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Alagarsamy V, Shyam Sundar P, Raja Solomon V, Narendhar B, Sulthana MT, Rohitha K, Dhanwar S, Dharshini Aishwarya A, Murugesan S. Pharmacophore modelling-based drug repurposing approaches for monkeypox therapeutics. J Biomol Struct Dyn 2023; 41:10678-10689. [PMID: 36905675 DOI: 10.1080/07391102.2023.2188428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/05/2022] [Indexed: 03/13/2023]
Abstract
Monkeypox is a zoonotic viral disease that mainly affects tropical rainforest regions of central and west Africa, with sporadic exportations to other places. Since there is no cure, treating monkeypox with an antiviral drug developed for smallpox is currently acceptable. Our study mainly focused on finding new therapeutics to target monkeypox from existing compounds or medications. It is a successful method for discovering or developing medicinal compounds with novel pharmacological or therapeutic applications. In this study, homology modelling developed the Monkeypox VarTMPK (IMNR) structure. Ligand-based pharmacophore was generated using the best docking pose of standard ticovirimat. Further, molecular docking analysis showed compounds, tetrahydroxycurcumin, procyanidin, rutin, vicenin-2, kaempferol 3-(6''-malonylglucoside) were the top five binding energy compounds against VarTMPK (1MNR). Furthermore, we carried out MD simulations for 100 ns for the six compounds, including reference based on the binding energies and interactions. MD studies revealed that as ticovirimat interacted with residues Lys17, Ser18, and Arg45, all the above five compounds interacted with the same amino acids at the active site during docking and simulation studies. Among all the compounds, ZINC4649679 (Tetrahydroxycurcumin) was shown to have the highest binding energy -9.7 kcal/mol and also observed stable protein-ligand complex during MD studies. ADMET profile estimation showed that the docked phytochemicals were safe. However, further biological assessment through a wet lab is essential to measure the efficacy and safety of the compounds.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - P Shyam Sundar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - V Raja Solomon
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - B Narendhar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - M T Sulthana
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - Kotha Rohitha
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - Sangeeta Dhanwar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - A Dharshini Aishwarya
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, India
| | - S Murugesan
- Department of Pharmacy, BITS, Pilani, Pilani, Rajasthan, India
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Alagarsamy V, Solomon VR, Murugesan S, Sundar PS, Muzaffar-Ur-Rehman MD, Chandu A, Aishwarya AD, Narendhar B, Sulthana MT, Ravikumar V. In Silico Screening of Some Active Phytochemicals to Identify Promising Inhibitors Against SARS-CoV-2 Targets. Curr Drug Discov Technol 2023:CDDT-EPUB-134971. [PMID: 37861016 DOI: 10.2174/0115701638243222230920051050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 07/29/2023] [Accepted: 08/09/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND There are very few small-molecule drug candidates developed against SARS-CoV-2 that have been revealed since the epidemic began in November 2019. The typical medicinal chemistry discovery approach requires more than a decade of the year of painstaking research and development and a significant financial guarantee, which is not feasible in the challenge of the current epidemic. OBJECTIVE This current study proposes to find and identify the most effective and promising phytomolecules against SARS-CoV-2 in six essential proteins (3CL protease, Main protease, Papain- Like protease, N-protein RNA binding domain, RNA-dependent RNA polymerase, and Spike receptor binding domain target through in silico screening of 63 phytomolecules from six different Ayurveda medicinal plants. METHODS The phytomolecules and SARS-CoV-2 proteins were taken from public domain databases such as PubChem and RCSB Protein Data Bank. For in silico screening, the molecular interactions, binding energy, and ADMET properties were investigated. RESULTS The structure-based molecular docking reveals some molecules' greater affinity towards the target than the co-crystal ligand. Our results show that tannic acid, cyanidin-3-rutinoside, zeaxanthin, and carbolactone are phytomolecules capable of inhibiting SARS-CoV-2 target proteins in the least energy conformations. Tannic acid had the least binding energy of -8.8 kcal/mol, which is better than the binding energy of its corresponding co-crystal ligand (-7.5 kcal/mol) against 3 CL protease. Also, it has shown the least binding energy of -9.9 kcal/mol with a more significant number of conventional hydrogen bond interactions against the RdRp target. Cyanidin-3-rutinoside showed binding energy values of -8.8 and -7.6 kcal/mol against Main protease and Papain-like protease, respectively. Zeaxanthin was the top candidate in the N protein RBD with a binding score of - 8.4 kcal/mol, which is slightly better when compared to a co-crystal ligand (-8.2 kcal/mol). In the spike, carbolactone was the suitable candidate with the binding energy of -7.2 kcal/mol and formed a conventional hydrogen bond and two hydrophobic interactions. The best binding affinity-scored phytomolecules were selected for the MD simulations studies. CONCLUSION The present in silico screening study suggested that active phytomolecules from medicinal plants could inhibit SARS-CoV-2 targets. The elite docked compounds with drug-like properties have a harmless ADMET profile, which may help to develop promising COVID-19 inhibitors.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy - 502 294, Gr. Hyderabad, India
| | - V Raja Solomon
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy - 502 294, Gr. Hyderabad, India
| | - S Murugesan
- Department of Pharmacy, BITS Pilani, Pilani Campus, Pilani-333031, India
| | - P Shyam Sundar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy - 502 294, Gr. Hyderabad, India
| | | | - Ala Chandu
- Department of Pharmacy, BITS Pilani, Pilani Campus, Pilani-333031, India
| | - A Dharshini Aishwarya
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy - 502 294, Gr. Hyderabad, India
| | - B Narendhar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy - 502 294, Gr. Hyderabad, India
| | - M T Sulthana
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy - 502 294, Gr. Hyderabad, India
| | - V Ravikumar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy - 502 294, Gr. Hyderabad, India
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Sabarees G, Gouthaman S, Alagarsamy V, Velmurugan V, Solomon VR. Isolation, Functionalization, In Silico Investigation, and Synthesis of 1,8-Cineole Analog as Antitubercular Agent Targeting InhA. Russ J Bioorg Chem 2023. [DOI: 10.1134/s1068162023020206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Kulkarni VS, Alagarsamy V, Solomon VR, Jose PA, Murugesan S. Drug Repurposing: An Effective Tool in Modern Drug Discovery. Russ J Bioorg Chem 2023; 49:157-166. [PMID: 36852389 PMCID: PMC9945820 DOI: 10.1134/s1068162023020139] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/23/2022] [Accepted: 09/25/2022] [Indexed: 02/24/2023]
Abstract
Drug repurposing is using an existing drug for a new treatment that was not indicated before. It has received immense attention during the COVID-19 pandemic emergency. Drug repurposing has become the need of time to fasten the drug discovery process and find quicker solutions to the over-exerted healthcare scenario and drug needs. Drug repurposing involves identifying the drug, evaluating its efficiency using preclinical models, and proceeding to phase II clinical trials. Identification of the drug candidate can be made through computational and experimental approaches. This approach usually utilizes public databases for drugs. Data from primary and translational research, clinical trials, anecdotal reports regarding off-label uses, and other published human data information available are included. Using artificial intelligence algorithms and other bioinformatics tools, investigators systematically try to identify the interaction between drugs and protein targets. It can be combined with genetic data, clinical analysis, structure (molecular docking), pathways, signatures, targets, phenotypes, binding assays, and artificial intelligence to get an optimum outcome in repurposing. This article describes the strategies involved in drug repurposing and enlists a series of repurposed drugs and their indications.
