1
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Ma LL, Zhou Y, Tang YX, Chen T, Wang ZH, Wu YD, Wang JG, Wu AX. I 2-DMSO-Mediated Construction of 2,3- and 2,4-Disubstituted Pyrimido[1,2- b]indazole Skeletons. J Org Chem 2024; 89:3941-3953. [PMID: 38421294 DOI: 10.1021/acs.joc.3c02761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
An efficient synthetic method for constructing 2,3- and 2,4-disubstituted pyrimidio[1,2-b]indazole skeletons through I2-DMSO-mediated and substrate-controlled regioselective [4 + 2] cyclization is reported. The reaction conditions are mild, its operation is simple, and the substrate scope is wide. More than 60 pyrimidio[1,2-b]indazole derivatives have been synthesized, providing a new methodology for constructing related molecules and potentially enriching bioactive-molecule libraries.
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Affiliation(s)
- Lin-Lin Ma
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, Guizhou 550025, P. R. China
| | - You Zhou
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yong-Xing Tang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Ting Chen
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Zheng-Hao Wang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yan-Dong Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Jun-Gang Wang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, Guizhou 550025, P. R. China
| | - An-Xin Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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2
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Prysiazhniuk K, Datsenko OP, Polishchuk O, Shulha S, Shablykin O, Nikandrova Y, Horbatok K, Bodenchuk I, Borysko P, Shepilov D, Pishel I, Kubyshkin V, Mykhailiuk PK. Spiro[3.3]heptane as a Saturated Benzene Bioisostere. Angew Chem Int Ed Engl 2024; 63:e202316557. [PMID: 38251921 DOI: 10.1002/anie.202316557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Indexed: 01/23/2024]
Abstract
The spiro[3.3]heptane core, with the non-coplanar exit vectors, was shown to be a saturated benzene bioisostere. This scaffold was incorporated into the anticancer drug sonidegib (instead of the meta-benzene), the anticancer drug vorinostat (instead of the phenyl ring), and the anesthetic drug benzocaine (instead of the para-benzene). The patent-free saturated analogs obtained showed a high potency in the corresponding biological assays.
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Affiliation(s)
| | | | | | | | - Oleh Shablykin
- Enamine Ltd., Winston Churchill Str. 78, 02094, Kyiv, Ukraine
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry NAS of Ukraine, 02094, Kyiv, Ukraine
| | | | | | | | - Petro Borysko
- Bienta, Winston Churchill Str. 78, 02094, Kyiv, Ukraine
| | | | - Iryna Pishel
- Bienta, Winston Churchill Str. 78, 02094, Kyiv, Ukraine
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3
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Tellal S, Jismy B, Hikem-Oukacha D, Abarbri M. Synthesis of Trifluoromethylated Pyrimido[1,2- b]indazole Derivatives through the Cyclocondensation of 3-Aminoindazoles with Ketoester and Their Functionalization via Suzuki-Miyaura Cross-Coupling and SN Ar Reactions. Molecules 2023; 29:44. [PMID: 38202627 PMCID: PMC10779788 DOI: 10.3390/molecules29010044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
A new series of trifluoromethylated pyrimido[1,2-b]indazol-4(1H)-one derivatives was synthesized with good to excellent yields through a simple condensation of 3-aminoindazole derivatives with ethyl 4,4,4-trifluoro 3-oxobutanoate. The functionalization of the corresponding chlorinated fused tricyclic scaffolds via Suzuki-Miyaura and aromatic nucleophilic substitution reactions led to the synthesis of highly diverse trifluoromethylated pyrimido[1,2-b]indazole derivatives with good yields.
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Affiliation(s)
- Sakina Tellal
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l’Energie (PCM2E), EA 6299, Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200 Tours, France;
- Laboratory of Physics and Chemistry Materials LPCM, Department of Chemistry, Faculty of Sciences, University Mouloud Mammeri, Tizi-Ouzou 15000, Algeria;
| | - Badr Jismy
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l’Energie (PCM2E), EA 6299, Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200 Tours, France;
| | - Djamila Hikem-Oukacha
- Laboratory of Physics and Chemistry Materials LPCM, Department of Chemistry, Faculty of Sciences, University Mouloud Mammeri, Tizi-Ouzou 15000, Algeria;
| | - Mohamed Abarbri
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l’Energie (PCM2E), EA 6299, Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200 Tours, France;
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4
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Gao Q, Guo Y, Cao P, Fan G, Xu Y. Regioselective synthesis of indazolo[2,3- a]quinazolines enabled by I 2/S-facilitated annulation relay dehydrogenative aromatization of cyclohexanones. Chem Commun (Camb) 2023; 59:13835-13838. [PMID: 37921123 DOI: 10.1039/d3cc04698b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
A method for concise and efficient synthesis of indazolo[2,3-a]quinazolines has been developed via a sequential annulation of 3-aminoindazoles and dehydrogenative aromatization of cyclohexanones. This high regioselectivity is attributed to the fact that the Mannich reaction is superior to the aldol reaction in this system. It is worth mentioning that this convenient process is successfully extended to 3-aminopyrazoles for assembling another class of medicinally prevalent pyrazolo[1,5-a]quinazolines.
