1
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da Silva G, Luz AFS, Duarte D, Fontinha D, Silva VLM, Almeida Paz FA, Madureira AM, Simões S, Prudêncio M, Nogueira F, Silva AMS, Moreira R. Facile Access to Structurally Diverse Antimalarial Indoles Using a One-Pot A 3 Coupling and Domino Cyclization Approach. ChemMedChem 2023; 18:e202300264. [PMID: 37392377 DOI: 10.1002/cmdc.202300264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/30/2023] [Accepted: 06/30/2023] [Indexed: 07/03/2023]
Abstract
A multistep and diversity-oriented synthetic route aiming at the A3 coupling/domino cyclization of o-ethynyl anilines, aldehydes and s-amines is described. The preparation of the corresponding precursors included a series of transformations, such as haloperoxidation and Sonogashira cross-coupling reactions, amine protection, desilylation and amine reduction. Some products of the multicomponent reaction underwent further detosylation and Suzuki coupling. The resulting library of structurally diverse compounds was evaluated against blood and liver stage malaria parasites, which revealed a promising lead with sub-micromolar activity against intra-erythrocytic forms of Plasmodium falciparum. The results from this hit-to-lead optimization are hereby reported for the first time.
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Affiliation(s)
- Gustavo da Silva
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - André F S Luz
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
| | - Denise Duarte
- GHTM - Global Health and Tropical Medicine, Universidade Nova de Lisboa, Rua da Junqueira n° 100, 1349-008, Lisboa, Portugal
| | - Diana Fontinha
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Vera L M Silva
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Filipe A Almeida Paz
- Department of Chemistry & CICECO -, Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Ana M Madureira
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
| | - Sandra Simões
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
| | - Miguel Prudêncio
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Fátima Nogueira
- GHTM - Global Health and Tropical Medicine, Universidade Nova de Lisboa, Rua da Junqueira n° 100, 1349-008, Lisboa, Portugal
| | - Artur M S Silva
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Rui Moreira
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
- GHTM - Global Health and Tropical Medicine, Universidade Nova de Lisboa, Rua da Junqueira n° 100, 1349-008, Lisboa, Portugal
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Rastogi SK, Singh R, Kumar S, Mishra AK, Ahirwar MB, Deshmukh MM, Sinha AK, Kumar R. One-pot C-C, C-N, and C-S bond construction for synthesis of 3-sulfenylindoles directly from unactivated anilines involving dual palladium catalysis and mechanistic insights from DFT. Org Biomol Chem 2023; 21:838-845. [PMID: 36602157 DOI: 10.1039/d2ob01606k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient dual Pd-catalytic system was developed for one-pot synthesis of 3-sulfenylindoles via C-C, C-N and C-S bond construction directly from unactivated 2-iodo(NH)anilines under mild reaction conditions. Furthermore, 3-selenyl/halo/carbon-functionalized indoles were synthesized in good yields and a short reaction time. The synthetic utility of 3-sulfenylindole was also demonstrated. The key role of solvent in palladium catalysis was unravelled by DFT.
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Affiliation(s)
- Sumit K Rastogi
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India
| | - Richa Singh
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Department of Chemistry, Gaya College, Gaya, Bihar-823001, India
| | - Santosh Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India
| | - Abhishek Kumar Mishra
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India.
| | - Mini Bharati Ahirwar
- Department of Chemistry, Dr Harisingh Gour Vishwavidyalaya (A Central University), Sagar, India
| | - Milind M Deshmukh
- Department of Chemistry, Dr Harisingh Gour Vishwavidyalaya (A Central University), Sagar, India
| | - Arun K Sinha
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India.,Ranchi University, Ranchi, Jharkhand-834001, India
| | - Ravindra Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India
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3
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Points GL, Beaudry CM. Regioselective Synthesis of Substituted Carbazoles, Bicarbazoles, and Clausine C. Org Lett 2021; 23:6882-6885. [PMID: 34424701 DOI: 10.1021/acs.orglett.1c02449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Substituted carbazoles are efficiently constructed from 3-triflato-2-pyrones and alkynyl anilines. Multiple substituents are tolerated on the carbazole, and complete control of regiochemistry is observed. Complicated and sterically congested substitution patterns are produced. This strategy is also used to prepare substituted bicarbazoles and related biaryls. Finally, the method was showcased in a synthesis of the carbazole natural product clausine C.