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Affiliation(s)
- V. S. Kulkarni
- MNR College of Pharmacy, MNR Nagar, Fasalwadi, Sangareddy, Hyderabad 502294 India
| | - V. Alagarsamy
- MNR College of Pharmacy, MNR Nagar, Fasalwadi, Sangareddy, Hyderabad 502294 India
| | - V. R. Solomon
- MNR College of Pharmacy, MNR Nagar, Fasalwadi, Sangareddy, Hyderabad 502294 India
| | - P. A. Jose
- MNR College of Pharmacy, MNR Nagar, Fasalwadi, Sangareddy, Hyderabad 502294 India
| | - S. Murugesan
- Department of Pharmacy, BITS Pilani, 333031 Pilani Campus, Pilani India
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Alagarsamy V, Solomon VR, Sundar PS, Kulkarni VS, Sulthana MT, Aishwarya AD, Narendhar B, Murugesan S. Computational Search for Potential COVID-19 Drugs from Ayurvedic Medicinal Plants to Identify Potential Inhibitors against SARS-CoV-2 Targets. Curr Comput Aided Drug Des 2023; 19:51-67. [PMID: 36424783 DOI: 10.2174/1573409919666221117145404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/04/2022] [Accepted: 09/28/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND To date, very few small drug molecules are used for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that has been discovered since the epidemic commenced in November 2019. SARS-CoV-2 RdRp and spike protein are essential targets for drug development amidst whole variants of coronaviruses. OBJECTIVE This study aims to discover and recognize the most effective and promising small molecules against SARS-CoV-2 RNA-dependent RNA polymerase (RdRp) and spike protein targets through molecular docking screening of 39 phytochemicals from five different Ayurveda medicinal plants. METHODS The phytochemicals were downloaded from PubChem, and SARS-CoV-2 RdRp and spike protein were taken from the protein data bank. The molecular interactions, binding energy, and ADMET properties were analyzed. RESULTS Molecular docking analysis identified some phytochemicals, oleanolic acid, friedelin, serratagenic acid, uncinatone, clemaphenol A, sennosides B, trilobine and isotrilobine from ayurvedic medicinal plants possessing greater affinity against SARS-CoV-2-RdRp and spike protein targets. Two molecules, namely oleanolic acid and sennosides B, with low binding energies, were the most promising. Furthermore, based on the docking score, we carried out MD simulations for the oleanolic acid and sennosides B-protein complexes. CONCLUSION Molecular ADMET profile estimation showed that the docked phytochemicals were safe. The present study suggested that active phytochemicals from medicinal plants could inhibit RdRp and spike protein of SARS-CoV-2.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - V Raja Solomon
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - P Shyam Sundar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - Vishaka S Kulkarni
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - M T Sulthana
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - A Dharshini Aishwarya
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - B Narendhar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - S Murugesan
- Department of Pharmacy, BITS Pilani, Pilani Campus, Pilani, 333031, India
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Alagarsamy V, Sundar PS, Narendhar B, Sulthana MT, Kulkarni VS, Aishwarya AD, Solomon VR, Murugesan S, Jubie S, Rohitha K, Dhanwar S. An In silico Investigation to Identify Promising Inhibitors for SARS-CoV-2 M pro Target. Med Chem 2023; 19:925-938. [PMID: 37069723 DOI: 10.2174/1573406419666230413112802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 02/04/2023] [Accepted: 02/16/2023] [Indexed: 04/19/2023]
Abstract
BACKGROUND A limited number of small molecules against SARS-CoV-2 has been discovered since the epidemic commenced in November 2019. The conventional medicinal chemistry approach demands more than a decade of the year of laborious research and development and a substantial financial commitment, which is not achievable in the face of the current epidemic. OBJECTIVE This study aims to discover and recognize the most effective and promising small molecules by interacting SARS-CoV-2 Mpro target through computational screening of 39 phytochemicals from five different Ayurvedic medicinal plants. METHODS The phytochemicals were downloaded from Research Collaboratory for Structural Bioinformatics (RCSB) Protein Data Bank (PDB) PubChem, and the SARS-CoV-2 protein (PDB ID: 6LU7; Mpro) was taken from the PDB. The molecular interactions, binding energy, and ADMET properties were analyzed. RESULTS The binding affinities were studied using a structure-based drug design of molecular docking, divulging 21 molecules possessing greater to equal affinity towards the target than the reference standard. Molecular docking analysis identified 13 phytochemicals, sennoside-B (-9.5 kcal/mol), isotrilobine (-9.4 kcal/mol), trilobine (-9.0 kcal/mol), serratagenic acid (-8.1 kcal/mol), fistulin (-8.0 kcal/mol), friedelin (-7.9 kcal/mol), oleanolic acid (-7.9 kcal/mol), uncinatone (-7.8 kcal/mol), 3,4-di- O-caffeoylquinic acid (-7.4 kcal/mol), clemaphenol A (-7.3 kcal/mol), pectolinarigenin (-7.2 kcal/mol), leucocyanidin (-7.2 kcal/mol), and 28-acetyl botulin (-7.2 kcal/mol) from ayurvedic medicinal plants phytochemicals possess greater affinity than the reference standard Molnupiravir (-7.0 kcal/mol) against SARS-CoV-2-Mpro. CONCLUSION Two molecules, namely sennoside-B, and isotrilobine with low binding energies, were predicted as most promising. Furthermore, we carried out molecular dynamics simulations for the sennoside-B protein complexes based on the docking score. ADMET properties prediction confirmed that the selected docked phytochemicals were optimal. These compounds can be investigated further and utilized as a parent core molecule to create novel lead molecules for preventing COVID-19.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - P Shyam Sundar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - B Narendhar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - M T Sulthana
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - Vishaka S Kulkarni
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - A Dharshini Aishwarya
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - V Raja Solomon
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - S Murugesan
- Department of Pharmacy, Pilani, Birla Institute of Technology & Sciences Pilani Campus, Pilani-333031, India
| | - S Jubie
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, Udhagamandalam, 643001, India
| | - K Rohitha
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
| | - Sangeeta Dhanwar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, 502 294, Gr. Hyderabad, India
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Sabarees G, Tamilarasi G, Velmurugan V, Alagarsamy V, Sibuh BZ, Sikarwar M, Taneja P, Kumar A, Gupta PK. Emerging trends in silk fibroin based nanofibers for impaired wound healing. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Alagarsamy V, Narendhar B, Chitra K, Sriram D, Sarvanan G, Solomon VR. Design, Synthesis, and Structure–Activity Relationships of Novel N-Substituted-5-phenyl-[1,2,4]triazolo[1,5-c]quinazolin-2-amine for Their Anti-HIV and Antibacterial Activities. Russ J Bioorg Chem 2022. [DOI: 10.1134/s106816202206005x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Alagarsamy V, Solomon VR, Sulthana MT, Sundar PS, Aishwarya AD, Narendhar B. Screening Active Phytochemicals of Some Ayurvedic Medicinal Plants to Identify Potential Inhibitors against SARS-CoV-2 Mpro by Computational Investigation. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180819666220929151127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Severe acute respiratory syndrome coronavirus 2 main protease (SARS-CoV-2 Mpro) is an important target for drug development amidst whole variants of coronaviruses, a vital protein for the replication cycle of virus.
