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Guo FW, Gao Y, Gu YC, Shao CL. Scalable total synthesis of aflaquinolone I and confirmation of the absolute configuration. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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2
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Samigullina AI, Galimullina VR, Kadyrova SF, Krivolapov DB, Mamedov VA, Gubaidullin AT. FEATURES OF THE CRYSTAL STRUCTURES OF THREE POLYMORPHS OF (RS,SR)-1-BENZYL- 3-(α,4-DICHLOROBENZYL)-3-HYDROXYINDOLIN-2-ONE. J STRUCT CHEM+ 2023. [DOI: 10.1134/s0022476623020026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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3
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Construction of tetralin and chromane cores by the Lewis acid promoted ring-opening cyclization of cyclopropyl methanesulfonates. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Mamedov VA, Galimullina VR, Kadyrova SF, Rizvanov IK, Latypov SK. A concise synthesis of indolin-2-ones via direct acid-catalyzed intramolecular Friedel-Crafts alkylation of 3-chloro-N-(substituted)-2-oxo-N,3-diarylpropanamides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mamedov VA, Mamedova VL, Qu ZW, Zhu H, Galimullina VR, Korshin DE, Khikmatova GZ, Litvinov IA, Latypov SK, Sinyashin OG, Grimme S. Synthesis and Mechanistic Insights of the Formation of 3-Hydroxyquinolin-2-ones including Viridicatin from 2-Chloro- N,3-diaryloxirane-2-carboxamides under Acid-Catalyzed Rearrangements. J Org Chem 2021; 86:13514-13534. [PMID: 34505764 DOI: 10.1021/acs.joc.1c01592] [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
N-Benzyl-2-chloro-N,3-diaryloxirane-2-carboxamides, easily obtained from aromatic aldehydes and anilides of dichloroacetic acid under Darzens condensation conditions, proved to be excellent starting compounds for the synthesis of 3-hydroxyindolin-2-ones, cyclohepto[b]pyrrole-2,3-diones, and 1-azaspiro[4.5]deca-3,6,9-triene-2-ones via the C(sp2)-C(sp2) bond formation in the first case and C(sp2)-C(sp3) bond formation in the second and third cases. Under optimized reaction conditions, 3-hydroxyindolin-2-ones are obtained in a one-pot process, which involves the treatment of N-benzyl-2-chloro-N,3-diaryloxirane-2-carboxamides with CF3CO2H or AcOH/H2SO4. In the case of intramolecular cyclization, the detailed reaction channels depend strongly on the substituents present in the anilide component and in the aromatic ring of the aldehyde component of N-benzyl-2-chloro-N,3-diaryloxirane-2-carboxamides, as well as the temperature and duration of the reaction. A combined experimental and DFT mechanistic study of the formation of 1-benzyl-3-hydroxy-4-arylquinolin-2(1H)-ones showed that there are three competing reaction channels: (a) ring-closure via the ipso site, (b) ring-closure via the 1,2-Cl shift, and (c) ring-closure via the ortho site. Such mechanistic insights enabled an effective one-pot gram-scale synthesis of viridicatin from benzaldehyde and 2,2-dichloro-N-(4-methoxybenzyl)-N-phenylacetamide.
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Affiliation(s)
- Vakhid A Mamedov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Vera L Mamedova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry University of Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry University of Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Venera R Galimullina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Dmitry E Korshin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Gul'naz Z Khikmatova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Igor A Litvinov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Shamil K Latypov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Oleg G Sinyashin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry University of Bonn, Beringstr. 4, 53115 Bonn, Germany
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Singh A, Maji A, Joshi M, Choudhury AR, Ghosh K. Designed pincer ligand supported Co(II)-based catalysts for dehydrogenative activation of alcohols: Studies on N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Dalton Trans 2021; 50:8567-8587. [PMID: 34075925 DOI: 10.1039/d0dt03748f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Base-metal catalysts Co1, Co2 and Co3 were synthesized from designed pincer ligands L1, L2 and L3 having NNN donor atoms respectively. Co1, Co2 and Co3 were characterized by IR, UV-Vis. and ESI-MS spectroscopic studies. Single crystal X-ray diffraction studies were investigated to authenticate the molecular structures of Co1 and Co3. Catalysts Co1, Co2 and Co3 were utilized to study the dehydrogenative activation of alcohols for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Under optimized reaction conditions, a broad range of substrates including alcohols, anilines and ketones were exploited. A series of control experiments for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines were examined to understand the reaction pathway. ESI-MS spectral studies were investigated to characterize cobalt-alkoxide and cobalt-hydride intermediates. Reduction of styrene by evolved hydrogen gas during the reaction was investigated to authenticate the dehydrogenative nature of the catalysts. Probable reaction pathways were proposed for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines on the basis of control experiments and detection of reaction intermediates.