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Affiliation(s)
- Gary L Points
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331, United States
| | - Christopher M Beaudry
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331, United States
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4
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Wang G, Li JC, Zhou YG, Ye ZS. Enantioselective Synthesis of Indole-Fused Bicyclo[3.2.1]octanes via Palladium(II)-Catalyzed Cascade Reaction. Org Lett 2021; 23:802-807. [PMID: 33464091 DOI: 10.1021/acs.orglett.0c04030] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Indole-fused bicyclo[3.2.1]octanes are highly important structural units in natural products and biologically active compounds. However, there has been limited success in the enantioselective synthesis of these skeletons due to the complexity of the structure and the control of the enantioselectivity. Herein an enantioselective construction of indole-fused bicyclo[3.2.1]octanes bearing an all-carbon quaternary bridgehead stereocenter was developed via an aminopalladition-triggered Heck-type reaction. The protocol features mild conditions and good tolerance for a wide range of functional groups. The transformation can also be scaled up to demonstrate its practicability. The mechanistic studies reveal that the formation of an intermediate indol-3-yl palladium species via C-H activation should be ruled out.
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Affiliation(s)
- Gang Wang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jin-Chen Li
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Yong-Gui Zhou
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Zhi-Shi Ye
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
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5
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Volkova Y, Baranin S, Zavarzin I. A
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Coupling Reaction in the Synthesis of Heterocyclic Compounds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000866] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yulia Volkova
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991
| | - Sergey Baranin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991
| | - Igor Zavarzin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991
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Garkhedkar AM, Gore BS, Hu WP, Wang JJ. Lewis Acid Catalyzed Atom-Economic Synthesis of C2-Substituted Indoles from o-Amido Alkynols. Org Lett 2020; 22:3531-3536. [PMID: 32275448 DOI: 10.1021/acs.orglett.0c00971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein we have disclosed a Zn(OTf)2 catalyzed synthesis of C2-alkyl substituted indole derivatives via unprecedented carbonyl group migration from o-amido alkynols. The key features of this protocol involve N,O-carbonyl group migration, broad substrate scope with varied functionality tolerance, moderate to good yields, and 100% atom economy. The crossover experiments proved that the migration is happening via an intramolecular pathway.
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Affiliation(s)
- Amol Milind Garkhedkar
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Babasaheb Sopan Gore
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Wan-Ping Hu
- Department of Biotechnology, Kaohsiung Medical University, No. 100 Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, No. 100 Tzyou First Road, Sanmin District, Kaohsiung City 807, Taiwan
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7
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Kaur N, Ahlawat N, Verma Y, Grewal P, Bhardwaj P, Jangid NK. Cu-assisted C–N bond formations in six-membered N-heterocycle synthesis. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2019.1695278] [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]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
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8
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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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9
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Dhanasekaran S, Kannaujiya VK, Biswas RG, Singh VK. Enantioselective A3-Coupling Reaction Employing Chiral CuI-iPrpyboxdiPh/N-Boc-(l)-Proline Complex under Cooperative Catalysis: Application in the Synthesis of (Indol-2-yl)methanamines. J Org Chem 2019; 84:3275-3292. [DOI: 10.1021/acs.joc.8b03225] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sivasankaran Dhanasekaran
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Vinod. K. Kannaujiya
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Rayhan G. Biswas
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
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10
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Bugaenko DI, Karchava AV, Yurovskaya MA. Synthesis of indoles: recent advances. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4844] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Tian J, Yuan S, Xiao F, Huang H, Deng GJ. Concise synthesis of N-thiomethyl benzoimidazoles through base-promoted sequential multicomponent assembly. RSC Adv 2019; 9:30570-30574. [PMID: 35530231 PMCID: PMC9072308 DOI: 10.1039/c9ra06144d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 09/21/2019] [Indexed: 01/02/2023] Open
Abstract
An efficient method for the synthesis of N-thiomethyl benzimidazoles from o-phenylenediamines, thiophenols, and aldehydes via C–N/C–S bond formation under metal-free conditions is described. A broad range of functional groups attached to the substrates were well tolerated in this reaction system. Stable and low-toxicity paraformaldehyde was used as the carbon source. An efficient method for the synthesis of N-thiomethyl benzimidazoles from o-phenylenediamines, thiophenols, and aldehydes via C–N/C–S bond formation under metal-free conditions is described.![]()
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Affiliation(s)
- Jingxin Tian
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Shanshan Yuan
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Huawen Huang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
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12
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Hou H, Zhao Y, Pu S, Chen J. Rhodium-catalyzed direct C–H bond alkynylation of aryl sulfonamides with bromoalkynes. Org Biomol Chem 2019; 17:2948-2953. [DOI: 10.1039/c9ob00061e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This protocol selectively provides a straightforward route to prepare ortho-(1-alkynyl) benzenesulfonamides or six-membered benzosultams by using different silyl protected bromoalkynes.
