1
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Sundaramoorthy R, Vadivelu M, Karthikeyan K, Praveen C. Mechanosynthesis of Triazolyl-bis(indolyl)methane Pharmacophores via Gold Catalysis: A Prelude to Their Molecular Electronic Properties and Biological Potency. ChemMedChem 2023; 18:e202200529. [PMID: 36529707 DOI: 10.1002/cmdc.202200529] [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: 09/29/2022] [Revised: 11/26/2022] [Accepted: 12/17/2022] [Indexed: 12/23/2022]
Abstract
Chemical structures possessing both 1,2,3-triazole and bis(indolyl)methane fragments gained considerable interest in drug synthesis owing to their established biological efficacies. However, 1,2,3-triazoles linked at the bridging position of bis(indolyl)methane is a logical and unexplored design approach. In this regard, nine new triazolyl-bis(indolyl)methane conjugates under AuCl catalyzed ball-milling conditions were accomplished. Comparative evaluation on absorptive and emissive properties of the synthesized dyads were also analyzed. To unravel the influence of different peripheral substituents on the electronic structure and π-orbital properties, theoretical investigations were performed. Screening of molecules for free radical scavenging, anti-inflammatory and antidiabetic showed comparable potency against reference drugs. In particular, compounds 7 h, 7 d and 7 a displayed good efficiency of α-amylase inhibition. The DNA gyrase inhibitory potential of all compounds were assessed in silico which revealed high binding affinity (ΔG=-8.99 Kcal/mol) for 7 i followed by 7 h (ΔG=-7.80 Kcal/mol) with the targeted protein.
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Affiliation(s)
- Ramachandran Sundaramoorthy
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, Tamil Nadu, India
| | - Murugan Vadivelu
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, Tamil Nadu, India
| | - Kesavan Karthikeyan
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, Tamil Nadu, India
| | - Chandrasekar Praveen
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute, Karaikudi, 630003, Tamil Nadu, India
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2
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Mandal D, Kumar A, Patil NT. Gold catalysis in organic synthesis: fifteen years of research in India. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2022. [DOI: 10.1007/s43538-022-00106-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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3
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Li H, Zhu Y, Jiang C, Wei J, Liu P, Sun P. HOAc catalyzed three-component reaction for the synthesis of 3,3'-(arylmethylene)bis(1 H-indoles). Org Biomol Chem 2022; 20:3365-3374. [PMID: 35355039 DOI: 10.1039/d2ob00395c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient HOAc catalyzed three-component reaction of 2-(arylethynyl)anilines with arylaldehydes has been achieved, which leads to the generation of 3,3'-(arylmethylene)bis(1H-indoles) with good to excellent yields and high regioselectivity under transition-metal-free conditions. Four new C-C and C-N bonds were effectively formed in a one-pot procedure. Subsequent research on the reaction mechanism indicated that the reaction likely involved the processes of intramolecular cyclization and cascade intermolecular dehydration condensation.
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Affiliation(s)
- Heng Li
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China.
| | - Yan Zhu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China.
| | - Cong Jiang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China.
| | - Jia Wei
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China.
| | - Ping Liu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China.
| | - Peipei Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China.
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4
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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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5
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Aksenov AV, Aksenov NA, Aleksandrova EV, Aksenov DA, Grishin IY, Sorokina EA, Wenger A, Rubin M. Direct Conversion of 3-(2-Nitroethyl)-1 H-Indoles into 2-(1 H-Indol-2-yl)Acetonitriles. Molecules 2021; 26:6132. [PMID: 34684712 PMCID: PMC8539596 DOI: 10.3390/molecules26206132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 11/17/2022] Open
Abstract
The recently discovered [4+1]-spirocyclization of nitroalkenes to indoles provided a convenient new approach to 2-(1H-indol-2-yl)acetonitriles. However, this reaction was complicated by the formation of inert 3-(2-nitroethyl)-1H-indole byproducts. Herein, we offer a workaround this problem that allows for effective transformation of the unwanted byproducts into acetonitrile target molecules.