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Affiliation(s)
- Qinghe Gao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China.
| | - Yimei Guo
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China.
| | - Penghui Cao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China.
| | - Guangping Fan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China.
| | - Yongtao Xu
- School of Medical Engineering, Xinxiang Key Laboratory of Biomedical Information Research, Henan International Joint Laboratory of Neural Information analysis and Drug Intelligent Design, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China.
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5
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Zhou Y, Lei SG, Wang LS, Ma JT, Yu ZC, Wu YD, Wu AX. I 2-Promoted gem-Diarylethene Involved Aza-Diels-Alder Reaction and Wagner-Meerwein Rearrangement: Construction of 2,3,4-Trisubstituted Pyrimido[1,2- b]indazole Skeletons. Org Lett 2023; 25:3386-3390. [PMID: 37154544 DOI: 10.1021/acs.orglett.3c00886] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A [3 + 1 + 2] cyclization-rearrangement reaction scheme was developed to synthesize pyrimido[1,2-b]indazoles from aryl methyl ketones, 3-aminoindazoles, and gem-diarylethenes. This metal-free process proceeds via a sequential aza-Diels-Alder reaction and Wagner-Meerwein rearrangement, and a possible reaction mechanism was demonstrated based on control experiments. This method exhibits good substrate compatibility and allows simple reaction conditions. Moreover, the products display significant aggregation-induced emission characteristics after simple modifications.
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Affiliation(s)
- You Zhou
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Shuang-Gui Lei
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Li-Sheng Wang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Jin-Tian Ma
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Zhi-Cheng Yu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
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6
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Sanad SMH, Mekky AEM. Three-component regioselective synthesis and antibacterial evaluation of new arene-linked bis(pyrazolo[1,5- a]pyrimidine) hybrids. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2191854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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7
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Jung M, Muir JE, Lindsay VNG. Expedient synthesis of spiro[3.3]heptan-1-ones via strain-relocating semipinacol rearrangements. Tetrahedron 2023; 134:133296. [PMID: 36937489 PMCID: PMC10019042 DOI: 10.1016/j.tet.2023.133296] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A novel approach for the formation of the highly strained spiro[3.3]heptan-1-one motif was developed through the reaction of 1-sulfonylcyclopropanols and lithiated 1-sulfonylbicyclo[1.1.0]butanes. Following initial nucleophilic addition to the cyclopropanone formed in situ, the resulting 1-bicyclobutylcyclopropanol intermediate is prone to a 'strain-relocating' semipinacol rearrangement in the presence of acid, directly affording the substituted spiro[3.3]heptan-1-one. The process is shown to be fully regio- and stereospecific when starting from a substituted cyclopropanone equivalent, leading to optically active 3-substituted spiro[3.3]heptan-1-ones. The reaction likely proceeds via initial protonation of the bicyclobutyl moiety followed by [1,2]-rearrangement of the resulting cyclopropylcarbinyl cation.
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Affiliation(s)
- Myunggi Jung
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Joanna E Muir
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Vincent N G Lindsay
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
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8
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Sangepu VR, Sharma D, Venkateshwarlu R, Bhoomireddy RD, Jain KK, Kapavarapu R, Dandela R, Pal M. In silico studies, sonochemical synthesis and biological evaluation of 4-substituted pyrimido[1,2-b]indazoles. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Feng G, Meng J, Xu S, Gao Y, Zhu Y, Huang Z. Copper-catalyzed cross coupling reaction of sulfonyl hydrazides with 3-aminoindazoles. RSC Adv 2022; 12:30432-30435. [PMID: 36337965 PMCID: PMC9594103 DOI: 10.1039/d2ra05956h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023] Open
Abstract
A novel Cu-catalyzed radical-radical cross coupling reaction of 3-aminoindazoles with sulfonyl hydrazides has been disclosed, enabling the production of diverse 1,3-substituted aminoindazoles in good yields. This methodology is distinguished by readily available starting materials, wide substrate scope and operational simplicity. In addition, a gram-scale reaction has been well demonstrated.
