1
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Wang JJ, Tang L, Xiao Y, Wu WB, Wang G, Feng JJ. Switching between the [2π+2σ] and Hetero-[4π+2σ] Cycloaddition Reactivity of Bicyclobutanes with Lewis Acid Catalysts Enables the Synthesis of Spirocycles and Bridged Heterocycles. Angew Chem Int Ed Engl 2024; 63:e202405222. [PMID: 38729920 DOI: 10.1002/anie.202405222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/01/2024] [Accepted: 05/10/2024] [Indexed: 05/12/2024]
Abstract
The exploration of the complex chemical diversity of bicyclo[n.1.1]alkanes and their use as benzene bioisosteres has garnered significant attention over the past two decades. Regiodivergent syntheses of thiabicyclo[4.1.1]octanes (S-BCOs) and highly substituted bicyclo[2.1.1]hexanes (BCHs) using a Lewis acid-catalyzed formal cycloaddition of bicyclobutanes (BCBs) and 3-benzylideneindoline-2-thione derivatives have been established. The first hetero-(4+3) cycloaddition of BCBs, catalyzed by Zn(OTf)2, was achieved with a broad substrate scope under mild conditions. In contrast, the less electrophilic BCB ester undergoes a Sc(OTf)3-catalyzed [2π+2σ] reaction with 1,1,2-trisubstituted alkenes, yielding BCHs with a spirocyclic quaternary carbon center. Control experiments and preliminary theoretical calculations suggest that the diastereoselective [2π+2σ] product formation may involve a concerted cycloaddition between a zwitterionic intermediate and E-1,1,2-trisubstituted alkenes. Additionally, the hetero-(4+3) cycloaddition may involve a concerted nucleophilic ring-opening mechanism.
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Affiliation(s)
- Ji-Jie Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Lei Tang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Yuanjiu Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Wen-Biao Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Guoqiang Wang
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Jian-Jun Feng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
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2
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Hong K, Liu M, Qian L, Bao M, Chen G, Jiang X, Huang J, Xu X. Catalytic [4+2]- and [4+4]-cycloaddition using furan-fused cyclobutanone as a privileged C4 synthon. Nat Commun 2024; 15:5407. [PMID: 38926359 PMCID: PMC11208666 DOI: 10.1038/s41467-024-49664-5] [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: 02/01/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Cycloaddition reactions play a pivotal role in synthetic chemistry for the direct assembly of cyclic architectures. However, hurdles remain for extending the C4 synthon to construct diverse heterocycles via programmable [4+n]-cycloaddition. Here we report an atom-economic and modular intermolecular cycloaddition using furan-fused cyclobutanones (FCBs) as a versatile C4 synthon. In contrast to the well-documented cycloaddition of benzocyclobutenones, this is a complementary version using FCB as a C4 reagent. It involves a C-C bond activation and cycloaddition sequence, including a Rh-catalyzed enantioselective [4 + 2]-cycloaddition with imines and an Au-catalyzed diastereoselective [4 + 4]-cycloaddition with anthranils. The obtained furan-fused lactams, which are pivotal motifs that present in many natural products, bioactive molecules, and materials, are inaccessible or difficult to prepare by other methods. Preliminary antitumor activity study indicates that 6e and 6 f exhibit high anticancer potency against colon cancer cells (HCT-116, IC50 = 0.50 ± 0.05 μM) and esophageal squamous cell carcinoma cells (KYSE-520, IC50 = 0.89 ± 0.13 μM), respectively.
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Affiliation(s)
- Kemiao Hong
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Mengting Liu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Lixin Qian
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Ming Bao
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Gang Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Xinyu Jiang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Jingjing Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Xinfang Xu
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
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3
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Huang Y, Li X, Mai BK, Tonogai EJ, Smith AJ, Hergenrother PJ, Liu P, Hoveyda AH. A catalytic process enables efficient and programmable access to precisely altered indole alkaloid scaffolds. Nat Chem 2024; 16:1003-1014. [PMID: 38374457 DOI: 10.1038/s41557-024-01455-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 01/18/2024] [Indexed: 02/21/2024]
Abstract
A compound's overall contour impacts its ability to elicit biological response, rendering access to distinctly shaped molecules desirable. A natural product's framework can be modified, but only if it is abundant and contains suitably modifiable functional groups. Here we introduce a programmable strategy for concise synthesis of precisely altered scaffolds of scarce bridged polycyclic alkaloids. Central to our approach is a scalable catalytic multi-component process that delivers diastereo- and enantiomerically enriched tertiary homoallylic alcohols bearing differentiable alkenyl moieties. We used one product to launch progressively divergent syntheses of a naturally occurring alkaloid and its precisely expanded, contracted and/or distorted framework analogues (average number of steps/scaffold of seven). In vitro testing showed that a skeleton expanded by one methylene in two regions is cytotoxic against four types of cancer cell line. Mechanistic and computational studies offer an account for several unanticipated selectivity trends.
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Affiliation(s)
- Youming Huang
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, Strasbourg, France
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Xinghan Li
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, Strasbourg, France
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Binh Khanh Mai
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Emily J Tonogai
- Department of Chemistry, Carl Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Amanda J Smith
- Department of Chemistry, Carl Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA
| | - Paul J Hergenrother
- Department of Chemistry, Carl Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, USA.
- Cancer Center at Illinois, University of Illinois, Urbana, IL, USA.
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Amir H Hoveyda
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, Strasbourg, France.
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA.
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4
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Chen YX, Wu S, Shen X, Xu DF, Wang Q, Ji SH, Zhu H, Wu G, Sheng C, Cai YR. Two-Phase Electrosynthesis of Dihydroxycoumestans: Discovery of a New Scaffold for Topoisomerase I Poison. Chemistry 2024:e202401400. [PMID: 38736421 DOI: 10.1002/chem.202401400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/09/2024] [Accepted: 05/13/2024] [Indexed: 05/14/2024]
Abstract
Coumestan represents a biologically relevant structural motif distributed in a number of natural products, and the rapid construction of related derivatives as well as the characterization of targets would accelerate lead compound discovery in medicinal chemistry. In this work, a general and scalable approach to 8,9-dihydroxycoumestans via two-electrode constant current electrolysis was developed. The application of a two-phase (aqueous/organic) system plays a crucial role for success, protecting the sensitive o-benzoquinone intermediates from over-oxidation. Based on the structurally diverse products, a primary SAR study on coumestan scaffold was completed, and compound 3 r exhibited potent antiproliferative activities and a robust topoisomerase I (Top1) inhibitory activity. Further mechanism studies demonstrates that compound 3 r was a novel Top1 poison, which might open an avenue for the development of Top1-targeted antitumor agent.
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Affiliation(s)
- Yue-Xi Chen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Shanchao Wu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Xiang Shen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Dong-Fang Xu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Qian Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Su-Hui Ji
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Huajian Zhu
- Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province, School of Medicine, Hangzhou City University, Hangzhou, 310015, Zhejiang Province, China
| | - Ge Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Yun-Rui Cai
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
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5
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Nguyen TT, Navarro A, Ruble JC, Davies HML. Stereoselective Synthesis of Either Exo- or Endo-3-Azabicyclo[3.1.0]hexane-6-carboxylates by Dirhodium(II)-Catalyzed Cyclopropanation with Ethyl Diazoacetate under Low Catalyst Loadings. Org Lett 2024; 26:2832-2836. [PMID: 38166395 PMCID: PMC11020159 DOI: 10.1021/acs.orglett.3c03652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/01/2023] [Accepted: 12/01/2023] [Indexed: 01/04/2024]
Abstract
Although cyclopropanation with donor/acceptor carbenes can be conducted under low catalyst loadings (<0.001 mol %), such low loading has not been generally effective for other classes of carbenes such as acceptor carbenes. In this current study, we demonstrate that ethyl diazoacetate can be effectively used in the cyclopropanation of N-Boc-2,5-dihydropyrrole with dirhodium(II) catalyst loadings of 0.005 mol %. By appropriate choice of catalyst and hydrolysis conditions, either the exo- or endo-3-azabicyclo[3.1.0]hexanes can be formed cleanly with high levels of diastereoselectivity with no chromatographic purification.