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Affiliation(s)
- Anshu Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
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Marine Heterocyclic Compounds That Modulate Intracellular Calcium Signals: Chemistry and Synthesis Approaches. Mar Drugs 2021; 19:md19020078. [PMID: 33572583 PMCID: PMC7911796 DOI: 10.3390/md19020078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 11/21/2022] Open
Abstract
Intracellular Ca2+ plays a pivotal role in the control of a large series of cell functions in all types of cells, from neurotransmitter release and muscle contraction to gene expression, cell proliferation and cell death. Ca2+ is transported through specific channels and transporters in the plasma membrane and subcellular organelles such as the endoplasmic reticulum and mitochondria. Therefore, dysregulation of intracellular Ca2+ homeostasis may lead to cell dysfunction and disease. Accordingly, chemical compounds from natural origin and/or synthesis targeting directly or indirectly these channels and proteins may be of interest for the treatment of cell dysfunction and disease. In this review, we show an overview of a group of marine drugs that, from the structural point of view, contain one or various heterocyclic units in their core structure, and from the biological side, they have a direct influence on the transport of calcium in the cell. The marine compounds covered in this review are divided into three groups, which correspond with their direct biological activity, such as compounds with a direct influence in the calcium channel, compounds with a direct effect on the cytoskeleton and drugs with an effect on cancer cell proliferation. For each target, we describe its bioactive properties and synthetic approaches. The wide variety of chemical structures compiled in this review and their significant medical properties may attract the attention of many different researchers.
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Hwu JR, Panja A, Gupta NK, Hu Y, Tan K, Lin C, Hwang K, Hsu M, Huang W, Tsay S. Domino Processes of Arynes Reacting with Three Classes of Nucleophiles for Organic Syntheses. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001499] [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)
- Jih Ru Hwu
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
| | - Avijit Panja
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
| | - Nitesh K. Gupta
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
| | - Yu‐Chen Hu
- Department of Chemical Engineering National Tsing Hua University Hsinchu 30013 Taiwan
| | - Kui‐Thong Tan
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
| | - Chun‐Cheng Lin
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
| | - Kuo‐Chu Hwang
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
| | - Ming‐Hua Hsu
- Department of Chemistry National Changhua University of Education Changhua County 50007 Taiwan
| | - Wen‐Chieh Huang
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
| | - Shwu‐Chen Tsay
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
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Szymor-Pietrzak D, Khan MN, Pagès A, Kumar A, Depner N, Clive DLJ. Formation of 3-Aminophenols from Cyclohexane-1,3-diones. J Org Chem 2021; 86:619-631. [PMID: 33274938 DOI: 10.1021/acs.joc.0c02284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
meta-Aminophenols are formed by the action of DBU on 3-amino-2-chlorocyclohex-2-en-1-ones at room temperature in MeCN. The chloro compounds are generated by treating 3-aminocyclohex-2-en-1-ones with the easily prepared halogenating agent BnNMe3·ICl2 in MeOH-CH2Cl2. The amino group must carry two substituents, either two aryl, one aryl and one alkyl, or two alkyl groups; 3-aminocyclohex-2-en-1-ones of this type are readily made from cyclohex-2-en-1-one and a primary or secondary amine.
