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Maji S, Debnath B, Panda S, Manna T, Maity A, Dayaramani R, Nath R, Khan SA, Akhtar MJ. Anticancer Potential of the S-Heterocyclic Ring Containing Drugs and its Bioactivation to Reactive Metabolites. Chem Biodivers 2024:e202400473. [PMID: 38723201 DOI: 10.1002/cbdv.202400473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 05/08/2024] [Indexed: 06/20/2024]
Abstract
Sulfur-containing heterocyclic derivatives have been disclosed for binding with a wide range of cancer-specific protein targets. Various interesting derivatives of sulfur-containing heterocyclics such as benzothiazole, thiazole, thiophene, thiazolidinedione, benzothiophene, and phenothiazine, etc have been shown to inhibit diverse signaling pathways implicated in cancer. Significant progress has also been made in molecular targeted therapy against specific enzymes such as kinase receptors due to potential binding interactions inside the ATP pocket. Sulfur-containing heterocyclic ring metal complexes i. e., benzothiazole, thiazole, thiophene, benzothiophene and phenothiazines are among the most promising active anticancer compounds. However, sulfur heteroaromatic rings, particularly thiophene, are of high structural alert due to their metabolism to reactive metabolites. The mere presence of a structural alert itself does not determine compound toxicity therefore, this review focuses on some specific findings that shed light on factors influencing the toxicity. In the current review, synthetic strategies of introducing the sulfur core ring in the synthesized derivatives are discussed with their structure-activity relationships to enhance our understanding of toxicity mechanisms and develop safer therapeutic options. The sulfur-containing marketed anticancer drugs included in this review direct the synthesis of novel compounds and will help in the development of potent, safer sulfur-based anticancer drugs in near future.
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Affiliation(s)
- Sumit Maji
- Department of Pharmacy, Bharat Technology, Uluberia-711316, Howrah, West Bengal, India
| | - Biplab Debnath
- Department of Pharmacy, Bharat Technology, Uluberia-711316, Howrah, West Bengal, India
| | - Shambo Panda
- Department of Pharmacy, Bharat Technology, Uluberia-711316, Howrah, West Bengal, India
| | - Tanusree Manna
- Department of Pharmacy, Bharat Technology, Uluberia-711316, Howrah, West Bengal, India
| | - Arindam Maity
- JIS University, Agarpara Campus, Kolkata-81, Nilgunj Road, Agarpara, Kolkata-700109, India
| | - Richa Dayaramani
- Silver Oak Institute of Pharmacy and Research, Silver Oak University, Ahmedabad, India
| | - Rajarshi Nath
- Department of Pharmacy, Bharat Technology, Uluberia-711316, Howrah, West Bengal, India
- JIS University, Agarpara Campus, Kolkata-81, Nilgunj Road, Agarpara, Kolkata-700109, India
| | - Shah Alam Khan
- Department of Pharmaceutical Chemistry, National University of Science and Technology, PO 620, PC 130, Azaiba, Bousher, Muscat, Sultanate of Oman
| | - Md Jawaid Akhtar
- Department of Pharmaceutical Chemistry, National University of Science and Technology, PO 620, PC 130, Azaiba, Bousher, Muscat, Sultanate of Oman
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Worzakowska M, Sztanke M, Rzymowska J, Sztanke K. Thermal Decomposition Path-Studied by the Simultaneous Thermogravimetry Coupled with Fourier Transform Infrared Spectroscopy and Quadrupole Mass Spectrometry-Of Imidazoline/Dimethyl Succinate Hybrids and Their Biological Characterization. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4638. [PMID: 37444951 DOI: 10.3390/ma16134638] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023]
Abstract
The thermal decomposition path of synthetically and pharmacologically useful hybrid materials was analyzed in inert and oxidizing conditions for the first time and presented in this article. All the imidazoline/dimethyl succinate hybrids (1-5) were studied using the simultaneous thermogravimetry (TG) coupled with Fourier transform infrared spectroscopy (FTIR) and quadrupole mass spectrometry (QMS). It was found that the tested compounds were thermally stable up to 200-208 °C (inert conditions) and up to 191-197 °C (oxidizing conditions). In both furnace atmospheres, their decomposition paths were multi-step processes. At least two major stages (inert conditions) and three major stages (oxidizing conditions) of their decomposition were observed. The first decomposition stage occurred between T5% and 230-237 °C. It was connected with the breaking of one ester bond. This led to the emission of one methanol molecule and the formation of radicals capable of further radical reactions in both used atmospheres. At the second decomposition stage (Tmax2) between 230-237 °C and 370 °C (inert conditions), or at about 360 °C (oxidizing conditions), the cleavage of the second ester bond and N-N and C-C bonds led to the emission of CH3OH, HCN, N2, and CO2 and other radical fragments that reacted with each other to form clusters and large clusters. Heating the tested compounds to a temperature of about 490 °C resulted in the emission of NH3, HCN, HNCO, aromatic amines, carbonyl fragments, and the residue (Tmax2a) in both atmospheres. In oxidizing conditions, the oxidation of the formed residues (Tmax3) was related to the production of CO2, CO, and H2O. These studies confirmed the same radical decomposition mechanism of the tested compounds both in inert and oxidizing conditions. The antitumor activities and toxicities to normal cells of the imidazoline/dimethyl succinate hybrids were also evaluated. As a result, the two hybrid materials (3 and 5) proved to be the most selective in biological studies, and therefore, they should be utilized in further, more extended in vivo investigations.