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Affiliation(s)
- Guipeng Feng
- School of Pharmacy, Xinxiang University Xinxiang 453003 P. R. China
| | - Jie Meng
- School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University Jinan 250012 P.R. China
| | - Shaohong Xu
- School of Pharmacy, Xinxiang University Xinxiang 453003 P. R. China
| | - Yao Gao
- School of Pharmacy, Xinxiang University Xinxiang 453003 P. R. China
| | - Yingying Zhu
- School of Pharmacy, Xinxiang University Xinxiang 453003 P. R. China
| | - Ziyu Huang
- School of Pharmacy, Xinxiang University Xinxiang 453003 P. R. China
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10
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Guo Y, Gao Q. Recent advances in 3-aminoindazoles as versatile synthons for the synthesis of nitrogen heterocycles. Org Biomol Chem 2022; 20:7138-7150. [PMID: 36043318 DOI: 10.1039/d2ob01348g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitrogen-based heterocycles are an important class of structural scaffolds distributed in biologically active natural products, medicinal chemistry, and agrochemicals. Hence, there is increasing interest in the development of novel synthetic strategies for the construction of these privileged structural motifs. Recently, 3-aminoindazoles have emerged as versatile synthons participating in a variety of condensation annulation, denitrogenative transannulation and rearrangement ring expansion reactions, which provide efficient synthetic routes for the formation of nitrogen heterocycles. This review systematically highlights for the first time the most recent advances in 3-aminoindazoles to provide a deep understanding of using 3-aminoindazoles as versatile synthons in organic transformations for synthetic and medicinal chemists.
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Affiliation(s)
- Yimei Guo
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China.
| | - Qinghe Gao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China.
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11
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qin Z, Ma R, Ying S, Li F, Ma Y. Synthesis of substituted pyrimido[1,2‐b]indazoles through [3+2+1] cyclization of 3‐aminoindazoles, ketones and N,N‐dimethylaminoethanol as one carbon synthon. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200707] [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)
| | | | | | - Fanzhu Li
- Zhejiang Chinese Medical University CHINA
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12
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Pan X, Liu N, Liu Y, Zhang Q, Wang K, Liu X, Zhang J. Design, synthesis, and biological evaluation of trizole-based heteroaromatic derivatives as Bcr-Abl kinase inhibitors. Eur J Med Chem 2022; 238:114425. [PMID: 35561654 DOI: 10.1016/j.ejmech.2022.114425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 01/01/2023]
Abstract
Bcr-Abl is a key driver in the pathophysiology of CML. Broadening the chemical diversity of Bcr-Abl kinase inhibitors to overcome drug resistance is a current medical demand for CML treatment. As a continuation to our research, a series of compounds with heteroaromatics-trizole scaffold as hinge binding moiety (HBM) were developed as Bcr-Abl inhibitors based on in silico modeling analysis. Biological results indicated that these compounds exhibited a significantly enhanced inhibition against Bcr-AblWT and Bcr-AblT315I in kinases assays, along with improved anti-proliferative activities in leukemia cell assays, compared with previous disclosed compounds. In particular, compounds 9f, 28c, 31, and 44c displayed comparable even better potency with that of Imatinib in enzymatic assay and cell assays including K562 cells and adriamycin-resistant K562/A cells. Moreover, compounds 9f, 28c, and 44c exhibited potent inhibition activities against K562R cells bearing T315I mutant with IC50 of 13.35 μM, 40.14 μM, and 1.91 μM, respectively, outperforming that of Imatinib. Meanwhile, the inhibition of Bcr-Abl activity in Ba/F3 cells demonstrated that these compounds exerted effects mainly by acting on Bcr-Abl. Additionally, compounds 9f, 28c, and 44c effectively induced apoptosis, arrest the cell cycle at S or G2/M phase, and inhibited phosphorylation of Bcr-Abl and STAT5 in a dose-dependent manner. Docking studies indicated that trizole indeed retained the hydrophobic interaction of aromatic heterocycles with hinge region, and ADME prediction suggested that tested compounds had a favorable safety profile. Therefore, aromatic heterocycles incorporated with trizole could serve as a promising HBM for Bcr-Abl inhibitors with proline as fexibile linker, and compounds 9f, 28c, especially 44c could be served as a starting point for further optimization.