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Affiliation(s)
| | - Antonio Navarro
- Lilly
Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - J. Craig Ruble
- Lilly
Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Huw M. L. Davies
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
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6
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Liu W, Li W, Xu W, Wang M, Kong W. Nickel-catalyzed switchable arylative/endo-cyclization of 1,6-enynes. Nat Commun 2024; 15:2914. [PMID: 38575585 PMCID: PMC10995176 DOI: 10.1038/s41467-024-47200-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 01/16/2024] [Indexed: 04/06/2024] Open
Abstract
Carbo- and heterocycles are frequently used as crucial scaffolds in natural products, fine chemicals, and biologically and pharmaceutically active compounds. Transition-metal-catalyzed cyclization of 1,6-enynes has emerged as a powerful strategy for constructing functionalized carbo- and heterocycles. Despite significant progress, the regioselectivity of alkyne functionalization is entirely substrate-dependent. And only exo-cyclization/cross-coupling products can be obtained, while endo-selective cyclization/cross-coupling remains elusive and still poses a formidable challenge. In this study, we disclose a nickel-catalyzed switchable arylation/cyclization of 1,6-enynes in which the nature of the ligand dictates the regioselectivity of alkyne arylation, while the electrophilic trapping reagents determine the selectivity of the cyclization mode. Specifically, using a commercially available 1,10-phenanthroline as a ligand facilitates trans-arylation/cyclization to obtain seven-membered ring products, while a 2-naphthyl-substituted bisbox ligand promotes cis-arylation/cyclization to access six-membered ring products. Diastereoselective cyclizations have also been developed for the synthesis of enantioenriched piperidines and azepanes, which are core structural elements of pharmaceuticals and natural products possessing important biological activities. Furthermore, experimental and density functional theory studies reveal that the regioselectivity of the alkyne arylation process is entirely controlled by the steric hindrance of the ligand; the reaction mechanism involves exo-cyclization followed by Dowd-Beckwith-type ring expansion to form endo-cyclization products.
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Affiliation(s)
- Wenfeng Liu
- The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, China
| | - Wei Li
- The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, China
| | - Weipeng Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
| | - Wangqing Kong
- The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, China.
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7
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Lee H, Kim J, Koh M. Medium-Sized Ring Expansion Strategies: Enhancing Small-Molecule Library Development. Molecules 2024; 29:1562. [PMID: 38611841 PMCID: PMC11013129 DOI: 10.3390/molecules29071562] [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: 03/11/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
The construction of a small molecule library that includes compounds with medium-sized rings is increasingly essential in drug discovery. These compounds are essential for identifying novel therapeutic agents capable of targeting "undruggable" targets through high-throughput and high-content screening, given their structural complexity and diversity. However, synthesizing medium-sized rings presents notable challenges, particularly with direct cyclization methods, due to issues such as transannular strain and reduced degrees of freedom. This review presents an overview of current strategies in synthesizing medium-sized rings, emphasizing innovative approaches like ring-expansion reactions. It highlights the challenges of synthesis and the potential of these compounds to diversify the chemical space for drug discovery, underscoring the importance of medium-sized rings in developing new bioactive compounds.
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Affiliation(s)
- Hwiyeong Lee
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea;
| | - Jonghoon Kim
- Department of Chemistry and Integrative Institute of Basic Science, Soongsil University, Seoul 06978, Republic of Korea;
| | - Minseob Koh
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea;
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8
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Jiang T, Wang Z, Yu W, Wang J, Yu S, Bao X, Wei B, Xuan Q. Mix-Key: graph mixup with key structures for molecular property prediction. Brief Bioinform 2024; 25:bbae165. [PMID: 38706318 PMCID: PMC11070654 DOI: 10.1093/bib/bbae165] [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: 11/09/2023] [Revised: 02/21/2024] [Accepted: 04/04/2024] [Indexed: 05/07/2024] Open
Abstract
Molecular property prediction faces the challenge of limited labeled data as it necessitates a series of specialized experiments to annotate target molecules. Data augmentation techniques can effectively address the issue of data scarcity. In recent years, Mixup has achieved significant success in traditional domains such as image processing. However, its application in molecular property prediction is relatively limited due to the irregular, non-Euclidean nature of graphs and the fact that minor variations in molecular structures can lead to alterations in their properties. To address these challenges, we propose a novel data augmentation method called Mix-Key tailored for molecular property prediction. Mix-Key aims to capture crucial features of molecular graphs, focusing separately on the molecular scaffolds and functional groups. By generating isomers that are relatively invariant to the scaffolds or functional groups, we effectively preserve the core information of molecules. Additionally, to capture interactive information between the scaffolds and functional groups while ensuring correlation between the original and augmented graphs, we introduce molecular fingerprint similarity and node similarity. Through these steps, Mix-Key determines the mixup ratio between the original graph and two isomers, thus generating more informative augmented molecular graphs. We extensively validate our approach on molecular datasets of different scales with several Graph Neural Network architectures. The results demonstrate that Mix-Key consistently outperforms other data augmentation methods in enhancing molecular property prediction on several datasets.
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Affiliation(s)
- Tianyi Jiang
- Institute of Cyberspace Security, College of Information Engineering, Zhejiang University of Technology, 310023, Hangzhou, China
- Binjiang Institute of Artificial Intelligence, Zhejiang University of Technology, 310056, Hangzhou, China
| | - Zeyu Wang
- Institute of Cyberspace Security, College of Information Engineering, Zhejiang University of Technology, 310023, Hangzhou, China
- Binjiang Institute of Artificial Intelligence, Zhejiang University of Technology, 310056, Hangzhou, China
| | - Wenchao Yu
- the College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 310014, Hangzhou, China
| | - Jinhuan Wang
- Institute of Cyberspace Security, College of Information Engineering, Zhejiang University of Technology, 310023, Hangzhou, China
- Binjiang Institute of Artificial Intelligence, Zhejiang University of Technology, 310056, Hangzhou, China
| | - Shanqing Yu
- Institute of Cyberspace Security, College of Information Engineering, Zhejiang University of Technology, 310023, Hangzhou, China
- Binjiang Institute of Artificial Intelligence, Zhejiang University of Technology, 310056, Hangzhou, China
| | - Xiaoze Bao
- the College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 310014, Hangzhou, China
| | - Bin Wei
- the College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 310014, Hangzhou, China
| | - Qi Xuan
- Institute of Cyberspace Security, College of Information Engineering, Zhejiang University of Technology, 310023, Hangzhou, China
- Binjiang Institute of Artificial Intelligence, Zhejiang University of Technology, 310056, Hangzhou, China
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9
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Ohno I, Kanemoto K, Furuya S, Suzuki Y, Fukuzawa SI. Construction of Diverse Pyrrolidine-Based Skeletons through the Ag-Catalyzed Stereoselective Addition-Elimination Reaction of Azomethine Ylides with Nitroallyl Acetates. Org Lett 2024; 26:1880-1885. [PMID: 38417450 DOI: 10.1021/acs.orglett.4c00184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
Because scaffold diversity has a pronounced impact on biological screening, the efficient and expedient construction of skeletally diverse compound collections is a fundamental demand in drug discovery. In this regard, we report here an asymmetric tandem conjugate addition-elimination reaction of pyrroline esters with nitroallyl acetates and its application to the construction of various types of fused or spirocyclic pyrrolidines. A AgOAc/(R,Sp)-ThioClickFerrophos (TCF) catalyst efficiently promotes the addition-elimination reaction, setting vicinal chiral stereocenters featuring a tetrasubstituted carbon with excellent enantio- and diastereoselectivity while leaving the versatile nitroolefin moiety. The broad substrate scope of this reaction and the transformability of the resulting nitroolefin, imine, and ester moieties allow for the construction of diverse pyrrolidine-based fused or spiro bicyclic skeletons in optically active forms by various intramolecular cyclization processes.
