1
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Goel KK, Rajput SK, Kumar A, Nandi NK, Joshi G, Kharb R. Imidazoquinoxaline as a Privileged Fused Pharmacophore in Anticancer Drug Development: A Review of Synthetic Strategies and Medicinal Aspects. ChemistrySelect 2022. [DOI: 10.1002/slct.202200834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kapil Kumar Goel
- Deparment of Pharmaceutical Sciences Gurukul Kangri (Deemed to be University) Haridwar 249404 India
- Amity Institute of Pharmacy Amity University Noida Uttar Pradesh 201301 India
| | - Satyendra Kumar Rajput
- Deparment of Pharmaceutical Sciences Gurukul Kangri (Deemed to be University) Haridwar 249404 India
| | - Ashwani Kumar
- Deparment of Pharmaceutical Sciences Gurukul Kangri (Deemed to be University) Haridwar 249404 India
| | - Nilay Kumar Nandi
- Department of Pharmaceutical Chemistry ISF College of Pharmacy, Ghal Kalan G.T Road, Moga Punjab India- 142001
| | - Gaurav Joshi
- School of Pharmacy Graphic Era Hill University Dehradun 248002 India
| | - Rajeev Kharb
- Amity Institute of Pharmacy Amity University Noida Uttar Pradesh 201301 India
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2
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Kalra S, Joshi G, Kumar M, Arora S, Kaur H, Singh S, Munshi A, Kumar R. Anticancer potential of some imidazole and fused imidazole derivatives: exploring the mechanism via epidermal growth factor receptor (EGFR) inhibition. RSC Med Chem 2020; 11:923-939. [PMID: 33479688 DOI: 10.1039/d0md00146e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 06/13/2020] [Indexed: 12/12/2022] Open
Abstract
Imidazole-based epidermal growth factor receptor (EGFR) inhibitors were computationally designed and synthesized. All the compounds were assessed for their anti-proliferative activity against five cancer cell lines, viz., MDA-MB-231 (breast), T47D (breast) and MCF-7 (breast), A549 (lung) and HT-29 (colorectal). Compounds 2c and 2d emerged as better anticancer molecules with no toxicity towards normal cells. 2c and 2d inhibited EGFR enzymatic activity in vitro with IC50 values of 617.33 ± 0.04 nM and 710 ± 0.05 nM, respectively. In order to further improve the potency, we explored an unoccupied area of the ATP binding domain of EGFR and analysed an in silico interaction model of 2c and 2d-EGFR complexes that guided and allowed substitution of the 4-fluorophenyl ring (2c and 2d) with 4-(4-methylpiperazinyl)-3-nitrophenyl at the N-9 position, resulting in compound 3c with a better binding score and potent EGFR inhibitory activity (IC50: 236.38 ± 0.04 nM), which was comparable to the positive control erlotinib (239.91 ± 0.05 nM). 3c exhibited a great improvement in anticancer potency with inhibition of cell growth of all cancer cell lines at very low micromolar concentrations (IC50 = 1.98 to 4.07 μM). Further investigation revealed that 3c also induced an increase in ROS levels in cancer cells in a mitochondrial-independent manner and halted the cell cycle at the sub-G1 phase.