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Affiliation(s)
- Xiaoyan Pan
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China.
| | - Nanxin Liu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Yuying Liu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Qingqing Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Kai Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Xueying Liu
- School of Pharmacy, The Fourth Military Medical University, No.169 West Changle Road, Xi'an, 710032, PR China
| | - Jie Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
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13
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Xu Z, Geng X, Cai Y, Wang L. A Straightforward Approach to Fluorinated Pyrimido[1,2- b]indazole Derivatives via Metal/Additive-Free Annulation with Enaminones, 3-Aminoindazoles, and Selectfluor. J Org Chem 2022; 87:6562-6572. [PMID: 35486919 DOI: 10.1021/acs.joc.2c00136] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel and efficient three-component reaction with two C-N bonds and one C-F bond formation has been reported, which provides a straightforward route to a variety of fluorinated pyrimido[1,2-b]indazole derivatives. This transformation has the advantage of excellent functional group compatibility, including aliphatic and aromatic substituents enaminones. Moreover, metal and additives are not necessary for this reaction, which is of great significance for the synthesis and application of fluorinated heterocycles.
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Affiliation(s)
- Zhaoliang Xu
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang, Zhejiang 318000, PR China.,Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China
| | - Xiao Geng
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang, Zhejiang 318000, PR China
| | - Yiwen Cai
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang, Zhejiang 318000, PR China
| | - Lei Wang
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang, Zhejiang 318000, PR China.,Key Laboratory of Green and Precise Synthetic Chemistry, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, PR China
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14
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Sanad SMH, Mekky AEM. 3-Aminopyrazolo[3,4-b]pyridine: Effective Precursor for Barium Hydroxide-Mediated Three Components Synthesis of New Mono- and Bis(pyrimidines) with Potential Cytotoxic Activity. Chem Biodivers 2021; 19:e202100500. [PMID: 34784450 DOI: 10.1002/cbdv.202100500] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 11/16/2021] [Indexed: 01/02/2023]
Abstract
In this study, an efficient one-pot procedure for preparing a new series of pyrazolo[3,4-b]pyridine-fused pyrimidines was described. The target hybrids were developed through a three-component reaction of 3-amino-1H-pyrazolo[3,4-b]pyridine, benzaldehydes, and acetophenones (molar ratio 1 : 1 : 1). The best conditions for the previous reaction were 2.5 equivalents of barium hydroxide in DMF at 150 °C for 6 h. New bis(pyrimidines) were synthesized in high yields using a similar one-pot reaction protocol with some modifications. Thus, two equivalents of each of the appropriate acetophenones and 3-aminopyrazolopyridine were reacted with one equivalent of the appropriate bis(aldehydes). The reaction was carried out at 150 °C for 8 h using 4.5 equivalents of barium hydroxide in DMF. Repeating the previous reaction with the appropriate bis(acetyl) derivatives and benzaldehydes resulted in good yields of the target bis(pyrimidines). The in vitro cytotoxic activity of new pyrimidines against the MCF-7, HEPG2, and Caco2 cell lines was evaluated using the reference doxorubicin (IC50 values of 4.34-6.97 μM). Hybrid 6h had the best activity against Caco2 and MCF-7 cell lines, IC50 values of 12.62 and 14.50 μM, respectively. The IC50 values for hybrids 6c, 6e, and 6f against MCF-7 and Caco2 cell lines were 23.99-41.69 and 33.14-43.33 μM, respectively. Furthermore, hybrid 6e displayed IC50 value of 20.06 μM HEPG2 cell lines, while the hybrids 6c, 6f and 6h exhibited IC50 values ranging between 26.29-50.51 μM. Furthermore, hybrid 6e had an IC50 value of 20.06 μM for the HEPG2 cell lines, whereas hybrids 6c, 6f, and 6h had IC50 values ranging from 26.29 to 50.51 μM.
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Affiliation(s)
- Sherif M H Sanad
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Ahmed E M Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
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15
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Ramle AQ, Fei CC, Tiekink ERT, Basirun WJ. Indoleninyl-substituted pyrimido[1,2- b]indazoles via a facile condensation reaction. RSC Adv 2021; 11:24647-24651. [PMID: 35481028 PMCID: PMC9036913 DOI: 10.1039/d1ra04372b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 07/05/2021] [Indexed: 01/20/2023] Open
Abstract
A new series of pyrimido[1,2-b]indazoles bearing indolenine moieties was synthesized through a simple condensation reaction with up to 94% yield. The present method features the versatile formation of a pyrimidine ring with a broad range of substrates, great functional group compatibility and facile synthetic operation. The work offers opportunities in drug development as well as in materials science.
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Affiliation(s)
- Abdul Qaiyum Ramle
- Department of Chemistry, University of Malaya Kuala Lumpur 50603 Malaysia
| | - Chee Chin Fei
- Nanotechnology and Catalysis Research Centre, University of Malaya Kuala Lumpur 50603 Malaysia
| | - Edward R T Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University Bandar Sunway Selangor Darul Ehsan 47500 Malaysia
| | - Wan Jefrey Basirun
- Department of Chemistry, University of Malaya Kuala Lumpur 50603 Malaysia
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16
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Liu X, Zhou J, Lin J, Zhang Z, Wu S, He Q, Cao H. Controllable Site-Selective Construction of 2- and 4-Substituted Pyrimido[1,2- b]indazole from 3-Aminoindazoles and Ynals. J Org Chem 2021; 86:9107-9116. [PMID: 34132097 DOI: 10.1021/acs.joc.1c01094] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A straightforward and novel controllable site-selective construction of 2- and 4-substituted pyrimido[1,2-b]indazole from 3-aminoindazoles and ynals has been developed. The high regioselectivity of this reaction could be easily switched by converting different catalytic systems. In this way, a series of 2- and 4-substituted pyrimido[1,2-b]indazole derivatives were obtained in moderate to good yields. In addition, the photophysical properties of compound 3a prepared by the present method were discussed.
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Affiliation(s)
- Xiang Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, 528458, P.R. China
| | - Jinlei Zhou
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, 528458, P.R. China
| | - Jiatong Lin
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, 528458, P.R. China
| | - Zemin Zhang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, 528458, P.R. China
| | - Suying Wu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, 528458, P.R. China
| | - Qiuxing He
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, 528458, P.R. China
| | - Hua Cao
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, 528458, P.R. China
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17
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Pyrimido[1,2- a]benzimidazoles: synthesis and perspective of their pharmacological use. Chem Heterocycl Compd (N Y) 2021; 57:383-409. [PMID: 34024913 PMCID: PMC8121645 DOI: 10.1007/s10593-021-02916-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/12/2021] [Indexed: 01/26/2023]
Abstract
The review presents data on the synthesis as well as studies of biological activity of new derivatives of pyrimido[1,2-a]benzimidazoles published over the last decade. The bibliography of the review includes 136 sources.
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18
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Wang QL, Zhou Q, Liao J, Chen Z, Xiong BQ, Deng GJ, Tang KW, Liu Y. Cu-Catalyzed Oxidative Dual Arylation of Active Alkenes: Preparation of Cyanoarylated Oxindoles through Denitrogenation of 3-Aminoindazoles. J Org Chem 2021; 86:2866-2875. [PMID: 33467855 DOI: 10.1021/acs.joc.0c02798] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel and mild Cu-catalyzed oxidative dual arylation of carbon-carbon double bonds in acrylamides with 3-aminoindazoles is proposed for the synthesis of cyanoarylated oxindoles. Notably, 3-aminoindazoles are employed as efficient arylating agents via the cleavage of two C-N bonds. This oxidative dual arylation of active alkenes involves a radical process and undergoes a sequence of 3-aminoindazole oxidation, two-C-N-bond cleavage, cyanoaryl radical addition, and intramolecular cyclization.
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Affiliation(s)
- Qiao-Lin Wang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.,Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Quan Zhou
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Jia Liao
- Technical Center of Gongbei Customs, No. 501, Yinhua Road, Xiangzhou District, Zhuhai, Guangdong 519000, China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.,Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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19
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Mekky AEM, Ahmed MSM, Sanad SMH, Abdallah ZA. Bis(benzofuran-enaminone) hybrid possessing piperazine linker: Versatile precursor for microwave assisted synthesis of bis(pyrido[2',3':3,4]pyrazolo[1,5-a]pyrimidines). SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2020.1867745] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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20
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Jismy B, El Qami A, Pišlar A, Frlan R, Kos J, Gobec S, Knez D, Abarbri M. Pyrimido[1,2-b]indazole derivatives: Selective inhibitors of human monoamine oxidase B with neuroprotective activity. Eur J Med Chem 2020; 209:112911. [PMID: 33071056 DOI: 10.1016/j.ejmech.2020.112911] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/28/2020] [Accepted: 10/03/2020] [Indexed: 10/23/2022]
Abstract
Structurally diverse heterotricyclic compounds are recognized as monoamine oxidase (MAO) inhibitors and thus represent an appealing scaffold in development and optimization of novel MAO inhibitors. Herein we explored the chemical space of pyrimido[1,2-b]indazoles as MAO inhibitors by preparing a small library of (hetero)aryl derivatives. An efficient synthetic strategy was developed starting from commercially available 1H-indazol-3-amines, which were converted to various 3-bromoheterotricyclic derivatives and further functionalized via Suzuki-Miyaura coupling reaction. Derivatives 4a-t selectively inhibited human MAO-B isoform in a reversible and competitive manner as confirmed by kinetic experiments and docking studies. Selected derivatives were not cytotoxic to neuroblastoma SH-SY5Y cells. Moreover, analogue 4i protected human neuroblastoma SH-SY5Y cells against 6-hydroxydopamine-induced cell death, which confirms the applicability of the pyrimido[1,2-b]indazoles as potential antiparkinsonian agents.
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Affiliation(s)
- Badr Jismy
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour L'Energie (PCM2E), EA 6299. Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200, Tours, France
| | - Abdelkarim El Qami
- Département de Chimie Université Hassan II de Casablanca, Laboratoire de Chimie Physique et de Chimie Bioorganique, URAC 22, BP 146, 28800, Mohammedia, Morocco
| | - Anja Pišlar
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000, Ljubljana, Slovenia
| | - Rok Frlan
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000, Ljubljana, Slovenia
| | - Janko Kos
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000, Ljubljana, Slovenia; Department of Biotechnology, Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Stanislav Gobec
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000, Ljubljana, Slovenia
| | - Damijan Knez
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000, Ljubljana, Slovenia.
| | - Mohamed Abarbri
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour L'Energie (PCM2E), EA 6299. Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200, Tours, France.
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21
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Zhou Y, Wang Y, Song Z, Nakano T, Song Q. Cu-catalyzed C–N bond cleavage of 3-aminoindazoles for the C–H arylation of enamines. Org Chem Front 2020. [DOI: 10.1039/c9qo01177c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We have presented a novel Cu-catalyzed stereoselective C–H arylation of enamines by using 3-aminoindazoles arylating agents via oxidative cleavage of two C–N bonds.
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Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Ya Wang
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Zhiyi Song
- Institute for Catalysis (ICAT)
- Hokkaido university
- Sapporo 001-0021
- Japan
| | - Tamaki Nakano
- Institute for Catalysis (ICAT)
- Hokkaido university
- Sapporo 001-0021
- Japan
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
- Fujian University Key Laboratory of Molecule Synthesis and Function Discovery
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22
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Zhou Y, Lin L, Wang Y, Zhu J, Song Q. Cu-Catalyzed Aromatic Metamorphosis of 3-Aminoindazoles. Org Lett 2019; 21:7630-7634. [PMID: 31503499 DOI: 10.1021/acs.orglett.9b02933] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We present a novel Cu-catalyzed aromatic metamorphosis of 3-aminoindazoles via oxidative cleavage of two C-N bonds of 3-aminoindazoles. This unprecedented reactivity of 3-aminoindazoles allows one to forge diverse nitrile-containing triphenylenes in decent yields via generation of the cyano group in situ. The current study reveals that 3-aminoindazoles could be harnessed as radical precursors via oxidative denitrogenation, the reaction mechanism of which was supported by density functional theory calculations.
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Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation , College of Materials Science & Engineering at Huaqiao University , 668 Jimei Blvd. , Xiamen , Fujian 361021 , People's Republic of China
| | - Lu Lin
- College of Chemistry and Chemical Engineering at Xiamen University , Xiamen , Fujian 361005 , People's Republic of China
| | - Ya Wang
- Institute of Next Generation Matter Transformation , College of Materials Science & Engineering at Huaqiao University , 668 Jimei Blvd. , Xiamen , Fujian 361021 , People's Republic of China
| | - Jun Zhu
- College of Chemistry and Chemical Engineering at Xiamen University , Xiamen , Fujian 361005 , People's Republic of China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation , College of Materials Science & Engineering at Huaqiao University , 668 Jimei Blvd. , Xiamen , Fujian 361021 , People's Republic of China.,Key Laboratory of Molecule Synthesis and Function Discovery , College of Chemistry at Fuzhou University , Fuzhou , Fujian 350108 , People's Republic of China
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23
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Pan X, Liang L, Sun Y, Si R, Zhang Q, Wang J, Fu J, Zhang J, Zhang J. Discovery of novel Bcr-Abl T315I inhibitors with flexible linker. Part 1: Confirmation optimization of phenyl-1H-indazol-3-amine as hinge binding moiety. Eur J Med Chem 2019; 178:232-242. [PMID: 31185413 DOI: 10.1016/j.ejmech.2019.05.091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/28/2019] [Accepted: 05/31/2019] [Indexed: 11/28/2022]
Abstract
As a continuation to our research, a series of novel Bcr-Abl inhibitors incorporated with 6-phenyl-1H-indazol-3-amine as hinge binding moiety (HBM) were developed based on confirmation analysis. Biological results indicated that these compounds exhibited an enhanced inhibition against Bcr-AblWT and Bcr-AblT315I in kinases assays, along with improved anti-proliferative activities in K562 cell assays. In particular, compound Y9 displayed comparable potency with that of imatinib. It potently inhibited Bcr-AblWT and Bcr-AblT315I kinases with IC50 of 0.043 μM and 0.17 μM, respectively. Furthermore, compound Y9 inhibited the proliferation of K562 and K562R cells with IC50 of 1.65 μM and 5.42 μM, respectively. Therefore, 6-phenyl-1H-indazol-3amine as HBM, combined with flexible linker, is a successful strategy contribute to research on T315I mutant resistance, and compound Y9 could be served as a starting point for further optimization.
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Affiliation(s)
- Xiaoyan Pan
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Liyuan Liang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Ying Sun
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Ru Si
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Qingqing Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Jin Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Jia Fu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Junjie Zhang
- School of Science, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jie Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, China.
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24
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Zhou Y, Wang Y, Lou Y, Song Q. Cu-Catalyzed Denitrogenative Transannulation of 3-Aminoindazoles To Assemble 1-Aminoisoquinolines and 3-Aminobenzothiophenes. Org Lett 2019; 21:8869-8873. [DOI: 10.1021/acs.orglett.9b02288] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Ya Wang
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Yixian Lou
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310000, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310000, China
- Fujian University Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
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25
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Gao Q, Han X, Tong P, Zhang Z, Shen H, Guo Y, Bai S. Aerobic α,β-C(sp3)–H Bond Difunctionalization and C–N Bond Cleavage of Triethylamine: Difunctional Ammonium Iodide Enabling the Regioselective Synthesis of 4-Arylpyrimido[1,2-b]indazoles. Org Lett 2019; 21:6074-6078. [DOI: 10.1021/acs.orglett.9b02218] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Qinghe Gao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Xinya Han
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, P. R. China
| | - Peiyuan Tong
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Zhiang Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Haotian Shen
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Yanrong Guo
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, P. R. China
| | - Suping Bai
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
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26
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Zhou Y, Wang Y, Lou Y, Song Q. Facile synthesis of 1,2-thiobenzonitriles via Cu-catalyzed denitrogenative radical coupling reaction. Chem Commun (Camb) 2019; 55:10265-10268. [DOI: 10.1039/c9cc05099j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The first example of denitrogenative radical coupling with 3-aminoindazoles is presented. A diverse array of 1,2-thiobenzonitriles were obtained in good yields with wide substrate scope via oxidative C–N cleavage of 3-aminoindazoles.
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Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering and College of Materials Science Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Ya Wang
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering and College of Materials Science Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Yixian Lou
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- Zhejiang University of Technology
- Hangzhou
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering and College of Materials Science Engineering at Huaqiao University
- Xiamen
- P. R. China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
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27
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Wang G, Sun J, Wang K, Han J, Li H, Duan G, You G, Li F, Xia C. Palladium-catalyzed direct C–H nitration and intramolecular C–H functionalization for the synthesis of 3-nitro-1-(phenylsulfonyl)-1H-indazole derivatives. Org Chem Front 2019. [DOI: 10.1039/c9qo00367c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Various 3-nitro-1-(phenylsulfonyl)-1H-indazole derivatives have been obtained in moderate to high yields using palladium catalysis.
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Affiliation(s)
- Guodong Wang
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Jian Sun
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Kai Wang
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Junfen Han
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Hongshuang Li
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Guiyun Duan
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Guirong You
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Furong Li
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
| | - Chengcai Xia
- Pharmacy College
- Taishan Medical University
- Tai'an 271016
- China
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28
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Zhou Y, Lou Y, Wang Y, Song Q. Oxidant-controlled divergent transformations of 3-aminoindazoles for the synthesis of pyrimido[1,2-b]-indazoles and aromatic nitrile-derived dithioacetals. Org Chem Front 2019. [DOI: 10.1039/c9qo00847k] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An oxidant-controlled divergent reactivity of 3-aminoindazoles is presented, which enables the [3 + 3] annulation and C–H arylation of ketene dithioacetals in disparate pathways to assemble pyrimido[1,2-b]-indazoles and aromatic nitrile-derived dithioacetals.
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Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- PR China
| | - Yixian Lou
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- Zhejiang University of Technology
- Hangzhou
- 310000 PR China
| | - Ya Wang
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- PR China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- PR China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
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29
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Krishnammagari SK, Cho BG, Kim JT, Jeong YT. An efficient and solvent-free one-pot multi-component synthesis of novel highly substituted pyrido[2′,3′:3,4]pyrazolo[1,5-a]pyrimidine-3-carbonitrile derivatives catalyzed by tetramethylguanidine. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1514053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Byung Gwon Cho
- Department of Image Science and Engineering, Pukyong National University, Busan, Republic of Korea
| | - Jong Tae Kim
- Department of Image Science and Engineering, Pukyong National University, Busan, Republic of Korea
| | - Yeon Tae Jeong
- Department of Image Science and Engineering, Pukyong National University, Busan, Republic of Korea
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30
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Zhou Y, Wang Y, Lou Y, Song Q. Oxidative Rearrangement of 3-Aminoindazoles for the Construction of 1,2,3-Benzotriazine-4(3H)-ones at Ambient Temperature. Org Lett 2018; 20:6494-6497. [DOI: 10.1021/acs.orglett.8b02813] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, College of Material Sciences Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, P.R. China
| | - Ya Wang
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, College of Material Sciences Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, P.R. China
| | - Yixian Lou
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310000, P.R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, College of Material Sciences Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, P.R. China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310000, P.R. China
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31
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Zhou Y, Song Q. Oxidative ring-opening of 3-aminoindazoles for the synthesis of 2-aminobenzoates. Org Chem Front 2018. [DOI: 10.1039/c8qo00872h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A novel oxidative ring-opening of 3-aminoindazoles based on N–N bond cleavage was developed, in which various 2-aminobenzoates were obtained in good yields under mild conditions.
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Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
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32
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Tran PH, Thi Bui TP, Bach Lam XQ, Thi Nguyen XT. Synthesis of benzo[4,5]imidazo[1,2-a]pyrimidines and 2,3-dihydroquinazolin-4(1H)-ones under metal-free and solvent-free conditions for minimizing waste generation. RSC Adv 2018; 8:36392-36399. [PMID: 35558474 PMCID: PMC9088831 DOI: 10.1039/c8ra07256f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 10/12/2018] [Indexed: 12/16/2022] Open
Abstract
Brønsted acidic ionic liquid was found to be an efficient and recyclable catalyst for the synthesis of benzo[4,5]imidazo[1,2-a]pyrimidines and 2,3-dihydroquinazolin-4(1H)-ones. The reactions proceeded smoothly with a broad scope of substrates providing the expected products in good to excellent yields under an atom-economical pathway. The low-cost recyclable catalyst, metal- and solvent-free conditions, and the ease of product isolation are the highlighted advantages in solving the issue of trace metal contamination in synthesized pharmaceuticals. A facile, efficient, and atom-economic method for preparing benzo[4,5]imidazo[1,2-a]pyrimidines and 2,3-dihydroquinazolin-4(1H)-ones under metal- and solvent-free condition has been developed.![]()
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Affiliation(s)
- Phuong Hoang Tran
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Science
- Viet Nam National University
- Ho Chi Minh City 721337
| | - Thanh-Phuong Thi Bui
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Science
- Viet Nam National University
- Ho Chi Minh City 721337
| | - Xuan-Quynh Bach Lam
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Science
- Viet Nam National University
- Ho Chi Minh City 721337
| | - Xuan-Trang Thi Nguyen
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Science
- Viet Nam National University
- Ho Chi Minh City 721337
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