- Design, synthesis, anticancer, antibacterial, and antifungal evaluation of 4-aminoquinoline-1,3,5-triazine derivatives
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A series of 4-aminoquinoline 1,3,5-triazine derivatives were synthesized and evaluated for anticancer activity against cancer cell lines HeLa, MCF-7, HL-60, HepG2 where these derivatives exert significant anticancer activity. The molecules found nontoxic against MCF-12A. The molecules also showed potent inhibition of EGFR-TK as compared to eroltinib in enzyme-based assay. The newly synthesized derivatives were screened for their in vitro antibacterial and antifungal activity against Bacillus subtilis, Bacillus cereus, Staphylococcus aureus, Proteus vulgaris, Escherichia coli, Pseudomonas aeruginosa and Candida albicans, Aspergillus niger, Aspergillus fumigatus using cefixime and fluconazole as standard. Antibacterial screening results suggest that compound 7c showed potent activity against S. aureus, P. aeruginosa, and P. vulgaris. In antifungal screening, compound 7b showed significant activity against A. niger, A. fumigatus and moderate activity against C. albicans.
- Bhat, Hans Raj,Ghosh, Surajit Kumar,Masih, Anup,Shakya, Anshul,Singh, Udaya Pratap
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- Cardioprotective effect of novel sulphonamides-1,3,5-triazine conjugates against ischaemic–reperfusion injury via selective inhibition of MMP-9
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Diseases affecting cardiovascular system are ranked as a top most cause of morbidity and mortality. Herein, a novel class sulphonamides-1,3,5-triazine conjugates have been synthesized and tested for inhibitory activity against MMP-2 and MMP-9. The results of the study showed that these molecules efficiently inhibit MMP-9 than MMP-2, revealing compound 8e as the most potent inhibitor (IC50?=?2.34?±?0.56?nm). Due to involvement of MMP-9 in many cardiovascular diseases, particularly in myocardial ischaemia (MI), compound 8e was further subjected for the determination of the protective effect on isoproterenol (ISO)-induced myocardial injury in rats.
- Zheng, Xiao-Zhu,Zhou, Jia-Li,Ye, Jing,Guo, Pei-Pei,Lin, Chun-Shui
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p. 756 - 765
(2016/10/19)
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- Discovery of novel 1,3,5-triazine-thiazolidine-2,4-diones as dipeptidyl peptidase-4 inhibitors with antibacterial activity targeting the S1 pocket for the treatment of type 2 diabetes
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A novel series of 1,3,5-triazine-thiazolidine-2,4-diones was synthesized and characterized by a number of analytical and spectroscopic techniques. The molecules were screened for the in vitro inhibition of dipeptidyl peptidase-4 and compound 7a showed the most prominent inhibition with IC50 = 6.25 μM. The other compounds showed considerable inhibition (IC50 = 12.11-49.21 μM). Docking studies indicated that the lipophilic thiazolidine-2,4-dione fragment of ligand 7a was oriented towards the tight lipophilic cavity of the S1 pocket of the active site formed by residues such as Tyr631, Val656, Trp659, Tyr662, Tyr666 and Val711 via the formation of H-bonds with Tyr547. One of the amines present on the wings of the triazine formed a hydrogen bond with Glu205, a vital residue for the N-terminal recognition site with an efficient CDOCKER interaction energy. In a bacterial inhibition study, the entire set of compounds showed excellent activity and, in some instances, were found to be equipotent to the cefixime used as a standard.
- Srivastava, Jitendra Kumar,Dubey, Pragya,Singh, Saumya,Bhat, Hans Raj,Kumawat, Mukesh Kumar,Singh, Udaya Pratap
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p. 14095 - 14102
(2015/02/19)
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- Synthesis and antibacterial activity of some novel 4-benzyl-piperazinyl-s- triazine derivatives
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Considerable interest has been attracted in s-triazine scaffold and its derivatives because of their large variety of pharmacological activities. In this project, a series of 4-benzyl-piperazinyl-s-triazine derivatives 5a to 5j were synthesized by three steps substitution reaction of cyanuric chloride with various nucleophilic compounds in presence of a base. Molecular structures of the synthesized compounds were elucidated by FTIR, 1H NMR, 13C NMR, MS spectral data and elemental analyses. The in vivo antibacterial activity was evaluated by broth dilution method against representative four Gram-positive and four Gram-negative bacterial strains. Many compounds have displayed comparable better antibacterial activity against Bacillus subtilis, Staphylococcus aureus, Staphylococcus epidermis and Pseudomonas aeruginosa with reference to streptomycin.
- Jana,Das
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p. 186 - 190
(2013/02/22)
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- Antimalarial activity and docking studies of novel bi-functional hybrids derived from 4-aminoquinoline and 1,3,5-triazine against wild and mutant malaria parasites as pf-DHFR inhibitor
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Bi-functional conjugates comprised of 4-aminoquinoline and 1,3,5-triazine were synthesized through facile synthetic routes. These compounds were rigorously screened for determination of their antimalarial activity against wild and mutant cultured Plasmodium falciparum. The results disclosed that the conjugates have considerable antimalarial activity against both wild and mutant parasites with marked variation on changing the pattern of substitutions. The observed activity profiles were additionally substantiated by docking studies on both wild and quadruple mutant P. falciparum dihydrofolate reductase thymidylate synthase (pf-DHFR-TS).
- Bhat, Hans Raj,Singh, Udaya Pratap,Gahtori, Prashant,Ghosh, Surajit Kumar,Gogoi, Kabita,Prakash, Anil,Singh, Ramendra K.
