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Kushwaha P, Kumar V, Saha B. Current development of β-carboline derived potential antimalarial scaffolds. Eur J Med Chem 2023; 252:115247. [PMID: 36931118 DOI: 10.1016/j.ejmech.2023.115247] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/26/2023] [Accepted: 03/01/2023] [Indexed: 03/12/2023]
Abstract
β-Carboline alkaloids are an eminent class of nitrogen-based natural alkaloids and therapeutic molecules which exert various pharmacological activities through diverse mechanisms. A lot of attention has recently been directed towards this moiety in order to develop effective antimalarial drugs. "Malaria", an acute febrile illness caused by diverse Plasmodium parasites, is a continuing and escalating problem that devastates economically less developed countries by significantly increased morbidity and mortality rates. The mounting parasite resistance towards the antimalarial drugs and augmenting the 'habitat of the insect vector' are creating a catastrophe, indicating an urgent need for new efficacious therapeutics to combat this tropical disease. This article comprehensively encapsulates the clinical and preclinical antimalarial scaffolds comprising β-carboline moiety in their structure. Herein, various classes of natural and semi-synthetic analogues of β-carbolines reported in the last decade (2011-2021) have been extensively studied and illustrated. This review will help the readers to develop an insight into the β-carboline based antimalarials and molecular mechanisms lying behind their mode of action, which is anticipated to be beneficial for the future development of new β-carboline based therapeutics.
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Affiliation(s)
- Preeti Kushwaha
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida, 201303, Uttar Pradesh, India
| | - Vipin Kumar
- Sophisticated Analytical Instrument Facility and Research Division, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida, 201303, Uttar Pradesh, India.
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2
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Li NP, Liu JS, Liu JW, Tian HY, Zhou HL, Zheng YR, Huang XJ, Cao JQ, Ye WC, Wang L. Monoterpenoid indole alkaloids from the fruits of Gelsemium elegans and their anti-inflammatory activities. Bioorg Chem 2021; 107:104624. [PMID: 33465669 DOI: 10.1016/j.bioorg.2020.104624] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/28/2020] [Accepted: 12/30/2020] [Indexed: 10/22/2022]
Abstract
Two novel monoterpenoid indole alkaloids (MIAs), gelsechizines A-B (1-2), along with four known ones (3-6) were isolated from the fruits of Gelsemium elegans. Compound 1 features a new carbon skeleton with two additional carbon atoms forming a 4-methylpyridine unit. Their structures with absolute configurations were elucidated by NMR, MS, X-ray diffraction and electronic circular dichroism (ECD) calculations. Compounds 1-3 showed significant anti-inflammatory effects in vivo and in vitro, which may be related to the inhibition of the trecruitment of neutrophils and macrophages as well as the secretion of TNF-α and IL-6. Preliminary structure-activity relationship analysis revealed that the β-N-acrylate moiety plays an important role in the anti-inflammatory effect.
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Affiliation(s)
- Ni-Ping Li
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China
| | - Jun-Shan Liu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Jiao-Wen Liu
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China
| | - Hai-Yan Tian
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Hong-Ling Zhou
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Yuan-Ru Zheng
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Xiao-Jun Huang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Jia-Qing Cao
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China.
| | - Lei Wang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China.
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Pan Z, Liu Y, Hu F, Liu Q, Shang W, Ji X, Xia C. Enantioselective Synthesis of Spiroindolines via Cascade Isomerization/Spirocyclization/Dearomatization Reaction. Org Lett 2020; 22:1589-1593. [PMID: 31990194 DOI: 10.1021/acs.orglett.0c00181] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The spiroindoline skeleton featured with 2,7-diazaspiro[4.4]nonane exists in various structurally intricate and biologically active monoterpene indole alkaloids. A catalytic asymmetric cascade enamine isomerization/spirocyclization/dearomatization succession to construct the spiroindoline was developed, which employed the indolyl dihydropyridine as a substrate under catalysis of the chiral phosphoric acid. This cascade reaction provided various spiroindolines in both diastereoselective and enantionselective fashions.
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Affiliation(s)
- Zhiqiang Pan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province), School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Yuchang Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province), School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Fengchi Hu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province), School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Qinglong Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province), School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Wenbin Shang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province), School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Xu Ji
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province), School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province), School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
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Calcaterra A, Mangiardi L, Delle Monache G, Quaglio D, Balducci S, Berardozzi S, Iazzetti A, Franzini R, Botta B, Ghirga F. The Pictet-Spengler Reaction Updates Its Habits. Molecules 2020; 25:E414. [PMID: 31963860 PMCID: PMC7024544 DOI: 10.3390/molecules25020414] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/05/2020] [Accepted: 01/09/2020] [Indexed: 12/31/2022] Open
Abstract
The Pictet-Spengler reaction (P-S) is one of the most direct, efficient, and variable synthetic method for the construction of privileged pharmacophores such as tetrahydro-isoquinolines (THIQs), tetrahydro-β-carbolines (THBCs), and polyheterocyclic frameworks. In the lustro (five-year period) following its centenary birthday, the P-S reaction did not exit the stage but it came up again on limelight with new features. This review focuses on the interesting results achieved in this period (2011-2015), analyzing the versatility of this reaction. Classic P-S was reported in the total synthesis of complex alkaloids, in combination with chiral catalysts as well as for the generation of libraries of compounds in medicinal chemistry. The P-S has been used also in tandem reactions, with the sequences including ring closing metathesis, isomerization, Michael addition, and Gold- or Brønsted acid-catalyzed N-acyliminium cyclization. Moreover, the combination of P-S reaction with Ugi multicomponent reaction has been exploited for the construction of highly complex polycyclic architectures in few steps and high yields. The P-S reaction has also been successfully employed in solid-phase synthesis, affording products with different structures, including peptidomimetics, synthetic heterocycles, and natural compounds. Finally, the enzymatic version of P-S has been reported for biosynthesis, biotransformations, and bioconjugations.