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Elena V. Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Igor Yu. Grishin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Elena A. Sorokina
- Organic Chemistry Department, Peoples’ Friendship University of Russia (RUDN University), 6, Miklukho-Maklaya St., 117198 Moscow, Russia;
| | - Allison Wenger
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA;
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA;
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6
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Wati FA, Santoso M, Moussa Z, Fatmawati S, Fadlan A, Judeh ZMA. Chemistry of trisindolines: natural occurrence, synthesis and bioactivity. RSC Adv 2021; 11:25381-25421. [PMID: 35478918 PMCID: PMC9037102 DOI: 10.1039/d1ra03091d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/11/2021] [Indexed: 01/18/2023] Open
Abstract
Heterocyclic nitrogen compounds are privileged structures with many applications in the pharmaceutical and nutraceutical industries since they possess wide bioactivities. Trisindolines are heterocyclic nitrogen compounds consisting of an isatin core bearing two indole moieties. Trisindolines have been synthesized by reacting isatins with indoles using various routes and the yield greatly depends on the catalyst used, reaction conditions, and the substituents on both the isatin and indole moieties. Amongst the synthetic routes, acid-catalyzed condensation reaction between isatins and indoles are the most useful due to high yield, wide scope and short reaction times. Trisindolines are biologically active compounds and show anticancer, antimicrobial, antitubercular, antifungal, anticonvulsant, spermicidal, and antioxidant activities, among others. Trisindolines have not previously been reviewed. Therefore, this review aims to provide a comprehensive account of trisindolines including their natural occurrence, routes of synthesis, and biological activities. It aims to inspire the discovery of lead trisindoline drug candidates for further development. This in-depth review of trisindolines covers their natural occurrence in addition to several routes of synthesis and catalysts used. The biological activities of trisindolines have been discussed with a special emphasis on the structure–activity relationship.![]()
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Affiliation(s)
- First Ambar Wati
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Mardi Santoso
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University P. O. Box 15551 Al Ain United Arab Emirates
| | - Sri Fatmawati
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Arif Fadlan
- Department of Chemistry, Institut Teknologi Sepuluh Nopember Kampus ITS, Sukolilo Surabaya 60111 Indonesia
| | - Zaher M A Judeh
- School of Chemical and Biomedical Engineering, Nanyang Technological University 62 Nanyang Drive, N1.2-B1-14 Singapore 637459 Singapore
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7
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Praveen C. Cycloisomerization of π-Coupled Heteroatom Nucleophiles by Gold Catalysis: En Route to Regiochemically Defined Heterocycles. CHEM REC 2021; 21:1697-1737. [PMID: 34061426 DOI: 10.1002/tcr.202100105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/08/2021] [Accepted: 05/11/2021] [Indexed: 11/06/2022]
Abstract
Since the dawn of millennium, catalytic gold chemistry is at the forefront to set off diverse organic reactions via unique activation of π-bonded molecules. Within this purview, cycloisomerization of heteroatom nucleophiles linked to a π-system is one of the well recognized chemistry for the construction of numerous heterocyclic cores. Though the rudimentary aspects of this transformation are reviewed by several groups in different timeline, a holistic view on regiochemistry of such reactions went largely overlooked. Hence, this account emphasizes the gold catalyzed regioselective cycloisomerization of structurally distinctive π-connected hetero-nucleophiles leading to different heterocycles documented in the last two decades. From an application perspective, this account also highlights those methodologies which find a role in the total synthesis of natural products. Wherever appropriate, mechanistic details and contributing factors for selectivity are also discussed.