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Affiliation(s)
- Marta Worzakowska
- Department of Polymer Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, 33 Gliniana Street, 20-614 Lublin, Poland
| | - Małgorzata Sztanke
- Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
| | - Jolanta Rzymowska
- Department of Biology and Genetics, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
| | - Krzysztof Sztanke
- Laboratory of Bioorganic Compounds Synthesis and Analysis, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
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Mishra R, Kumar N, Mishra I, Sachan N. A Review on Anticancer Activities of Thiophene and Its Analogs. Mini Rev Med Chem 2021; 20:1944-1965. [PMID: 32669077 DOI: 10.2174/1389557520666200715104555] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/05/2020] [Accepted: 04/16/2020] [Indexed: 12/24/2022]
Abstract
Cancer is the world's second-largest cause of mortality and one of the biggest global health concerns. The prevalence and mortality rates of cancer remain high despite significant progress in cancer therapy. The search for more effective, as well as less toxic treatment methods for cancer, is at the focus of current studies. Thiophene and its derivatives have surged as an influential scaffold, which, because of their appreciable diversity in biological activities, has drawn the concerned interest of the researchers in the field of medicinal chemistry. By the affluent introduction of its derivatives, which have antioxidant, anti-inflammatory, antimicrobial, and anticancer activities, the adaptability of the thiophene moiety has been displayed. The nature and positioning of the substitutions significantly impacted thiophene moiety activity. This decent array in the living response account about this moiety has picked plentiful researcher's consideration to inquire about it to its peculiar potential across certain activities. In the field of cancer therapy against different cancer cells, the structure-activity relationship for each of the derivatives showed an excellent understanding of thiophene moiety. Information from the various articles revealed the key role of thiophene moiety and its derivatives to develop the vital lead compound. The essential anticancer mechanisms identified include inhibition of the topoisomerase, inhibition of tyrosine kinase, tubulin interaction and apoptosis induction through the activation of reactive oxygen species. This review is an endeavor to promote the anticancer potential of the derivatives, whether having thiophene or condensed thiophene as a core moiety or as a substituent that can lead in the future to synthesize varieties of chemotherapeutic entities in the field of cancer treatment.
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Affiliation(s)
- Raghav Mishra
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, 281406, India
| | - Nitin Kumar
- School of Medical and Allied Sciences, K.R. Mangalam University, Gurgaon, Haryana, 122103, India
| | - Isha Mishra
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, 281406, India
| | - Neetu Sachan
- School of Pharmaceutical Sciences, IFTM University, Moradabad, Uttar Pradesh, 244102, India
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Abdel-Rahman SA, Wafa EI, Ebeid K, Geary SM, Naguib YW, El-Damasy AK, Salem AK. Thiophene derivative-loaded nanoparticles mediate anticancer activity through the inhibition of kinases and microtubule assembly. ADVANCED THERAPEUTICS 2021; 4. [PMID: 34423112 DOI: 10.1002/adtp.202100058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Different tetrahydrobenzo[b]thiophene derivatives were explored as new tubulin polymerization destabilizers to arrest tumor cell mitosis. A series of compounds incorporating the tetrahydrobenzo[b]thiophene scaffold were synthesized, and their biological activities were investigated. The cytotoxicity of each of the synthesized compounds was assessed against a range of cell lines. Specifically, the benzyl urea tetrahydrobenzo[b]thiophene derivative, 1-benzyl-3-(3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)urea (BU17), was identified as the most potent compound with broad-spectrum antitumor activity against several cancer cell lines. The potential mechanism(s) of action were investigated where dose-dependent G2/M accumulation and A549 cell cycle arrest were detected. Additionally, A549 cells treated with BU17 expressed enhanced levels of caspase 3 and 9, indicating the induction of apoptosis. Furthermore, it was found that BU17 inhibits WEE1 kinase and targets tubulin by blocking its polymerization. BU17 was also formulated into PLGA nanoparticles, and it was demonstrated that BU17-loaded nanoparticles could significantly enhance antitumor activity compared to the soluble counterpart.