Objective:
The main aim of this study is to discover and recognize the most effective and promising molecules against Mpro enzyme through molecular docking screening of 120 phytochemicals from six different Ayurveda medicinal plants.
Methods:
The phytochemicals were downloaded from PubChem, and SARS-CoV-2 Mpro was taken from the protein data bank. The molecular interactions, binding energy, and ADMET properties were analyzed.
Results:
Molecular docking analysis identified 10 phytochemicals, castalagin (-10.4 kcal/mol), wedelolactone (-8.0 kcal/mol), arjungenin (-7.7 kcal/mol), betulin (-7.7 kcal/mol), galbacin (-7.6 kcal/mol), shinpterocarpin (-7.6 kcal/mol), liquirtin (-7.4 kcal/mol), cordioside (-7.3 kcal/mol), licopyranocoumarin (-7.3 kcal/mol), and daucosterol (-7.1 kcal/mol) from different kinds of ayurvedic medicinal plants’ phytochemicals possessing greater affinity against Mpro of SARS-CoV-2. Two molecules, namely castalagin and wedelolactone, with low binding energies were the most promising. Furthermore, we carried out MD simulations for the castalagin complexes based on the docking score.
Conclusion:
Molecular ADMET profile estimation showed the docked phytochemicals to be safe. The present study suggested that active phytochemicals from medicinal plants could inhibit Mpro of SARS-CoV-2.
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Affiliation(s)
- V. Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy -502 294, Gr. Hyderabad, India
| | - V. Raja Solomon
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy -502 294, Gr. Hyderabad, India
| | - M. T. Sulthana
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy -502 294, Gr. Hyderabad, India
| | - P. Shyam Sundar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy -502 294, Gr. Hyderabad, India
| | - A. Dharshini Aishwarya
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy -502 294, Gr. Hyderabad, India
| | - B. Narendhar
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy -502 294, Gr. Hyderabad, India
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Alagarsamy V, Sulthana MT, Chitra K, Solomon VR, Saravanan G. Design, Synthesis, and Structure–Activity Relationships of Novel 1-(Substituted)-2-Methyl-3-(4-Oxo-2-Methylquinazolin-3(4H)-yl) Isothioureas for Their Anti-HIV and Antibacterial Activities. Russ J Bioorg Chem 2022. [DOI: 10.1134/s1068162022030025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Narendhar B, Chitra K, Alagarsamy V. Synthesis of New 1-Substituted-3-(3-(2-Chlorophenyl)-4-Oxo-3,4-Dihydrobenzopyrimidin-2-Ylamino)Isothioureas as Anti-HIV and Antibacterial Agents. Pharm Chem J 2021. [DOI: 10.1007/s11094-021-02371-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sulthana MT, Chitra K, Alagarsamy V, Saravanan G, Solomon VR. Anti-HIV and Antibacterial Activities of Novel 2-(3-Substituted-4-oxo-3,4-dihydroquinazolin-2-yl)-2,3-dihydrophthalazine-1,4-diones. Russ J Bioorg Chem 2021. [DOI: 10.1134/s1068162021010246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gobinath M, Subramanian N, Alagarsamy V, Nivedhitha S, Solomon VR. Design and Synthesis of 1-Substituted-4-(4-Nitrophenyl)-[1,2,4]triazolo[4,3-a]quinazolin-5(4H)-ones as a New Class of Antihistaminic Agents. Russ J Bioorg Chem 2020. [DOI: 10.1134/s1068162020030085] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sheorey RV, Thangathiruppathy A, Alagarsamy V. Synthesis and Pharmacological Evaluation of 3-propyl-2-substitutedamino-3H-quinazolin-4-ones as Analgesic and Anti-Inflammatory Agents. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.1973] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- R. V. Sheorey
- Research Scholar, Department of Pharmacy; Karpagam University, Eachanari Post; Coimbatore 641 021 Tamil Nadu India
| | - A. Thangathiruppathy
- Department of Pharmacology; SB College of Pharmacy; Sivakasi 626 130 Tamil Nadu India
| | - V. Alagarsamy
- Medicinal Chemistry Research Laboratory; MNR College of Pharmacy; Sangareddy Gr. Hyderabad 502 294 Andhra Pradesh India
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Alagarsamy V, Anjana GV, Sulthana MT, Parthiban P, Solomon VR. Antimicrobial activities of some synthesized 1-(3-(2-methylphenyl)-4-Oxo-3H-quinazolin-2-yl-4-(substituted)thiosemicarbazide derivatives. Russ J Bioorg Chem 2016. [DOI: 10.1134/s106816201603002x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Alagarsamy V, Senthilraja M, Raja Solomon V. Design and Synthesis of 3-Substituted-thiazolyl-2-iminothiazolidin-4-ones as a New Class of Anticonvulsants. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.1845] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- V. Alagarsamy
- Medicinal Chemistry Research Laboratory; MNR College of Pharmacy; Sangareddy, Gr. Hyderabad 502 294 Andhra Pradesh India
| | - M. Senthilraja
- Department of Pharmaceutical Chemistry; J. K. K. Nattraja College of Pharmacy; Komarapalayam 638 183 Tamilnadu India
| | - V. Raja Solomon
- Medicinal Chemistry Research Laboratory; MNR College of Pharmacy; Sangareddy, Gr. Hyderabad 502 294 Andhra Pradesh India