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Affiliation(s)
- Itsuki Ohno
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Kazuya Kanemoto
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Shohei Furuya
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Yuko Suzuki
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Shin-Ichi Fukuzawa
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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10
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Pan J, Ho TO, Chen YC, Yang BM, Zhao Y. Enantioselective Construction of Eight-Membered N-Heterocycles from Simple 1,3-Dienes via Pd(0) Lewis Base Catalysis. Angew Chem Int Ed Engl 2024; 63:e202317703. [PMID: 38100515 DOI: 10.1002/anie.202317703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 12/17/2023]
Abstract
We report herein an unprecedented enantioselective (4+4) cycloaddition of simple 1,3-dienes with azadienes for the construction of fused eight-membered N-heterocycles. In this transformation, the π-Lewis basic Pd(0) catalyst achieves activation of 1,3-dienes to induce nucleophilic addition to azadienes followed by ring cyclization via a selective terminal allylic substitution. Furthermore, highly efficient and diastereoselective derivatizations of the eight-membered rings provide a facile access to diverse enantiopure fused tetra- to hexacyclic compounds with potential application in medicinal chemistry.
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Affiliation(s)
- Jiaoting Pan
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City, Fuzhou, 350207, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Takumi Ogawa Ho
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Bin-Miao Yang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City, Fuzhou, 350207, China
| | - Yu Zhao
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City, Fuzhou, 350207, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
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11
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Vinod A, Mouli HMC, Pal P, Myrsing E, Naik VY, Ghosh H, Jana A. Sustainable Synthesis of Indole-Substituted Densely Functionalized Pyrrole. J Org Chem 2024; 89:1407-1416. [PMID: 38198637 DOI: 10.1021/acs.joc.3c01871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
A novel chromatography- and catalyst-free methodology has been developed for the synthesis of poly substituted pyrrole in good yields via a multicomponent reaction of arylglyoxal, 1,3-dicarbonyl, indole, and aromatic amine. This strategy provides various advantages such as simple experimental and workup procedures, mild reaction conditions, no added catalyst, use of green solvent, and simple purification procedure of pure product without using column chromatography. This green method offers a simple and highly effective strategy to synthesize a wide range of indole-pyrrole conjugates in a one-pot operation.
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Affiliation(s)
- Adithya Vinod
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER) - Hajipur, Hajipur, Bihar, 844102, India
| | - H M Chandra Mouli
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER) - Hajipur, Hajipur, Bihar, 844102, India
| | - Poulomi Pal
- Department of Chemistry, Surendranath College, Kolkata, 700009, India
| | - Efficiency Myrsing
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER) - Hajipur, Hajipur, Bihar, 844102, India
| | - Vamkudoth Yaswanth Naik
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER) - Hajipur, Hajipur, Bihar, 844102, India
| | - Harisadhan Ghosh
- Department of Chemistry, Surendranath College, Kolkata, 700009, India
| | - Anupam Jana
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER) - Hajipur, Hajipur, Bihar, 844102, India
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12
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Adesina A, Skouta R. Diversity-Orientated Synthesis and Biological Properties of Compounds Based on the N-Phenylquinoneimine Scaffold. Molecules 2024; 29:249. [PMID: 38202832 PMCID: PMC10780808 DOI: 10.3390/molecules29010249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 12/30/2023] [Accepted: 01/01/2024] [Indexed: 01/12/2024] Open
Abstract
The N-phenylquinoneimine scaffold is a versatile synthetic platform that has gained significant attention in the field of drug discovery due to its structural diversity and capacity to interact with biologically relevant targets. This review explores established synthetic methodologies and highlights the significant biological activities exhibited by compounds derived from this scaffold, their implications for medicinal chemistry, and the development of novel therapeutics.
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Affiliation(s)
- Adebimpe Adesina
- Department of Chemistry, Federal University of Agriculture, Abeokuta 111101, Nigeria;
| | - Rachid Skouta
- Department of Biology, University of Massachusetts, Amherst, MA 01003, USA
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA
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13
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Wang B, Singh J, Deng Y. Photoredox-Catalyzed Divergent Radical Cascade Annulations of 1,6-Enynes via Pyridine N-Oxide-Promoted Vinyl Radical Generation. Org Lett 2023; 25:9219-9224. [PMID: 38112553 PMCID: PMC10842598 DOI: 10.1021/acs.orglett.3c03930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The divergent organophotoredox-catalyzed radical cascade annulation reactions of 1,6-enynes were developed. A series of cyclopropane-fused hetero- and carbo-bicyclic, tricyclic, and spiro-tetracyclic compounds were facilely synthesized from a broad scope of 1,6-enynes and 2,6-lutidine N-oxide under mild and metal-free conditions with blue light-emitting diode light irradiation. The cascade annulation reaction occurs with the intermediacy of a β-oxyvinyl radical, which is produced from photocatalytically generated pyridine N-oxy radical addition to the carbon-carbon triple bond.
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Affiliation(s)
- Ban Wang
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202, United States
| | - Jujhar Singh
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202, United States
| | - Yongming Deng
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202, United States
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14
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Wang Z, Luo W, Li ZW, Yin K, Wei M, Li L. Synthesis of Bench-stable Polycyclic Organophosphorus Heterocycles via Staudinger-type Annulations of ortho-Azidophenols. Chemistry 2023:e202302834. [PMID: 38141178 DOI: 10.1002/chem.202302834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 12/25/2023]
Abstract
The formation of a five- or six-membered ring is known to stabilize unstable molecular structures such as hemiacetals. This idea can also be extended to stabilize other high-coordinated p-block element species. Herein, we synthesized two novel polycyclic organophosphorus heterocycles via Staudinger-type annulations. Reactions of either ortho-phosphinoarenesulfonyl fluorides 1 or ortho-phosphinobenzoic acid methyl esters 4 with ortho-azidophenols 2 gave rise to penta-coordinated P(V) heterocycles, benzo-benzo-1,2,3-thiazaphospholo-1,3,2-oxazaphosphole (B-B-TAP-OAP) 3 and benzo-benzo-1,2-azaphospholo-1,3,2-oxazaphosphol-12-one (B-B-AP-OAP) 5 in satisfactory yields. It is remarkable that heterocycles 3 and 5 are both bench-stable and exhibit considerable stability in a 10 % aqueous tetrahydrofuran solution. Preliminary computational studies disclosed that the formation of nitrogen gas is the key driving force for the annulations. In addition, the formation of a strong Si-F bond is another contributor to the annulation of 1 and 2.
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Affiliation(s)
- Zhenguo Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Wenjun Luo
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Zhi-Wei Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Keshu Yin
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Mingjie Wei
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, P. R. China
| | - Le Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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15
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García-Castro M, Fuentes-Rios D, López-Romero JM, Romero A, Moya-Utrera F, Díaz-Morilla A, Sarabia F. n-Tuples on Scaffold Diversity Inspired by Drug Hybridisation to Enhance Drugability: Application to Cytarabine. Mar Drugs 2023; 21:637. [PMID: 38132958 PMCID: PMC10744741 DOI: 10.3390/md21120637] [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: 10/12/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023] Open
Abstract
A mathematical concept, n-tuples are originally applied to medicinal chemistry, especially with the creation of scaffold diversity inspired by the hybridisation of different commercial drugs with cytarabine, a synthetic arabinonucleoside derived from two marine natural products, spongouridine and spongothymidine. The new methodology explores the virtual chemical-factorial combination of different commercial drugs (immunosuppressant, antibiotic, antiemetic, anti-inflammatory, and anticancer) with the anticancer drug cytarabine. Real chemical combinations were designed and synthesised for 8-duples, obtaining a small representative library of interesting organic molecules to be biologically tested as proof of concept. The synthesised library contains classical molecular properties regarding the Lipinski rules and/or beyond rules of five (bRo5) and is represented by the covalent combination of the anticancer drug cytarabine with ibuprofen, flurbiprofen, folic acid, sulfasalazine, ciprofloxacin, bortezomib, and methotrexate. The insertion of specific nomenclature could be implemented into artificial intelligence algorithms in order to enhance the efficiency of drug-hunting programs. The novel methodology has proven useful for the straightforward synthesis of most of the theoretically proposed duples and, in principle, could be extended to any other central drug.
