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Yan LH, Li X, Wang BG. Natural products with 1,2-oxazine scaffold: occurrence, chemical diversity, bioactivity, synthesis, and biosynthesis. Nat Prod Rep 2023; 40:1874-1900. [PMID: 37642299 DOI: 10.1039/d3np00023k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Covering: up to the end of July, 20231,2-Oxazine is a heterocyclic scaffold rarely found in natural products and is characterized by a directly connected N-O bond in a six-membered ring. Since the discovery of geneserine, the first 1,2-oxazine-containing natural product (1,2-oxazine NP) being isolated from Calabar bean (Physostigma venenosum) in 1925, a total of 76 naturally occurring 1,2-oxazine NPs have been isolated and identified from various sources, which have attracted the attention of researchers in the field of natural product chemistry, organic synthesis, biosynthesis, and pharmacology. This review summarizes the chemical family of 1,2-oxazine NPs, focusing on their source organisms, structural diversities, chemical synthesis, and biosynthesis.
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Affiliation(s)
- Li-Hong Yan
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, China.
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, China
- University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China
| | - Xin Li
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, China.
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, China
| | - Bin-Gui Wang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, China.
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao 266237, China
- University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266071, China
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2
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Delcaillau T, Schmitt HL, Boehm P, Falk E, Morandi B. Palladium-Catalyzed Carbothiolation of Alkenes and Alkynes for the Synthesis of Heterocycles. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Tristan Delcaillau
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland
| | - Hendrik L. Schmitt
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland
| | - Philip Boehm
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland
| | - Eric Falk
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland
| | - Bill Morandi
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, Zürich 8093, Switzerland
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3
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Toublet FX, Lalut J, Hatat B, Lecoutey C, Davis A, Since M, Corvaisier S, Freret T, Sopková-de Oliveira Santos J, Claeysen S, Boulouard M, Dallemagne P, Rochais C. Pleiotropic prodrugs: Design of a dual butyrylcholinesterase inhibitor and 5-HT 6 receptor antagonist with therapeutic interest in Alzheimer's disease. Eur J Med Chem 2020; 210:113059. [PMID: 33310288 DOI: 10.1016/j.ejmech.2020.113059] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/23/2020] [Accepted: 11/24/2020] [Indexed: 12/16/2022]
Abstract
Beside acetylcholinesterase, butyrylcholinesterase could be considered as a putative target of interest for the symptomatic treatment of Alzheimer's disease (AD). As a result of complexity of AD, no molecule has been approved since 2002. Idalopirdine, a 5-HT6 receptors antagonist, did not show its effectiveness in clinical trial despite its evaluation as adjunct to cholinesterase inhibitors. Pleiotropic molecules, known as multitarget directed ligands (MTDLs) are currently developed to tackle the multifactorial origin of AD. In this context, we have developed a pleiotropic carbamate 7, that behaves as a covalent inhibitor of BuChE (IC50 = 0.97 μM). The latter will deliver after hydrolysis, compound 6, a potent 5-HT6 receptors antagonist (Ki = 11.4 nM) related to idalopirdine. In silico and in vitro evaluation proving our concept were performed completed with first in vivo results that demonstrate great promise in restoring working memory.
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Affiliation(s)
| | - Julien Lalut
- Normandie Univ, Unicaen, CERMN, 14000 Caen, France
| | - Bérénice Hatat
- Normandie Univ, Unicaen, CERMN, 14000 Caen, France; IGF, Univ. Montpellier, CNRS, INSERM Montpellier, France
| | | | - Audrey Davis
- Normandie Univ, Unicaen, CERMN, 14000 Caen, France
| | - Marc Since
- Normandie Univ, Unicaen, CERMN, 14000 Caen, France
| | | | - Thomas Freret
- Normandie Univ, Unicaen, INSERM, Comete, GIP CYCERON, 14000 Caen, France
| | | | | | - Michel Boulouard
- Normandie Univ, Unicaen, INSERM, Comete, GIP CYCERON, 14000 Caen, France
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4
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Akıncıoğlu H, Gülçin İ. Potent Acetylcholinesterase Inhibitors: Potential Drugs for Alzheimer's Disease. Mini Rev Med Chem 2020; 20:703-715. [PMID: 31902355 DOI: 10.2174/1389557520666200103100521] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/30/2018] [Accepted: 10/19/2019] [Indexed: 02/05/2023]
Abstract
Alzheimer's disease (AD) is one of the cognitive or memory-related impairments occurring with advancing age. Since its exact mechanism is not known, the full therapy has still not been found. Acetylcholinesterase (AChE) has been reported to be a viable therapeutic target for the treatment of AD and other dementias. To this end, acetylcholinesterase inhibitors (AChEIs) are commonly used. AChE is a member of the hydrolase enzyme family. A hydrolase is an enzyme that catalyzes the hydrolysis of a chemical bond. AChE is useful for the development of novel and mechanism-based inhibitors. It has a role in the breakdown of acetylcholine (ACh) neurotransmitters, such as acetylcholinemediated neurotransmission. AChEIs are the most effective approaches to treat AD. AChE hydrolyzes ACh to acetate and choline, as an important neurotransmitter substance. Recently, Gülçin and his group explored new AChEIs. The most suggested mechanism for AD is the deficiency of ACh, which is an important neurotransmitter. In this regard, AChEIs are commonly used for the symptomatic treatment of AD. They act in different ways, such as by inhibiting AChE, protecting cells from free radical toxicity and β-amyloid-induced injury or inhibiting the release of cytokines from microglia and monocytes. This review focuses on the role of AChEIs in AD using commonly available drugs. Also, the aim of this review is to research and discuss the role of AChEIs in AD using commonly available drugs. Therefore, in our review, related topics like AD and AChEIs are highlighted. Also, the latest work related to AChEIs is compiled. In recent research studies, novel natural and synthetic AChEIs, used for AD, are quite noteworthy. These studies can be very promising in detecting potent drugs against AD.