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Gobinath M, Subramanian N, Alagarsamy V, Nivedhitha S, Solomon VR. Synthesis of 1-Substituted-4-(Pyridin-4-yl) [1,2,4] Triazolo [4,3-a] Quinazolin-5(4H)-ones as a New Class of H1- Antihistaminic Agents. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i2.12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Alagarsamy V, Narendhar B, Sulthana MT, Solomon VR. Design and synthesis of 3-(4-chlorophenyl)-2-(2-(4-substituted)-2-oxoethylthio)quinazolin-4(3H)-one as antihistamine agents. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1034-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Alagarsamy V, Parthiban P. Design and Synthesis of Novel 3-(Phenyl)-2-(3-substituted propylthio) Quinazolin-4-(3H)-ones as a New Class of H1-Antihistaminic Agents. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1720] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- V. Alagarsamy
- Medicinal Chemistry Research Laboratory; MNR College of Pharmacy; Sangareddy Gr. Hyderabad 502 294 Andhra Pradesh State India
| | - P. Parthiban
- Medicinal Chemistry Research Laboratory; MNR College of Pharmacy; Sangareddy Gr. Hyderabad 502 294 Andhra Pradesh State India
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Sheorey RV, Thangathiruppathy A, Alagarsamy V. Synthesis, Analgesic and Anti-inflammatory Activities of 3- Ethyl-2-substituted Amino-3H-quinazolin-4-ones. TROP J PHARM RES 2013. [DOI: 10.4314/tjpr.v12i4.21] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Gokulan P, Jayakar B, Alagarsamy V, Raja Solomon V. Synthesis and Pharmacological Investigation of 5-Substituted-3-methylsulfanyl-1H-pyrazole-4-carboxylic Acid Ethyl Esters as New Analgesic and Anti-inflammatory Agents. ACTA ACUST UNITED AC 2012; 62:457-62. [DOI: 10.1055/s-0032-1321830] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- P. Gokulan
- Department of Pharmaceutical Chemistry, Vinayaka Mission's College of Pharmacy, Sankari Main Road, Ariyanoor, Salem, India
| | - B. Jayakar
- Department of Pharmaceutical Chemistry, Vinayaka Mission's College of Pharmacy, Sankari Main Road, Ariyanoor, Salem, India
| | - V. Alagarsamy
- Department of Pharmaceutical Chemistry, MNR College of Pharmacy, Gr. Hyderabad, India
| | - V. Raja Solomon
- Medicinal & Process Chemistry Division, Central Drug Research Institute, Lucknow, India
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Alagarsamy V, Parthiban P. Design and Synthesis of Novel 3-(4-Chlorophenyl)-2-(3-Substituted Propyl Thio) Quinazolin-4-(3H)-ones as a New Class of H1-Antihistaminic Agents. ACTA ACUST UNITED AC 2012; 62:433-8. [DOI: 10.1055/s-0032-1321778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Hyderabad, Andhra Pradesh, India.
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Saravanan G, Alagarsamy V, Prakash CR. Synthesis, analgesic, anti-inflammatory and ulcerogenic properties of some novel N'-((1-(substituted amino)methyl)-2-oxoindolin-3-ylidene)-4-(2-(methyl/phenyl)-4-oxoquinazolin-3(4H)-yl)benzohydrazide derivatives. Drug Discov Ther 2012; 6:78-87. [PMID: 22622017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A new series of N'-((1-(substituted amino)methyl)-2-oxoindolin-3-ylidene)-4-(2-(methyl/phenyl)-4-oxoquinazolin-3(4H)-yl)benzohydrazide derivatives 4a-4l were designed and synthesized from anthranilic acid. All the synthesized compounds were characterized by spectroscopic means and elemental analyses. The tail-flick technique and the carrageenan-induced foot paw edema test were performed for screening analgesic and anti-inflammatory activity, respectively. All of the compounds were also examined for their ulcerogenicity. Some of the compounds showed significant activity. Among the test compounds, 4b exhibited 53% and 69% analgesic activity at a dose of 10 and 20 mg/kg, respectively. It also displayed 47% (10 mg/kg) and 65% (20 mg/kg) anti-inflammatory activity with one-fourth of ulcer index of the reference drugs diclofenac and aspirin.
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Affiliation(s)
- G Saravanan
- Bapatla College of Pharmacy, Jawaharlal Nehru Technological University, Hyderabad, Andhra Pradesh, India.
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Alagarsamy V, Parthiban P. Design and synthesis of novel 2-(3-substituted propyl)-3-(2-methyl phenyl) quinazolin-4-(3H)-ones as a new class of H1-antihistaminic agents. J Enzyme Inhib Med Chem 2011; 28:65-71. [PMID: 22074561 DOI: 10.3109/14756366.2011.631184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A series of novel 2-(3-substituted propyl)-3-(2-methyl phenyl) quinazolin-4-(3H)-ones were synthesized by the reaction of 2-(3-bromopropyl thio)-3-(2-methyl phenyl) quinazolin-4-(3H)-one with various amines. The starting material, 2-(3-bromopropyl thio)-3-(2-methyl phenyl) quinazolin-4-(3H)-one was synthesized from 2-methyl aniline. When tested for their in vivo H(1)-antihistaminic activity on conscious guinea pigs, all the test compounds protected the animals from histamine induced bronchospasm significantly. Compound 2-(3-(4-methylpiperazin-1-yl) propylthio)-3-(2-methyl phenyl) quinazolin-4(3H)-one (OT5) emerged as the most active compound (71.70% protection) of the series when compared to the reference standard chlorpheniramine maleate (70.09% protection). Compound OT5 shows negligible sedation (7%) compared to chlorpheniramine maleate (33%). Therefore, compound OT5 can serve as the leading molecule for further development into a new class of H(1)-antihistaminic agents.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, Gr. Hyderabad, Andhra Pradesh, India.