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Affiliation(s)
- Chandrasekar Praveen
- Electrochemical Power Sources Division, Central Electrochemical Research Institute (CSIR Laboratory), Alagappapuram, Karaikudi, 630003, Sivagangai District, Tamil Nadu, India
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8
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Aksenov AV, Aksenov DA, Aksenov NA, Skomorokhov AA, Aleksandrova EV, Rubin M. Preparation of spiro[indole-3,5′-isoxazoles] via Grignard conjugate addition/spirocyclization sequence. RSC Adv 2021; 11:1783-1793. [PMID: 35424118 PMCID: PMC8693578 DOI: 10.1039/d0ra10219a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 12/21/2020] [Indexed: 12/25/2022] Open
Abstract
A highly efficient one-pot procedure combining conjugate addition of Grignard reagents to (2-nitroalkenyl)indoles and sub-sequent Brønsted acid-assisted spirocyclization allowed for preparation of 4′H-spiro[indole-3,5′-isoxazoles] in a diastereomerically selective fashion. Utilization of alkyl Grignard reagents provided an easy access to 4′-alkylsubstituted derivatives hardly available by other means. One-pot procedure combining conjugate addition of Grignard reagents to (2-nitroalkenyl)indoles and subsequent acid-assisted spirocyclization allowed for diastereoselective preparation of 4′H-spiro[indole-3,5′-isoxazoles].![]()
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Anton A. Skomorokhov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Elena V. Aleksandrova
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Michael Rubin
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
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9
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Khan I, Sharma A, Kamboj P, Maity B, Tyagi V. Base‐Mediated Reductive Coupling of Indole‐3‐tosylhydrazone with Thiols/Boronic Acids: Facile Synthesis of 3‐(phenylthio)methyl/benzyl Indole Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.201903863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Imran Khan
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Aanchal Sharma
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Priya Kamboj
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Banibrata Maity
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Vikas Tyagi
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
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10
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Neto JSS, Zeni G. Recent advances in the synthesis of indoles from alkynes and nitrogen sources. Org Chem Front 2020. [DOI: 10.1039/c9qo01315f] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review highlights ten years of success in the synthesis of indoles using alkynes and nitrogen sources as substrates.
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Affiliation(s)
- José Sebastião Santos Neto
- Laboratório de Síntese
- Reatividade
- Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE
- UFSM
- Santa Maria
| | - Gilson Zeni
- Laboratório de Síntese
- Reatividade
- Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE
- UFSM
- Santa Maria
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11
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Vadivelu M, Sampath S, Muthu K, Karthikeyan K, Praveen C. Harnessing the TEMPO-Catalyzed Aerobic Oxidation for Machetti-De Sarlo Reaction toward Sustainable Synthesis of Isoxazole Libraries. J Org Chem 2019; 84:13636-13645. [PMID: 31557022 DOI: 10.1021/acs.joc.9b01896] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A practical synthesis of isoxazole/isoxazoline derivatives via Machetti-De Sarlo reaction under sustainable conditions has been accomplished. This protocol involves the use of readily available 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) to catalyze the cyclocondensation of primary nitroalkanes with alkynes/alkenes to afford a library of isoxazole/isoxazoline products. From an eco-benign perspective, notable advantages of this method are as follows: (i) water as the solvent, (ii) air as the oxidant, (iii) transition metal-free, (iv) no base required, (v) no toxic byproduct, (vi) no need of solvent extraction, (vii) diverse substrate scope, (viii) high chemical yields, (ix) excellent chemo- and regioselectivity, (x) short reaction time, (xi) gram-scale synthesis, (xii) extension to heterogeneous version, and (xiii) catalyst recyclability. For these reasons, the developed method is appropriate for safe laboratory use and can be expected to inspire the progress of TEMPO-based organocatalysis for the preparation of isoxazole/isoxazoline moieties in an environmentally benign fashion.