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Affiliation(s)
- Hulya Akıncıoğlu
- Faculty of Science and Arts, Agri Ibrahim Cecen University, 04100-Agri, Turkey
| | - İlhami Gülçin
- Department of Chemistry, Faculty of Science, Ataturk University, 25240-Erzurum, Turkey
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Marchese AD, Larin EM, Mirabi B, Lautens M. Metal-Catalyzed Approaches toward the Oxindole Core. Acc Chem Res 2020; 53:1605-1619. [PMID: 32706589 DOI: 10.1021/acs.accounts.0c00297] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The oxindole scaffold is a privileged structural motif that is found in a variety of bioactive targets and natural products. Moreover, derivatives of the oxindole structure are widely present in a number of biologically relevant compounds and are key intermediates in the synthesis of diverse natural products and pharmaceuticals. Therefore, novel methods to obtain oxindoles remain of high priority in synthetic organic chemistry.Over the past several decades, novel transition-metal-catalyzed methodologies have been applied toward the synthesis of a variety of heterocycles. A detailed mechanistic understanding facilitates the disruption of traditional catalytic pathways to access useful synthetic intermediates. The strategies employed have generally revolved around the generation of high-energy organometallic intermediates, which undergo cyclization reactions through domino processes. Domino cyclization methodologies are therefore attractive, as they allow facile access to functionalized oxindoles containing all-carbon quaternary centers or tetrasubstituted olefins with high chemo- and stereoselectivities. Furthermore, these developed synthetic strategies can often be easily applied in the syntheses of other related scaffolds.In this Account, we discuss the three unique strategies that our group has leveraged for the synthesis of valuable oxindole scaffolds. The first section in this Account outlines the use of an initial oxidative addition to a C(sp2)-X bond, followed by a migratory insertion, yielding a neopentyl species amenable to a variety of subsequent functionalizations. From this reactive neopentyl metal species, we have reported C-X reductive eliminations, anionic capture cascade reactions, and intramolecular C-H functionalization processes. The second section of this Account summarizes our group's findings on 1,2-insertions of a metal-nucleophile species across an unsaturation, generating a reactive organometallic intermediate; subsequent reactions with tethered electrophiles form the desired heterocyclic core. We have explored a wide array of transition metal-catalyzed strategies using this approach, including rhodium-catalyzed conjugate additions, an asymmetric copper-catalyzed borylcupration, and a palladium(II)-catalyzed chloropalladation protocol. The final section of this Account details the use of dual-metal catalysis to perform a cyclization through a C-H functionalization-allylation domino reaction. Throughout this Account, we provide details of mechanistic studies that better enabled our understanding of the domino processes.Overall, our group has developed methods exploiting the unique reactivity of palladium, nickel, copper, rhodium, and ruthenium catalysts to develop methods toward a wide array of oxindole scaffolds. On the basis of the utility, diversity, and applicability of the strategies developed, we believe that they will prove to be highly useful in the syntheses of other important targets and inspire further development and mechanistic understanding of various metal-catalyzed processes.
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Affiliation(s)
- Austin D. Marchese
- Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Egor M. Larin
- Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Bijan Mirabi
- Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Mark Lautens
- Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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6
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Lagunin AA, Ivanov SM, Gloriozova TA, Pogodin PV, Filimonov DA, Kumar S, Goel RK. Combined network pharmacology and virtual reverse pharmacology approaches for identification of potential targets to treat vascular dementia. Sci Rep 2020; 10:257. [PMID: 31937840 PMCID: PMC6959222 DOI: 10.1038/s41598-019-57199-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 12/21/2019] [Indexed: 02/07/2023] Open
Abstract
Dementia is a major cause of disability and dependency among older people. If the lives of people with dementia are to be improved, research and its translation into druggable target are crucial. Ancient systems of healthcare (Ayurveda, Siddha, Unani and Sowa-Rigpa) have been used from centuries for the treatment vascular diseases and dementia. This traditional knowledge can be transformed into novel targets through robust interplay of network pharmacology (NetP) with reverse pharmacology (RevP), without ignoring cutting edge biomedical data. This work demonstrates interaction between recent and traditional data, and aimed at selection of most promising targets for guiding wet lab validations. PROTEOME, DisGeNE, DISEASES and DrugBank databases were used for selection of genes associated with pathogenesis and treatment of vascular dementia (VaD). The selection of new potential drug targets was made by methods of NetP (DIAMOnD algorithm, enrichment analysis of KEGG pathways and biological processes of Gene Ontology) and manual expert analysis. The structures of 1976 phytomolecules from the 573 Indian medicinal plants traditionally used for the treatment of dementia and vascular diseases were used for computational estimation of their interactions with new predicted VaD-related drug targets by RevP approach based on PASS (Prediction of Activity Spectra for Substances) software. We found 147 known genes associated with vascular dementia based on the analysis of the databases with gene-disease associations. Six hundred novel targets were selected by NetP methods based on 147 gene associations. The analysis of the predicted interactions between 1976 phytomolecules and 600 NetP predicted targets leaded to the selection of 10 potential drug targets for the treatment of VaD. The translational value of these targets is discussed herewith. Twenty four drugs interacting with 10 selected targets were identified from DrugBank. These drugs have not been yet studied for the treatment of VaD and may be investigated in this field for their repositioning. The relation between inhibition of two selected targets (GSK-3, PTP1B) and the treatment of VaD was confirmed by the experimental studies on animals and reported separately in our recent publications.