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Affiliation(s)
- Sourav Kalra
- Department of Human Genetics and Molecular Medicine , School of Health Sciences , Central University of Punjab , Bathinda , 151001 , India . ;
| | - Gaurav Joshi
- Department of Pharmaceutical Sciences and Natural Products , School of Basic and Applied Sciences , Central University of Punjab , Bathinda , 151001 , India . ,
| | - Manvendra Kumar
- Department of Pharmaceutical Sciences and Natural Products , School of Basic and Applied Sciences , Central University of Punjab , Bathinda , 151001 , India . ,
| | - Sahil Arora
- Department of Pharmaceutical Sciences and Natural Products , School of Basic and Applied Sciences , Central University of Punjab , Bathinda , 151001 , India . ,
| | - Harsimrat Kaur
- Desh Bhagat Dental College and Hospital , Mandi Gobindgarh , India
| | - Sandeep Singh
- Department of Human Genetics and Molecular Medicine , School of Health Sciences , Central University of Punjab , Bathinda , 151001 , India . ;
| | - Anjana Munshi
- Department of Human Genetics and Molecular Medicine , School of Health Sciences , Central University of Punjab , Bathinda , 151001 , India . ;
| | - Raj Kumar
- Department of Pharmaceutical Sciences and Natural Products , School of Basic and Applied Sciences , Central University of Punjab , Bathinda , 151001 , India . ,
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3
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Thobokholt EN, Larghi EL, Bracca ABJ, Kaufman TS. Isolation and synthesis of cryptosanguinolentine (isocryptolepine), a naturally-occurring bioactive indoloquinoline alkaloid. RSC Adv 2020; 10:18978-19002. [PMID: 35518305 PMCID: PMC9054090 DOI: 10.1039/d0ra03096a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/04/2020] [Indexed: 11/28/2022] Open
Abstract
Cryptosanguinolentine (isocryptolepine) is one of the minor naturally-occurring monomeric indoloquinoline alkaloids, isolated from the West African climbing shrub Cryptolepis sanguinolenta. The natural product displays such a simple and unique skeleton, which chemists became interested in well before it was found in Nature. Because of its structure and biological activity, the natural product has been targeted for synthesis on numerous occasions, employing a wide range of different strategies. Hence, discussed here are aspects related to the isolation of isocryptolepine, as well as the various approaches toward its total synthesis.
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Affiliation(s)
- Elida N Thobokholt
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
| | - Enrique L Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
| | - Andrea B J Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
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4
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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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5
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Liu X, Liu T, Meng W, Du H. Highly Stereoselective Metal-Free Hydrogenations of Pyrrolo[1,2-a]quinoxalines. Org Lett 2018; 20:5653-5656. [DOI: 10.1021/acs.orglett.8b02364] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Xiaoqin Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ting Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
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6
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Joshi G, Chauhan M, Kumar R, Thakur A, Sharma S, Singh R, Wani AA, Sharon A, Bharatam PV, Kumar R. Cyclocondensation reactions of an electron deactivated 2-aminophenyl tethered imidazole with mono/1,2-biselectrophiles: synthesis and DFT studies on the rationalisation of imidazo[1,2-a]quinoxaline versus benzo[f]imidazo[1,5-a][1,3,5]triazepine selectivity switches. Org Chem Front 2018. [DOI: 10.1039/c8qo00706c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microwave-assisted cyclocondensation of title compounds afforded unreported imidazo[1,2-a] quinoxaline and benzo[f]imidazo[1,5-a][1,3,5]triazepines in high yields.
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Affiliation(s)
- Gaurav Joshi
- Department of Pharmaceutical Sciences and Natural Products
- Central University of Punjab
- Bathinda-151001
- India
| | - Monika Chauhan
- Department of Pharmaceutical Sciences and Natural Products
- Central University of Punjab
- Bathinda-151001
- India
| | - Rakesh Kumar
- Department of Pharmaceutical Sciences and Natural Products
- Central University of Punjab
- Bathinda-151001
- India
| | - Ankush Thakur
- Department of Pharmaceutical Sciences and Natural Products
- Central University of Punjab
- Bathinda-151001
- India
| | - Sachin Sharma
- Department of Pharmaceutical Sciences and Natural Products
- Central University of Punjab
- Bathinda-151001
- India
| | - Rajveer Singh
- Department of Pharmaceutical Chemistry
- I.S.F. College of Pharmacy
- Moga
- India
| | - Aabid Abdullah Wani
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- S.A.S. Nagar
- India
| | - Ashoke Sharon
- Department of Chemistry
- Birla Institute of Technology
- Ranchi
- India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- S.A.S. Nagar
- India
| | - Raj Kumar
- Department of Pharmaceutical Sciences and Natural Products
- Central University of Punjab
- Bathinda-151001
- India
- Department of Pharmaceutical Chemistry
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7
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Chen LH, Kao CH, Dhole S, Barve IJ, Shen LC, Chung WS, Sun CM. Regioselective synthesis of imidazo[1,5-a]quinoxalines and methyl N-phenylbenzimidats on an ionic liquid support. RSC Adv 2016. [DOI: 10.1039/c6ra11861e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An ionic liquid supported synthesis of imidazo[1,5-a]quinoxalines and methyl N-phenylbenzimidats was explored to generate polycyclic imidazo[1,5-a]quinoxalines and methyl N-phenylbenzimidats during the cleavage of the support.