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Affiliation(s)
- Andrea Calcaterra
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Laura Mangiardi
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy;
| | - Giuliano Delle Monache
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Deborah Quaglio
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Silvia Balducci
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Simone Berardozzi
- Department of Chemistry and Applied Biosciences, ETH-Zürich, Vladimir-Prelog Weg 4, 8093 Zürich, Switzerland
| | - Antonia Iazzetti
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Roberta Franzini
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Bruno Botta
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Francesca Ghirga
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy;
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Vchislo NV. α,β‐Unsaturated Aldehydes as C‐Building Blocks in the Synthesis of Pyridines, 1,4‐Dihydropyridines and 1,2‐Dihydropyridines. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900275] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- N. V. Vchislo
- A. E. Favorsky Irkutsk Institute of ChemistrySiberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
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He WX, Xing X, Yang ZJ, Yu Y, Wang N, Yu XQ. Biocatalytic One-Pot Three-Component Synthesis of Indoloquinolizines with High Diastereoselectivity. Catal Letters 2019. [DOI: 10.1007/s10562-019-02660-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Sun J, Jiang W, Yan CG. Convenient construction of tetrahydrochromeno[4',3':2,3]indolizino[8,7- b]indoles and tetrahydroindolizino[8,7- b]indoles via one-pot domino reaction. RSC Adv 2018; 8:28736-28744. [PMID: 35542494 PMCID: PMC9084333 DOI: 10.1039/c8ra05138k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 08/06/2018] [Indexed: 12/22/2022] Open
Abstract
The functionalized tetrahydrochromeno[4',3':2,3]indolizino[8,7-b]indoles were conveniently synthesized in high yields by one-pot domino reaction of tryptamines, alkyl propiolates and 2-aryl-3-nitro-2H-chromenes. Under similar conditions, the one-pot reaction of tryptamines, alkyl propiolates and β-nitroalkenes resulted in functionalized tetrahydroindolizino[8,7-b]indoles. The reaction mechanism involved sequential generation of β-enamino ester, Michael addition, Pictet-Spengler reaction and annulation process. The reaction showed high atomic economy and met the goals of sustainable chemistry.
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Affiliation(s)
- Jing Sun
- College of Chemistry & Chemical Engineering, Yangzhou University Yangzhou 225002 China +86-514-87975244 +86-514-87975531
| | - Wang Jiang
- College of Chemistry & Chemical Engineering, Yangzhou University Yangzhou 225002 China +86-514-87975244 +86-514-87975531
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering, Yangzhou University Yangzhou 225002 China +86-514-87975244 +86-514-87975531
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Gobé V, Dousset M, Retailleau P, Gandon V, Guinchard X. Dissecting the Gold(I)-Catalyzed Carboaminations of N-Allyl Tetrahydro-β-carbolines to Allenes. J Org Chem 2018; 83:898-912. [PMID: 29250949 DOI: 10.1021/acs.joc.7b02900] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
N-Allyl tetrahydro-β-carbolines undergo gold-catalyzed cyclizations that lead to tetracyclic compounds, resulting from both ring closure and the transfer of the allylic group from the nitrogen to the carbon backbone. The final skeleton obtained depends on the nature of both the R2 group of the allene and the R3 group of the allylic residue. Mechanistic studies and DFT calculations allowed the determination of all the mechanistic pathways involved in these processes, stemming from a common intermediate that evolves differently according to the substituents nature.