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Affiliation(s)
- Alexey A Lagunin
- Pirogov Russian National Research Medical University, Department of Bioinformatics, Moscow, 117997, Russia.
- Institute of Biomedical Chemistry, Department of Bioinformatics, Moscow, 119121, Russia.
| | - Sergey M Ivanov
- Pirogov Russian National Research Medical University, Department of Bioinformatics, Moscow, 117997, Russia
- Institute of Biomedical Chemistry, Department of Bioinformatics, Moscow, 119121, Russia
| | - Tatyana A Gloriozova
- Institute of Biomedical Chemistry, Department of Bioinformatics, Moscow, 119121, Russia
| | - Pavel V Pogodin
- Institute of Biomedical Chemistry, Department of Bioinformatics, Moscow, 119121, Russia
| | - Dmitry A Filimonov
- Institute of Biomedical Chemistry, Department of Bioinformatics, Moscow, 119121, Russia
| | - Sandeep Kumar
- Punjabi University, Department of Pharmaceutical Sciences and Drug Research, Patiala, 147002, India
| | - Rajesh K Goel
- Punjabi University, Department of Pharmaceutical Sciences and Drug Research, Patiala, 147002, India.
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Straightforward synthesis of 4,5-bifunctionalized 1,2-oxazinanes via Lewis acid promoted regio- and stereo-selective nucleophilic ring-opening of 3,6-dihydro-1,2-oxazine oxides. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Ji W, Li CL, Chen H, Yu ZX, Liao X. A newly designed heterodiene and its application to construct six-membered heterocycles containing an N-O bond. Chem Commun (Camb) 2019; 55:12012-12015. [PMID: 31538167 DOI: 10.1039/c9cc05694g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of zwitterionic nitrosoalkene generated in situ from dehydrohalogenation of α-halo-N-alkylhydroxamic acids was designed. [4+2] cycloadditions of this heterodiene to olefins provide a facile route to construct six-membered heterocycles containing an N-O bond and a new protocol for 1,2-syn carbohydroxylate alkenes with a hydroxyl and acetamide group. DFT calculations support a concerted cycloaddition pathway and the solvent HFIP can stabilize the transition state through H-bonding interaction.
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Affiliation(s)
- Wenzhi Ji
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
| | - Chen-Long Li
- Beijing National Laboratory for Molecular Science (BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry Of Education, College of Chemistry Peking University, Beijing, 100871, China.
| | - Hui Chen
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Science (BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry Of Education, College of Chemistry Peking University, Beijing, 100871, China.
| | - Xuebin Liao
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
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9
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Inhibiting Acetylcholinesterase to Activate Pleiotropic Prodrugs with Therapeutic Interest in Alzheimer's Disease. Molecules 2019; 24:molecules24152786. [PMID: 31370232 PMCID: PMC6696315 DOI: 10.3390/molecules24152786] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 07/27/2019] [Accepted: 07/30/2019] [Indexed: 01/09/2023] Open
Abstract
Alzheimer's disease (AD) is a multifactorial neurodegenerative disease which is still poorly understood. The drugs currently used against AD, mainly acetylcholinesterase inhibitors (AChEI), are considered clinically insufficient and are responsible for deleterious side effects. AChE is, however, currently receiving renewed interest through the discovery of a chaperone role played in the pathogenesis of AD. But AChE could also serve as an activating protein for pleiotropic prodrugs. Indeed, inhibiting central AChE with brain-penetrating designed carbamates which are able to covalently bind to the enzyme and to concomitantly liberate active metabolites in the brain could constitute a clinically more efficient approach which, additionally, is less likely to cause peripheral side effects. We aim in this article to pave the road of this new avenue with an in vitro and in vivo study of pleiotropic prodrugs targeting both the 5-HT4 receptor and AChE, in order to display a neuroprotective activity associated with a sustained restoration of the cholinergic neurotransmission and without the usual peripheral side effects associated with classic AChEI. This plural activity could bring to AD patients effective, relatively safe, symptomatic and disease-modifying therapeutic benefits.
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Hu L, Rombola M, Rawal VH. Synthesis of 1,2-Oxazinanes via Hydrogen Bond Mediated [3 + 3] Cycloaddition Reactions of Oxyallyl Cations with Nitrones. Org Lett 2018; 20:5384-5388. [PMID: 30133293 DOI: 10.1021/acs.orglett.8b02301] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Reported herein is the development of [3 + 3] cycloaddition reactions between oxyallyl cations and nitrones to yield 1,2-oxazinane heterocycles. Oxyallyl cation intermediates, generated in situ from α-tosyloxy ketones in the presence of hexafluoro-2-propanol (HFIP), a cosolvent, and a base, are found to react with a range of nitrones to afford 1,2-oxazinanes in good to high yields. The reactions are catalyzed by hydrogen-bond donors such as phenols and squaramides, and dramatically higher diastereoselectivities are observed with 4-nitrophenol.
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Affiliation(s)
- Lingbowei Hu
- Department of Chemistry , University of Chicago , 5735 South Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Michael Rombola
- Department of Chemistry , University of Chicago , 5735 South Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Viresh H Rawal
- Department of Chemistry , University of Chicago , 5735 South Ellis Avenue , Chicago , Illinois 60637 , United States
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11
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Liu W, Yang H, Sun B, Zhang FL, Liu D, Zheng H. Synthesis of dihydrobenzoxazine pyrrolidone spirocyclic compounds. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.08.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Cordier M, Archambeau A. (3 + 3) Cycloaddition of Oxyallyl Cations with Nitrones: Diastereoselective Access to 1,2-Oxazinanes. Org Lett 2018; 20:2265-2268. [DOI: 10.1021/acs.orglett.8b00617] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Marie Cordier
- Laboratoire de Chimie Moléculaire, UMR 9168, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France
| | - Alexis Archambeau
- Laboratoire de Synthèse Organique, UMR 7652, Ecole Polytechnique, ENSTA ParisTech, CNRS, 91128 Palaiseau Cedex, France
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13
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Diastereo- and enantioselective [3 + 3] cycloaddition of spirocyclopropyl oxindoles using both aldonitrones and ketonitrones. Nat Commun 2017; 8:1619. [PMID: 29158496 PMCID: PMC5696380 DOI: 10.1038/s41467-017-01451-1] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 09/18/2017] [Indexed: 02/02/2023] Open
Abstract
Optically active spirocyclic compounds play an important role in drug discovery, and new synthetic strategies for the efficient generation of spiro stereocenters are in much demand. Here we report a catalytic enantioselective cycloaddition using spirocyclic donor–acceptor cyclopropanes as a promising approach for the generation of spiro stereocenters. A diastereo- and enantioselective [3 + 3] cycloaddition of spirocyclopropyl oxindoles with both aldonitrones and ketonitrones is developed. The key to reaction development is the activation of spirocyclopropyl oxindoles by a suitable electron-withdrawing N-protecting group. This activation approach offers the promise of a general solution to enable spirocyclopropyl oxindoles as synthons for catalytic enantioselective synthesis of spirocyclic oxindoles featuring a C3 spiro stereocenter, a prominent structural motif in drugs and pharmaceutically active compounds. This protocol also constitutes the catalytic enantioselective reaction using unactivated achiral ketonitrones to construct tetrasubstituted carbon stereocenters. Chiral spirocyclic compounds are important structural motifs for drug discovery. Here, the authors report a synthetic route to spirocycles based on enantioselective cycloaddition of activated spirocyclopropyl oxindoles, which act as donor-acceptor cyclopropanes.
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14
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Li B, Huang AL, Zhang YL, Li Z, Ding HW, Huang C, Meng XM, Li J. Design, Synthesis and Evaluation of Hesperetin Derivatives as Potential Multifunctional Anti-Alzheimer Agents. Molecules 2017; 22:molecules22071067. [PMID: 28672874 PMCID: PMC6152180 DOI: 10.3390/molecules22071067] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/15/2017] [Accepted: 06/25/2017] [Indexed: 11/16/2022] Open
Abstract
In this study we designed and synthesized a series of new hesperetin derivatives on the basis of the structural characteristics of acetylcholinesterase (AChE) dual-site inhibitors. The activity of the novel derivatives was also evaluated. Results showed that the synthesized hesperetin derivatives displayed stronger inhibitory activity against AChE and higher selectivity than butyrylcholine esterase (BuChE) (selectivity index values from 68 to 305). The Lineweaver-Burk plot and molecular docking study showed that these compounds targeted both the peripheral anionic site (PAS) and catalytic active site (CAS) of AChE. The derivatives also showed a potent self-induced β-amyloid (Aβ) aggregation inhibition and a peroxyl radical absorbance activity. Moreover, compound 4f significantly protected PC12 neurons against H₂O₂-induced cell death at low concentrations. Cytotoxicity assay showed that the low concentration of the derivatives does not affect the viability of the SH-SY5Y neurons. Thus, these hesperetin derivatives are potential multifunctional agents for further development for the treatment of Alzheimer's disease.
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Affiliation(s)
- Bo Li
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
| | - Ai-Ling Huang
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
| | - Yi-Long Zhang
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
| | - Zeng Li
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
| | - Hai-Wen Ding
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
| | - Cheng Huang
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
| | - Xiao-Ming Meng
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
| | - Jun Li
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, 230000 Hefei, China.
- The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, 230000 Hefei, China.
- Institute for Liver Diseases, Anhui Medical University, 230000 Hefei, China.
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15
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Kumar N, Ghosh S, Bhunia S, Bisai A. Synthesis of 2-oxindoles via 'transition-metal-free' intramolecular dehydrogenative coupling (IDC) of sp(2) C-H and sp(3) C-H bonds. Beilstein J Org Chem 2016; 12:1153-1169. [PMID: 27559367 PMCID: PMC4979638 DOI: 10.3762/bjoc.12.111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 05/16/2016] [Indexed: 11/23/2022] Open
Abstract
The synthesis of a variety of 2-oxindoles bearing an all-carbon quaternary center at the pseudo benzylic position has been achieved via a ‘transition-metal-free’ intramolecular dehydrogenative coupling (IDC). The construction of 2-oxindole moieties was carried out through formation of carbon–carbon bonds using KOt-Bu-catalyzed one pot C-alkylation of β-N-arylamido esters with alkyl halides followed by a dehydrogenative coupling. Experimental evidences indicated toward a radical-mediated path for this reaction.
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Affiliation(s)
- Nivesh Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Santanu Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Subhajit Bhunia
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Alakesh Bisai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
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16
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Bacalhau P, San Juan AA, Goth A, Caldeira AT, Martins R, Burke AJ. Insights into (S)-rivastigmine inhibition of butyrylcholinesterase (BuChE): Molecular docking and saturation transfer difference NMR (STD-NMR). Bioorg Chem 2016; 67:105-9. [DOI: 10.1016/j.bioorg.2016.06.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/07/2016] [Accepted: 06/02/2016] [Indexed: 10/21/2022]
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17
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Li Z, Mu C, Wang B, Jin J. Graveoline Analogs Exhibiting Selective Acetylcholinesterase Inhibitory Activity as Potential Lead Compounds for the Treatment of Alzheimer's Disease. Molecules 2016; 21:132. [PMID: 26805806 PMCID: PMC6273267 DOI: 10.3390/molecules21020132] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/18/2016] [Accepted: 01/20/2016] [Indexed: 11/26/2022] Open
Abstract
This study designed and synthesized a series of new graveoline analogs on the basis of the structural characteristics of acetylcholinesterase (AChE) dual-site inhibitors. The activity of these analogs was also evaluated. Results showed that the synthesized graveoline analogs displayed stronger inhibitory activity against AChE and higher selectivity than butyrylcholine esterase (BuChE) (Selectivity Index from 45 to 486). When the two sites in the graveoline parent ring substituting phenyl and amino terminal had six chemical bonds (n = 3) and the terminal amino was piperidine, compound 5c showed the best activity. Furthermore, the mechanism of action and binding mode were explored by enzyme kinetic simulation, molecular docking, and thioflavin T-based fluorometric assay. Cytotoxicity assay showed that the low concentration of the analogs did not affect the viability of the neurocyte SH-SY5Y.
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Affiliation(s)
- Zeng Li
- College of Pharmacy, Anhui Medical University, Hefei 230032, China.
| | - Chaoyu Mu
- College of Pharmacy, Anhui Medical University, Hefei 230032, China.
- Department of Clinical Laboratory, Huaibei Miner's General Hospital, Huaibei 235000, China.
| | - Bin Wang
- School of Pharmaceutical Sciences, Xiangnan University, Chenzhou 423000, China.
| | - Juan Jin
- College of Pharmacy, Anhui Medical University, Hefei 230032, China.
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18
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Hu J, Zhang M, Gong Y. Cycloaddition Reactions of Alkyl Cyclopropenecarboxylates Generated in situ with Nitrones: Construction of Substituted Pyrroles and 1,2-Oxazinanes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403551] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Cheng S, Yu S. Enantioselective synthesis of 3-substituted 1,2-oxazinanes via organocatalytic intramolecular aza-Michael addition. Org Biomol Chem 2014; 12:8607-10. [PMID: 25272305 DOI: 10.1039/c4ob01646g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective intramolecular 6-exo-trig aza-Michael addition was developed to afford chiral 3-substituted 1,2-oxazinanes in high yields (up to 99% yield) and good enantioselectivities (up to 98/2 er). These reactions were enabled by a quinine-derived primary-tertiary diamine as a catalyst and pentafluoropropionic acid (PFP) as a co-catalyst.
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Affiliation(s)
- Shuanghua Cheng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China.
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20
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Mulla SA, Chavan SS, Inamdar SM, Pathan MY, Shaikh TM. An efficient synthesis of O-aryloxime ethers by copper fluorapatite catalyzed cross-coupling of aryloximes with arylboronic acids. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Vijay Kumar S, Saraiah B, Parameshwarappa G, Ila H, Verma GK. Synthesis of N-Functionalized/NH-Multisubstituted Indoles, Thienopyrroles, Pyrroloindoles, and Pyrazolopyrroles via Sequential One-Pot Base-Mediated and Copper-Catalyzed Inter- and Intramolecular Amination of 2-[2-Bromo(het)aryl]-3-(het)aryl-3-(methylthio)acrylonitriles. J Org Chem 2014; 79:7961-78. [DOI: 10.1021/jo501114a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- S. Vijay Kumar
- New
Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - B. Saraiah
- New
Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - G. Parameshwarappa
- New
Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - H. Ila
- New
Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Girijesh K. Verma
- Department
of Chemistry, Banaras Hindu University, Varanasi 221005, India
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22
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Lin H, Sun XW, Lin GQ. Dual-Organocatalyst-Promoted Asymmetric Cascade Reaction: Highly Efficient Construction of Enantiopure Fully Substituted Tetrahydro-1,2-oxazines. Org Lett 2014; 16:752-5. [DOI: 10.1021/ol403463h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Hua Lin
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P. R. China
| | - Xing-Wen Sun
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P. R. China
| | - Guo-Qiang Lin
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P. R. China
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23
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Verma AK, Choudhary D, Saunthwal RK, Rustagi V, Patel M, Tiwari RK. On water: silver-catalyzed domino approach for the synthesis of benzoxazine/oxazine-fused isoquinolines and naphthyridines from o-alkynyl aldehydes. J Org Chem 2013; 78:6657-69. [PMID: 23826940 DOI: 10.1021/jo4009639] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An operationally simple domino approach for the silver-catalyzed synthesis of oxazine/benzoxazine-fused isoquinolines 5a-q and naphthyridines 6a-v by the reaction of o-alkynyl aldehydes 3a-aa with amines having embedded nucleophiles 4a-d under mild reaction condition in water is described. The reaction shows selective C-N bond formation on the more electrophilic alkynyl carbon resulting in the formation of 6-endo-dig cyclized product. The competitive experiments show the viability of an intramolecular nucleophilic attack over an intermolecular attack of the external nucleophile. This methodology accommodates wide functional group variation, which proves to be useful for structural and biological assessment.
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Affiliation(s)
- Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India.
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24
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Takasu N, Oisaki K, Kanai M. Iron-Catalyzed Oxidative C(3)–H Functionalization of Amines. Org Lett 2013; 15:1918-21. [DOI: 10.1021/ol400568u] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Noriaki Takasu
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and ERATO, Japan Science and Technology Agency (JST), Kanai Life Science Catalysis Project, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kounosuke Oisaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and ERATO, Japan Science and Technology Agency (JST), Kanai Life Science Catalysis Project, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and ERATO, Japan Science and Technology Agency (JST), Kanai Life Science Catalysis Project, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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25
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Tripoteau F, Eberlin L, Fox MA, Carboni B, Whiting A. A novel, efficient synthesis of N-aryl pyrroles via reaction of 1-boronodienes with arylnitroso compounds. Chem Commun (Camb) 2013; 49:5414-6. [DOI: 10.1039/c3cc42227e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Ghosh S, De S, Kakde BN, Bhunia S, Adhikary A, Bisai A. Intramolecular Dehydrogenative Coupling of sp2 C–H and sp3 C–H Bonds: An Expeditious Route to 2-Oxindoles. Org Lett 2012; 14:5864-7. [DOI: 10.1021/ol302767w] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Santanu Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP-462 023, India
| | - Subhadip De
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP-462 023, India
| | - Badrinath N. Kakde
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP-462 023, India
| | - Subhajit Bhunia
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP-462 023, India
| | - Amit Adhikary
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP-462 023, India
| | - Alakesh Bisai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, MP-462 023, India
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27
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Lin H, Tan Y, Sun XW, Lin GQ. Highly Efficient Asymmetric Synthesis of Enantiopure Dihydro-1,2-oxazines: Dual-Organocatalyst-Promoted Asymmetric Cascade Reaction. Org Lett 2012; 14:3818-21. [DOI: 10.1021/ol301218x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hua Lin
- Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Yu Tan
- Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Xing-Wen Sun
- Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Guo-Qiang Lin
- Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
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28
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Qian Y, Xu X, Wang X, Zavalij PJ, Hu W, Doyle MP. Rhodium(II)- and copper(II)-catalyzed reactions of enol diazoacetates with nitrones: metal carbene versus Lewis acid directed pathways. Angew Chem Int Ed Engl 2012; 51:5900-3. [PMID: 22566213 DOI: 10.1002/anie.201202525] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Yu Qian
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
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29
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Qian Y, Xu X, Wang X, Zavalij PJ, Hu W, Doyle MP. Rhodium(II)- and Copper(II)-Catalyzed Reactions of Enol Diazoacetates with Nitrones: Metal Carbene versus Lewis Acid Directed Pathways. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202525] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Commandeur C, Commandeur M, Bathany K, Kauffmann B, Edmunds AJ, Maienfisch P, Ghosez L. Study of the oxidation of 3-hydroxypyrroloindoles to pyrrolobenzoxazine alkaloids. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.112] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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31
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Takahashi J, Hijikuro I, Kihara T, Murugesh MG, Fuse S, Tsumura Y, Akaike A, Niidome T, Takahashi T, Sugimoto H. Design, synthesis and evaluation of carbamate-modified (−)-N1-phenethylnorphysostigmine derivatives as selective butyrylcholinesterase inhibitors. Bioorg Med Chem Lett 2010; 20:1721-3. [DOI: 10.1016/j.bmcl.2010.01.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2009] [Revised: 01/07/2010] [Accepted: 01/08/2010] [Indexed: 10/19/2022]
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32
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Liu F, Yu Y, Zhang J. Highly Substituted Furo[3,4-d][1,2]oxazines: Gold-Catalyzed Regiospecific and Diastereoselective 1,3-Dipolar Cycloaddition of 2-(1-Alkynyl)-2-alken-1-ones with Nitrones. Angew Chem Int Ed Engl 2009; 48:5505-8. [DOI: 10.1002/anie.200901299] [Citation(s) in RCA: 168] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Liu F, Yu Y, Zhang J. Highly Substituted Furo[3,4-d][1,2]oxazines: Gold-Catalyzed Regiospecific and Diastereoselective 1,3-Dipolar Cycloaddition of 2-(1-Alkynyl)-2-alken-1-ones with Nitrones. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901299] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Ding Q, Wang Z, Wu J. Tandem cyclization-[3+3] cycloaddition reactions of 2-alkynylbenzaldoxime: synthesis of fused 1,2-dihydroisoquinolines. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.10.121] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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Zhu D, Lu M, Chua PJ, Tan B, Wang F, Yang X, Zhong G. A Highly Stereoselective Organocatalytic Tandem Aminoxylation/Aza-Michael Reaction for the Synthesis of Tetrahydro-1,2-Oxazines. Org Lett 2008; 10:4585-8. [DOI: 10.1021/ol801864c] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Di Zhu
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Min Lu
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Pei Juan Chua
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Bin Tan
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Fei Wang
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Xinhao Yang
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Guofu Zhong
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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36
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Siwicka A, Moleda Z, Wojtasiewicz K, Zawadzka A, Maurin JK, Panasiewicz M, Pacuszka T, Czarnocki Z. The oxidation products of melatonin derivatives exhibit acetylcholinesterase and butyrylcholinesterase inhibitory activity. J Pineal Res 2008; 45:40-9. [PMID: 18284552 DOI: 10.1111/j.1600-079x.2008.00554.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It is already well documented that melatonin exhibits strong antioxidant properties. It traps several reactive oxygen species including singlet oxygen, peroxyl and hydroxyl radicals. Also, peroxynitrite-induced reactions are inhibited by melatonin. The oxidation of melatonin by singlet molecular oxygen [O(2) ((1)Delta(g))] may produce cyclic 3-hydroxymelatonin whose structure we have already studied. In this investigation we report on the synthesis of several melatonin analogues having a carbamate substituent instead of the methoxy group at 5 position of the indole ring. These compounds behave analogously to melatonin with respect to singlet oxygen and produce the corresponding cyclic 3-hydroxymelatonin analogues. The structures of the products were investigated with spectral methods and X-ray crystallography. The compounds obtained possess the 2,3,8,8a-tetrahydropyrrolo[2,3-b]indole heterocyclic system which is a structural motif characteristic of alkaloids, physostigmine and phenserine, that are potent acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitors used in the Alzheimer's disease treatment. We measured the inhibitory activity of the obtained compounds against AChE and BChE from human erythrocytes and serum. In the case of the compounds having a phenylcarbamate and methoxyphenylcarbamate substituents, the inhibitory activity (IC(50)) ranged from 0.252 +/- 0.033 to 3.804 +/- 0.581 microM. Other compounds were less active and showed rather complex interactions with the structure-activity relationship in need of further investigation.
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37
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De P, Pandurangan K, Maitra U, Wailes S. CuI-Mediated Cross-Coupling of Aryl Halides with Oximes: A Direct Access to O-Aryloximes. Org Lett 2007; 9:2767-70. [PMID: 17580882 DOI: 10.1021/ol0709578] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first Cu-catalyzed cross-coupling of aromatic oximes and haloarenes is reported. This one-step formation of the =N-O-Ar linkage gives access to a range of oxime ethers in good to moderate yields.
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Affiliation(s)
- Prithwiraj De
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
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38
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Kang YB, Sun XL, Tang Y. Highly Enantioselective and Diastereoselective Cycloaddition of Cyclopropanes with Nitrones and Its Application in the Kinetic Resolution of 2-Substituted Cyclopropane-1,1-dicarboxylates. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604645] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Kang YB, Sun XL, Tang Y. Highly Enantioselective and Diastereoselective Cycloaddition of Cyclopropanes with Nitrones and Its Application in the Kinetic Resolution of 2-Substituted Cyclopropane-1,1-dicarboxylates. Angew Chem Int Ed Engl 2007; 46:3918-21. [PMID: 17437309 DOI: 10.1002/anie.200604645] [Citation(s) in RCA: 198] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yan-Biao Kang
- The State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai, 200032, P.R. China
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40
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H. Greig N, Luo W, Yu QS, W. Holloway H, Tweedie D, Parrish D, Brossi A. Syntheses and Anticholinesterase Activities of Novel 3-Aminocarbonylmethylene-3-methyl-2,3-dihydrobenzofuran-5-yl Carbamates. HETEROCYCLES 2007. [DOI: 10.3987/com-07-11136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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41
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42
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Luo W, Yu QS, Kulkarni SS, Parrish DA, Holloway HW, Tweedie D, Shafferman A, Lahiri DK, Brossi A, Greig NH. Inhibition of human acetyl- and butyrylcholinesterase by novel carbamates of (-)- and (+)-tetrahydrofurobenzofuran and methanobenzodioxepine. J Med Chem 2006; 49:2174-85. [PMID: 16570913 PMCID: PMC2610450 DOI: 10.1021/jm050578p] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new enantiomeric synthesis utilizing classical resolution provided two novel series of optically active inhibitors of cholinesterase: (-)- and (+)-O-carbamoyl phenols of tetrahydrofurobenzofuran and methanobenzodioxepine. An additional two series of (-)- and (+)-O-carbamoyl phenols of pyrroloindole and furoindole were obtained by known procedures, and their anticholinesterase actions were similarly quantified against freshly prepared human acetyl- (AChE) and butyrylcholinesterase (BChE). Both enantiomeric forms of each series demonstrated potent cholinesterase inhibitory activity (with IC(50) values as low as 10 nM for AChE and 3 nM for BChE), with the exception of the (+)-O-carbamoyl phenols of pyrroloindole, which lacked activity (IC(50) values >1 microM). Based on the biological data of these four series, a structure-activity relationship (SAR) analysis was provided by molecular volume calculations. In addition, a probable transition-state model was established according to the known X-ray structure of a transition-state complex of Torpedo californica AChE-m-(N,N,N-trimethylammonio)-2,2,2-trifluoroacetophenone (TcAChE-TMTFA). This model proved valuable in explaining the enantioselectivity and enzyme subtype selectivity of each series. These carbamates are more potent than, or similarly potent to, anticholinesterases in current clinical use, providing not only inhibitors of potential clinical relevance but also pharmacological tools to define drug-enzyme binding interactions within an enzyme crucial in the maintenance of cognition and numerous systemic physiological functions in health, aging, and disease.
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Affiliation(s)
- Weiming Luo
- Drug Design & Development Section, Laboratory of Neurosciences, Gerontology Research Center, National Institute on Aging, National Institutes of Health, 5600 Nathan Shock Dr., Baltimore, Maryland 21224, USA
| | - Qian-sheng Yu
- Drug Design & Development Section, Laboratory of Neurosciences, Gerontology Research Center, National Institute on Aging, National Institutes of Health, 5600 Nathan Shock Dr., Baltimore, Maryland 21224, USA
| | - Santosh S. Kulkarni
- Medicinal Chemistry Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, 5500 Nathan shock Dr., Baltimore, MD 21224, USA
| | - Damon A. Parrish
- Laboratory for the Structure of Matter, Department of the Navy, Naval Research Laboratory, Washington, D.C. 20375, USA
| | - Harold W. Holloway
- Drug Design & Development Section, Laboratory of Neurosciences, Gerontology Research Center, National Institute on Aging, National Institutes of Health, 5600 Nathan Shock Dr., Baltimore, Maryland 21224, USA
| | - David Tweedie
- Drug Design & Development Section, Laboratory of Neurosciences, Gerontology Research Center, National Institute on Aging, National Institutes of Health, 5600 Nathan Shock Dr., Baltimore, Maryland 21224, USA
| | - Avigdor Shafferman
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona, 74100 Israel
| | - Debomoy K. Lahiri
- Psychiatric Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Arnold Brossi
- School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina 27599, USA
| | - Nigel H. Greig
- Drug Design & Development Section, Laboratory of Neurosciences, Gerontology Research Center, National Institute on Aging, National Institutes of Health, 5600 Nathan Shock Dr., Baltimore, Maryland 21224, USA
- To whom correspondence should be addressed: Phone: 410-558-8278; Fax: 410-558-8323, E-Mail:
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Chapter 1 Natural compounds as antioxidant and molting inhibitors can play a role as a model for search of new botanical pesticides. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s1572-557x(06)03001-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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Francis PT, Nordberg A, Arnold SE. A preclinical view of cholinesterase inhibitors in neuroprotection: do they provide more than symptomatic benefits in Alzheimer's disease? Trends Pharmacol Sci 2005; 26:104-11. [PMID: 15681028 DOI: 10.1016/j.tips.2004.12.010] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The prevalence of Alzheimer's disease (AD), a neurodegenerative condition whose greatest risk factor is old age, is expected to rise dramatically during the next five decades, along with the trend for increased longevity. Early diagnosis and intervention with therapies that halt or slow disease progress are likely to represent an important component of effective treatment. Although much progress has been made in this area, there are currently no clinically approved interventions for AD that are classed as disease modifying or neuroprotective. Cholinesterase inhibitors are a drug class used for the symptomatic treatment of AD. Recent evidence from preclinical studies indicates that these agents can attenuate neuronal damage and death from cytotoxic insults, and therefore might affect AD pathogenesis. The mechanisms by which these actions are mediated might or might not be directly related to their primary mode of action.
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Affiliation(s)
- Paul T Francis
- Wolfson Centre for Age-Related Diseases, Guy's Campus, St Thomas Street, Kings College London, London SE1 1UL, UK.
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The synthesis and the structure elucidation of N,O-diacetyl derivative of cyclic 3-hydroxymelatonin. OPEN CHEM 2004. [DOI: 10.2478/bf02476198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractMelatonin was subjected to an oxidation to give 3-hydroxymelatonin. All spectroscopic data for this compound were collected. Ab initio calculations for both possible configurations were performed. X-ray data on N,O-diacetyl derivative of 3-hydroxymelatonin allowed the unambigous structure determination.
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