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Affiliation(s)
- Hongcen Hou
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
- China
| | - Yongli Zhao
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
- China
| | - Shouzhi Pu
- Jiangxi Key Laboratory of Organic Chemistry
- Jiangxi Science & Technology Normal University
- Nanchang
- P. R. China
| | - Junmin Chen
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
- China
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13
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Sujeevan Reddy G, Babu Nallapati S, Sri Saranya P, Sridhar B, Bhat Giliyaru V, Chandrashekhar Hariharapura R, Gautham Shenoy G, Pal M. Propargylamine (secondary) as a building block in indole synthesis involving ultrasound assisted Pd/Cu-catalyzed coupling-cyclization method: Unexpected formation of (pyrazole)imine derivatives. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.11.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Liu C, Wang G, Wang Y, Pereshivko OP, Peshkov VA. Copper-Catalyzed Reaction of Secondary Propargylamines with Ethyl Buta-2,3-dienoate for the Synthesis of 1,6-Dihydropyridines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801227] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chao Liu
- College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou P. R. China
| | - Gaigai Wang
- College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou P. R. China
| | - Yuqing Wang
- College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou P. R. China
| | - Olga P. Pereshivko
- College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou P. R. China
| | - Vsevolod A. Peshkov
- College of Chemistry; Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou P. R. China
- Department of Chemistry; School of Science and Technology; Nazarbayev University; 53 Kabanbay Batyr Ave, Block 7 010000 Astana Republic of Kazakhstan
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15
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An efficient synthesis of indoles via a CuMgAl-LDH-catalyzed cyclization of 2-alkynylsulfonanilides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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16
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Alazet S, Preindl J, Simonet-Davin R, Nicolai S, Nanchen A, Meyer T, Waser J. Cyclic Hypervalent Iodine Reagents for Azidation: Safer Reagents and Photoredox-Catalyzed Ring Expansion. J Org Chem 2018; 83:12334-12356. [DOI: 10.1021/acs.joc.8b02068] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sebastien Alazet
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, CH-1015 Lausanne, Switzerland
| | - Johannes Preindl
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, CH-1015 Lausanne, Switzerland
| | - Raphael Simonet-Davin
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, CH-1015 Lausanne, Switzerland
| | - Stefano Nicolai
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, CH-1015 Lausanne, Switzerland
| | - Annik Nanchen
- Process Safety, TÜV SÜD Schweiz AG, CH-4002 Basel, Switzerland
| | - Thierry Meyer
- Group of Chemical and Physical Safety, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, CH-1015 Lausanne, Switzerland
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17
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Saikia P, Gogoi S. Isocoumarins: General Aspects and Recent Advances in their Synthesis. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800019] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Pallabi Saikia
- Department of Chemistry; Assam Kaziranga University; Jorhat - 785006 Assam India
| | - Sanjib Gogoi
- Chemical Sciences & Technology Division, CSIR - North East Institute of Science and Technology; AcSIR; Jorhat - 785006 Assam India
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18
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Intramolecular cyclization of N-propargyl anilines: a new synthetic entry into highly substituted indoles. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1170-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Debnath S, Malakar S, Mondal S. Synthesis of Indole-2-methylsulfonamides by Domino Sonogashira Coupling and Hydroamination Reaction. ChemistrySelect 2017. [DOI: 10.1002/slct.201700544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sudarshan Debnath
- Department of Chemistry; Syamsundar College; Shyamsundar 713424 India
- Department of Chemistry; Visva-Bharati University; Santiniketan 731235 India
| | - Suniti Malakar
- Department of Chemistry; Syamsundar College; Shyamsundar 713424 India
- Department of Chemistry; Visva-Bharati University; Santiniketan 731235 India
| | - Shovan Mondal
- Department of Chemistry; Syamsundar College; Shyamsundar 713424 India
- Department of Chemistry; Visva-Bharati University; Santiniketan 731235 India
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20
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Liao Y, Wei T, Yan T, Cai M. Recyclable [Ru2Cl3(p-cymene)2][PF6]/Cu(OAc)2/PEG-400/H2O system for oxidative annulation of alkynes by aniline derivatives: Green synthesis of indoles. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Yang R, Yu JT, Sun S, Zheng Q, Cheng J. Copper-mediated intramolecular aza-Wacker-type cyclization of 2-alkenylanilines toward 3-aryl indoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Panaka S, Trivedi R, Sony T, Prabhakar S, Raju Chowhan L. Silver(i) catalyzed intramolecular cyclization of N-(2-(alk-1-yn-1-yl))-1H-tetrazoles leading to the formation of N-cyano-2-substituted indoles under ambient conditions. Org Chem Front 2017. [DOI: 10.1039/c7qo00109f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of N-heterocycles from N-(2-(alk-1-yn-1-yl))tetrazoles to obtain N-cyano 2-substituted indoles as selective products.