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Affiliation(s)
- Valérian Gobé
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay , 1 av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Maxime Dousset
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay , 1 av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay , 1 av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Vincent Gandon
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay , 1 av. de la Terrasse, 91198 Gif-sur-Yvette, France.,Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay , Bâtiment 420, 91405 Orsay cedex, France
| | - Xavier Guinchard
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay , 1 av. de la Terrasse, 91198 Gif-sur-Yvette, France
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10
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Rao RN, Maiti B, Chanda K. Application of Pictet-Spengler Reaction to Indole-Based Alkaloids Containing Tetrahydro-β-carboline Scaffold in Combinatorial Chemistry. ACS COMBINATORIAL SCIENCE 2017; 19:199-228. [PMID: 28276678 DOI: 10.1021/acscombsci.6b00184] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Indole-based alkaloids are well-known in the literature for their diverse biological properties. Polysubstituted optically active tetrahydro-β-carboline derivatives functionalized on C-1 position are the common structural motif in most of the indole-based alkaloids, as well as highly marketed drugs. The stereoselective Pictet-Spengler reaction is one of the currently most important synthetic techniques used for the preparation of these privileged tetrahydro-β-carboline scaffolds. To date, there are numerous research reports that have been published on the synthesis of the tetrahydro-β-carboline scaffold both on solid phase, as well as in solution phase. Moreover rapid growth has been observed for the enantioselective synthesis of tetrahydro-β-carboline scaffold using chiral organocatalysts. In this Review, efforts have been taken to shed light on the latest information available on different strategies to synthesize tetrahydro-β-carboline both on solid phase and in solution phase during the last 20 years. Furthermore, we believe that the present synthetic methodologies covered in this Review will help to improve the status of this privileged tetrahydro-β-carboline scaffold in its use for drug discovery.
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Affiliation(s)
- R. Nishanth Rao
- Department of Chemistry,
School of Advanced Sciences, VIT University, Vellore-632014, India
| | - Barnali Maiti
- Department of Chemistry,
School of Advanced Sciences, VIT University, Vellore-632014, India
| | - Kaushik Chanda
- Department of Chemistry,
School of Advanced Sciences, VIT University, Vellore-632014, India
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Gobé V, Dousset M, Retailleau P, Gandon V, Guinchard X. Gold(I)-Catalyzed Carboaminations of Allenes by N
-Allyltetrahydro-β-carbolines: An Experimental and Theoretical Study. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201601075] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Valérian Gobé
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Maxime Dousset
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Vincent Gandon
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
- Institut de Chimie Moléculaire et des Matériaux O'Orsay, CNRS UMR 8182, Univ. Paris-Sud; Université Paris-Saclay; bâtiment 420 91405 Orsay cedex France
| | - Xavier Guinchard
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
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Jiang YH, Yan CG. Indium chloride catalyzed three-component reaction for the synthesis of 2-((oxoindolin-3-yl)-4,5,6,7-tetrahydro-1H-indol-1-yl)benzamides. RSC Adv 2016. [DOI: 10.1039/c6ra08811b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In the presence of indium chloride as a Lewis acid catalyst, the three-component reaction afforded functionalized 2-((oxoindolin-3-yl)-4,5,6,7-tetrahydro-1H-indol-1-yl)benzamides in satisfactory yields.
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Affiliation(s)
- Yan-Hong Jiang
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
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Gobé V, Retailleau P, Guinchard X. Self-Relay Gold(I)-Catalyzed Pictet-Spengler/Cyclization Cascade Reaction for the Rapid Elaboration of Pentacyclic Indole Derivatives. Chemistry 2015; 21:17587-90. [DOI: 10.1002/chem.201503941] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Indexed: 11/08/2022]
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14
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Gobé V, Guinchard X. Stereoselective Synthesis of Chiral Polycyclic Indolic Architectures through Pd(0) -Catalyzed Tandem Deprotection/Cyclization of Tetrahydro-β-carbolines on Allenes. Chemistry 2015; 21:8511-20. [PMID: 25900665 DOI: 10.1002/chem.201500273] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Indexed: 01/14/2023]
Abstract
Enantioenriched N-allyl tetrahydro-β-carbolines were prepared by chiral phosphoric acid-catalyzed Pictet-Spengler reactions. The compounds undergo Pd(0) -catalyzed cyclizations through a tandem deprotection/cyclization process. The regioselectivity of the attack is controlled by the chain length and by the substitution pattern of the allene function. Products resulting from 5-exo- or 6-exo-attack were obtained with diastereoisomeric ratio up to 95:5. Azepinopyrrido[3,4-b]indoles were obtained by 7-endo-cyclizations.
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Affiliation(s)
- Valérian Gobé
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette (France)
| | - Xavier Guinchard
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette (France).
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Gobé V, Guinchard X. Pd(0)-Catalyzed Tandem Deprotection/Cyclization of Tetrahydro-β-carbolines on Allenes: Application to the Synthesis of Indolo[2,3-a]quinolizidines. Org Lett 2014; 16:1924-7. [DOI: 10.1021/ol500448j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Valerian Gobé
- Centre de Recherche de Gif, Institut de
Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Xavier Guinchard
- Centre de Recherche de Gif, Institut de
Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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16
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Zhu D, Sun J, Yan CG. One-pot synthesis of 6,11-dihydro-5H-indolizino[8,7-b]indoles via sequential formation of β-enamino ester, Michael addition and Pictet–Spengler reactions. RSC Adv 2014. [DOI: 10.1039/c4ra10355f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
One pot sequential reaction of generation of β-enamino ester, Michael addition and Pictet–Spengler reaction.
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Affiliation(s)
- Dan Zhu
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002, China
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18
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One-pot Sequential Reaction for the Synthesis of Polysubstituted 3-(3-Nitro-2-phenylchroman-4-yl)-3-arylaminoacrylates. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300547] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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