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Affiliation(s)
- Somaya A Abdel-Rahman
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA.,Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Emad I Wafa
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA
| | - Kareem Ebeid
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA.,Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.,Department of Pharmaceutics, Faculty of Pharmacy, Deraya University, New Minia City, Minia, 61519 Egypt
| | - Sean M Geary
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA
| | - Youssef W Naguib
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA.,Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.,Department of Pharmaceutics, Faculty of Pharmacy, Deraya University, New Minia City, Minia, 61519 Egypt
| | - Ashraf K El-Damasy
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Aliasger K Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA 52242, USA.,Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52242, USA
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Recent advance on PTP1B inhibitors and their biomedical applications. Eur J Med Chem 2020; 199:112376. [DOI: 10.1016/j.ejmech.2020.112376] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 04/22/2020] [Accepted: 04/22/2020] [Indexed: 12/17/2022]
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Archna, Pathania S, Chawla PA. Thiophene-based derivatives as anticancer agents: An overview on decade's work. Bioorg Chem 2020; 101:104026. [PMID: 32599369 DOI: 10.1016/j.bioorg.2020.104026] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/10/2020] [Accepted: 06/13/2020] [Indexed: 12/30/2022]
Abstract
Heterocyclic compounds hold a pivotal place in medicinal chemistry due to their wide range of biological activities and thus, are exhaustively explored in the field of drug design and development. Continuous efforts are being carried out for the development of medicinal agents especially, for dreadful diseases like cancer. Thiophene, a sulfur containing heterocyclic scaffold, has emerged as one of the relatively well-explored scaffold for the development of library of molecules having potential anticancer profile. Thiophene analogs have been reported to bind with a wide range of cancer-specific protein targets, depending on the nature and position of substitutions. Accordingly, thiophene analogs have been reported to cause their biological action through inhibition of different signaling pathways involved in cancer. Functionally, different anticancer targets require different structural features, so researchers have tried to synthesize new thiophene derivatives with varied substitutions. In the present review, authors have presented the information available on thiophene-based molecules as anticancer agents with special focus on synthetic methodologies, biological profile and structure activity relationship (SAR) studies. Various patents granted for thiophene containing molecules as anticancer have also been included.
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Affiliation(s)
- Archna
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Moga 142001, Punjab, India
| | - Shelly Pathania
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Moga 142001, Punjab, India
| | - Pooja A Chawla
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Moga 142001, Punjab, India.
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Sztanke M, Rzymowska J, Janicka M, Sztanke K. Two novel classes of fused azaisocytosine-containing congeners as promising drug candidates: Design, synthesis as well as in vitro, ex vivo and in silico studies. Bioorg Chem 2019; 95:103480. [PMID: 31864156 DOI: 10.1016/j.bioorg.2019.103480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 11/23/2019] [Accepted: 11/25/2019] [Indexed: 12/28/2022]
Abstract
Searching for new less toxic anticancer drug candidates is a big challenge from a medical point of view. The present investigation was aimed at describing two independent synthetic approaches based on isosteric replacements, spectroscopic characteristics, in vitro anticancer and ex vivo antihaemolytic activities of novel molecules (9-22) and correlations between their standardised lipophilicity indices, computed log Paverage values and pharmacokinetic descriptors. Two novel protocols for annelation of the triazinone template on hydrazinylideneimidazolidines (1-8) (showing a high reactivity towards electrophilic reagents, such as ethyl trifluoropyruvate and ethyl 3-methyl-2-oxobutyrate) were developed for the first time, giving rise to two original classes of highly conjugated azaisocytosine-containing molecules (9-16 and 17-22). Both syntheses proceeded under basic conditions to yield the most probable intermediates (e.g. hemiaminals and imines), which in refluxing two-component solvent mixtures or a suitable solvent cyclised through closing the triazinone ring on functionalised imidazolidines in both cases. All fused azaisocytosine-containing congeners were investigated with the purpose of preselecting possible drug candidates with a better selectivity that could be suitable for further more detailed drug development studies. The majority of test molecules revealed strong antiproliferative effects in most tumour cell cultures and they were more cytotoxic against tumour cells than anticancer drug - pemetrexed. These cytotoxicities may be associated with the activation of initiator and executioner caspases (confirmed for compound 12) which are inducers of apoptosis. Simultaneously, three bioisosteres bearing the trifluoromethyl moiety at the C-3 and the ortho substitution at the phenyl ring (10, 12 and 13) proved to be the most promising in terms of selectivity as they were less or equally toxic to normal cells as pemetrexed. It was shown that isosteric replacement of the ethyl group in antitumour active congeners by the trifluoromethyl or isopropyl group was favourable for the selectivity of the designed drug-like molecules. Almost all new compounds revealed the protective effects in an ex vivo model of oxidatively stressed rat erythrocytes (better or comparable than that of ascorbic acid/Trolox), proving that they are safe to red blood cells. The statistically significant and predictive QSAR equations were derived that describe relationships between some pharmacokinetic descriptors (such as log Ka, HSA, fu, brain, Caco-2, log Kp) and lipophilicity parameters of test molecules. Among all molecules with anticancer profile, the possible drug candidates seem to be 10, 12, 13, 19 and 21 which are the least toxic for normal cells, deprived of haemolytic effects on oxidatively-stressed red blood cells and have the optimum pharmacokinetic descriptors in terms of their lipophilicity parameters. Because of a high development potential they should be utilised in further more extended in vivo investigations aimed at developing novel less toxic anticancer agents.