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Affiliation(s)
- Sangeetha Panaka
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Academy of Scientific and Innovative Research
| | - Rajiv Trivedi
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Academy of Scientific and Innovative Research
| | - T. Sony
- Analytical Chemistry and Mass Spectrometry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - S. Prabhakar
- Analytical Chemistry and Mass Spectrometry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - L. Raju Chowhan
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar
- India
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23
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One-pot synthesis of pyran derivatives using silica-coated magnetic nanoparticles functionalized with piperidinium benzene-1,3-disulfonate as a new efficient reusable catalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2762-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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24
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Thangaraj M, Bhojgude SS, Jain S, Gonnade RG, Biju AT. Selective Synthesis of N-Unsubstituted and N-Arylindoles by the Reaction of Arynes with Azirines. J Org Chem 2016; 81:8604-11. [DOI: 10.1021/acs.joc.6b01472] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | | | | | - Akkattu T. Biju
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
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25
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Efficient Synthesis of Indole Derivatives via Tandem Cyclization Catalyzed by Magnetically Recoverable Palladium/Magnetite (Pd‐Fe
3
O
4
) Nanocrystals. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201500536] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Abstract
Multicomponent reactions are a valuable tool for the synthesis of functional π-electron systems. Two different approaches can be taken into account for accessing the target structures. In the more conventional scaffold approach an already existing chromophore is coupled with other components to give a complex functional π-system. Here, electronically monotonous components can also be introduced, which may exert synergistic electronic effects within the novel compound. The more demanding chromophore concept generates a complete π-electron system and a scaffold concurrently. The latter approach is particularly stimulating for methodologists since π-systems might be accessible from simple starting materials. This review encompasses the advances in the preparation of functional π-electron systems via multicomponent processes during the past few years, based both on the scaffold and chromophore concepts. Besides the synthetic strategies the most important properties, i.e. redox potentials, absorption and emission maxima or fluorescence quantum yields, of the synthesized molecules are highlighted.
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Affiliation(s)
- Lucilla Levi
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany.
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27
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Paioti PHS, Abboud KA, Aponick A. Catalytic Enantioselective Synthesis of Amino Skipped Diynes. J Am Chem Soc 2016; 138:2150-3. [PMID: 26855017 DOI: 10.1021/jacs.5b13387] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The Cu-catalyzed synthesis of nonracemic 3-amino skipped diynes via an enantiodetermining C-C bond formation is described using StackPhos as ligand. Despite challenging issues of reactivity and stereoselectivity inherent to these chiral skipped diynes, the reaction tolerates an extremely broad substrate scope with respect to all components and provides the title compounds in excellent enantiomeric excess. The alkyne moieties are demonstrated here to be useful synthetic handles, and 3-amino skipped diynes are convenient building blocks for enantioselective synthesis.
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Affiliation(s)
- Paulo H S Paioti
- Center for Heterocyclic Compounds, Department of Chemistry and ‡Center for X-ray Crystallography, Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
| | - Khalil A Abboud
- Center for Heterocyclic Compounds, Department of Chemistry and ‡Center for X-ray Crystallography, Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Center for Heterocyclic Compounds, Department of Chemistry and ‡Center for X-ray Crystallography, Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
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28
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Qi Z, Yu S, Li X. Rh(III)-Catalyzed Synthesis of N-Unprotected Indoles from Imidamides and Diazo Ketoesters via C–H Activation and C–C/C–N Bond Cleavage. Org Lett 2016; 18:700-3. [DOI: 10.1021/acs.orglett.5b03669] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zisong Qi
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Songjie Yu
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Xingwei Li
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
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29
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Reddy AVS, Jeong YT. Highly efficient and facile synthesis of densely functionalized thiazolo[3,2- a ]chromeno[4,3- d ]pyrimidin-6(7 H )-ones using [Bmim]BF 4 as a reusable catalyst under solvent-free conditions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.11.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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30
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Zhao Y, Song Q. Copper-catalyzed tandem A3-coupling–isomerization–hydrolysis reactions of aldehydes and terminal alkynes leading to chalcones. Org Chem Front 2016. [DOI: 10.1039/c5qo00282f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A3 coupling is not the end: catalyzed by a simple copper salt, the reaction of aldehyde, alkyne, and amine can afford chalcone.
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Affiliation(s)
- Yingwei Zhao
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
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31
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Lood CS, Laine AE, Högnäsbacka A, Nieger M, Koskinen AMP. Synthesis of Chiral (Indol-2-yl)methanamines and Insight into the Stereochemistry Protecting Effects of the 9-Phenyl-9-fluorenyl Protecting Group. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Synthesis of 2-heterocyclic substituted pyrrolidines by copper-catalyzed domino three-component decarboxylative coupling and cyclization reactions. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Cacchi S, Fabrizi G, Iazzetti A, Molinaro C, Verdiglione R, Goggiamani A. Synthesis of Free NH 2-(Aminomethyl)indoles through Copper-Catalyzed Reaction of 3-(ortho-Trifluoroacetamidophenyl)-1-propargylic Alcohols with Amines and Palladium/Copper- Cocatalyzed Domino Three-Component Sonogashira Cross-Coupling/Cyclization/Substitu. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400881] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Huang L, Arndt M, Gooßen K, Heydt H, Gooßen LJ. Late Transition Metal-Catalyzed Hydroamination and Hydroamidation. Chem Rev 2015; 115:2596-697. [DOI: 10.1021/cr300389u] [Citation(s) in RCA: 739] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Liangbin Huang
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Matthias Arndt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Käthe Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Heinrich Heydt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J. Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
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35
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Atar AB, Kim JS, Lim KT, Jeong YT. Bridging homogeneous and heterogeneous catalysis with CAN·SiO2as a solid catalyst for four-component reactions for the synthesis of tetrasubstituted pyrroles. NEW J CHEM 2015. [DOI: 10.1039/c4nj01234h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The attractive features of this methodology are newer and greener methods, simple procedures, reusability and high efficiency of the catalyst and easy workability.
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Affiliation(s)
- Amol B. Atar
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
| | - Jong Su Kim
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
| | - Kwon Taek Lim
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
| | - Yeon Tae Jeong
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
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36
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Song S, Huang M, Li W, Zhu X, Wan Y. Efficient synthesis of indoles from 2-alkynylaniline derivatives in water using a recyclable copper catalyst system. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Shinde VV, Jeong YT. Molybdate sulfuric acid (MSA): an efficient solid acid catalyst for the synthesis of diversely functionalized fused imidazo[1,2-a]pyrimidines under solvent-free conditions. NEW J CHEM 2015. [DOI: 10.1039/c5nj00516g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Synthesis of imidazo[1,2-a]pyrimidines has been accomplished for the first time under solvent-free conditions using molybdate sulfuric acid (MSA) as a heterogeneous catalyst. The present protocol is operationally simple, green and offers several advantages over the existing methods.
