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Ultrasonic energy for construction of bioactive heterocycles. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ramarao S, Pothireddy M, Venkateshwarlu R, Moturu KMVR, Siddaiah V, Dandela R, Pal M. Cu(OAc)2 catalyzed ultrasound assisted rapid synthesis of isocoumarin derivatives bearing 3-oxobutyl moiety at C-4 position. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Venkatanarayana M, Nuchu R, Babu HS. Ultrasound assisted effective synthesis of benzopril based indole derivatives, docking studies: And there in vitro anti-proliferative effects on various cancer cell lines. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Suman K, Prashanth J, Rao KP, Subramanyam M, Anuradha V, Rao MVB. Facile Synthesis of 6-Phenyl-6h-chromeno [4, 3-b] Quinoline Derivatives using NaHSO4@SiO2 Re-usable Catalyst and Their Antibacterial Activity Study Correlated by Molecular Docking Studies. LETT DRUG DES DISCOV 2020. [DOI: 10.2174/1570180816666190731115809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background:
Heterocyclic compounds containing heteroatoms (O, N and S) as part of
five or six-membered cyclic moieties exhibited various potential applications, such as
pharmaceutical drugs, agrochemical products and organic materials. Among many known
heterocyclic moieties, quinoline and its derivatives are one of the privileged scaffolds found in many
natural products. In general, quinoline derivatives could be prepared by utilizing ortho-substituted
anilines and carbonyl compounds containing a reactive α-methylene group of well-known reaction
routes like Friedlander synthesis, Niemantowski synthesis and Pfitzinger synthesis. Moreover,
polysubstituted quinolones and their derivatives also had shown considerable interest in the fields of
organic and pharmaceutical chemistry in recent years.
Objective:
The main objective of our research work is towards the design and synthesis of
divergent biological-oriented, proactive analogues with potential pharmacological value inspired by
the anti-tubercular activity of 2-phenylquinoline analogues. In this study, we have been interested in
the design and synthesis of bioactive, 2, 4-diphenyl, 8-arylated quinoline analogues.
Methods:
6-phenyl-6h-chromeno [4, 3-b] quinoline derivatives were synthesized from 4-chloro-2-
phenyl-2H-chromene-3-carbaldehyde and various substituted aromatic anilines as starting materials
using sodium bisulfate embedded SiO2 re-usable catalyst. All these fifteen new compound structures
confirmed by spectral data 1H & 13C NMR, Mass, CHN analysis etc. Furthermore, all these new
compounds antibacterial activity strains recorded using the paper disc method. The compound
molecular structures were designed using molecular docking study by utilizing the crystallographic
parameters of S. Areus Murb protein.
Results:
A series of fifteen new quinoline derivatives synthesized in moderate to good yields using
sodium bisulfate embedded SiO2 re-usable catalyst. The molecular structures of these newly
synthesized compounds elucidated by the combination of spectral data along with the elemental
analysis. These compounds antibacterial activity study have shown moderate to good activity against,
Escherichia coli (Gram-negative) and Staphylococcus aureus (gram-positive) organisms. These
antibacterial activity results were also a very good correlation with molecular docking studies.
Conclusion:
In this study, fifteen new quinoline derivatives synthesized and structures confirmed by
spectral data. In fact, all the compounds have shown moderate to good antibacterial activity. In
general, the compounds containing the electron donor group at R1 position (R1 = OMe) and the
acceptor group at R2 positions (R2 = F or Cl) had shown good antibacterial activity. These antibacterial
activity results were also a very good correlation with molecular docking studies showing strong
binding energies with the highest value being, -12.45 Kcal mol-1 with S. aureus MurB receptor.