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Affiliation(s)
- Murugan Vadivelu
- Department of Chemistry , B. S. Abdur Rahman Crescent Institute of Science and Technology , Vandalur , Chennai 600048 , Tamil Nadu , India
| | - Sugirdha Sampath
- Department of Chemistry , B. S. Abdur Rahman Crescent Institute of Science and Technology , Vandalur , Chennai 600048 , Tamil Nadu , India.,Department of Metallurgical & Materials Engineering , Indian Institute of Technology-Madras (IITM) , Chennai 600036 , Tamil Nadu , India
| | - Kesavan Muthu
- Interdisplinary Institute of Indian System of Medicine (IIISM) , SRM Institute of Science and Technology , Kattankulathur 603203 , Tamil Nadu , India
| | - Kesavan Karthikeyan
- Department of Chemistry , B. S. Abdur Rahman Crescent Institute of Science and Technology , Vandalur , Chennai 600048 , Tamil Nadu , India
| | - Chandrasekar Praveen
- Materials Electrochemistry Division , Central Electrochemical Research Institute (CSIR-Laboratory) , Alagappapuram , Karaikudi 630003 , Tamil Nadu , India.,Academy of Scientific and Innovative Research (AcSIR) , CECRI campus, Alagappapuram , Karaikudi 630003 , Tamil Nadu , India
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12
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Praveen C. Carbophilic activation of π-systems via gold coordination: Towards regioselective access of intermolecular addition products. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.04.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Savvidou A, IoannisTzaras D, Koutoulogenis GS, Theodorou A, Kokotos CG. Synthesis of Benzofuran and Indole Derivatives Catalyzed by Palladium on Carbon. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900577] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Anatoli Savvidou
- Laboratory of Organic Chemistry; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| | - Dimitrios IoannisTzaras
- Laboratory of Organic Chemistry; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| | - Giorgos S. Koutoulogenis
- Laboratory of Organic Chemistry; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| | - Alexis Theodorou
- Laboratory of Organic Chemistry; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| | - Christoforos G. Kokotos
- Laboratory of Organic Chemistry; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
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14
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Tseng CC, Baillie G, Donvito G, Mustafa MA, Juola SE, Zanato C, Massarenti C, Dall'Angelo S, Harrison WTA, Lichtman AH, Ross RA, Zanda M, Greig IR. The Trifluoromethyl Group as a Bioisosteric Replacement of the Aliphatic Nitro Group in CB 1 Receptor Positive Allosteric Modulators. J Med Chem 2019; 62:5049-5062. [PMID: 31050898 DOI: 10.1021/acs.jmedchem.9b00252] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The first generation of CB1 positive allosteric modulators (e.g., ZCZ011) featured a 3-nitroalkyl-2-phenyl-indole structure. Although a small number of drugs include the nitro group, it is generally not regarded as being "drug-like", and this is particularly true for aliphatic nitro groups. There are very few case studies where an appropriate bioisostere replaced a nitro group that had a direct role in binding. This may be indicative of the difficulty of replicating its binding interactions. Herein, we report the design and synthesis of ligands targeting the allosteric binding site on the CB1 cannabinoid receptor, in which a CF3 group successfully replaced the aliphatic NO2. In general, the CF3-bearing compounds were more potent than their NO2 equivalents and also showed improved in vitro metabolic stability. The CF3 analogue (1) with the best balance of properties was selected for further pharmacological evaluation. Pilot in vivo studies showed that (±)-1 has similar activity to (±)-ZCZ011, with both showing promising efficacy in a mouse model of neuropathic pain.
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Affiliation(s)
- Chih-Chung Tseng
- Kosterlitz Centre for Therapeutics , University of Aberdeen , Foresterhill, Aberdeen , AB25 2ZD Scotland, U.K
| | - Gemma Baillie
- Department of Pharmacology & Toxicology , University of Toronto , Toronto M5S 1A8 , Canada
| | | | | | | | - Chiara Zanato
- Kosterlitz Centre for Therapeutics , University of Aberdeen , Foresterhill, Aberdeen , AB25 2ZD Scotland, U.K
| | - Chiara Massarenti
- Kosterlitz Centre for Therapeutics , University of Aberdeen , Foresterhill, Aberdeen , AB25 2ZD Scotland, U.K
| | - Sergio Dall'Angelo
- Kosterlitz Centre for Therapeutics , University of Aberdeen , Foresterhill, Aberdeen , AB25 2ZD Scotland, U.K
| | - William T A Harrison
- Department of Chemistry , University of Aberdeen , Meston Walk, Aberdeen , AB24 3UE Scotland, U.K
| | | | - Ruth A Ross
- Department of Pharmacology & Toxicology , University of Toronto , Toronto M5S 1A8 , Canada