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Hanish Singh JC, Alagarsamy V, Diwan PV, Sathesh Kumar S, Nisha JC, Narsimha Reddy Y. Neuroprotective effect of Alpinia galanga (L.) fractions on Aβ(25-35) induced amnesia in mice. J Ethnopharmacol 2011; 138:85-91. [PMID: 21911048 DOI: 10.1016/j.jep.2011.08.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 08/12/2011] [Accepted: 08/20/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The rhizomes of Alpinia galanga (L.) Willd (Zingiberaceae), a ginger substitute for flavouring food was traditionally used as nervine tonic and stimulant. AIM OF THE STUDY This investigation is designed to screen cognitive improvement of Alpinia galanga (AG) fractions in Alzheimer's type of amnesia in mice induced by Aβ((25-35)). MATERIALS AND METHODS Alzheimer's disease induced mice treated with fractions (n-hexane, chloroform and ethyl acetate) of AG in 200 and 400mg/kg. Neurotoxicity was induced by intracerebroventricular injection of Aβ((25-35)) on the 14th day of 21 days drug treatment. Open field and water maze were carried to determine habituation memory and hippocampal memory. Na(+)/K(+)-ATPase, acetylcholinesterase (AChE) and antioxidant enzymes (SOD, GPx, catalase and vitamin C) were determined in brain tissue homogenate to estimate the brain biochemical changes and its anti-amnesic potential with intensity of oxidative stress signaling. Further bioactive (chloroform) fraction was eluted through column chromatography to identify the lead molecules. RESULTS Increased habituation memory and decreased escape latency in behavioral parameter are the indicative of the cognitive enhancement after treatment with Alpinia galanga fractions. Increment in Na(+)/K(+)-ATPase and antioxidant activity depicts brain membrane integrity improvement and free radical scavenging property. AChE level was decreased to improve the cognition by enhancing cholinergic transmission. CONCLUSION Anti-amnesic effect was exerted by various fractions of Alpinia galanga. Among all fractions, preeminent neuroprotection was exerted by chloroform fraction, which has compound, 1'δ-1'-acetoxyeugenol acetate and it may be a potential therapeutic agent for Alzheimer's type of amnesia. These results further motivate us to explore the activity of lead compound's anti-amnesic effect on transgenic mice model of AD.
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Affiliation(s)
- J C Hanish Singh
- Department of Pharmacology, Lalitha College of Pharmacy, Ghatkesar, Gr. Hyderabad, Andhra Pradesh 501301, India
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Singh JCH, Alagarsamy V, Parthiban P, Selvakumar P, Reddy YN. Neuroprotective potential of ethanolic extract of Pseudarthria viscida (L) Wight and Arn against beta-amyloid(25-35)-induced amnesia in mice. Indian J Biochem Biophys 2011; 48:197-201. [PMID: 21793312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The neuroprotective potential of ethanolic extract of roots of Pseudarthria viscida (L) Wight and Arn (EEPV) was investigated against beta-amyloid(25-35)-induced amnesia in mice which is a suitable animal model for Alzheimer's disease (AD). The senile plaques of beta-amyloid (Abeta) are major constituents accumulated during the progression of AD as a potent neurotoxicant. In our investigation, intracerebroventricular injection of Abeta(25-35) in mice induced the neurodegeneration, exhibited the increased time of escape latency in behavioral pattern using water maze and decreased the levels of antioxidants namley superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and vitamin C with elevated level of acetylcholinesterase enzyme (AChE). The neuroprotective potential of EEPV was determined by behavioral pattern using water maze and biochemical parameters such as SOD, CAT and GPx and vitamin C content as well as AChE. Mice were treated with EEPV at 200 and 400 mg/kg doses for 21 days. Except control, all animals received a single injection of neurotoxicant Abeta(25-35) on 14th day. In behavioural assessment, treatment with ethanolic extract improved the cognitive function in the water maze and attenuated the elevated levels of AChE with increase in antioxidant enzymes, indicating the neuroprotection with increased levels of vitamin C. These findings suggest that ethanolic extract of P. viscida exerts anti-amnesiac effects and enhances cognitive function.
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Affiliation(s)
- J C Hanish Singh
- Department of Pharmacology, Lalitha College of Pharmacy, Ghatkesar, Gr. Hyderabad 501301, Andhra Pradesh, India
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Hanish Singh JC, Alagarsamy V, Sathesh Kumar S, Narsimha Reddy Y. Neurotransmitter Metabolic Enzymes and Antioxidant Status on Alzheimer's Disease Induced Mice Treated with Alpinia galanga
(L.) Willd. Phytother Res 2011; 25:1061-7. [DOI: 10.1002/ptr.3364] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- J. C. Hanish Singh
- Department of Pharmacology; MNR College of Pharmacy; Sangareddy 502 294 Andhra Pradesh India
| | - V. Alagarsamy
- Department of Pharmacology; MNR College of Pharmacy; Sangareddy 502 294 Andhra Pradesh India
| | - S. Sathesh Kumar
- Department of Pharmaceutics; School of Pharmaceutical Sciences; Vels University; Pallavaram Chennai 600 117 Tamil Nadu India
| | - Y. Narsimha Reddy
- Department of Pharmacology; University College of Pharmaceutical Sciences; Kakatiya University; Warangal 506 009 Andhra Pradesh India
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Alagarsamy V, Giridhar R, Yadav MR. Synthesis and pharmacological investigation of novel 1-substituted-4-(4-substituted phenyl)-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones as a new class of H1-antihistamine agents. J Pharm Pharmacol 2010; 58:1249-55. [PMID: 16945184 DOI: 10.1211/jpp.58.9.0012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
A series of novel 1-substituted-4-(4-substituted phenyl)-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones was synthesized by the cyclization of 2-hydrazino-3-(4-substituted phenyl)-3H-quinazolin-4-one with various one-carbon donors. The starting material, 2-hydrazino-3-(4-substituted phenyl)-3H-quinazolin-4-one, was synthesized from 4-substituted aniline by a novel innovative route. When tested for in-vivo H1-antihistamine activity on conscious guinea-pigs, all the test compounds significantly protected the animals against histamine-induced bronchospasm. The compound 1-methyl-4-(4-chloro phenyl)-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (VII) was more potent (72.71% protection), and 1-methyl-4-(4-methoxy phenyl)-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (II) was equipotent (71% protection), when compared with the reference standard, chlorpheniramine maleate (71% protection). Compounds II and VII showed negligible sedation (5% and 8% respectively) when compared with chlorpheniramine maleate (25%). Compounds II and VII could serve as prototype molecules for further development as a new class of H1-antihistamines.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand Nagar, Krishnan koil-626 190, India.