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Affiliation(s)
- Kancharla Suman
- New Generation Materials Lab (NGML), Department of Science and Humanities, Vignan's Foundation for Science Technology and Research (VFSTR) (Deemed to be University), Vadlamudi, Guntur 522 213, Andhra Pradesh, India
| | - Jyothi Prashanth
- Department of Physics, Kakatiya University, Warangal 506009, Telangana, India
| | - Koya Prabhakara Rao
- New Generation Materials Lab (NGML), Department of Science and Humanities, Vignan's Foundation for Science Technology and Research (VFSTR) (Deemed to be University), Vadlamudi, Guntur 522 213, Andhra Pradesh, India
| | - Madala Subramanyam
- New Generation Materials Lab (NGML), Department of Science and Humanities, Vignan's Foundation for Science Technology and Research (VFSTR) (Deemed to be University), Vadlamudi, Guntur 522 213, Andhra Pradesh, India
| | - Vejendla Anuradha
- New Generation Materials Lab (NGML), Department of Science and Humanities, Vignan's Foundation for Science Technology and Research (VFSTR) (Deemed to be University), Vadlamudi, Guntur 522 213, Andhra Pradesh, India
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Kumar JS, Thirupataiah B, Medishetti R, Ray A, Bele SD, Hossain KA, Reddy GS, Edwin RK, Joseph A, Kumar N, Shenoy GG, Rao CM, Pal M. Rosuvastatin based novel 3-substituted isocoumarins / 3-alkylidenephthalides: Ultrasound assisted synthesis and identification of new anticancer agents. Eur J Med Chem 2020; 201:112335. [PMID: 32599323 DOI: 10.1016/j.ejmech.2020.112335] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 03/25/2020] [Accepted: 04/13/2020] [Indexed: 12/13/2022]
Abstract
A new class of 3-substituted isocoumarin/3-alkylidenephthalide based novel small molecules derived from rosuvastatin were designed and synthesized via the ultrasound assisted Cu-mediated coupling-cyclization in a single pot with remarkable regioselectivity. The phthalides were generally obtained at lower temperature whereas the use of elevated temperature afforded isocoumarins. Two compounds e.g. 3n and 4d showed promising cytotoxic effects when tested against HCT 116, HepG2 and PA-1 cell lines at 10 μM. Indeed, 4d was found to be a potent cytotoxic agent (IC50 ∼ 0.76-4.51 μM). Both 3n and 4d were tested for their effects on PANC-1 cells. Considerable decrease in p-Akt substrates shown by 4d and 3n at 50 μM (western blot analysis) indicated their ability to inhibit p-Akt signal transduction pathway and arresting growth of PANC-1 cells in vitro. This was further supported by the cytotoxic effect of 4d on PANC-1 cells (MTT assay) that was better than rosuvastatin. While none of 3n and 4d showed any significant effect on non-cancerous HEK cell line (indicating their potential selectivity towards cancer cells) these compounds were further evaluated for their toxicities in Zebrafish embryo. The NOAEL (No Observed Adverse Effect Level) for teratogenicity, hepatotoxicity and cardiotoxicity was found to be 100 μM for both compound. Thus, 4d as a novel and potent but safer cytotoxic agent with potential to treat colorectal/ovarian and pancreatic cancer is of further medicinal interest.
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Affiliation(s)
- Jetta Sandeep Kumar
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India; Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - B Thirupataiah
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India; Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - Raghavender Medishetti
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India; Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - Aramita Ray
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India
| | - Shilpak Dilip Bele
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India
| | - Kazi Amirul Hossain
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India
| | - Gangireddy Sujeevan Reddy
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India; Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - Rebecca Kristina Edwin
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India
| | - Alex Joseph
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - Nitesh Kumar
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - Gautham G Shenoy
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - C Mallikarjuna Rao
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal, 576 104, Karnataka, India
| | - Manojit Pal
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500 046, India.
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Thirupataiah B, Reddy GS, Ghule SS, Kumar JS, Mounika G, Hossain KA, Mudgal J, Mathew JE, Shenoy GG, Parsa KVL, Pal M. Synthesis of 11,12-dihydro benzo[c]phenanthridines via a Pd-catalyzed unusual construction of isocoumarin ring/FeCl 3-mediated intramolecular arene-allyl cyclization: First identification of a benzo[c]phenanthridine based PDE4 inhibitor. Bioorg Chem 2020; 97:103691. [PMID: 32143019 DOI: 10.1016/j.bioorg.2020.103691] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/09/2019] [Accepted: 02/20/2020] [Indexed: 11/16/2022]
Abstract
In spite of their various pharmacological properties the anti-inflammatory potential of benzo[c]phenanthridines remained underexplored. Thus, for the first time PDE4 inhibitory potential of 11,12-dihydro benzo[c]phenanthridine/benzo[c]phenanthridine was assessed in vitro. Elegant synthesis of these compounds was performed via a multi-step sequence consisting of a Pd-catalyzed unusual construction of 4-allyl isocoumarin ring and FeCl3-mediated intramolecular regio- as well as site-selective arene-allyl cyclization as key steps. The overall strategy involved Sonogashira coupling followed by isocoumarin and isoquinolone synthesis, then chlorination and subsequent cyclization to afford a range of 11,12-dihydro derivatives. One of these dihydro compounds was converted to the corresponding benzo[c]phenanthridine that showed concentration dependent inhibition of PDE4B affording an initial hit molecule. The SAR study suggested that 11,12-dihydro analogs were less potent than the compound having unsaturation at the same part of the ring.
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Affiliation(s)
- B Thirupataiah
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India; Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Gangireddy Sujeevan Reddy
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India; Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Shailendra S Ghule
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Jetta Sandeep Kumar
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India; Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Guntipally Mounika
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Kazi Amirul Hossain
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Jayesh Mudgal
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Jessy E Mathew
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Gautham G Shenoy
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhav Nagar, Manipal 576 104, Karnataka, India
| | - Kishore V L Parsa
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Manojit Pal
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India.
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