| | - Matteo Zanda
- Kosterlitz Centre for Therapeutics , University of Aberdeen , Foresterhill, Aberdeen , AB25 2ZD Scotland, U.K.,C.N.R. - I.C.R.M. , via Mancinelli 7 , 20131 Milan , Italy
| | - Iain R Greig
- Kosterlitz Centre for Therapeutics , University of Aberdeen , Foresterhill, Aberdeen , AB25 2ZD Scotland, U.K
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15
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Aksenov AV, Aksenov DA, Arutiunov NA, Aksenov NA, Aleksandrova EV, Zhao Z, Du L, Kornienko A, Rubin M. Synthesis of Spiro[indole-3,5′-isoxazoles] with Anticancer Activity via a Formal [4 + 1]-Spirocyclization of Nitroalkenes to Indoles. J Org Chem 2019; 84:7123-7137. [DOI: 10.1021/acs.joc.9b00808] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nikolai A. Arutiunov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Elena V. Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Zhenze Zhao
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Liqin Du
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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16
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17
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Golushko AA, Sandzhieva MA, Ivanov AY, Boyarskaya IA, Khoroshilova OV, Barkov AY, Vasilyev AV. Reactions of 3,3,3-Trihalogeno-1-nitropropenes with Arenes in the Superacid CF 3SO 3H: Synthesis of ( Z)-3,3,3-Trihalogeno-1,2-diarylpropan-1-one Oximes and Study on the Reaction Mechanism. J Org Chem 2018; 83:10142-10157. [PMID: 30004232 DOI: 10.1021/acs.joc.8b01406] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
3,3,3-Trihalogeno-1-nitropropenes C(Hal3)CH═CH(NO2) (Hal = F, Cl, Br) in reaction with arenes in the superacid CF3SO3H (TfOH) at room temperature in 1 h afford 3,3,3-trihalogeno-1,2-diarylpropan-1-one oximes C(Hal3)CH(Ar)-C(Ar)═NOH (CHal3-oximes) in yields of 23-99%. Such CHal3-oximes having one ortho-substituent in the aryl ring exist as atropoisomers in solutions at room temperature. Several cationic intermediates of this reaction were studied by means of NMR and DFT calculations, which proves the detailed reaction mechanism of the formation of CHal3-oximes in TfOH. CHal3-oximes (for Hal = Cl, Br) with DBU in DMF at microwave or thermal activation are cyclized into 5-halogeno-3,4-diarylisoxazoles in yields of 37-59%. CHal3-oximes under the conditions of Beckmann rearrangement with PCl5 in benzene at room temperature in 24 h are turned at first into imidoyl chlorides (yields of 94-96%), which undergo transformation into the corresponding benzamides PhCONHCHPh(CHal3) on silica gel (yields of 46-47%).
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Affiliation(s)
- Andrei A Golushko
- Department of Organic Chemistry, Institute of Chemistry , Saint Petersburg State University , Universitetskaya nab., 7/9 , Saint Petersburg , 199034 , Russia
| | - Maria A Sandzhieva
- Department of Chemistry , Saint Petersburg State Forest Technical University , Institutsky per., 5 , Saint Petersburg , 194021 , Russia
| | - Alexander Yu Ivanov
- Center for Magnetic Resonance, Research Park , St. Petersburg State University , Universitetskiy pr., 26 , Saint Petersburg , Petrodvoretz 198504 , Russia
| | - Irina A Boyarskaya
- Department of Organic Chemistry, Institute of Chemistry , Saint Petersburg State University , Universitetskaya nab., 7/9 , Saint Petersburg , 199034 , Russia
| | - Olesya V Khoroshilova
- Center for X-ray Diffraction Studies, Research Park , St. Petersburg State University , Universitetskiy pr., 26 , Saint Petersburg , Petrodvoretz 198504 , Russia
| | - Alexey Yu Barkov
- Institute of Natural Sciences and Mathematics , Ural Federal University , Mira str., 19 , Yekaterinburg , 620000 , Russia
| | - Aleksander V Vasilyev
- Department of Organic Chemistry, Institute of Chemistry , Saint Petersburg State University , Universitetskaya nab., 7/9 , Saint Petersburg , 199034 , Russia.,Department of Chemistry , Saint Petersburg State Forest Technical University , Institutsky per., 5 , Saint Petersburg , 194021 , Russia
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18
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Chaisan N, Kaewsri W, Thongsornkleeb C, Tummatorn J, Ruchirawat S. PtCl4-catalyzed cyclization of N-acetyl-2-alkynylanilines: A mild and efficient synthesis of N-acetyl-2-substituted indoles. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Jillella R, Oh DH, Oh CH. Gold-catalyzed tandem reaction of 2-alkynylanilines followed by 1,6-conjugate addition to p-quinone methides: efficient access to unsymmetrical diarylindolylmethanes. NEW J CHEM 2018. [DOI: 10.1039/c8nj03955k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A simple, mild, efficient and chemoselective catalytic method for the straightforward synthesis of an interesting class of 2-aryl/alkyl-substituted-3-diaryl indolyl methanes in high yield is reported.