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Affiliation(s)
- Miguel García-Castro
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071 Malaga, Spain
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16
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Wang W, Zhao L, Wu H, He Y, Wu G. Divergent Trideuteromethylthiolation and Aminotrideuteromethylthiolation of Alkenes with N-Fluorobenzenesulfonimide and CD 3SSO 3Na. Org Lett 2023; 25:7078-7082. [PMID: 37732883 DOI: 10.1021/acs.orglett.3c02329] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
A metal-free oxidative trideuteromethylthiolation of alkenes with CD3SSO3Na using NFSI as an oxidant has been developed. The aminotrideuteromethylthiolation of a three-component reaction could be easily achieved in the presence of a cobalt catalyst. The divergent trideuteromethylthiolation of alkenes, readily available trideuteromethylthiolation reagent, and versatile synthetic strategy allow for late-stage modification of drug molecules.
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Affiliation(s)
- Wenting Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Lin Zhao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Hui Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Youqing He
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Ge Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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17
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Zhang M, He Y, Li S, Geng Y, Liu X, Yang X. Synthesis of spiropyrans and arylquinones via Ru(II)-catalyzed condition-controlled coupling of 3-aryl-2 H-benzoxazinones with benzoquinones. Chem Commun (Camb) 2023; 59:11704-11707. [PMID: 37700730 DOI: 10.1039/d3cc03395c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Ru(II)-catalyzed condition-controlled divergent coupling between 3-aryl-2H-benzoxazin-2-ones and benzoquinones has been realized under operationally simple conditions, affording a series of structurally stable spiropyrans and valuable arylquinones. The potential of this method is also demonstrated by scale-up synthesis and derivatization. Additionally, an unprecedented cycloruthenated complex has been identified as a key intermediate.
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Affiliation(s)
- Mengying Zhang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Yuhao He
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Song Li
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Yuehua Geng
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Xiangyang Liu
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Xifa Yang
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
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18
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Caramiello A, Bellucci MC, Cristina G, Castellano C, Meneghetti F, Mori M, Secundo F, Viani F, Sacchetti A, Volonterio A. Synthesis and Conformational Analysis of Hydantoin-Based Universal Peptidomimetics. J Org Chem 2023; 88:10381-10402. [PMID: 36226862 PMCID: PMC10407853 DOI: 10.1021/acs.joc.2c01903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Indexed: 11/30/2022]
Abstract
The synthesis of a collection of enantiomerically pure, systematically substituted hydantoins as structural privileged universal mimetic scaffolds is presented. It relies on a chemoselective condensation/cyclization domino process between isocyanates of quaternary or unsubstituted α-amino esters and N-alkyl aspartic acid diesters followed by standard hydrolysis/coupling reactions with amines, using liquid-liquid acid/base extraction protocols for the purification of the intermediates. Besides the nature of the α carbon on the isocyanate moiety, either a quaternary carbon or a more flexible methylene group, conformational studies in silico (molecular modeling), in solution (NMR, circular dichroism (CD), Fourier transform infrared (FTIR)), and in solid state (X-ray) showed that the presented hydantoin-based peptidomimetics are able to project their substituents in positions superimposable to the side chains of common protein secondary structures such as α-helix and β-turn, being the open α-helix conformation slightly favorable according to molecular modeling, while the closed β-turn conformation preferred in solution and in solid state.
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Affiliation(s)
- Alessio
M. Caramiello
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, 20131Milano, Italy
| | - Maria Cristina Bellucci
- Department
of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133Milano, Italy
| | - Gaetano Cristina
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, 20131Milano, Italy
| | - Carlo Castellano
- Department
of Chemistry, Università degli Studi
di Milano, via Golgi
19, 20133Milano, Italy
| | - Fiorella Meneghetti
- Department
of Pharmaceutical Sciences, Università
degli Studi di Milano, via Mangiagalli 25, 20133Milano, Italy
| | - Matteo Mori
- Department
of Pharmaceutical Sciences, Università
degli Studi di Milano, via Mangiagalli 25, 20133Milano, Italy
| | - Francesco Secundo
- Consiglio
Nazionale delle Ricerche, Istituto di Scienze
e Tecnologie Chimiche “G. Natta” (SCITEC), via Mario Bianco 9, 20131Milan, Italy
| | - Fiorenza Viani
- Consiglio
Nazionale delle Ricerche, Istituto di Scienze
e Tecnologie Chimiche “G. Natta” (SCITEC), via Mario Bianco 9, 20131Milan, Italy
| | - Alessandro Sacchetti
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, 20131Milano, Italy
| | - Alessandro Volonterio
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, 20131Milano, Italy
- Consiglio
Nazionale delle Ricerche, Istituto di Scienze
e Tecnologie Chimiche “G. Natta” (SCITEC), via Mario Bianco 9, 20131Milan, Italy
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19
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Li X, Zhang J, Chen Q, Tang P, Zhang T, Feng Q, Chen J, Liu Y, Wang FP, Peng C, Qin Y, Ouyang L, Xiao K, Liu XY. Diversity-oriented synthesis of diterpenoid alkaloids yields a potent anti-inflammatory agent. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 117:154907. [PMID: 37295024 DOI: 10.1016/j.phymed.2023.154907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/22/2023] [Accepted: 05/28/2023] [Indexed: 06/11/2023]
Abstract
BACKGROUND The diterpenoid alkaloids belong to a highly esteemed group of natural compounds, which display significant biological activities. It is a productive strategy to expand the chemical space of these intriguing natural compounds for drug discovery. METHODS We prepared a series of new derivatives bearing diverse skeletons and functionalities from the diterpenoid alkaloids deltaline and talatisamine based on a diversity-oriented synthesis strategy. The anti-inflammatory activity of these derivatives was initially screened and evaluated by the release of nitric oxide (NO), tumor necrosis factor (TNF-α), and interleukin-6 (IL-6) in lipopolysaccharide (LPS)-activated RAW264.7 cells. Futhermore, the anti-inflammatory activity of the representative derivative 31a was validated in various inflammatory animal models, including phorbol ester 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced mice ear edema, LPS-stimulated acute kidney injury, and collagen-induced arthritis (CIA). RESULTS It was found that several derivatives were able to suppress the secretion of NO, TNF-α, and IL-6 in LPS-activated RAW264.7 cells. Compound 31a, one of the representative derivatives named as deltanaline, demonstrated the strongest anti-inflammatory effects in LPS-activated macrophages and three different animal models of inflammatory diseases by inhibiting nuclear factor kappa-B (NF-κB)/mitogen-activated protein kinase (MAPK) signaling and inducing autophagy. CONCLUSION Deltanaline is a new structural compound derived from natural diterpenoid alkaloids, which may serve as a new lead compound for the treatment of inflammatory diseases.
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Affiliation(s)
- Xiaojie Li
- Precision Medicine Research Center, Sichuan Provincial Key Laboratory of Precision Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jifa Zhang
- State Key Laboratory of Biotherapy and Cancer Center, Joint Research Institution of Altitude Health, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qifeng Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Pan Tang
- State Key Laboratory of Biotherapy and Cancer Center, Joint Research Institution of Altitude Health, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ting Zhang
- Precision Medicine Research Center, Sichuan Provincial Key Laboratory of Precision Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyi Feng
- Precision Medicine Research Center, Sichuan Provincial Key Laboratory of Precision Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jiajun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yun Liu
- State Key Laboratory of Biotherapy and Cancer Center, Joint Research Institution of Altitude Health, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Feng-Peng Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Cheng Peng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Liang Ouyang
- State Key Laboratory of Biotherapy and Cancer Center, Joint Research Institution of Altitude Health, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Kai Xiao
- Precision Medicine Research Center, Sichuan Provincial Key Laboratory of Precision Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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20
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Sabarees G, Gouthaman S, Alagarsamy V, Velmurugan V, Solomon VR. Isolation, Functionalization, In Silico Investigation, and Synthesis of 1,8-Cineole Analog as Antitubercular Agent Targeting InhA. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2023. [DOI: 10.1134/s1068162023020206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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21
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Kumar S, Kajol K, Nayak P, Kumar A, Ramesh C. Synthesis of tetracyclic 4H-benzo[5,6]chromeno[3,4-d]oxazoles via palladium-catalyzed intramolecular direct heteroarylation. Chem Asian J 2023; 18:e202201151. [PMID: 36519340 DOI: 10.1002/asia.202201151] [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: 11/14/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
We report a palladium-catalyzed intramolecular direct heteroarylation of oxazole tethered β-naphthols to access corresponding tetracyclic 4H-benzo[5,6]chromeno[3,4-d]oxazoles. Various functional groups are well tolerated and furnished the desired products in good to excellent yields under the present reaction conditions. The scale-up reaction and synthetic utility of the resulting molecules have been demonstrated. Moreover, UV/vis absorption and fluorescence emission properties have been evaluated for these polyheterocyclic compounds.