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Alagarsamy V, Raja Solomon V, Sheorey RV, Jayakumar R. 3-(3-Ethylphenyl)-2-substituted hydrazino-3H-quinazolin-4-one Derivatives: New Class of Analgesic and Anti-Inflammatory Agents. Chem Biol Drug Des 2009; 73:471-9. [DOI: 10.1111/j.1747-0285.2009.00794.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Alagarsamy V, Sharma HK, Parthiban P, Singh JCH, Murugan ST, Solomon VR. 4-(3-Methoxyphenyl)-1-substituted-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones: new class of H1-antihistaminic agents. Pharmazie 2009; 64:5-9. [PMID: 19216223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A series of 1-substituted-4-(3-methoxyphenyl)-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones were synthesized by the cyclization of 2-hydrazino-3-(3-methoxyphenyl)-3H-quinazolin-4-one with various electrophile. The starting material 2-hydrazino-3-(3-methoxyphenyl)-3H-quinazolin-4-one was synthesized from 3-methoxy aniline by an innovative route. Title compounds were tested for their in vivo H1-antihistaminic activity on guinea pigs; all the tested compounds protected the animals from histamine induced bronchospasm significantly. Compound 1-methyl-4-(3-methoxyphenyl)-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (II) emerged as the most active compound of the series and was more potent (72.76%) than the reference standard chlorpheniramine maleate (71%). Compound II showed negligible sedation (10%) when compared to chlorpheniramine maleate (25%). Hence it could serve as prototype molecule for further development as a new class of H1-antihistaminic agents.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, MNR College of Pharmacy, Sangareddy, India.
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Alagarsamy V, Rupeshkumar M, Kavitha K, Meena S, Shankar D, Siddiqui AA, Rajesh R. Synthesis and pharmacological investigation of novel 4-(2-methylphenyl)-1-substituted-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones as new class of H1-antihistaminic agents. Eur J Med Chem 2008; 43:2331-7. [PMID: 18031870 DOI: 10.1016/j.ejmech.2007.10.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2007] [Revised: 09/30/2007] [Accepted: 10/01/2007] [Indexed: 11/28/2022]
Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, Dayananda Sagar College of Pharmacy, Kumaraswamy Layout, Bangalore 560 078, India.
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Alagarsamy V, Raja Solomon V, Murugan M, Dhanabal K, Parthiban P, Anjana G. Design and synthesis of 3-(4-Ethylphenyl)-2-substituted amino-3H-quinazolin-4-ones as a novel class of analgesic and anti-inflammatory agents. J Enzyme Inhib Med Chem 2008; 23:839-47. [DOI: 10.1080/14756360701746229] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- V. Alagarsamy
- Medicinal Chemistry Research Laboratory, Dayananda Sagar College of Pharmacy, Kumaraswamy Layout, Bangalore, 560 078, India
| | - V. Raja Solomon
- Medicinal & Process Chemistry Division, Central Drug Research Institute, Lucknow, 226 001, India
| | - M. Murugan
- Medicinal Chemistry Research Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand NagarKrishnankovil, 626 190, India
| | - K. Dhanabal
- Medicinal Chemistry Research Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand NagarKrishnankovil, 626 190, India
| | - P. Parthiban
- Medicinal Chemistry Research Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand NagarKrishnankovil, 626 190, India
| | - G.V. Anjana
- Medicinal Chemistry Research Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand NagarKrishnankovil, 626 190, India
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Alagarsamy V, Solomon VR, Murugan M, Sankaranarayanan R, Periyasamy P, Deepa R, Anandkumar TD. Synthesis of 3-(2-pyridyl)-2-substituted-quinazolin-4(3H)-ones as new analgesic and anti-inflammatory agents. Biomed Pharmacother 2008; 62:454-61. [PMID: 17175131 DOI: 10.1016/j.biopha.2006.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2006] [Accepted: 10/31/2006] [Indexed: 02/02/2023] Open
Abstract
A new series of 3-(2-pyridyl)-2-substituted-quinazolin-4(3H)-ones were synthesized by reacting the amino group of 2-hydrazino-3-(2-pyridyl)-quinazolin-4(3H)-one with a variety of aldehydes and ketones. The starting material 2-hydrazino-3-(2-pyridyl)-quinazolin-4(3H)-one was synthesized from 2-aminopyridine. The title compounds were investigated for analgesic, anti-inflammatory and ulcerogenic index activities. While the test compounds exhibited significant activity, compound 2-(1-ethylpropylidene)-hydrazino-3-(2-pyridyl)-quinazolin-4(3H)-one (AS2) showed moderate analgesic activity and compound 2-(1-methylbutylidene)-hydrazino-3-(2-pyridyl)-quinazolin-4(3H)-one (AS3) showed realistic anti-inflammatory activity when compared to the reference standard diclofenac sodium. Interestingly the test compounds showed only mild ulcerogenic side effect when compared to aspirin.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry R&D Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand Nagar, Krishnankovil, Tamil Nadu-626 190, India.
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Alagarsamy V, Meena S, Ramseshu K, Raja Solomon V, Thirumurugan K. Synthesis and pharmacological evaluation of 3-(4-chloro phenyl)-2-substituted-3H-quinazolin-4-ones as analgesic and anti-inflammatory agents. Drug Dev Res 2008. [DOI: 10.1002/ddr.20249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Alagarsamy V, Parthiban P, Solomon VR, Dhanabal K, Murugesan S, Saravanan G, Anjana GV. Synthesis and pharmacological investigation of novel 4-(4-Ethyl phenyl)-1-substituted-4H-[1,2,4]triazolo[4,3-a]-quinazolin-5-ones as new class of H1-antihistaminic agents. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450312] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Alagarsamy V, Murugesan S, Sheorey RV. Synthesis and pharmacological investigation of novel 3-(benzyl)-2-substituted amino-3H-quinazolin-4-ones as analgesic and anti-inflammatory agents. Med Chem Res 2008. [DOI: 10.1007/s00044-008-9098-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Alagarsamy V, Meena S, Ramaseshu KV, Solomon VR, Kumar TDA, Thirumurugan K. Synthesis of Novel 3-Butyl-2-Substituted Amino-3H-Quinazolin-4-ones as Analgesic and Anti-inflammatory Agents. Chem Biol Drug Des 2007; 70:254-60. [PMID: 17718720 DOI: 10.1111/j.1747-0285.2007.00548.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A variety of novel 3-butyl-2-substituted amino-3H-quinazolin-4-ones were synthesized by reacting the amino group of 3-butyl-2-hydrazino-3H-quinazolin-4-one with various aldehydes and ketones. The title compounds were investigated for analgesic, anti-inflammatory and ulcerogenic index activities. The compound 3-butyl-2-(1-methylbutylidene-hydrazino)-3H-quinazolin-4-one (AS3) emerged as the most active analgesic agent. Compound 3-butyl-2-(1-ethylpropylidene-hydrazino)-3H-quinazolin-4-one (AS2) emerged as the most active anti-inflammatory agent and is moderately more potent when compared to the reference standard diclofenac sodium. Interestingly, the test compounds showed only mild ulcerogenic potential when compared to aspirin.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, Dayananda Sagar College of Pharmacy, Kumaraswamy Layout, Bangalore 560 078, India.