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Affiliation(s)
- Raveendra Jillella
- Department of Chemistry and Research Institute of Natural Science
- Hanyang University
- Seoul 04763
- South Korea
| | - Dong hwan Oh
- Department of Chemistry and Research Institute of Natural Science
- Hanyang University
- Seoul 04763
- South Korea
| | - Chang Ho Oh
- Department of Chemistry and Research Institute of Natural Science
- Hanyang University
- Seoul 04763
- South Korea
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20
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Dagar A, Guin S, Samanta S. AgSbF6
-Catalyzed Tandem Reaction of 2-Alkynylanilines with Cyclic Enynones: Efficient access to 3-Furo[3,2-c
]chromenylindoles and Related Scaffolds. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700511] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Anuradha Dagar
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
| | - Soumitra Guin
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
| | - Sampak Samanta
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
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21
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Parthasarathy K, Ponpandian T, Praveen C. Gold-catalyzed addition reaction between creatinine and isatin: A sustainable and green chemistry approach for the diastereoselective synthesis of 3-substituted-3-hydroxyisatins. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62812-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Three-component Au—Chitosan—SiO2 systems as heterogeneous catalysts for intramolecular cyclization of 2-(2-phenylethynyl)aniline. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1232-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Gold catalyzed double condensation reaction: Synthesis, antimicrobial and cytotoxicity of spirooxindole derivatives. Bioorg Med Chem Lett 2016; 26:4310-7. [DOI: 10.1016/j.bmcl.2016.07.036] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/07/2016] [Accepted: 07/18/2016] [Indexed: 12/13/2022]
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24
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Parthasarathy K, Praveen C, Saranraj K, Balachandran C, Kumar PS. Synthesis, antimicrobial and cytotoxic evaluation of spirooxindole[pyrano-bis-2H-l-benzopyrans]. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1645-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Praveen C, Ananth DB. Design, synthesis and cytotoxicity of pyrano[4,3-b]indol-1(5H)-ones: A hybrid pharmacophore approach via gold catalyzed cyclization. Bioorg Med Chem Lett 2016; 26:2507-2512. [DOI: 10.1016/j.bmcl.2016.03.087] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 03/16/2016] [Accepted: 03/25/2016] [Indexed: 01/29/2023]
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26
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JEYAVEERAN JC, PRAVEEN CHANDRASEKAR, ARUN Y, PRINCE AAM, PERUMAL PT. Flexible synthesis of isomeric pyranoindolones and evaluation of cytotoxicity towards HeLa cells. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1070-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Praveen C, Perumal PT. Extrapolation of the gold-catalyzed cycloisomerization to the palladium-catalyzed cross-coupling/cycloisomerization of acetylenic alcohols for the synthesis of polysubstituted furans: Scope and application to tandem processes. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)60994-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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One-pot synthesis of spirofluorenyl- and spiroindeno[1,2- b ]indolyl oxindoles via sequential inter- and intramolecular Friedel–Crafts reactions. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.11.080] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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29
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Debrouwer W, Heugebaert TSA, Roman BI, Stevens CV. Homogeneous Gold-Catalyzed Cyclization Reactions of Alkynes withN- andS-Nucleophiles. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500520] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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30