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p. 2942 - 2952
(2013/05/08)
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- 4-Aminoquinoline-1,3,5-triazine: Design, synthesis, in vitro antimalarial activity and docking studies
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A series of hybrid 4-aminoquinoline 1,3,5-triazine derivatives was synthesized and their chemical structure were confirmed by 1H-NMR, 13C-NMR, FT-IR and mass spectrometric analyses. In vitro antimalarial activity of these compounds was evaluated against chloroquine-sensitive (3D-7) and chloroquine resistant (RKL-2) strains of P. falciparum. Results showed that all compounds had considerable antimalarial activity against both the strains and further docking studies were performed on both wild type (1J3I.pdb) and quadruple mutant (N51I, C59R, S108 N, I164L, 3QG2.pdb) pf-DHFR-TS to quantify the structural parameter necessary for the activity.
- Bhat, Hans Raj,Singh, Udaya Pratap,Gahtori, Prashant,Ghosh, Surajit Kumar,Gogoi, Kabita,Prakash, Anil,Singh, Ramendra K.
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p. 2654 - 2662
(2013/09/12)
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- Design, facile synthesis, antibacterial activity and structure-activity relationship of novel di- and tri-substituted 1,3,5-triazines
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Due to overwhelming generation of drug resistant microorganisms, there is an urgent need to develop novel chemotherapeutic agents. In continuation of our research on discovery of novel heterocyclic scaffolds from 1,3,5-triazine, present study deals with design and development of some novel di- and tri-substituted 1,3,5-triazine derivatives. The synthesis of title analogues were accomplished by SNAr reaction and subsequently underwent rigorous antibacterial screening against a panel of representative Gram-negative and Gram-positive bacteria. Screening results revealed that minor structural variation may induce drastic changes in activity. Whereas, amine bridge and piprazine was termed as pivotal structural fragments necessary for generation and escalation of bio-activity. The structures of newly synthesized compounds were ascertained on the basis of their analytical and spectral profiles.
- Ghosh, Surajit Kumar,Saha, Ashmita,Hazarika, Bornali,Singh, Udaya Pratap,Bhat, Hans Raj,Gahtori, Prashant
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p. 329 - 335
(2012/05/20)
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- Design, Facile Synthesis, and Antibacterial Activity of Hybrid 1,3,4-thiadiazole-1,3,5-triazine Derivatives Tethered via -S- Bridge
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Some hybrid 1,3,4-thiadiazole-1,3,5-triazine derivatives tethered via -S- bridge were synthesized and characterized with the aid of spectroscopic and elemental analysis. These hybrid conjugates were then investigated for their antibacterial activity against selected Gram-positive and Gram-negative bacteria. Excellent to moderate antibacterial activity was presented by the target compounds.
- Dubey, Vaibhav,Pathak, Manish,Bhat, Hans R.,Singh, Udaya P.
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p. 598 - 604
(2012/11/07)
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- Synthesis and antibacterial evaluation of series of novel tri-substituted-s-triazine derivatives
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Two novel series of s-triazine derivatives (6a-e and 7a-f) were synthesized with various aromatic and heterocyclic amines. The synthesized compounds were subsequently evaluated for their in vitro antibacterial activity against three gram-positive viz. Bacillus subtilis (NCIM- 2063), Bacillus cereus (NCIM-2156), Staphylococcus aureus (NCIM-2079) and gram-negative bacteria viz. Pseudomonas aeruginosa (NCIM-2036), Escherichia coli (NCIM-2065) and Klebseilla pneumoniae (NCIM-2706) by the broth dilution method as recommended by the National Committee for Clinical Laboratory Standards (NCCLS) using streptomycin as reference standard. Structures of the synthesized compounds were elucidated on the basis of elemental analyses and spectral data. Springer Science+Business Media, LLC 2010.
- Singh, Udaya Pratap,Singh, Ramendra Kumar,Bhat, Hans Raj,Subhashchandra, Yadav Pankajkumar,Kumar, Vikas,Kumawat, Mukesh Kumar,Gahtori, Prashant
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experimental part
p. 1603 - 1610
(2012/06/05)
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- Simple and efficient synthetic routes to bioactive s-triazinyl dithiocarbamate derivatives
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Series of 2,4-diarylamino-6-[N-(3′-methylphenyl)dithiocarbamoyl]-s- triazines (4a-l) and 2,4-bis[N-(3′-methylphenyl)dithiocarbamoyl]-6- arylamino-s-triazines (7a-l) were synthesized by two different synthetic routes. In the first route (A), 2,4,6-tricholoro-s-triazine (1) was condensed with N-(3-methylphenyl)ammoniumdithiocarbamate to afford compounds 3 or 6, which on reaction with different aryl amines afforded compounds 4a-l or 7a-l. In the second route (B), condensation of 1 with different aryl amines yielded compounds 2a-l or 5a-l. On further treatment with N-(3-methylphenyl) ammoniumdithiocarbamate these afforded compounds 4a-l or 7a-l. The newly synthesized compounds 4a-l and 7a-l were characterized by elemental analyses, infrared (IR), and 1H nuclear magnetic resonance (NMR) spectroscopic investigation. All the products were evaluated for their antibacterial and antifungal activity.
- Desai,Dodiya,Trivedi,Shah
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p. 495 - 506
(2008/12/23)
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- An efficient, "green" approach to aryl amination of cyanuric chloride using acetic acid as solvent
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(Chemical Equation Presented) Acetic acid is an inexpensive and environmentally friendly solvent for facile, clean and high-yielding aryl amination of cyanuric chloride with aromatic amines, including nitroanilines. Aryl animation in acetic acid medium and isolation protocol are greatly simplified as compared to previously reported procedures. Under proper conditions, it is possible to attach the same or different aniline residues in a controlled way to obtain in excellent yields symmetrical and unsymmetrical 1,3,5-triazine derivatives, respectively.
- Kolmakov, Kirill A.
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p. 533 - 539
(2008/09/18)
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