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Affiliation(s)
- Damian Szymor-Pietrzak
- Undergraduate research participant, Chemistry Department, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Muhammad N Khan
- Visiting Scholar from the Chemistry Department, COMSATS University, Islamabad, Abbottabad Campus, Abbottabad 22010, Pakistan
| | - Anaïs Pagès
- Research Intern from Ecole Nationale Supérieure d'Ingénieurs de Caen, Caen 14050, France
| | - Ajay Kumar
- Visiting Scholar from the Chemistry Department, Indian Institute of Technology (IIT), Gandhinagar 382355, India
| | - Noah Depner
- Undergraduate research participant, Chemistry Department, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Derrick L J Clive
- Chemistry Department, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Mamedov VA, Mamedova VL, Syakaev VV, Voronina JK, Mahrous EM, Korshin DE, Latypov SK, Sinyashin OG. Regioselective syntheses of 3-hydroxy-4-aryl-3,4,5-trihydro-2H-benzo[b][1,4]diazepin-2(1H)-ones and 3-benzylquinoxalin-2(1H)-ones from arylglycidates when exposed to 1,2-diaminobenzenes. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Kashapov RR, Lykova AA, Mamedova VL, Kadyrova SF, Sapunova AS, Voloshina AD, Mamedov VA, Zakharova LY. Solubility and biological activity enhancement of the highly lipophilic viridicatins via interaction with cyclodextrins. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Qu Z, Zhu H, Katsyuba SA, Mamedova VL, Mamedov VA, Grimme S. Acid-Catalyzed Rearrangements of 3-Aryloxirane-2-Carboxamides: Novel DFT Mechanistic Insights. ChemistryOpen 2020; 9:743-747. [PMID: 32626644 PMCID: PMC7327482 DOI: 10.1002/open.202000110] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/20/2020] [Indexed: 11/28/2022] Open
Abstract
Efficient synthesis of 3-arylquinolin-2(1H)-ones and N-(2-carboxyaryl)-oxalamides from protic acid-catalyzed rearrangements of 3-aryloxirane-2-carboxamides was achieved recently but not well understood. In contrast to the classical Meinwald rearrangement, extensive DFT calculations reveal that the proximal aryl and amide groups have strong synergetic effects to control the amide-aided and aryl-directed oxirane-opening and further rearrangement sequences. The ortho-nitro substituent of the proximal aryl is directly involved in a nucleophilic oxirane ring-opening, the amide C=O is an important proton shuttle for facile H-shifts, while the N-aryl may act as a potential ring-closing site via Friedel-Crafts alkylation. The mechanistic insights are useful for rational design of novel synthesis by changing the aryl and amide functional groups proximal to the oxirane ring.
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Affiliation(s)
- Zheng‐Wang Qu
- Mulliken Center for Theoretical ChemistryUniversity of BonnBeringstr. 453115BonnGermany
| | - Hui Zhu
- Mulliken Center for Theoretical ChemistryUniversity of BonnBeringstr. 453115BonnGermany
| | - Sergey A. Katsyuba
- Arbuzov Institute of Organic and Physical Chemistry FRCKazan Scientific Center of RASArbuzov Str. 8420088KazanRussia
| | - Vera L. Mamedova
- Arbuzov Institute of Organic and Physical Chemistry FRCKazan Scientific Center of RASArbuzov Str. 8420088KazanRussia
| | - Vakhid A. Mamedov
- Arbuzov Institute of Organic and Physical Chemistry FRCKazan Scientific Center of RASArbuzov Str. 8420088KazanRussia
| | - Stefan Grimme
- Mulliken Center for Theoretical ChemistryUniversity of BonnBeringstr. 453115BonnGermany
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Sadhukhan S, Santhi J, Baire B. The α,α‐Dihalocarbonyl Building Blocks: An Avenue for New Reaction Development in Organic Synthesis. Chemistry 2020; 26:7145-7175. [DOI: 10.1002/chem.201905475] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/08/2020] [Indexed: 01/04/2023]
Affiliation(s)
- Santu Sadhukhan
- Department of ChemistryIndian Institute of Technology Madras Chennai 600036 India
| | - Jampani Santhi
- Department of ChemistryIndian Institute of Technology Madras Chennai 600036 India
| | - Beeraiah Baire
- Department of ChemistryIndian Institute of Technology Madras Chennai 600036 India
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