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Galenko AV, Khlebnikov AF, Novikov MS, Pakalnis VV, Rostovskii NV. Recent advances in isoxazole chemistry. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4503] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Arenes and Hetarenes in Reactions with unsaturated Nitro Compounds (Review). Chem Heterocycl Compd (N Y) 2014. [DOI: 10.1007/s10593-014-1514-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Lancianesi S, Palmieri A, Petrini M. Synthetic Approaches to 3-(2-Nitroalkyl) Indoles and Their Use to Access Tryptamines and Related Bioactive Compounds. Chem Rev 2014; 114:7108-49. [DOI: 10.1021/cr400676v] [Citation(s) in RCA: 238] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Stefano Lancianesi
- School
of Science and Technology,
Chemistry Division, Università di Camerino, via S. Agostino,
1, I-62032 Camerino, Italy
| | - Alessandro Palmieri
- School
of Science and Technology,
Chemistry Division, Università di Camerino, via S. Agostino,
1, I-62032 Camerino, Italy
| | - Marino Petrini
- School
of Science and Technology,
Chemistry Division, Università di Camerino, via S. Agostino,
1, I-62032 Camerino, Italy
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33
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Microwave assisted InCl3 mediated regioselective synthesis of highly functionalized indolylpyran under solvent-free condition and its chemical transformation to indolyltriazolylpyran hybrids. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.04.104] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Karthikeyan K, Kumar RS, Dheenkumar P, Perumal PT. Solvent and catalyst free route to 3-indolyl glycoconjugates: synthesis of sugar tethered isoxazolines and isoxazoles from 3-indolyl nitroalkanes. RSC Adv 2014. [DOI: 10.1039/c4ra02825b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
An expedient, solvent and catalyst free strategy for the synthesis of sugar based bis(indolyl)methanes and indolyl nitroalkanes has been developed. Further, the nitroalkanes were converted to novel isoxazolines and isoxazoles by nitrile oxides cycloaddition.
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Affiliation(s)
- K. Karthikeyan
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai, India
- Department of Chemistry
- B. S. Abdur Rahman University
| | - R. Senthil Kumar
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai, India
| | - P. Dheenkumar
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai, India
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35
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Korotaev VY, Sosnovskikh VY, Barkov AY. Synthesis and properties of 3-nitro-2H-chromenes. RUSSIAN CHEMICAL REVIEWS 2013. [DOI: 10.1070/rc2013v082n12abeh004370] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Abbiati G, Marinelli F, Rossi E, Arcadi A. Synthesis of Indole Derivatives from 2-Alkynylanilines by Means of Gold Catalysis. Isr J Chem 2013. [DOI: 10.1002/ijch.201300040] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Lakshmi NV, Kiruthika SE, Perumal P. Multicomponent assembly of 2-amino-4-substituted 4H-chromenes using cyclic Michael donors. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0552] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An efficient one-pot synthesis has been disclosed to access a series of 2-amino-4-substituted 4H-chromenes from salicylaldehyde, malononitrile, and a few cyclic nucleophiles using indium trichloride as a catalyst. This methodology affords high yields of products in a shorter reaction time.
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Affiliation(s)
- Neelakandan Vidhya Lakshmi
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020 Tamilnadu, India
| | - Selvarangam E. Kiruthika
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020 Tamilnadu, India
| | - P.T. Perumal
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020 Tamilnadu, India
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38
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Subba Reddy BV, Swain M, Reddy SM, Yadav JS, Sridhar B. Gold-catalyzed domino cycloisomerization/Pictet-Spengler reaction of 2-(4-aminobut-1-yn-1-yl)anilines with aldehydes: synthesis of tetrahydropyrido[4,3-b]indole scaffolds. J Org Chem 2012. [PMID: 23205599 DOI: 10.1021/jo302068e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A domino cycloisomerization/Pictet-Spengler reaction of 2-(4-aminobut-1-yn-1-yl)aniline with aldehydes has been achieved using a AuIPrCl (5 mol %)/AgSbF(6) (10 mol %) catalytic system to produce the corresponding 1-aryl-N-tosyl-2,3,4,5-tetrahydropyrido[4,3-b] indole derivatives in good yields. This is the first report on the synthesis of tetrahydro pyrido[4,3-b]indole scaffolds through as tandem 5-endo-dig cyclization and Pictect-Spengler reaction.
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Affiliation(s)
- B V Subba Reddy
- Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.