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Affiliation(s)
- Małgorzata Sztanke
- Department of Medical Chemistry, Medical University, 4A Chodźki Street, 20-093 Lublin, Poland.
| | - Jolanta Rzymowska
- Department of Biology and Genetics, Medical University, 4A Chodźki Street, 20-093 Lublin, Poland
| | - Małgorzata Janicka
- Department of Physical Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland
| | - Krzysztof Sztanke
- Laboratory of Bioorganic Synthesis and Analysis, Chair and Department of Medical Chemistry, Medical University, 4A Chodźki Street, 20-093 Lublin, Poland
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Sztanke M, Rzymowska J, Janicka M, Sztanke K. Synthesis, structure confirmation, identification of in vitro antiproliferative activities and correlation of determined lipophilicity parameters with in silico bioactivity descriptors of two novel classes of fused azaisocytosine-like congeners. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.12.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Sztanke M, Rzymowska J, Janicka M, Sztanke K. Synthesis, structure elucidation, determination of antiproliferative activities, lipophilicity indices and pharmacokinetic properties of novel fused azaisocytosine-like congeners. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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10
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Sztanke M, Kandefer-Szerszeń M, Sztanke K. Biologically and chemically important hydrazino-containing imidazolines as antioxidant agents. Free Radic Res 2018; 52:685-697. [PMID: 29642746 DOI: 10.1080/10715762.2018.1464655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Biologically and chemically useful hydrazinoimidazolines were evaluated as antioxidant and antihaemolytic agents. 1,1-Diphenyl-2-picrylhydrazyl radical (DPPH•), galvinoxyl radical (GOR), nitric oxide (NO) and hydrogen peroxide (H2O2) scavenging assays, ferric ions reducing power assay, and ex vivo model of rat erythrocytes exposed to 2,2'-azobis(2-methylpropionamidine)dihydrochloride (AAPH) or H2O2 were used. The most potent DPPH• scavengers proved to be hydrazinoimidazolines 3, 2, and 4, revealing excellent antiradical effects - superior or comparable to that of all antioxidant standards used. Moreover, these molecules showed strong NO neutralising potencies - better to that of ascorbic acid (AA) (3), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox) (3 and 2), butylated hydroxytoluene (BHT) (3 and 2), and butylated hydroxyanisole (BHA) (3, 2, and 4). Compound 4 was also effective in GOR scavenging. The excellent scavenger of GOR, NO, and H2O2 proved to be structure 5, with the potency superior or comparable to the majority of antioxidant standards used. In turn, compound 9 was effective in H2O2 and GOR neutralisation. All hydrazinoimidazolines revealed the reducing power that is higher than BHT. Moreover, the protective effects of most test compounds on oxidatively stressed erythrocytes were observed. Some structure-activity relationships were disclosed. A significance of the primary hydrazino group on antioxidant effects was confirmed. The most likely DPPH• and GOR scavenging mechanisms for test compounds were propound. Among all the investigated molecules, hydrazinoimidazolines 5, 3, 2, 4, and 9, due to their excellent or good antiradical activities, can represent promising antioxidant candidates with prospective utility for prevention of diseases related to reactive oxygen/nitrogen species.