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Affiliation(s)
- Sujeet Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, New Delhi, 110001, India
| | - Km Kajol
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India
| | - Prakash Nayak
- School of Chemical Sciences National Institute of Science Education and Research (NISER), Bhubaneswar, HBNI, Bhubaneswar, 752050, Odisha, India
| | - Amit Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, New Delhi, 110001, India
| | - Chintakunta Ramesh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute BS-10/1, Sector 10 Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, New Delhi, 110001, India
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22
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Zhao Q, Chen BH, Li HP, Yu TT, Peng C, He XH, Huang W. Highly diastereoselective [3+3] cycloaddition of indolin-3-ones and nitroallylic acetates: Efficient access to polysubstituted dihydropyrano[3,2-b]indoles. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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23
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Hernandez JJ, Frontier AJ. Alkynyl Prins carbocyclization cascades for the synthesis of linear-fused heterocyclic ring systems. Chem Sci 2022; 13:13836-13842. [PMID: 36544720 PMCID: PMC9710218 DOI: 10.1039/d2sc04750k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 11/04/2022] [Indexed: 11/12/2022] Open
Abstract
We report a Brønsted acid-catalyzed carbocyclization cascade, featuring condensation of an alcohol/sulfonamide with an aldehyde followed by an intramolecular three-component coupling involving an alkyne, an oxocarbenium/iminium ion, and an arene. A formal cycloaddition is embedded in the cationic cascade, which enables the synthesis of a wide range of fused heterotricycles. The diastereoselectivity of the cascade is studied using secondary alcohols/sulfonamides with different carbonyl partners. The described method results in the preparation of synthetically versatile scaffolds with ample opportunity for further derivatization at the resulting tetrasubstituted olefin, or by inclusion of other functionalizable motifs from the starting materials. It is worth noting that this chemistry also facilitates the synthesis of piperidines and 1,4-oxazepanes, as well as the inclusion of indoles and benzofurans, which are privileged motifs for medicinal chemistry. Herein we present the generality of this approach and some chemical transformations that can be achieved with our substrates.
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Affiliation(s)
- Jackson J. Hernandez
- Department of Chemistry, University of Rochester120 Trustee RoadRochesterNew York 14611USA
| | - Alison J. Frontier
- Department of Chemistry, University of Rochester120 Trustee RoadRochesterNew York 14611USA
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24
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Palavong N, Jantrapirom J, Tummatorn J, Thongsornkleeb C, Ruchirawat S. Acid‐dependent Divergent Conversion of ortho‐Arylcyclopropanecarbonyl Carboxaldehydes for the Synthesis of Furanodibenzocycloheptenes and Dibenzocycloheptenes. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200507] [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)
| | | | - Jumreang Tummatorn
- Chulabhorn Research Institute Medicinal chemistry 54 Kamphaeng Phet 6 Talat Bang Khen 10210 Lak Si THAILAND
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25
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Novodvorskyi Y, Lega D, Komarov I, Zhuravel I, Moskalenko O, Demchenko A. Synthesis and antioxidant activity of 3-(2-R-ylidenehydrazinyl)-6-tert-butyl-4H-[1,2,4]triazin-5-ones. PHARMACIA 2022. [DOI: 10.3897/pharmacia.69.e86036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Synthesis and structure elucidation of several series of new hydrazones containing 1,2,4-triazine-5-one core and their antioxidant activity are presented. The target compounds have been synthesized via interaction of either 4-amino-6-(tert-butyl)-3-hydrazinyl-1,2,4-triazin-5(4H)-one or 6-(tert-butyl)-3-hydrazinyl-1,2,4-triazin-5(2H)-one with a wide range of compounds with a carbonyl group in moderate to high yields. Molecular structures of the synthesized compounds were confirmed by 1H NMR, 13C NMR, and elemental analyses. The antioxidant activity of these compounds against ascorbic acid was screened to determine their potential as promising oxidative stress suppressors. Our data showed that hydrazones derived from 4-amino-6-(tert-butyl)-3-hydrazinyl-1,2,4-triazin-5(4H)-one are the most active antioxidants among all tested compounds. Furthermore, 3 compounds of this series have been proved to be twice as active as ascorbic acid does. The conclusions are substantiated for in-depth investigations of these derivatives as promising agents for the treatment of disorders accompanied by oxidative stress.
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26
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Solvent-controlled photosensitized divergent C3-ethoxycarbonylmethylation/hydroxyalkylation of imidazo[1,2-a]pyridines with diethyl bromomalonate. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Ping Y, Pan Q, Guo Y, Liu Y, Li X, Wang M, Kong W. Switchable 1,2-Rearrangement Enables Expedient Synthesis of Structurally Diverse Fluorine-Containing Scaffolds. J Am Chem Soc 2022; 144:11626-11637. [DOI: 10.1021/jacs.2c02487] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuanyuan Ping
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Qi Pan
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Ya Guo
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Yongli Liu
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Xiao Li
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Wangqing Kong
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
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Recent Advances in Divergent Synthetic Strategies for Indole-Based Natural Product Libraries. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072171. [PMID: 35408569 PMCID: PMC9000743 DOI: 10.3390/molecules27072171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 01/26/2023]
Abstract
Considering the potential bioactivities of natural product and natural product-like compounds with highly complex and diverse structures, the screening of collections and small-molecule libraries for high-throughput screening (HTS) and high-content screening (HCS) has emerged as a powerful tool in the development of novel therapeutic agents. Herein, we review the recent advances in divergent synthetic approaches such as complexity-to-diversity (Ctd) and biomimetic strategies for the generation of structurally complex and diverse indole-based natural product and natural product-like small-molecule libraries.