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Affiliation(s)
- Vijay Vilas Shinde
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
| | - Yeon Tae Jeong
- Department of Image Science and Engineering
- Pukyong National University
- Busan 608-737
- Republic of Korea
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38
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Rotta-Loria NL, Borzenko A, Alsabeh PG, Lavery CB, Stradiotto M. Utilizing Mor-DalPhos/Palladium-Catalyzed Monoarylation in the Multicomponent One-Pot Synthesis of Indoles. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400903] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Kaur N. Palladium Catalysts: Synthesis of Five-MemberedN-Heterocycles Fused with Other Heterocycles. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2014. [DOI: 10.1080/01614940.2014.976118] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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40
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Indu S, Subramanian P, Kaliappan KP. Transition-Metal-Catalyzed Selective Cyclization Strategy to 2-Substituted Benzofurans and Indoles en Route to the Oxa Analogues of Isocryptolepine. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402869] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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41
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Dinda BK, Basak S, Mal D. Regiospecific Synthesis of 7-Hydroxyindoles from Pyrroles by Anionic Benzannulation. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402486] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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42
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Synthesis of fused pyrrolo[3,4-d]tetrahydropyrimidine derivatives by proline-catalyzed multicomponent reaction. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.075] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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43
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One-pot synthesis of 1,5-diaza-2,6-cyclooctadiene-3,7-dicarboxylates through a multiple-component reaction. Chem Res Chin Univ 2014. [DOI: 10.1007/s40242-014-3494-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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A novel atom-economic synthesis of functionalized imidazolidines through copper(I)-catalyzed domino three-component coupling and cyclization reactions. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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45
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Hao W, Jiang Y, Cai M. Synthesis of Indolyl Imidazole Derivatives via Base-Promoted Tandem Reaction of N-[2-(1-Alkynyl)phenyl]carbodiimides with Isocyanides. J Org Chem 2014; 79:3634-40. [DOI: 10.1021/jo402552c] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Wenyan Hao
- College of Chemistry and
Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
| | - Yuanyuan Jiang
- College of Chemistry and
Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
| | - Mingzhong Cai
- College of Chemistry and
Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
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46
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Ryan SJ, Francis CL, Savage GP. Benzonitrile Oxide Cycloadditions with Exocyclic Methylene Benzothiazepine Dioxides. Aust J Chem 2014. [DOI: 10.1071/ch13444] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
N-substituted 5-methylene-2,3,4,5-tetrahydrobenzo[f][1,2]thiazepine 1,1-dioxides underwent 1,3-dipolar cycloaddition with benzonitrile oxide, generated in situ, to give isoxazoline spiro adducts. The cycloadditions were completely regioselective to give the hitherto unreported 3,4-dihydro-2H,4′H-spiro[benzo[f][1,2]thiazepine-5,5′-isoxazole] 1,1-dioxide cycloadduct. Where the N-substituent on the sulfonamide cycloaddition precursor was a 2-substituted arene, the resulting atropisomerism along the N-aryl bond led to facial selectivity in the cycloaddition reaction, with greater than 90 % diastereoselectivity.
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47
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Chikkade PK, Shimizu Y, Kanai M. Catalytic enantioselective synthesis of 2-(2-hydroxyethyl)indole scaffolds via consecutive intramolecular amido-cupration of allenes and asymmetric addition of carbonyl compounds. Chem Sci 2014. [DOI: 10.1039/c3sc52803k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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48
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Ca2+-sensing receptor cleavage by calpain partially accounts for altered vascular reactivity in mice fed a high-fat diet. J Cardiovasc Pharmacol 2013; 61:528-35. [PMID: 23429586 DOI: 10.1097/fjc.0b013e31828d0fa3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The Ca-sensing receptor (CaSR) is expressed in endothelial and smooth muscle cells, but its role in regulating vascular reactivity is unclear, as are the effects of disease on CaSR function and expression. We studied vascular reactivity in aortic segments from healthy and diabetic mice, combined with in vitro proteolysis studies and Western blot analyses of CaSR expression in tissue samples. In endothelium-intact aortic rings, extracellular Ca elicited a nitric oxide-dependent relaxation that was attenuated by the CaSR antagonist, NPS2390. The calcimimetic, calindol, induced the endothelium-independent relaxation of aortic segments that was also sensitive to NPS2390. The antagonist failed to affect responses to acetylcholine or U46619 but attenuated contractions to phenylephrine and potassium. In mice fed a Western-type diet, phenylephrine-induced contractions and calindol-induced relaxations were markedly attenuated, and CaSR expression was decreased. The latter phenomenon could be attributed to the activation of the Ca-dependent protease, µ-calpain, and the subsequent proteolytic cleavage of the CaSR. CaSR activation in smooth muscle cells modulates vascular responsiveness to Ca-elevating agonists. These effects are blunted during metabolic stress because of the limited proteolysis of the CaSR by calpain. The loss of the CaSR function may predispose to the macrovascular late complications associated with diabetes.
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49
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Kothandaraman P, Lauw SJL, Chan PWH. Metal-free synthesis of 1H-indole-2-carbaldehydes by N-iodosuccinimide-mediated cyclization of 1-(2′-anilinyl)prop-2-yn-1-ols in water. A formal synthesis of (R)-calindol. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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50
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Zhu C, Ma S. Coupling and Cyclization of o-Iodoanilines and Propargylic Bromides via Allenes: An Efficient Entry to Indomethacin. Org Lett 2013; 15:2782-5. [DOI: 10.1021/ol401115a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Can Zhu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China, and Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry, East China Normal University, 3663 North Zhongshan Lu, Shanghai, 200062, P. R. China
| | - Shengming Ma
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China, and Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry, East China Normal University, 3663 North Zhongshan Lu, Shanghai, 200062, P. R. China
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