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Affiliation(s)
- Małgorzata Sztanke
- a Chair and Department of Medical Chemistry , Medical University , Lublin , Poland
| | | | - Krzysztof Sztanke
- c Laboratory of Bioorganic Synthesis and Analysis, Department of Medical Chemistry , Medical University , Lublin , Poland
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Abstract
AIM The similarity in the biological function of the bioisosteric pair, carboxyl and sulfonamide functional groups, is studied using the quantitative tool, average electron density of the bioisosteric moiety in drug molecules and the qualitative tool, electrostatic potential. Results/methodology: Five different capping groups (methyl, phenyl, chlorine, hydrogen and amine) were considered to investigate the effect of the environment on the properties of the bioisosteres. The molecules were considered in their neutral and anionic forms to account for the change in pH depending on the medium of the drug-receptor interactions. CONCLUSION The new developed approach, average electron density, is not only advantageous as a qualitative descriptor, it is also more consistent compared with the conventionally accepted method, electrostatic potential, especially for the anions.
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Gulipalli KC, Bodige S, Ravula P, Endoori S, Vanaja GR, Suresh Babu G, Narendra Sharath Chandra JN, Seelam N. Design, synthesis, in silico and in vitro evaluation of thiophene derivatives: A potent tyrosine phosphatase 1B inhibitor and anticancer activity. Bioorg Med Chem Lett 2017; 27:3558-3564. [PMID: 28579122 DOI: 10.1016/j.bmcl.2017.05.047] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 05/06/2017] [Accepted: 05/16/2017] [Indexed: 11/24/2022]
Abstract
A series of novel methyl 4-(4-amidoaryl)-3-methoxythiophene-2-carboxylate derivatives were designed against the active site of protein tyrosine phosphatise 1B (PTP1B) enzyme using MOE.2008.10. These molecules are also subjected for in silico toxicity prediction studies and considering their corresponding drug scores, it implied that, the molecules are promising as anticancer agents. The designed compounds were synthesized by using suitable methods and characterized. They were subjected to inhibitory activity against PTP1B and in vitro anticancer activity by MTT assay. Most of the tested compounds showed potent inhibitory activity against PTP1B, among the compounds tested, compound 5b exhibited the highest activity (IC50=5.25µM) and remarkable cytotoxic activity at 0.09µM of IC50 against the MCF-7 cell line. In addition to this, compound 5c also showed potential anticancer activity at 2.22µM of IC50 against MCF-7 and 0.72µM against HepG2 cell lines as well as PTP1B inhibitory activity at IC50 of 6.37µM.
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Affiliation(s)
- Kali Charan Gulipalli
- Department of Chemistry, K L University, Green Fields, Vaddeswaram, Guntur 522502, India
| | - Srinu Bodige
- Department of Chemistry, K L University, Green Fields, Vaddeswaram, Guntur 522502, India
| | - Parameshwar Ravula
- Department of Pharmaceutical Chemistry, Gurunanak Institutions Technical Campus, School of Pharmacy, Hyderabad, India
| | - Srinivas Endoori
- Department of Chemistry, K L University, Green Fields, Vaddeswaram, Guntur 522502, India
| | - G R Vanaja
- Department of Animal Biology, University of Hyderabad, Hyderabad 500046, India
| | - G Suresh Babu
- Department of Animal Biology, University of Hyderabad, Hyderabad 500046, India
| | | | - Nareshvarma Seelam
- Department of Chemistry, K L University, Green Fields, Vaddeswaram, Guntur 522502, India.
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In vitro effects of a new fused azaisocytosine-like congener on relative cell proliferation, necrosis and cell cycle in cancer and normal cell cultures. Mol Cell Biochem 2016; 418:179-88. [DOI: 10.1007/s11010-016-2744-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 06/15/2016] [Indexed: 01/31/2023]
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14
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Electrostatic potentials and average electron densities of bioisosteres in methylsquarate and acetic acid. Future Med Chem 2016; 8:361-71. [DOI: 10.4155/fmc.16.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: The bioisosterism in −CO2H and −C4HO3 is exploited using the quantum theory of atoms in molecules and molecular electrostatic potentials (ESP). Results & discussion: Bioisosteres in methylsquarate and acetic acid, in the neutral/anionic forms, have average electron densities that differ by less than 2% (i.e., ∼0.01 atomic units) while irrespective of the capping group. The topography of the ESP reveals similarities in the case of the neutral species but not in the anionic forms. Conclusion: The nonclassical bioisosteres in methylsquarate and acetic acid have average electron densities that are similar and relatively insensitive to the ionization state (neutral or anionic) or its studied capping group (H, CH3, Cl or phenyl). The ESP reveals similarities in the topography of neutral molecules.
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