pharmaceutical Chemistry, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Venkata Narayana Palakollu
- Department of Pharmaceutical Chemistry, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
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15
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Golubev P, Karpova EA, Pankova AS, Sorokina M, Kuznetsov MA. Regioselective Synthesis of 7-(Trimethylsilylethynyl)pyrazolo[1,5-a]pyrimidines via Reaction of Pyrazolamines with Enynones. J Org Chem 2016; 81:11268-11275. [PMID: 27749057 DOI: 10.1021/acs.joc.6b02217] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Condensation of enynones readily available from cheap starting material with pyrazolamines provides easy access to fluorescent 7-(trimethylsilylethynyl)pyrazolo[1,5-a]pyrimidines. The reaction is straightforward, does not require the use of any additional reagents or catalysts, and can be performed without inert atmosphere. Various substituents and functional groups in both enynone and pyrazolamine are tolerated. The presented method features full regioselectivity, high isolated yields, and simplicity of both setup and product purification. Fluorescent properties of the obtained pyrazolopyrimidines were studied.
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Affiliation(s)
- Pavel Golubev
- Institute of Chemistry, Saint Petersburg State University , Universitetsky pr. 26, 198504 Saint Petersburg, Russia
| | - Ekaterina A Karpova
- Institute of Chemistry, Saint Petersburg State University , Universitetsky pr. 26, 198504 Saint Petersburg, Russia
| | - Alena S Pankova
- Institute of Chemistry, Saint Petersburg State University , Universitetsky pr. 26, 198504 Saint Petersburg, Russia
| | - Mariia Sorokina
- Institute of Chemistry, Saint Petersburg State University , Universitetsky pr. 26, 198504 Saint Petersburg, Russia
| | - Mikhail A Kuznetsov
- Institute of Chemistry, Saint Petersburg State University , Universitetsky pr. 26, 198504 Saint Petersburg, Russia
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16
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Synthesis, crystal structure, characterization and antifungal activity of pyrazolo[1,5-a]pyrimidines derivatives. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.05.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Kaping S, Boiss I, Singha LI, Helissey P, Vishwakarma JN. A facile, regioselective synthesis of novel 3-(N-phenylcarboxamide)pyrazolo[1,5-a]pyrimidine analogs in the presence of KHSO4 in aqueous media assisted by ultrasound and their antibacterial activities. Mol Divers 2015; 20:379-90. [PMID: 26511367 DOI: 10.1007/s11030-015-9639-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 10/10/2015] [Indexed: 11/25/2022]
Abstract
An environmentally benign, simple, efficient, and convenient route is described for the synthesis of novel pyrazolo[1,5-a]pyrimidine derivatives under ultrasound irradiation. Condensation of aminopyrazole 5 with formylated active proton compounds (6, 8, E-G, 12, and 15) furnished pyrazolopyrimidine (7, 9, 10, 13, and 16) in high-to-excellent yields. In comparison with conventional methods, ultrasound irradiation offers several advantages, such as shorter reaction time, higher yields, milder conditions, and environmental friendliness. The reaction is clean with excellent yields and reduces the use of solvents. X-ray crystallographic study of compound 7c confirmed the regioselectivity of the reaction. The antibacterial profile of the newly synthesized compounds was evaluated by cup and saucer method.
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Affiliation(s)
- Shunan Kaping
- Organic Research Laboratory, Department of Chemical Science, Assam Don Bosco University, Airport Road-Azara, Guwahati, 781017, India
| | - Ivee Boiss
- Department of Biotechnology, St. Anthonys College, Shillong, 793001, India
| | | | - Philippe Helissey
- Laboratoire de Chimie Thérapeutique, UMR CNRS No. 8638, Université Paris Descartes, Faculte des Sciences Pharmaceutiques et Biologiques, 75270, Paris Cedex 06, France
| | - Jai N Vishwakarma
- Organic Research Laboratory, Department of Chemical Science, Assam Don Bosco University, Airport Road-Azara, Guwahati, 781017, India.