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39
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Cera G, Piscitelli S, Chiarucci M, Fabrizi G, Goggiamani A, Ramón RS, Nolan SP, Bandini M. One-Pot Gold-Catalyzed Synthesis of Azepino[1,2-a]indoles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205463] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Cera G, Piscitelli S, Chiarucci M, Fabrizi G, Goggiamani A, Ramón RS, Nolan SP, Bandini M. One-Pot Gold-Catalyzed Synthesis of Azepino[1,2-a]indoles. Angew Chem Int Ed Engl 2012; 51:9891-5. [DOI: 10.1002/anie.201205463] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Indexed: 11/11/2022]
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41
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Kilic H, Bayindir S, Erdogan E, Saracoglu N. Synthesis of highly N-substituted indole library via conjugate additions of indoline and their synthetic tool potentials. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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42
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Microwave-assisted one-pot synthesis of benzothiazole and benzoxazole libraries as analgesic agents. J CHEM SCI 2012. [DOI: 10.1007/s12039-012-0251-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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43
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Ding Q, Liu X, Yu J, Zhang Q, Wang D, Cao B, Peng Y. Access to functionalized 4-benzylidene-4H-benzo[d][1,3]thiazines via tandem addition-cyclization/cross-coupling reactions. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.098] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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44
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Regioselective synthesis and evaluation of 3-alkylidene-1, 3-dihydroisobenzofurans as potential antidepressant agents. J CHEM SCI 2012. [DOI: 10.1007/s12039-011-0150-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Politanskaya LV, Chuikov IP, Kolodina ЕА, Shvartsberg MS, Shteingarts VD. Synthesis of polyfluorinated ortho-alkynylanilines. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2011.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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46
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Abbiati G, Arcadi A, Chiarini M, Marinelli F, Pietropaolo E, Rossi E. An alternative one-pot gold-catalyzed approach to the assembly of 11H-indolo[3,2-c]quinolines. Org Biomol Chem 2012; 10:7801-8. [DOI: 10.1039/c2ob26380g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Corma A, Leyva-Pérez A, Sabater MJ. Gold-catalyzed carbon-heteroatom bond-forming reactions. Chem Rev 2011; 111:1657-712. [PMID: 21391565 DOI: 10.1021/cr100414u] [Citation(s) in RCA: 1111] [Impact Index Per Article: 85.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- A Corma
- Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, Avenida Los Naranjos s/n, 46022, Valencia, Spain.
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48
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Praveen C, Ayyanar A, Perumal PT. Practical synthesis, anticonvulsant, and antimicrobial activity of N -allyl and N -propargyl di(indolyl)indolin-2-ones. Bioorg Med Chem Lett 2011; 21:4072-7. [DOI: 10.1016/j.bmcl.2011.04.117] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Revised: 04/23/2011] [Accepted: 04/25/2011] [Indexed: 11/16/2022]
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49
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Praveen C, Ayyanar A, Perumal PT. Gold(III) chloride catalyzed regioselective synthesis of pyrano[3,4-b]indol-1(9H)-ones and evaluation of anticancer potential towards human cervix adenocarcinoma. Bioorg Med Chem Lett 2011; 21:4170-3. [DOI: 10.1016/j.bmcl.2011.05.088] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 05/22/2011] [Accepted: 05/24/2011] [Indexed: 10/18/2022]
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50
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Brand JP, Chevalley C, Waser J. One-pot gold-catalyzed synthesis of 3-silylethynyl indoles from unprotected o-alkynylanilines. Beilstein J Org Chem 2011; 7:565-9. [PMID: 21647264 PMCID: PMC3107533 DOI: 10.3762/bjoc.7.65] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 03/09/2011] [Indexed: 01/20/2023] Open
Abstract
The Au(III)-catalyzed cyclization of 2-alkynylanilines was combined in a one-pot procedure with the Au(I)-catalyzed C3-selective direct alkynylation of indoles using the benziodoxolone reagent TIPS-EBX to give a mild, easy and straightforward entry to 2-substituted-3-alkynylindoles. The reaction can be applied to unprotected anilines, was tolerant to functional groups and easy to carry out (RT, and requires neither an inert atmosphere nor special solvents).
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Affiliation(s)
- Jonathan P Brand
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH4306, 1015 Lausanne, Switzerland
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