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Alagarsamy V, Meena S, Ramaseshu KV, Solomon VR, Kumar TDA. 4-Cyclohexyl-1-substituted-4H-[1,2,4]triazolo [4,3-a] quinazolin-5-ones: Novel Class of H1-antihistaminic Agents. Chem Biol Drug Des 2007; 70:158-63. [PMID: 17683377 DOI: 10.1111/j.1747-0285.2007.00544.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of novel 1-substituted-4-cyclohexyl-4H-[1,2,4]triazolo [4,3-a] quinazolin-5-ones were synthesized by the cyclization of 3-cyclohexyl-2-hydrazino-3H-quinazolin-4-one with various one carbon donors. When tested for their in vivo H1-antihistaminic activity on guinea-pigs, all the test compounds protected the animals from histamine induced bronchospasm significantly. The compound 4-cyclohexyl-1-methyl-4H-[1,2,4]triazolo[4,3-a] quinazolin-5-one (II) emerged as the most active compound of the series and it is more potent (72.96% protection) when compared to the reference standard chlorpheniramine maleate (71.00% protection). The compound II shows negligible sedation (9%) when compared to chlorpheniramine maleate (30%). Hence, it could serve as prototype molecule for further development as a new class of H1-antihistamines.
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Alagarsamy V, Solomon VR, Deepa G, Parthiban P, Anjana GV. Synthesis and Pharmacological Investigation of 3-Subsituted-amino-2-methylsulfanyl-5,6,7,8-tetrahydro-3H-benzo[4,5]thieno[2,3-d]pyrimidin-4-ones as Analgesic and Anti-Inflammatory Agents. Arch Pharm (Weinheim) 2007; 340:352-8. [PMID: 17610301 DOI: 10.1002/ardp.200700017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In the present work, design, synthesis, and pharmacological evaluation of the analgesic, anti-inflammatory, and ulcerogenic-index activities of new 3-subsituted-amino-2-methylsulfanyl-5,6,7,8-tetrahydro-3H-benzo[4,5]thieno[2,3-d]pyrimidin-4-ones, structurally planed by exploiting a clear concept of bio-isosterism, are reported. All compounds exhibited significant analgesic and anti-inflammatory activity. Compounds A1, A3 showed higher analgesic activity and more potent anti-inflammatory activity than that of the reference compound diclofenac sodium. Interestingly, the test compounds showed only mild ulcerogenic potential when compared to that of acetylsalicylic acid.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, Dayananda Sagar College of Pharmacy, Kumaraswamy Layout, Bangalore, India.
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Alagarsamy V, Vijayakumar S, Raja Solomon V. Synthesis of 2-mercapto-3-substituted-5,6-dimethylthieno[2,3-d] pyrimidin-4(3H)-ones as new analgesic, anti-inflammatory agents. Biomed Pharmacother 2007; 61:285-91. [PMID: 17391907 DOI: 10.1016/j.biopha.2007.02.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2007] [Accepted: 02/12/2007] [Indexed: 02/02/2023] Open
Abstract
A new series of 2-mercapto-3-substituted-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-ones were synthesised by reacting 3-amino-2-mercapto-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one with different aldehydes and ketones. The starting material 3-amino-2-mercapto-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one was synthesised from 2-amino-3-carbethoxy-4,5-dimethyl thiophene by a novel innovative route. The title compounds were investigated for analgesic, anti-inflammatory and ulcerogenic index activities. While the test compounds exhibited significant activity, among these compound AS1 showed more potent analgesic and anti-inflammatory activities and the compound AS3 showed equipotent analgesic and anti-inflammatory activities when compared to the reference standard diclofenac sodium.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, Dayananda Sagar College of Pharmacy, Bangalore 560 078, India.
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Alagarsamy V, Solomon VR, Murugan M. Synthesis and pharmacological investigation of novel 4-benzyl-1-substituted-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones as new class of H1-antihistaminic agents. Bioorg Med Chem 2007; 15:4009-15. [PMID: 17452107 DOI: 10.1016/j.bmc.2007.04.001] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2007] [Revised: 03/31/2007] [Accepted: 04/03/2007] [Indexed: 11/21/2022]
Abstract
A series of novel 1-substituted-4-benzyl-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-ones were synthesized by the cyclization of 2-hydrazino-3-benzyl-3H-quinazolin-4-one with various one-carbon donors. The starting material 2-hydrazino-3-benzyl-3H-quinazolin-4-one was synthesized from benzylamine by a new innovative route. When tested for their in vivo H1 -antihistaminic activity on guinea pigs, all the test compounds protected the animals from histamine induced bronchospasm significantly. The compound 1-methyl-4-benzyl-4H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (II) emerged as the most active compound of the series and it is more potent (percent protection 76%) when compared to the reference standard chlorpheniramine maleate (percent protection 71%). Compound II showed negligible sedation (7%) when compared to chlorpheniramine maleate (30%). Hence it could serve as prototype molecule for further development as a new class of H1 -antihistamines.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, Dayananda Sagar College of Pharmacy, Kumaraswamy Layout, Bangalore 560 078, India.