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18
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Sheikhi-Mohammareh S, Shiri A, Bakavoli M, Mague J. A Straightforward Approach for the Synthesis of Novel Derivatives of Benzo[b]pyrazolo[5′,1′:2,3]pyrimido[4,5-e][1,4]thiazine. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2432] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Ali Shiri
- Department of Chemistry, Faculty of Science; Ferdowsi University of Mashhad; 91775-1436 Mashhad Iran
| | - Mehdi Bakavoli
- Department of Chemistry, Faculty of Science; Ferdowsi University of Mashhad; 91775-1436 Mashhad Iran
| | - Joel Mague
- Department of Chemistry; Tulane University; New Orleans Louisiana 70118 USA
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19
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Cankař P, Jedinák L, Kryštof V, Trávníček Z. Multicomponent and Regioselective Synthesis of Dihydropyrazolo[1,5-a]pyrimidines from Aromatic Aldehydes, Meldrum’s Acid, and Aminopyrazole CAN508. HETEROCYCLES 2014. [DOI: 10.3987/com-14-13026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Hossain MI, Roulston CL, Kamaruddin MA, Chu PWY, Ng DCH, Dusting GJ, Bjorge JD, Williamson NA, Fujita DJ, Cheung SN, Chan TO, Hill AF, Cheng HC. A truncated fragment of Src protein kinase generated by calpain-mediated cleavage is a mediator of neuronal death in excitotoxicity. J Biol Chem 2013; 288:9696-9709. [PMID: 23400779 DOI: 10.1074/jbc.m112.419713] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Excitotoxicity resulting from overstimulation of glutamate receptors is a major cause of neuronal death in cerebral ischemic stroke. The overstimulated ionotropic glutamate receptors exert their neurotoxic effects in part by overactivation of calpains, which induce neuronal death by catalyzing limited proteolysis of specific cellular proteins. Here, we report that in cultured cortical neurons and in vivo in a rat model of focal ischemic stroke, the tyrosine kinase Src is cleaved by calpains at a site in the N-terminal unique domain. This generates a truncated Src fragment of ~52 kDa, which we localized predominantly to the cytosol. A cell membrane-permeable fusion peptide derived from the unique domain of Src prevents calpain from cleaving Src in neurons and protects against excitotoxic neuronal death. To explore the role of the truncated Src fragment in neuronal death, we expressed a recombinant truncated Src fragment in cultured neurons and examined how it affects neuronal survival. Expression of this fragment, which lacks the myristoylation motif and unique domain, was sufficient to induce neuronal death. Furthermore, inactivation of the prosurvival kinase Akt is a key step in its neurotoxic signaling pathway. Because Src maintains neuronal survival, our results implicate calpain cleavage as a molecular switch converting Src from a promoter of cell survival to a mediator of neuronal death in excitotoxicity. Besides unveiling a new pathological action of Src, our discovery of the neurotoxic action of the truncated Src fragment suggests new therapeutic strategies with the potential to minimize brain damage in ischemic stroke.
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Affiliation(s)
- M Iqbal Hossain
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Carli L Roulston
- O'Brien Institute, 42 Fitzroy Street, Fitzroy, Victoria 3065, Australia; Centre for Eye Research Australia, University of Melbourne, Gisborne Street, East Melbourne 3002, Australia
| | - M Aizuddin Kamaruddin
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Percy W Y Chu
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Dominic C H Ng
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Gregory J Dusting
- O'Brien Institute, 42 Fitzroy Street, Fitzroy, Victoria 3065, Australia; Centre for Eye Research Australia, University of Melbourne, Gisborne Street, East Melbourne 3002, Australia
| | - Jeffrey D Bjorge
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Calgary, Health Sciences Centre, Calgary, Alberta T2N 4N1, Canada
| | - Nicholas A Williamson
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Donald J Fujita
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Calgary, Health Sciences Centre, Calgary, Alberta T2N 4N1, Canada
| | - Steve N Cheung
- Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, Burwood, Victoria 3125, Australia
| | - Tung O Chan
- Department of Medicine, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
| | - Andrew F Hill
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Heung-Chin Cheng
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.
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21
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Hafez TS, Osman SA, Yosef HAA, El-All ASA, Hassan AS, El-Sawy AA, Abdallah MM, Youns M. Synthesis, Structural Elucidation, and In Vitro Antitumor Activities of Some Pyrazolopyrimidines and Schiff Bases Derived from 5-Amino-3-(arylamino)-1H-pyrazole-4-carboxamides. Sci Pharm 2013; 81:339-57. [PMID: 23833708 PMCID: PMC3700070 DOI: 10.3797/scipharm.1211-07] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 01/03/2013] [Indexed: 11/22/2022] Open
Abstract
The reaction of 5-amino-3-(arylamino)-1H-pyrazole-4-carboxamides 1a,b with acetylacetone 2 and arylidenemalononitriles 5a–c yielded the pyrazolo[1,5-a]-pyrimidine derivatives 4a,b and 7a–f respectively. On the other hand, Schiff bases 9a,b and 12a–j were obtained upon treatment of carboxamides 1a,b with isatin 8 and some selected aldehydes 11a–e. The newly synthesized compounds were characterized by analytical and spectroscopic data. Representative examples of the synthesized products 4a,b, 7e, 7f, 9b, 12b–f, 12h, and 12j were screened for their in vitro antitumor activities against different human cancer cell lines and the structure-activity relationship (SAR) was discussed.