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Affiliation(s)
- Li-Hsun Chen
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Chih-Hsien Kao
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Sandip Dhole
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Indrajeet J. Barve
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Li-Ching Shen
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Wen-Sheng Chung
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Chung-Ming Sun
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
- Department of Medicinal and Applied Chemistry
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8
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Park S, Kwon DI, Lee J, Kim I. When Indolizine Meets Quinoline: Diversity-Oriented Synthesis of New Polyheterocycles and Their Optical Properties. ACS COMBINATORIAL SCIENCE 2015. [PMID: 26203781 DOI: 10.1021/acscombsci.5b00031] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Fluorescence-based technologies play a pivotal role in various biomedical applications. Here we report an efficient route to a new class of fluorophores, indolizino[3,2-c]quinolines, via the oxidative Pictet-Spengler cyclization strategy. The condensation of several 2-methylpyridines with 2-bromo-2'-nitroacetophenone allowed for the rapid assembly of indolizines with a 2-nitrophenyl group at the C2 position. The subsequent reduction of the nitro group under mild conditions followed by oxidative Pictet-Spengler cyclization with various aryl aldehydes in the presence of a catalytic amount of FeCl3 furnished the indolizino[3,2-c]quinolines in good overall yields. We also examined the photophysical properties of this new series of polyheterocyclic compounds. Several indolizino[3,2-c]quinolines were found to have unique and desirable optical properties, suggesting that these compounds may be suitable for use as prospective fluorescent probes in aqueous systems.
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Affiliation(s)
- Sujin Park
- College
of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University 85 Songdogwahak-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - Dah In Kwon
- College
of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea
| | - Jeeyeon Lee
- College
of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea
| | - Ikyon Kim
- College
of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University 85 Songdogwahak-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
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9
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Srihari P, Padmabhavani B, Ramesh S, Bharath Kumar Y, Singh A, Ummanni R. PMA-SiO2 catalyzed synthesis of indolo[2,3-c]quinolines as potent anti cancer agents. Bioorg Med Chem Lett 2015; 25:2360-5. [DOI: 10.1016/j.bmcl.2015.04.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 03/30/2015] [Accepted: 04/06/2015] [Indexed: 11/27/2022]
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10
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Mamedov VA, Kalinin AA. Advances in the synthesis of imidazo[1,5-a]- and imidazo[1,2-a]quinoxalines. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n09abeh004424] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Medda F, Hulme C. Exploiting the Divalent Nature of Isonitriles: a novel Pictet-Spengler Amidination process. Tetrahedron Lett 2014; 55:3328-3331. [PMID: 24954960 PMCID: PMC4062309 DOI: 10.1016/j.tetlet.2014.04.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An isocyanide-based multicomponent reaction (IMCR) utilized for the rapid assembly of novel, biologically relevant dihydropyrrolo[1,2-a]quinoxalines-amidines is herein presented. Starting from 1-(2-aminophenyl)pyrroles, aldehydes, and isonitriles, the target heterocyclic scaffold is assembled in a one-pot, operationally friendly process. With three points of diversity and formation of three chemical bonds in one step, this strategy proves to be very general. Novel, mild methodology for the generation of amidines from secondary amine anilines and isonitriles is also introduced.
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Affiliation(s)
- Federico Medda
- University of Arizona, College of Pharmacy, 1703 E. Mabel St., Tucson, AZ 85721, USA
- BIO5 Oro Valley, 1580 E. Hanley Blvd., Oro Valley, AZ 85737, USA
| | - Christopher Hulme
- University of Arizona, College of Pharmacy, 1703 E. Mabel St., Tucson, AZ 85721, USA
- BIO5 Oro Valley, 1580 E. Hanley Blvd., Oro Valley, AZ 85737, USA
- University of Arizona, Department of Chemistry and Biochemistry, Tucson, AZ 85721, USA
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12
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Verma AK, Jha RR, Kasi Sankar V, Singh RP. Selective synthesis of 4,5-dihydroimidazo- and imidazo[1,5-a]quinoxalines via modified Pictet–Spengler reaction. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Samala S, Saifuddin M, Mandadapu AK, Kundu B. Three-Component Tandem-Intramolecular Hydroamination Reactions in One Pot Involving Indoles, 2-Aminobenzyl Alcohols, and 2-Alkynylbenzaldehydes: Consecutive 7-endo-trigand Electrophilic 6-endo-digCyclizations. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300100] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Zheng YH, Lu HY, Li M, Chen CF. Synthesis, Structures, and Optical Properties of Aza[4]helicenes. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Agarwal PK, Dathi MD, Saifuddin M, Kundu B. Engineering of indole-based tethered biheterocyclic alkaloid meridianin into β-carboline-derived tetracyclic polyheterocycles via amino functionalization/6-endo cationic π-cyclization. Beilstein J Org Chem 2012; 8:1901-8. [PMID: 23209529 PMCID: PMC3511029 DOI: 10.3762/bjoc.8.220] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 10/19/2012] [Indexed: 01/14/2023] Open
Abstract
A mild, efficient and versatile method has been developed for the construction of a functionalized natural product, meridianin, and its post conversion to pyrimido-β-carboline by cationic π- cyclization. The strategy involves the introduction of an amino group at the C-5 of the pyrimidine ring and utilizing the nucleophilictiy of the C-2 in the indole ring to facilitate cationic π-cyclization.
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Affiliation(s)
- Piyush Kumar Agarwal
- Division of Medicinal and Process Chemistry, Central Drug Research Institute, CSIR, Lucknow, 226001, India,
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16
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Divergent total synthesis of the natural antimalarial marinoquinolines A, B, C, E and unnatural analogues. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.115] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Uchuskin MG, Molodtsova NV, Abaev VT, Trushkov IV, Butin AV. Furan ring opening–indole ring closure: SnCl2-induced reductive transformation of difuryl(2-nitroaryl)methanes into 2-(2-acylvinyl)indoles. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Lewis Acid-Catalyzed Selective Synthesis of Diversely Substituted Indolo- and Pyrrolo[1,2-a]quinoxalines and Quinoxalinones by Modified Pictet-Spengler Reaction. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101013] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Maiti B, Sun CM. Novel approach towards the synthesis of skeletally diverse benzimidazole-pyrrolo[1,2-a]quinoxaline by SNAr/Pictet–Spengler reaction under focused microwave irradiation. NEW J CHEM 2011. [DOI: 10.1039/c1nj20153k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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21
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Butin AV, Uchuskin MG, Pilipenko AS, Tsiunchik FA, Cheshkov DA, Trushkov IV. Furan Ring-Opening/Indole Ring-Closure: Pictet-Spengler-Like Reaction of 2-(o-Aminophenyl)furans with Aldehydes. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901241] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Sharma S, Kundu B. Application of the Modified Pictet−Spengler Cyclization Reaction for the Preparation of an Imidazopyrazine Ring: Synthesis of new Pyrido- and Pyrimido-imidazopyrazines. ACTA ACUST UNITED AC 2009; 11:720-31. [PMID: 19435370 DOI: 10.1021/cc9000345] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Sunil Sharma
- Medicinal and Process Chemistry Division, Central Drug Research Institute, Lucknow 226001, India
| | - Bijoy Kundu
- Medicinal and Process Chemistry Division, Central Drug Research Institute, Lucknow 226001, India
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23
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Sharma SK, Sharma S, Agarwal PK, Kundu B. Application of 7-endo-trigPictet-Spengler Cyclization to the Formation of the Benzazepine Ring: Synthesis of Benzazepinoindoles. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801201] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Agarwal PK, Sharma SK, Sawant D, Kundu B. Application of the Pictet–Spengler reaction to aryl amine-based substrates having pyrimidine as a π-nucleophile: synthesis of pyrimidoquinolines with structural analogy to benzonaphthyridines present in alkaloids. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.11.067] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Mandadapu AK, Saifuddin M, Agarwal PK, Kundu B. A new entry to phenanthridine ring systems via sequential application of Suzuki and the modified Pictet–Spengler reactions. Org Biomol Chem 2009; 7:2796-803. [DOI: 10.1039/b905696c] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Agarwal PK, Sawant D, Sharma S, Kundu B. New Route to the Synthesis of the Isocryptolepine Alkaloid and Its Related Skeletons Using a Modified Pictet-Spengler Reaction. European J Org Chem 2009. [DOI: 10.1002/ejoc.200800929] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Sharma S, Kundu B. Unprecedented SnCl2·2H2O-mediated intramolecular cyclization of nitroarenes via C–N bond formation: a new entry to the synthesis of cryptotackieine and related skeletons. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.154] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Application of the Pictet–Spengler reaction to aryl amine substrates linked to deactivated aromatic heterosystems. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Xiang J, Zheng L, Chen F, Dang Q, Bai X. A Cascade Reaction Consisting of Pictet−Spengler-Type Cyclization and Smiles Rearrangement: Application to the Synthesis of Novel Pyrrole-Fused Dihydropteridines. Org Lett 2007; 9:765-7. [PMID: 17279761 DOI: 10.1021/ol0629364] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Tandem Pictet-Spengler-type cyclization and Smiles rearrangement have been discovered in the synthesis of pyrimidine-fused heterocycles. The reaction of 4-chloro-5-pyrrol-1-ylpyrimidine amino aldehyde with an amine under an acidic condition yielded the Pictet-Spengler-type cyclization product diazepine, which readily underwent Smiles rearrangement to give a novel pyrrolo[1,2-f]pteridine derivative.
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Affiliation(s)
- Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery, Jilin University, 75 Haiwai Street, Changchun, Jilin 130012, P. R. China
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Saha B, Sharma S, Sawant D, Kundu B. Water as an efficient medium for the synthesis of tetrahydro-β-carbolines via Pictet–Spengler reactions. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.12.112] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Duggineni S, Sawant D, Saha B, Kundu B. Application of modified Pictet–Spengler reaction for the synthesis of thiazolo- and pyrazolo-quinolines. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.01.063] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Zheng L, Xiang J, Dang Q, Guo S, Bai X. Novel heterocyclic scaffold consisting of indole-fused pteridines. ACTA ACUST UNITED AC 2006; 7:813-5. [PMID: 16283789 DOI: 10.1021/cc0500809] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lianyou Zheng
- The Center for Combinatorial Chemistry and Drug Discovery, Jilin University, 75 Jinlai Street, Changchun, Jilin 130012, P.R. China
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Lee SC, Park SB. Solid-Phase Parallel Synthesis of Natural Product-Like Diaza-Bridged Heterocycles through Pictet−Spengler Intramolecular Cyclization. ACTA ACUST UNITED AC 2005; 8:50-7. [PMID: 16398553 DOI: 10.1021/cc0501054] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A multistep, practical solid-phase strategy for the synthesis of natural product-like diaza-bridged heterocycles was developed. A key step in the library synthesis is tandem acidolytic cleavage with subsequent in situ iminium formation followed by the Pictet-Spengler intramolecular cyclization. The Pictet-Spengler-type intramolecular cyclization step was regioselective and diastereoselective to give final products as single diastereomers in exceptional yields and purities, which was confirmed by NMR structural study and LC/MS analysis. This approach is exemplified by the preparation of a 384-member library of 3,9-diazabicyclo[3.3.1]non-6-en-2-one skeletons, fused with indole and dihydroxybenzene and diversified at two bridging nitrogen atoms, using the solid-phase parallel synthetic methodology without further purification. In this pilot library, two diastereomerically enriched diaza-bridged core skeletons were modified by amide and urea bond formation on bridging nitrogen atoms, and this scheme exhibits the potential for expansion to obtain further diversification.
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Affiliation(s)
- Sung-Chan Lee
- School of Chemistry, Seoul National University, Seoul 151-742, Korea
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