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Alagarsamy V, Solomon VR, Meena R, Ramaseshu KV, Thirumurugan K, Murugesan S. Design and synthesis of 2-methylthio-3-substituted-5,6-dimethylthieno [2,3-d] pyrimidin-4(3H)-ones as analgesic, anti-inflammatory and antibacterial agents. Med Chem 2007; 3:67-73. [PMID: 17266626 DOI: 10.2174/157340607779317599] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pain and inflammation are simultaneous responses in bacterial infections. In current clinical practice, two groups of agents like antibacterial and non-steroidal anti-inflammatory drugs (NSAID's) are prescribed simultaneously. Regrettably, none of the drug possesses these activities in a single component. Exploiting the bioisosterism concept, we have documented that 2-phenyl-3-substituted quinazolines, 2,3-disubstituted quinazolines, 2-methyl-3-substituted quinazolin-4-(3H)-ones and 2-methylthio-3-substituted quinazolin-4-(3H)-ones exhibited good analgesic and anti-inflammatory activities. The present work is an extension of our ongoing efforts towards the development and identification of lead molecules by bioisostere concept, for which we designed some of 2-methylthio-3-substituted-5,6-dimethylthieno[2,3-d] pyrimidin-4(3H)-ones. The title compounds were investigated for analgesic, anti-inflammatory and antibacterial activities. While the test compounds exhibited significant activity, the compounds (6-9) showed more potent analgesic activity, and the compounds (8, 9) showed anti-inflammatory activity comparable to the reference standard diclofenac.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry Research Laboratory, Arulmigu Kalasalingam College of Pharmacy, Krishnan kovil-626 190, India.
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Alagarsamy V, Meena S, Ramseshu KV, Solomon VR, Thirumurugan K, Dhanabal K, Murugan M. Synthesis, Analgesic, Antiinflammatory, Ulcerogenic Index and Antibacterial Activities of Novel 2-Methylthio-3-substituted-5,6,7,8-tetrahydrobenzo(b)thieno [2,3-d]pyrimidin-4(3H)-ones. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/chin.200711131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Alagarsamy V, Murugesan S, Dhanabal K, Murugan M, De Clercq E. AntiHIV, antibacterial and antifungal activities of some novel 2-methyl-3-(substituted methylamino)-(3H)-quinazolin-4-ones. Indian J Pharm Sci 2007. [DOI: 10.4103/0250-474x.33167] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Alagarsamy V, Shankar D, Meena S, Thirumurugan K, Ananda Kumar TD. Synthesis, analgesic, anti-inflammatory and ulcerogenic index activities of novel 2-methylthio-3-substituted-5,6-dimethyl thieno [2,3-d] pyrimidin-4(3H)-ones. Drug Dev Res 2007. [DOI: 10.1002/ddr.20171] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Alagarsamy V, Raja Solomon V, Dhanabal K. Synthesis and pharmacological evaluation of some 3-phenyl-2-substituted-3H-quinazolin-4-one as analgesic, anti-inflammatory agents. Bioorg Med Chem 2006; 15:235-41. [PMID: 17079148 DOI: 10.1016/j.bmc.2006.09.065] [Citation(s) in RCA: 181] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2006] [Revised: 09/25/2006] [Accepted: 09/28/2006] [Indexed: 10/24/2022]
Abstract
A variety of novel 3-phenyl-2-substituted-3H-quinazolin-4-ones were synthesized by reacting the amino group of 2-hydrazino-3-phenyl-3H-quinazolin-4-one with different aldehydes and ketones. The starting material 2-hydrazino-3-phenyl-3H-quinazolin-4-one was synthesized from aniline. The title compounds were investigated for analgesic, anti-inflammatory and ulcerogenic index activities. While the test compounds exhibited significant activity, compounds, 2-(N'-2-butylidene-hydrazino)-3-phenyl-3H-quinazolin-4-one (AS1), 2-(N'-3-pentylidene-hydrazino)-3-phenyl-3H-quinazolin-4-one (AS2) and 2-(N'-2-pentylidene-hydrazino)-3-phenyl-3H-quinazolin-4-one (AS3), exhibited moderate analgesic activity. The compound 2-(N'-2-pentylidene-hydrazino)-3-phenyl-3H-quinazolin-4-one (AS3) showed more potent anti-inflammatory activity when compared to the reference standard diclofenac sodium. Interestingly, the test compounds showed only mild ulcerogenic side effect when compared to aspirin.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry R&D Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand Nagar, Krishnankovil-626 190, India.
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Alagarsamy V, Meena S, Ramseshu KV, Solomon VR, Thirumurugan K, Dhanabal K, Murugan M. Synthesis, analgesic, anti-inflammatory, ulcerogenic index and antibacterial activities of novel 2-methylthio-3-substituted-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-4(3H)-ones. Eur J Med Chem 2006; 41:1293-300. [PMID: 16928409 DOI: 10.1016/j.ejmech.2006.06.005] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2005] [Revised: 06/12/2006] [Accepted: 06/14/2006] [Indexed: 11/20/2022]
Abstract
A variety of novel 2-methylthio-3-substituted-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-4(3H)-ones have been synthesized by reacting (2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-3-yl)dithiocarbamic acid methyl ester (5) with a variety of amines. The starting material dithiocarbamate (5) was synthesized from 2-amino-3-carbethoxy-4,5,6,7-tetrahydrobenzo (b) thiophene (1) by a novel innovative route. The title compounds were investigated for analgesic, anti-inflammatory, ulcerogenicity index and antibacterial activities. While the test compounds exhibited significant activity, the compounds 1-methyl-3-(2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-3-yl)thiourea (A1), 1-dimethyl-3-(2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-3-yl)thiourea (A2), 1-diethyl-3-(2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-3-yl)thiourea (A3) and 1-pyrrolidinyl-3-(2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-3-yl)thiourea (A4) showed more potent analgesic activity and the compounds 1-dimethyl-3-(2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d]pyrimidin-3-yl)thiourea (A2), 1-diethyl-3-(2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno-[2,3-d]pyrimidin-3-yl)thiourea (A3) and 1-pyrrolidinyl-3-(2-methylthio-4-oxo-3H-5,6,7,8-tetrahydrobenzo (b) thieno[2,3-d] pyrimidin-3-yl)thiourea (A4) showed more potent anti-inflammatory activity than the reference standard diclofenac sodium.
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Affiliation(s)
- V Alagarsamy
- Medicinal Chemistry R&D Laboratory, Arulmigu Kalasalingam College of Pharmacy, Anand Nagar, Krishnankovil, India.
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Siddiqui AA, Wani SM, Rajesh R, Alagarsamy V. Phytochemical and pharmacological investigation ofHibiscus rosasinensislinn. Indian J Pharm Sci 2006. [DOI: 10.4103/0250-474x.29625] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Siddiqui AA, Wani SM, Rajesh R, Alagarsamy V. Phytochemical and pharmacological investigation of flowers of hibiscus rosasinensis linn. Indian J Pharm Sci 2006. [DOI: 10.4103/0250-474x.22986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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