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29
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Festa A, Raspertov P, Voskressensky L. 2‐(Alkynyl)anilines and derivatives – versatile reagents for heterocyclic synthesis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alexey Festa
- Peoples' Friendship University of Russia RUSSIAN FEDERATION
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30
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Kolodyazhna TI, Lega DA, Suikov SY, Kyrylchuk AA, Vovk MV, Chernykh VP, Shemchuk LA. Some Aspects of 4
H
‐Pyrans Synthesis Based on 4‐Chloro‐1‐ethyl‐1
H
‐benzo[
c
][1,2]thiazine‐3‐carbaldehyde 2,2‐dioxide: Antimicrobial Activity of the Compounds Synthesized. ChemistrySelect 2021. [DOI: 10.1002/slct.202104103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tatiana I. Kolodyazhna
- Organic Chemistry Department National University of Pharmacy of the Ministry of Health of Ukraine 53, Pushkinska str. Kharkiv 61002 Ukraine
| | - Dmitry A. Lega
- Organic Chemistry Department National University of Pharmacy of the Ministry of Health of Ukraine 53, Pushkinska str. Kharkiv 61002 Ukraine
| | - Sergei Yu. Suikov
- Institute of Organic Chemistry of the National Academy of Sciences of Ukraine 5, Murman'ska str. Kyiv 02660 Ukraine
| | - Andrey A. Kyrylchuk
- Institute of Organic Chemistry of the National Academy of Sciences of Ukraine 5, Murman'ska str. Kyiv 02660 Ukraine
| | - Mykhaylo V. Vovk
- Institute of Organic Chemistry of the National Academy of Sciences of Ukraine 5, Murman'ska str. Kyiv 02660 Ukraine
| | - Valentine P. Chernykh
- Organic Chemistry Department National University of Pharmacy of the Ministry of Health of Ukraine 53, Pushkinska str. Kharkiv 61002 Ukraine
| | - Leonid A. Shemchuk
- Organic Chemistry Department National University of Pharmacy of the Ministry of Health of Ukraine 53, Pushkinska str. Kharkiv 61002 Ukraine
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31
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Giniyatullina GV, Petrova AV, Mustafin AG, Zileeva ZR, Kuzmina US, Vakhitova YV, Kazakova OB. Synthesis and Promising Cytotoxic Activity of Betulonic Acid Modified Derivatives. ChemistrySelect 2021. [DOI: 10.1002/slct.202101687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | | | - Akhat G. Mustafin
- Ufa Institute of Chemistry UFRC RAS Ufa 71 pr. Oktyabrya 450054 Russian Federation
| | - Zulfia R. Zileeva
- Institute of Biochemistry and Genetics UFRC RAS Ufa 71 pr. Oktyabrya 450054 Russian Federation
| | - Ulyana Sh. Kuzmina
- Institute of Biochemistry and Genetics UFRC RAS Ufa 71 pr. Oktyabrya 450054 Russian Federation
| | - Yulia V. Vakhitova
- Institute of Biochemistry and Genetics UFRC RAS Ufa 71 pr. Oktyabrya 450054 Russian Federation
| | - Oxana B. Kazakova
- Ufa Institute of Chemistry UFRC RAS Ufa 71 pr. Oktyabrya 450054 Russian Federation
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32
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Kiss L, Benke Z, Nonn M, Remete AM, Fustero S. Diversity-Oriented Synthesis of Highly Functionalized Alicycles across Dipolar Cycloaddition/Metathesis Reaction. Synlett 2021. [DOI: 10.1055/s-0040-1706041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
AbstractThis Account gives an insight into the selective functionalization of some readily available commercial cyclodienes across simple chemical transformations into functionalized small-molecular scaffolds. The syntheses involved selective cycloadditions, followed by ring-opening metathesis (ROM) of the resulting azetidin-2-one derivatives or isoxazoline frameworks and selective cross metathesis (CM) by discrimination of the C=C bonds on the alkenylated heterocycles. The CM protocols have been described when investigated under various conditions with the purpose on exploring chemodifferentiation of the olefin bonds and a study on the access of the corresponding functionalized β-lactam or isoxazoline derivatives is presented. Due to the expanding importance of organofluorine chemistry in drug research as well as of the high biological potential of β-lactam derivatives several illustrative examples to the access of some fluorine-containing molecular entities is also presented in this synopsis.1 Introduction2 Ring C=C Bond Functionalization of Some Cycloalkene β-Amino Acid Derivatives across Chlorosulfonyl Isocyanate Cycloaddition3 Ring C=C Bond Functionalization of Some Cycloalkene β-Amino Acid Derivatives across Nitrile Oxide Cycloaddition4 Ring C=C Bond Functionalization of Some Cycloalkene β-Amino Acid Derivatives across Metathesis5 Functionalization of sSome Cyclodienes across Nitrile Oxide Cycloaddition6 Selective Synthesis of Functionalized Alicycles across Ring-Opening Metathesis7 Selective Synthesis of Functionalized Alicycles through Cross Metathesis8 Summary and Outlook9 List of Abbreviations
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Affiliation(s)
- Loránd Kiss
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Zsanett Benke
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Melinda Nonn
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Attila M. Remete
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Santos Fustero
- Department of Organic Chemistry, University of Valencia, Pharmacy Faculty
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33
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Huang T, Yang C, Shi Y, Chen J, Wang T, Guo X, Liu X, Ding H, Wu Z, Hai L, Wu Y. One‐Pot Construction of Diverse Products using Versatile Cyclopropenones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100845] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tianle Huang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Chunyan Yang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Yuesen Shi
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Jian Chen
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Ting Wang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Xiaoyu Guo
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Xuexin Liu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Haosheng Ding
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Zhouping Wu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Li Hai
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
| | - Yong Wu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy Sichuan University Chengdu 610041 People's Republic of China
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34
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Wang YJ, Wang TT, Liang CC, Li ZH, Zhao LM. Synthesis of Indolo[2,1- a]benzazepinones through Rhodium-Catalyzed Cascade Reactions of 2-Arylindoles with Allyl Alcohols. Org Lett 2021; 23:6272-6277. [PMID: 34328334 DOI: 10.1021/acs.orglett.1c02064] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient synthesis of indolo[2,1-a]benzazepinones through rhodium-catalyzed cascade reactions of 2-arylindoles with allyl alcohols has been developed. This work expands the scope of products that are available through C-H activation/intramolecular annulation reactions of 2-arylindoles in organic synthesis.
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Affiliation(s)
- Yu-Jiao Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Tong-Tong Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Cai-Cai Liang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Zi-Hao Li
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
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35
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Guerra Faura G, Nguyen T, France S. Catalyst-Controlled Chemodivergent Reactions of 2-Pyrrolyl-α-diazo-β-ketoesters and Enol Ethers: Synthesis of 1,2-Dihydrofuran Acetals and Highly Substituted Indoles. J Org Chem 2021; 86:10088-10104. [PMID: 34259515 DOI: 10.1021/acs.joc.1c00826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A catalyst-controlled, chemodivergent reaction of pyrrolyl-α-diazo-β-ketoesters with enol ethers is reported. While Cu(II) catalysts selectively promoted a [3 + 2] cycloaddition to provide pyrrolyl-substituted 2,3-dihydrofuran (DHF) acetals, dimeric Rh(II) catalysts afforded 6-hydroxyindole-7-carboxylates via an unreported [4 + 2] benzannulation. The choice of enol ether proved to be crucial in determining both regioselectivity and yield of the respective products (up to 91% yield for Cu(II) and 82% for Rh(II) catalysis). Furthermore, the DHF acetals were shown to serve as precursors to 7-hydroxyindole-6-carboxylates (isomeric to the indoles formed from Rh) and highly substituted furans in the presence of Lewis acids. Thus, from a common pyrrolyl-α-diazo-β-ketoester, up to three unique heterocyclic scaffolds can be achieved based on catalyst selection.
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Affiliation(s)
- Gabriel Guerra Faura
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Tena Nguyen
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Stefan France
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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36
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Yanai H, Kawazoe T, Ishii N, Witulski B, Matsumoto T. Regioselective Synthesis of 4-Aryl-1,3-dihydroxy-2-naphthoates through 1,2-Aryl-Migrative Ring Rearrangement Reaction and their Photoluminescence Properties. Chemistry 2021; 27:11442-11449. [PMID: 34018653 DOI: 10.1002/chem.202101459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Indexed: 11/08/2022]
Abstract
4-Aryl-1,3-dihydroxy-2-naphthoates having the less accessible 1,2,3,4-tetrasubstituted naphthalene scaffold and that show photoluminescence emission from solid state as well as in solutions, were selectively synthesized from brominated lactol silyl ethers through the 1,2-aryl-migrative ring rearrangement reaction.
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Affiliation(s)
- Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Teru Kawazoe
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Nobuyuki Ishii
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Bernhard Witulski
- Laboratoire de Chimie Moléculaire et Thio-organique, CNRS UMR 6507, ENSICAEN & UNICaen, Normandie Univ., 6 Bvd Maréchal Juin, Caen, 14050, France
| | - Takashi Matsumoto
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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37
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Furiassi L, Tonogai EJ, Hergenrother PJ. Limonin as a Starting Point for the Construction of Compounds with High Scaffold Diversity. Angew Chem Int Ed Engl 2021; 60:16119-16128. [PMID: 33973348 PMCID: PMC8260459 DOI: 10.1002/anie.202104228] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Indexed: 12/21/2022]
Abstract
Structurally complex natural products have been a fruitful source for the discovery and development of new drugs. In an effort to construct a compound collection populated by architecturally complex members with unique scaffolds, we have used the natural product limonin as a starting point. Limonin is an abundant triterpenoid natural product and, through alteration of its heptacyclic core ring system using short synthetic sequences, a collection of 98 compounds was created, including multiple members with novel ring systems. The reactions leveraged in the construction of these compounds include novel ring cleavage, rearrangements, and cyclizations, and this work is highlighted by the discovery of a novel B-ring cleavage reaction, a unique B/C-ring rearrangement, an atypical D-ring cyclization, among others. Computational analysis shows that 52 different scaffolds/ring systems were produced during the course of this work, of which 36 are unprecedented. Phenotypic screening and structure-activity relationships identified compounds with activity against a panel of cancer cell lines.
