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Mawale K, Nandini B, Giridhar P. Copper and Silver Nanoparticle Seed Priming and Foliar Spray Modulate Plant Growth and Thrips Infestation in Capsicum spp. ACS Omega 2024; 9:3430-3444. [PMID: 38284086 PMCID: PMC10809252 DOI: 10.1021/acsomega.3c06961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/19/2023] [Accepted: 12/22/2023] [Indexed: 01/30/2024]
Abstract
Nanoparticles (NPs) have the potential to improve plant health and secondary metabolite production. In the present study, three different NPs, i.e., Ag, Cu, and Cu-Ag NPs were produced in the range from 25 to 86 nm, with zeta potentials ranging from -28.8 to -38.5 mV. The synthesized NPs were used for seed priming and foliar spray on three varieties of Capsicum annuum. L, i.e., Arka Sweta (AS), Arka Meghana (AM), and Arka Harita (AH) plants grown under greenhouse conditions. Seed priming at various concentrations of NPs (1, 10, 20 ppm) enhanced the seed germination (96%), seedling vigor index (2494-3112.66), seedling length (6-49%), and biomass (46%) of 45 days old Arka Meghana seedlings. Additionally, all plant tissues accumulated significantly higher amounts of chlorophyll (51-142%), carotenoids (23-94.2%), total phenolic content (73%), and total flavonoid content (57%), compared with the control (p ≤ 0.05). The foliar spray of NPs (20-100 ppm) has a protective effect on the chili plants against thrips infestation (30-76%). The foliar spray enhanced chlorophyll (15-62%), carotenoids (15-50%), total phenolic content (20-62%), total flavonoid content (64-99%), reducing sugars (15-97%), total antioxidant activity (15-142%), ferric reducing antioxidant power assay (15-109%), DPPH (129-54 mg mL-1), and capsaicinoids (capsaicin and dihydrocapsaicin) (82-128%). This study illustrates that Ag, Cu, and Cu-Ag NPs suppress thrips infestation and proliferation with enhanced plant growth and biochemical activity, which is inversely proportional to the NP size. Chemical NPs play a crucial role in the economic significance of chili plants, offering a promising avenue for developing pesticides to effectively combat thrips infestation. This advancement holds great potential in enhancing the overall agronomic productivity of the chili crops.
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Affiliation(s)
- Kiran
Suresh Mawale
- Plant
Cell Biotechnology Department, CSIR-Central
Food Technological Research Institute, Mysuru 570020, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - B. Nandini
- Plant
Cell Biotechnology Department, CSIR-Central
Food Technological Research Institute, Mysuru 570020, India
| | - Parvatam Giridhar
- Plant
Cell Biotechnology Department, CSIR-Central
Food Technological Research Institute, Mysuru 570020, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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2
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Sonowal K, Kalita SJ, Purkayastha SK, Goswami J, Basyach P, Das R, Borborah A, Guha AK, Saikia L. Highly Luminescent Eu 3+-Incorporated Zr-MOFs as Fluorescence Sensors for Detection of Hazardous Organic Compounds in Water and Fruit Samples. ACS Omega 2024; 9:2504-2518. [PMID: 38250388 PMCID: PMC10795037 DOI: 10.1021/acsomega.3c07158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/01/2023] [Accepted: 11/07/2023] [Indexed: 01/23/2024]
Abstract
Considering the risk of toxic organic compounds to both human health and the environment, highly luminescent Eu3+-incorporated amino-functionalized zirconium metal-organic frameworks, namely, Eu/MOF and Eu@MOF were synthesized via the solvothermal method. The synthesized luminescent europium-incorporated MOFs act as outstanding sensor materials for diphenylamine and dinitrobenzene detection in water and fruit samples. The synergistic effect of Eu3+ metal ions and amino-functionalized MOFs enhances the luminescent properties of the MOFs improving the fluorescence sensing ability toward the analytes. The enhancement in the detection capacity of the Eu3+-incorporated sensors than the sole MOF toward toxic organic compounds was confirmed using the Stern-Volmer equation of limit of detection (LOD) measurements along with fluorescence lifetime measurements. The sensors exhibited turn-on fluorometric detection toward their respective analytes due to the inner filter effect. The plausible fluorescence sensing mechanism has been studied. The DFT calculations have been integrated to study the structure, stability, and charge transfer processes.
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Affiliation(s)
- Karanika Sonowal
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam 785006, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sanmilan Jyoti Kalita
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam 785006, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | | | - Juri Goswami
- Jorhat
Institute of Science and Technology, Jorhat, Assam 785010, India
| | - Purashri Basyach
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam 785006, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Riya Das
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam 785006, India
| | - Abhishek Borborah
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam 785006, India
| | - Ankur K. Guha
- