1
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Kumar V, Sachdeva C, Waidha K, Sharma S, Ray D, Kumar Kaushik N, Saha B. In Vitro and In Silico Anti‐plasmodial Evaluation of Newly Synthesized β‐Carboline Derivatives. ChemistrySelect 2021. [DOI: 10.1002/slct.202101355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vipin Kumar
- Amity Institute of Click Chemistry Research and Studies Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Cheryl Sachdeva
- Amity Institute of Virology and Immunology Institution Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Kamran Waidha
- Amity Institute of Biotechnology Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Sunil Sharma
- Chemical Engineering Department National Tsing Hua University Hsinchu Taiwan 30013
| | - Devalina Ray
- Amity Institute of Biotechnology Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Naveen Kumar Kaushik
- Amity Institute of Virology and Immunology Institution Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Biswajit Saha
- Amity Institute of Biotechnology Amity University Sector 125 Noida 201313, Uttar Pradesh India
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2
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Marsicano V, Arcadi A, Chiarini M, Fabrizi G, Goggiamani A, Iazzetti A. Sequential condensation/biannulation reactions of β-(2-aminophenyl)-α,β-ynones with 1,3-dicarbonyls. Org Biomol Chem 2021; 19:5177-5190. [PMID: 34042150 DOI: 10.1039/d1ob00795e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A divergent domino condensation/biannulation reaction of β-(2-aminophenyl) α,β-ynones with 1,3-dicarbonyls to construct a polycyclic 4H-pyrano[3,4-c]quinoline core has been developed. The p-TsOH·H2O catalyzed reaction of β-(2-aminophenyl) α,β-ynones with β-ketoesters in ethanol proceeds with good to excellent yields to provide a simple and effective method for the synthesis of functionalized 4H-pyrano[3,4-c]quinolinones. Further elaboration of these latter derivatives with an excess of 20% NH4OH in EtOH at 50 °C helps achieve the synthesis of the perlodinine analogues benzo[c][2,7]naphthyridin-4(3H)-one derivatives in high yields. Moreover, the p-TsOH·H2O mediated reaction of β-(2-aminophenyl) α,β-ynones with β-di-ketones leads to the formation of a variety of structurally diverse 4H-pyrano[3,4-c]quinoline polycyclic ketals by the incorporation of an alcohol solvent molecule in a cascade fashion.
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Affiliation(s)
- Vincenzo Marsicano
- Dipartimento di Scienze Fisiche e Chimiche, Università di L'Aquila, Via Vetoio- 67010 Coppito (AQ), Italy.
| | - Antonio Arcadi
- Dipartimento di Scienze Fisiche e Chimiche, Università di L'Aquila, Via Vetoio- 67010 Coppito (AQ), Italy.
| | - Marco Chiarini
- Facoltà di Bioscienze e Tecnologie Agro-alimentari e Ambientali, Università di Teramo, Via R. Balzarini 1, 64100 - Teramo (Te), Italy
| | - Giancarlo Fabrizi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza, Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Antonella Goggiamani
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza, Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Antonia Iazzetti
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza, Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
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3
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Kumar V, Tiwari SK, Singh V. Silver(I)‐Catalyzed Regioselective Synthesis of Dihydrofuro[3,4‐
b
]quinolines from
o
‐Alkynylquinoline‐MBH Adducts and Evaluation of their Photophysical Properties. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vipin Kumar
- Department of ChemistryDr B R Ambedkar National Institute of Technology (NIT) Jalandhar 144011, Punjab India
| | - Sandip Kumar Tiwari
- Department of Chemistry Institute of ScienceBanaras Hindu University Varanasi 221005 Uttar Pradesh India
| | - Virender Singh
- Department of ChemistryDr B R Ambedkar National Institute of Technology (NIT) Jalandhar 144011, Punjab India
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4
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Mayooufi A, Romdhani-Younes M, Jacquemin J, Thibonnet J. One-pot approach to access 2H-pyran-2-ones bearing an amino group via the Pd-catalyzed Sonogashira coupling of (Z)-3-iodovinylic esters followed by intramolecular iodocyclization. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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TBHP-promoted oxidative cyclization of o-alkynylquinoline aldehydes: Metal/additive-free domino synthesis of pyrano[4,3-b]quinolin-1-ones. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.083] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Devi N, Shankar R, Singh V. 4-Formyl-Pyrazole-3-Carboxylate: A Useful Aldo-X Bifunctional Precursor for the Syntheses of Pyrazole-fused/Substituted Frameworks. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.3045] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Nisha Devi
- Department of Chemistry; Dr B R Ambedkar National Institute of Technology; Jalandhar 144011 India
| | - Ravi Shankar
- Bio-Organic Chemistry Division; CSIR - Indian Institute of Integrative Medicine; Jammu 180001 India
| | - Virender Singh
- Department of Chemistry; Dr B R Ambedkar National Institute of Technology; Jalandhar 144011 India
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7
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Kumar S, Patel M, Saunthwal RK, Verma AK. Chemoselective Oxidative Esterification and Iodocyclization of Hydroxyalkynyl Aldehydes. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700375] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shiv Kumar
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | - Monika Patel
- Department of Chemistry; University of Delhi; Delhi- 110007 India
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8
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Pharmacomodulation of the Antimalarial Plasmodione: Synthesis of Biaryl- and N-Arylalkylamine Analogues, Antimalarial Activities and Physicochemical Properties. Molecules 2017; 22:molecules22010161. [PMID: 28106855 PMCID: PMC6155649 DOI: 10.3390/molecules22010161] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 01/08/2017] [Accepted: 01/12/2017] [Indexed: 12/15/2022] Open
Abstract
With the aim of increasing the structural diversity on the early antimalarial drug plasmodione, an efficient and versatile procedure to prepare a series of biaryl- and N-arylalkylamines as plasmodione analogues is described. Using the naturally occurring and commercially available menadione as starting material, a 2-step sequence using a Kochi-Anderson reaction and subsequent Pd-catalyzed Suzuki-Miyaura coupling was developed to prepare three representative biphenyl derivatives in good yields for antimalarial evaluation. In addition, synthetic methodologies to afford 3-benzylmenadione derivatives bearing a terminal -N(Me)₂ or -N(Et)₂ in different positions (ortho, meta and para) on the aryl ring of the benzylic chain of plasmodione were investigated through reductive amination was used as the optimal route to prepare these protonable N-arylalkylamine privileged scaffolds. The antimalarial activities were evaluated and discussed in light of their physicochemical properties. Among the newly synthesized compounds, the para-position of the substituent remains the most favourable position on the benzyl chain and the carbamate -NHBoc was found active both in vitro (42 nM versus 29 nM for plasmodione) and in vivo in Plasmodium berghei-infected mice. The measured acido-basic features of these new molecules support the cytosol-food vacuole shuttling properties of non-protonable plasmodione derivatives essential for redox-cycling. These findings may be useful in antimalarial drug optimization.
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9
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Cao Z, Zhu H, Meng X, Guan J, Zhang Q, Tian L, Sun X, Chen G, You J. Metal-Free Reaction ofortho-Carbonylated Alkynyl-Substituted Arylaldehydes with Common Amines: Selective Access to Functionalized Isoindolinone and Indenamine Derivatives. Chemistry 2016; 22:16979-16985. [DOI: 10.1002/chem.201603045] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Ziping Cao
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Hongbo Zhu
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Xin Meng
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Jun Guan
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Qiang Zhang
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Laijin Tian
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Xuejun Sun
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Guang Chen
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
| | - Jinmao You
- School of Chemistry and Chemical Engineering; Qufu Normal University; Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu; 273165 Shandong P. R. China
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10
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Saunthwal RK, Danodia AK, Patel M, Kumar S, Verma AK. Regioselective 5-endo-dig
Electrophilic Iodocyclization of Enediynes: A Convenient Route to Iodo-substituted Indenes and Cyclopenta-Fused Arenes. Chem Asian J 2016; 11:3001-3007. [DOI: 10.1002/asia.201601085] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Indexed: 12/25/2022]
Affiliation(s)
| | | | - Monika Patel
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | - Sushil Kumar
- Department of Chemistry; University of Delhi; Delhi- 110007 India
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11
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Aggarwal T, Kumar S, Verma AK. Iodine-mediated synthesis of heterocycles via electrophilic cyclization of alkynes. Org Biomol Chem 2016; 14:7639-53. [DOI: 10.1039/c6ob01054g] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Syntheses of heterocyclesvia5-exoor 6-endo-digiodocyclizations from alkynes.
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Affiliation(s)
- Trapti Aggarwal
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Sonu Kumar
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Research Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
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12
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Kumar S, Cruz-Hernández C, Pal S, Saunthwal RK, Patel M, Tiwari RK, Juaristi E, Verma AK. Tandem Approach to Benzothieno- and Benzofuropyridines from o-Alkynyl Aldehydes via Silver-Catalyzed 6-endo-dig Ring Closure. J Org Chem 2015; 80:10548-60. [DOI: 10.1021/acs.joc.5b01647] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sonu Kumar
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Carlos Cruz-Hernández
- Departamento
de Química, Centro de Investigación y de Estudios Avanzados, Apdo. Postal 14-740, México City 07000, Mexico
| | - Shilpi Pal
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rakesh K. Saunthwal
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Monika Patel
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rakesh K. Tiwari
- Chapman
University School of Pharmacy, Harry and Diane Rinker Health Science Campus, 9401 Jeronimo Road, Irvine, California 92618, United States
| | - Eusebio Juaristi
- Departamento
de Química, Centro de Investigación y de Estudios Avanzados, Apdo. Postal 14-740, México City 07000, Mexico
| | - Akhilesh K. Verma
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
- School
of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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13
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Saunthwal RK, Patel M, Kumar S, Verma AK. Cu(II)-catalyzed tandem synthesis of 2-imino[1,3]benzothiazines from 2-aminoaryl acrylates via thioamidation and concomitant chemoselective thia-Michael addition. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Wang J, Zhu HT, Li YX, Wang LJ, Qiu YF, Qiu ZH, Zhong MJ, Liu XY, Liang YM. Facile Synthesis of Halogenated Spiroketals via a Tandem Iodocyclization. Org Lett 2014; 16:2236-9. [DOI: 10.1021/ol500741a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jia Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Hai-Tao Zhu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Ying-Xiu Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Li-Jing Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yi-Feng Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Zi-Hang Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Mei-jin Zhong
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xue-Yuan Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
- State
Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical
Physics, Chinese Academy of Science, Lanzhou, 730000, P.R. China
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15
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Jha RR, Aggarwal T, Verma AK. Stereoselective tandem synthesis of oxazolo-fused pyrroloquinolines from o-alkynylaldehydes via Ag(I)-catalyzed regioselective 5-exo-dig ring closure. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Patel M, Saunthawal RK, Verma AK. Base-catalyzed stereoselective intermolecular addition of imidazoles onto alkynes: an easy access to imidazolyl enamines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.100] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Janreddy D, Kavala V, Kotipalli T, Rajawinslin RR, Kuo CW, Huang WC, Yao CF. Molecular iodine-mediated reaction of 2-(2-phenylethynyl)-Morita–Baylis–Hillman adducts: an easy route to naphthyl ketones and iodo-substituted isochromenes. Org Biomol Chem 2014; 12:8247-56. [DOI: 10.1039/c4ob00938j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The iodine mediated reaction of 2-(2-phenylethynyl)-MBH gives corresponding naphthyl ketones and iodo-substituted isochromenes.
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Affiliation(s)
- Donala Janreddy
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Taiwan 116, Republic of China
| | - Veerababurao Kavala
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Taiwan 116, Republic of China
| | - Trimurtulu Kotipalli
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Taiwan 116, Republic of China
| | - R. R. Rajawinslin
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Taiwan 116, Republic of China
| | - Chun-Wei Kuo
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Taiwan 116, Republic of China
| | - Wen-Chang Huang
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Taiwan 116, Republic of China
| | - Ching-Fa Yao
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Taiwan 116, Republic of China
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18
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Gawande SD, Kavala V, Zanwar MR, Kuo CW, Huang HN, He CH, Kuo TS, Yao CF. Molecular Iodine-Mediated Cascade Reaction of 2-Alkynylbenzaldehyde and Indole: An Easy Access to Tetracyclic Indoloazulene Derivatives. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300421] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Wang XX, Zan K, Shi SP, Zeng KW, Jiang Y, Guan Y, Xiao CL, Gao HY, Wu LJ, Tu PF. Quinolone alkaloids with antibacterial and cytotoxic activities from the fruits of Evodia rutaecarpa. Fitoterapia 2013; 89:1-7. [PMID: 23651559 DOI: 10.1016/j.fitote.2013.04.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/13/2013] [Accepted: 04/28/2013] [Indexed: 11/24/2022]
Abstract
Five new quinolone alkaloids, euocarpines A-E (16-20), four new natural products (1, 4, 12, and 14), and eleven known natural products were isolated from the fruits of Evodia rutaecarpa (Juss.) Benth. The structures of the new compounds were elucidated based on spectroscopic evidence. All compounds were evaluated for their antibacterial activity against three strains and for their cytotoxic activity against four human tumor cell lines. The results revealed that 5, 7-11, 13, 14, and 16-20 exhibited moderate antibacterial activities (MIC values: 4-128 μg/mL), and 9, 11, 14, and 17 exhibited moderate cytotoxic activities against HepG-2, Hela, BEL7402, and BEL7403 (IC50 values: 15.85-56.36 μM).
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Affiliation(s)
- Xiao-Xia Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
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20
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Verma AK, Kotla SKR, Choudhary D, Patel M, Tiwari RK. Silver-Catalyzed Tandem Synthesis of Naphthyridines and Thienopyridines via Three-Component Reaction. J Org Chem 2013; 78:4386-401. [DOI: 10.1021/jo400400c] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Akhilesh K. Verma
- Synthetic Organic
Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Siva K. Reddy Kotla
- Synthetic Organic
Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Deepak Choudhary
- Synthetic Organic
Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Monika Patel
- Synthetic Organic
Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rakesh K. Tiwari
- Department of Biomedical & Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
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21
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Verma AK, Jha RR, Chaudhary R, Tiwari RK, Danodia AK. 2-(1-Benzotriazolyl)pyridine: A Robust Bidentate Ligand for the Palladium-Catalyzed CC (Suzuki, Heck, Fujiwara-Moritani, Sonogashira), CN and CS Coupling Reactions. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200583] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Shukla SP, Tiwari R, Verma AK. Silver-catalyzed regioselective synthesis of acridines, quinolines, and naphthalenes from 3-(2-alkynyl)aryl-β-ketoesters. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.08.068] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Aggarwal T, Jha RR, Tiwari RK, Kumar S, Kotla SKR, Kumar S, Verma AK. Palladium-Catalyzed Regioselective [3 + 2] Annulation of Internal Alkynes and Iodo-pyranoquinolines with Concomitant Ring Opening. Org Lett 2012; 14:5184-7. [DOI: 10.1021/ol3022935] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Trapti Aggarwal
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Rajeev R. Jha
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Rakesh K. Tiwari
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Sonu Kumar
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Siva K. Reddy Kotla
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Sushil Kumar
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Akhilesh K. Verma
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
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24
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Verma AK, Jha RR, Chaudhary R, Tiwari RK, Reddy KSK, Danodia A. Copper-Catalyzed Tandem Synthesis of Indolo-, Pyrrolo[2,1-a]isoquinolines, Naphthyridines and Bisindolo/Pyrrolo[2,1-a]isoquinolines via Hydroamination of ortho-Haloarylalkynes Followed by C-2 Arylation. J Org Chem 2012; 77:8191-205. [DOI: 10.1021/jo301572p] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Akhilesh K. Verma
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Rajeev R. Jha
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Ritu Chaudhary
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Rakesh K. Tiwari
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
- Department of Biomedical & Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island, United States
| | - Kotla Siva K. Reddy
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Abhinandan Danodia
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
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25
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Joshi M, Patel M, Tiwari R, Verma AK. Base-Mediated Selective Synthesis of Diversely Substituted N-Heterocyclic Enamines and Enaminones by the Hydroamination of Alkynes. J Org Chem 2012; 77:5633-45. [DOI: 10.1021/jo300782n] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Megha Joshi
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Monika Patel
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rakesh Tiwari
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
- Department of Biomedical & Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
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Joshi M, Tiwari R, Verma AK. Regioselective Preferential Nucleophilic Addition of N-Heterocycles onto Haloarylalkynes over N-Arylation of Aryl Halides. Org Lett 2012; 14:1106-9. [DOI: 10.1021/ol203491p] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Megha Joshi
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India, and Department of Biomedical & Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Rakesh Tiwari
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India, and Department of Biomedical & Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Akhilesh Kumar Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India, and Department of Biomedical & Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
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