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Affiliation(s)
- Lucia Furiassi
- Department of Chemistry, Carl R. Woese Institute for Genomic Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Emily J Tonogai
- Department of Chemistry, Carl R. Woese Institute for Genomic Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Paul J Hergenrother
- Department of Chemistry, Carl R. Woese Institute for Genomic Biology, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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38
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Abstract
Infections caused by protozoans remain a public health issue, especially in tropical countries. Serious adverse events, lack of efficacy at the different stages of the infection and routes of administration that have a negative impact on treatment adherence are some of the problems with currently available therapy against these diseases. Here we describe an epigenetic target, sirtuin 2 and its related proteins, that is promising given the results in phenotypic assays and in vivo models against Sir2 of Plasmodium falciparum, Leishmania donovani, Leishmania infantum, Schistosoma mansoni, Trypanosoma brucei and Trypanosoma cruzi parasites. The results we present highlight how this target can be extensively explored and how its inhibitors might be employed in the clinic.
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39
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Furiassi L, Tonogai EJ, Hergenrother PJ. Limonin as a Starting Point for the Construction of Compounds with High Scaffold Diversity. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104228] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Lucia Furiassi
- Department of Chemistry Carl R. Woese Institute for Genomic Biology Cancer Center at Illinois University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Emily J. Tonogai
- Department of Chemistry Carl R. Woese Institute for Genomic Biology Cancer Center at Illinois University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Paul J. Hergenrother
- Department of Chemistry Carl R. Woese Institute for Genomic Biology Cancer Center at Illinois University of Illinois at Urbana-Champaign Urbana IL 61801 USA
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40
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He G, List B, Christmann M. Unified Synthesis of Polycyclic Alkaloids by Complementary Carbonyl Activation**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Guoli He
- Freie Universität Berlin Institute of Chemistry and Biochemistry Takustrasse 3 14195 Berlin Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Mathias Christmann
- Freie Universität Berlin Institute of Chemistry and Biochemistry Takustrasse 3 14195 Berlin Germany
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41
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He G, List B, Christmann M. Unified Synthesis of Polycyclic Alkaloids by Complementary Carbonyl Activation*. Angew Chem Int Ed Engl 2021; 60:13591-13596. [PMID: 33769684 PMCID: PMC8252720 DOI: 10.1002/anie.202102518] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 01/23/2023]
Abstract
A complementary dual carbonyl activation strategy for the synthesis of polycyclic alkaloids has been developed. Successful applications include the synthesis of tetracyclic alkaloids harmalanine and harmalacinine, pentacyclic indoloquinolizidine alkaloid nortetoyobyrine, and octacyclic β-carboline alkaloid peganumine A. The latter synthesis features a protecting-group-free assembly and an asymmetric disulfonimide-catalyzed cyclization. Furthermore, formal syntheses of hirsutine, deplancheine, 10-desbromoarborescidine A, and oxindole alkaloids rhynchophylline and isorhynchophylline have been achieved. Finally, a concise synthesis of berberine alkaloid ilicifoline B was completed.
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Affiliation(s)
- Guoli He
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustrasse 3, 14195, Berlin, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Mathias Christmann
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustrasse 3, 14195, Berlin, Germany
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42
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Diallo BN, Glenister M, Musyoka TM, Lobb K, Tastan Bishop Ö. SANCDB: an update on South African natural compounds and their readily available analogs. J Cheminform 2021; 13:37. [PMID: 33952332 PMCID: PMC8097257 DOI: 10.1186/s13321-021-00514-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 04/23/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND South African Natural Compounds Database (SANCDB; https://sancdb.rubi.ru.ac.za/ ) is the sole and a fully referenced database of natural chemical compounds of South African biodiversity. It is freely available, and since its inception in 2015, the database has become an important resource to several studies. Its content has been: used as training data for machine learning models; incorporated to larger databases; and utilized in drug discovery studies for hit identifications. DESCRIPTION Here, we report the updated version of SANCDB. The new version includes 412 additional compounds that have been reported since 2015, giving a total of 1012 compounds in the database. Further, although natural products (NPs) are an important source of unique scaffolds, they have a major drawback due to their complex structure resulting in low synthetic feasibility in the laboratory. With this in mind, SANCDB is, now, updated to provide direct links to commercially available analogs from two major chemical databases namely Mcule and MolPort. To our knowledge, this feature is not available in other NP databases. Additionally, for easier access to information by users, the database and website interface were updated. The compounds are now downloadable in many different chemical formats. CONCLUSIONS The drug discovery process relies heavily on NPs due to their unique chemical organization. This has inspired the establishment of numerous NP chemical databases. With the emergence of newer chemoinformatic technologies, existing chemical databases require constant updates to facilitate information accessibility and integration by users. Besides increasing the NPs compound content, the updated SANCDB allows users to access the individual compounds (if available) or their analogs from commercial databases seamlessly.
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Affiliation(s)
- Bakary N'tji Diallo
- Research Unit in Bioinformatics (RUBi), Department of Biochemistry and Microbiology, Rhodes University, Makhanda/Grahamstown, 6140, South Africa
| | - Michael Glenister
- Research Unit in Bioinformatics (RUBi), Department of Biochemistry and Microbiology, Rhodes University, Makhanda/Grahamstown, 6140, South Africa
| | - Thommas M Musyoka
- Research Unit in Bioinformatics (RUBi), Department of Biochemistry and Microbiology, Rhodes University, Makhanda/Grahamstown, 6140, South Africa
| | - Kevin Lobb
- Research Unit in Bioinformatics (RUBi), Department of Biochemistry and Microbiology, Rhodes University, Makhanda/Grahamstown, 6140, South Africa.,Department of Chemistry, Rhodes University, Makhanda/Grahamstown, 6140, South Africa
| | - Özlem Tastan Bishop
- Research Unit in Bioinformatics (RUBi), Department of Biochemistry and Microbiology, Rhodes University, Makhanda/Grahamstown, 6140, South Africa.
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Cytotoxic Activity of Piperazin-2-One-Based Structures: Cyclic Imines, Lactams, Aminophosphonates, and Their Derivatives. MATERIALS 2021; 14:ma14092138. [PMID: 33922317 PMCID: PMC8122789 DOI: 10.3390/ma14092138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/11/2021] [Accepted: 04/19/2021] [Indexed: 12/23/2022]
Abstract
N-Heterocycles are considered as desirable scaffolds for the development of novel lead compounds for anticancer drug research. Among them, phosphorus-containing amino-derivatives play a crucial role. A series of imines and products of their further reactions with P-nucleophiles were obtained starting from vicinal bisamines. Reaction of ethylenediamine and α-carbonyl esters yielded in novel unexpected products, which structures were confirmed by crystallographic measurements. The cytotoxic activity evaluation was done on a variety of cell lines including HUH7, AKH12, DAOY, UW228-2, D283, D425, and U251. Human umbilical vein endothelial cells (HUVECs) were used as control. Two of the tested compounds, bearing TADDOL-derived, and trifluoromethyl substituents showed a significant effect on cell viability, though comparable to nonmalignant cells.
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44
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Benke Z, Remete AM, Semghouli A, Kiss L. Selective Functionalization of Norbornadiene Through Nitrile Oxide Cycloaddition/Ring‐Opening/Cross‐Metathesis Protocols. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zsanett Benke
- Institute of Pharmaceutical Chemistry University of Szeged H-6720 Szeged Eötvös u. 6 Hungary
- University of Szeged Interdisciplinary Excellence Centre Institute of Pharmaceutical Chemistry H-6720 Szeged Eötvös u. 6 Hungary
| | - Attila M. Remete
- Institute of Pharmaceutical Chemistry University of Szeged H-6720 Szeged Eötvös u. 6 Hungary
- University of Szeged Interdisciplinary Excellence Centre Institute of Pharmaceutical Chemistry H-6720 Szeged Eötvös u. 6 Hungary
| | - Anas Semghouli
- Institute of Pharmaceutical Chemistry University of Szeged H-6720 Szeged Eötvös u. 6 Hungary
- University of Szeged Interdisciplinary Excellence Centre Institute of Pharmaceutical Chemistry H-6720 Szeged Eötvös u. 6 Hungary
| | - Loránd Kiss
- Institute of Pharmaceutical Chemistry University of Szeged H-6720 Szeged Eötvös u. 6 Hungary
- University of Szeged Interdisciplinary Excellence Centre Institute of Pharmaceutical Chemistry H-6720 Szeged Eötvös u. 6 Hungary
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45
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Kamauchi H, Kimura Y, Ushiwatari M, Suzuki M, Seki T, Takao K, Sugita Y. Synthesis and antifungal activity of polycyclic pyridone derivatives with anti-hyphal and biofilm formation activity against Candida albicans. Bioorg Med Chem Lett 2021; 37:127845. [PMID: 33571649 DOI: 10.1016/j.bmcl.2021.127845] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/22/2021] [Accepted: 01/29/2021] [Indexed: 10/22/2022]
Abstract
Thirty-five pyridone derivatives were synthesized, with derivatization conducted on polycyclic pyridone scaffolds, including cis- or trans-oxydecalin and other cyclic structures, by domino-Knoevenagel-electrocyclic reactions. The anti-fungal activities of the synthesized compounds were tested against Candida albicans. Ten compounds inhibited hyphal formation without inhibiting growth. Pyridones with anti-hyphal formation activity (4c, 6d, 12a and 12c) were tested for their ability to inhibit biofilm formation. Compound 6d showed both anti-hyphal and biofilm inhibition activity.
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Affiliation(s)
- Hitoshi Kamauchi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan.
| | - Yu Kimura
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Mikoto Ushiwatari
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Mitsuaki Suzuki
- Department of Chemistry, Faculty of Science, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Taishi Seki
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Koichi Takao
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Yoshiaki Sugita
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
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Sun Q, Huang M, Wei Y. Diversity of the reaction mechanisms of SAM-dependent enzymes. Acta Pharm Sin B 2021; 11:632-650. [PMID: 33777672 PMCID: PMC7982431 DOI: 10.1016/j.apsb.2020.08.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/30/2020] [Accepted: 08/08/2020] [Indexed: 02/08/2023] Open
Abstract
S-adenosylmethionine (SAM) is ubiquitous in living organisms and is of great significance in metabolism as a cofactor of various enzymes. Methyltransferases (MTases), a major group of SAM-dependent enzymes, catalyze methyl transfer from SAM to C, O, N, and S atoms in small-molecule secondary metabolites and macromolecules, including proteins and nucleic acids. MTases have long been a hot topic in biomedical research because of their crucial role in epigenetic regulation of macromolecules and biosynthesis of natural products with prolific pharmacological moieties. However, another group of SAM-dependent enzymes, sharing similar core domains with MTases, can catalyze nonmethylation reactions and have multiple functions. Herein, we mainly describe the nonmethylation reactions of SAM-dependent enzymes in biosynthesis. First, we compare the structural and mechanistic similarities and distinctions between SAM-dependent MTases and the non-methylating SAM-dependent enzymes. Second, we summarize the reactions catalyzed by these enzymes and explore the mechanisms. Finally, we discuss the structural conservation and catalytical diversity of class I-like non-methylating SAM-dependent enzymes and propose a possibility in enzymes evolution, suggesting future perspectives for enzyme-mediated chemistry and biotechnology, which will help the development of new methods for drug synthesis.
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Huang T, Wang T, Shi Y, Chen J, Guo X, Lai R, Liu X, Wu Z, Peng D, Wang L, Li H, Hai L, Wu Y. Rh(III)-Catalyzed C-H Olefination Cascades to Divergently Construct Diverse Polyheterocycles by Tuning Manipulations of Directing Groups. Org Lett 2021; 23:1548-1553. [PMID: 33606549 DOI: 10.1021/acs.orglett.0c04155] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inspired by the diversity created by nature, organic chemists have been using a divergent strategy to improve the synthetic efficiency of diverse molecules. Transition-metal-catalyzed C-H functionalization has become one of the most straightforward, powerful, and atom-economical methods to construct complex scaffolds. However, C-H activation initiated divergent transformation to prepare diverse molecules is still limited. To address this challenge, we herein developed Rh(III)-catalyzed C-H olefination/annulation reaction cascades to divergently construct diverse polyheterocycles by tuning manipulations of directing groups (DGs). Up to 9 distinct scaffolds were creatively synthesized under simple conditions with good functional group tolerance, chemo-, and regioselectivity. Such a versatile strategy and its extension may encourage researchers to discover more promising manipulations of DGs for transition-metal-catalyzed C-H bond activation, making diverse available targets and materials that would have been previously out of range.
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Affiliation(s)
- Tianle Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ting Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yuesen Shi
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jian Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiaoyu Guo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ruizhi Lai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xuexin Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhouping Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Dongxue Peng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Longyu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hao Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Li Hai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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48
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Chintawar CC, Yadav AK, Kumar A, Sancheti SP, Patil NT. Divergent Gold Catalysis: Unlocking Molecular Diversity through Catalyst Control. Chem Rev 2021; 121:8478-8558. [PMID: 33555193 DOI: 10.1021/acs.chemrev.0c00903] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The catalyst-directed divergent synthesis, commonly termed as "divergent catalysis", has emerged as a promising technique as it allows chartering of structurally distinct products from common substrates simply by modulating the catalyst system. In this regard, gold complexes emerged as powerful catalysts as they offer unique reactivity profiles as compared to various other transition metal catalysts, primarily due to their salient electronic and geometrical features. Owing to the tunable soft π-acidic nature, gold catalysts not only evolved as superior contenders for catalyzing the reactions of alkynes, alkenes, and allenes but also, more intriguingly, have been found to provide divergent reaction pathways over other π-acid catalysts such as Ag, Pt, Pd, Rh, Cu, In, Sc, Hg, Zn, etc. The recent past has witnessed a renaissance in such examples wherein, by choosing gold catalysts over other transition metal catalysts or by fine-tuning the ligands, counteranions or oxidation states of the gold catalyst itself, a complete reactivity switch was observed. However, reviews documenting such examples are sporadic; as a result, most of the reports of this kind remained scattered in the literature, thereby hampering further development of this burgeoning field. By conceptualizing the idea of "Divergent Gold Catalysis (DGC)", this review aims to consolidate all such reports and provide a unified approach necessary to pave the way for further advancement of this exciting area. Based on the factors governing the divergence in product formation, an explicit classification of DGC has been provided. To gain a fundamental understanding of the divergence in observed reactivities and selectivities, the review is accompanied by mechanistic insights at appropriate places.
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Affiliation(s)
- Chetan C Chintawar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Amit K Yadav
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Anil Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Shashank P Sancheti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
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49
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Sahu SK, Behera PK, Choudhury P, Sethi M, Jena S, Rout L. Recent advances in [3+2] cycloaddition of allenes with 1,3-carbonyl ylides; Rh( ii)-catalyzed access to bridged polyoxocarbocyles. NEW J CHEM 2021. [DOI: 10.1039/d1nj02034j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study summarizes the stereochemical outcomes of [3+2] cycloaddition of allene molecules with 1,3-dipolar carbonyl ylides derived from Rh(ii) carbene-mediated diazo decomposition for the formation of highly diastereoselective poly oxacarbocycles.
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Affiliation(s)
| | | | | | | | - Satyaban Jena
- Dept. of Chemistry, Utkal University, Odisha-751004, India
| | - Laxmidhar Rout
- Dept. of Chemistry, Berhampur University, Odisha, 760007, India
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50
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Karmakar S, Das P, Kundu S. Silver-catalyzed tandem 5- and 6- endo-cyclizations via concomitant yne-ol-imine activation: selective entry to 2-aryldihydrofuroquinolines. NEW J CHEM 2021. [DOI: 10.1039/d1nj02643g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ag(i)-catalyzed domino imination-intramolecular bi-heterocyclization-aromatization cascade has been developed to construct 2-aryldihydrofuroquinolines from aldehyde and unprotected 4-(2-aminophenyl)but-3-yn-1-ol via tandem 5-endo-dig and 6-endo-trig cyclization.
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Affiliation(s)
- Swastik Karmakar
- Department of Chemistry, Basirhat College, A/w West Bengal State University, Basirhat-743412, West Bengal, India
| | - Prasanta Das
- Department of Chemistry, Basirhat College, A/w West Bengal State University, Basirhat-743412, West Bengal, India
| | - Sandip Kundu
- CIF Division, Indian Institute of Chemical Biology (IICB), Jadavpur-700032, West Bengal, India
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