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Affiliation(s)
- Taghrid S Hafez
- Department of Organometallic and Organometalloid Chemistry, National Research Centre, El-Behoos Street, Dokki, 12622 Cairo, Egypt
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22
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Hwang JY, Windisch MP, Jo S, Kim K, Kong S, Kim HC, Kim S, Kim H, Lee ME, Kim Y, Choi J, Park DS, Park E, Kwon J, Nam J, Ahn S, Cechetto J, Kim J, Liuzzi M, No Z, Lee J. Discovery and characterization of a novel 7-aminopyrazolo[1,5-a]pyrimidine analog as a potent hepatitis C virus inhibitor. Bioorg Med Chem Lett 2012; 22:7297-301. [PMID: 23159569 DOI: 10.1016/j.bmcl.2012.10.123] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 10/25/2012] [Accepted: 10/29/2012] [Indexed: 02/01/2023]
Abstract
We describe a novel 7-aminopyrazolo[1,5-a]pyrimidine (7-APP) derivative as a potent hepatitis C virus (HCV) inhibitor. A series of 7-APPs was synthesized and evaluated for inhibitory activity against HCV in different cell culture systems. The synthesis and preliminary structure-activity relationship study of 7-APP are reported.
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Affiliation(s)
- Jong Yeon Hwang
- Medicinal Chemistry 2, Institut Pasteur Korea, Sampyeong-dong 696, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Republic of Korea
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23
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One-pot synthesis of 2-alkyl-7-amino-5-aryl-pyrazolo[1,5-a]pyrimidine-6-carbonitriles via a domino three-component condensation-oxidation reaction. CR CHIM 2012. [DOI: 10.1016/j.crci.2012.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Ma YQ, Zhang ZT, He Q, Xue D, Zhang PF. Simple and Efficient Method for Synthesis of 3-Cyano-6,7-diarylpyrazolo[1,5-a]pyrimidine from Isoflavones. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.521902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Yu-Qing Ma
- a Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China
- b School of Chemistry and Materials Science, Shaanxi Normal University , Xi'an , China
| | - Zun-Ting Zhang
- a Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China
- b School of Chemistry and Materials Science, Shaanxi Normal University , Xi'an , China
| | - Qing He
- a Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China
- b School of Chemistry and Materials Science, Shaanxi Normal University , Xi'an , China
| | - Dong Xue
- a Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China
- b School of Chemistry and Materials Science, Shaanxi Normal University , Xi'an , China
| | - Peng-Fei Zhang
- a Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China
- b School of Chemistry and Materials Science, Shaanxi Normal University , Xi'an , China
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25
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Rahmati A, Alizadeh Kouzehrash M. Microwave-induced Stereoselectivity in Synthesis of trans-4-Aryl-3-methyl-6-oxo-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitriles. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201180405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Aggarwal R, Sumran G, Garg N, Aggarwal A. A regioselective synthesis of some new pyrazol-1′-ylpyrazolo[1,5-a]pyrimidines in aqueous medium and their evaluation as antimicrobial agents. Eur J Med Chem 2011; 46:3038-46. [DOI: 10.1016/j.ejmech.2011.04.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 04/13/2011] [Indexed: 10/18/2022]
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27
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Zhang ZT, Ma YQ, Liang Y, Xue D, He Q. An efficient one-pot synthesis of diarylpyrazolo[1,5-a]pyrimidine from isoflavones. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.546] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Youssef AM, Neeland EG, Villanueva EB, White MS, El-Ashmawy IM, Patrick B, Klegeris A, Abd-El-Aziz AS. Synthesis and biological evaluation of novel pyrazole compounds. Bioorg Med Chem 2010; 18:5685-96. [DOI: 10.1016/j.bmc.2010.06.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2010] [Revised: 06/04/2010] [Accepted: 06/05/2010] [Indexed: 11/24/2022]
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29
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Synthesis of 4-aryl-3-methyl-6-oxo-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitrile via a one-pot, three-component reaction. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.109] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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30
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Guo D, Klaasse E, de Vries H, Brussee J, Nalos L, Rook MB, Vos MA, van der Heyden MAG, Ijzerman AP. Exploring chemical substructures essential for HERG k(+) channel blockade by synthesis and biological evaluation of dofetilide analogues. ChemMedChem 2009; 4:1722-32. [PMID: 19725081 DOI: 10.1002/cmdc.200900203] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this study we followed a new approach to analyze molecular substructures required for hERG channel blockade. We designed and synthesized 40 analogues of dofetilide (1), a potent hERG potassium channel blocker, and established structure-activity relationships (SAR) for their interaction with this important cardiotoxicity-related off-target. Structural modifications to dofetilide were made by diversifying the substituents on the phenyl rings and the protonated nitrogen and by varying the carbon chain length. The analogues were evaluated in a radioligand binding assay and SAR data were derived with the aim to specify structural features that give rise to hERG toxicity.
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Affiliation(s)
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- Division of Medicinal Chemistry, Leiden/Amsterdam Center for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden (The Netherlands)
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31
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Manlove A, Groziak MP. Chapter 6.2: Six-Membered Ring Systems: Diazines and Benzo Derivatives. PROGRESS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0959-6380(09)70040-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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32
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Nishio M, Umezawa Y, Honda K, Tsuboyama S, Suezawa H. CH/π hydrogen bonds in organic and organometallic chemistry. CrystEngComm 2009. [DOI: 10.1039/b902318f] [Citation(s) in RCA: 481] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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33
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Regioselective synthesis of novel substituted pyrazolo[1,5-a]pyrimidines under solvent-free conditions. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.08.044] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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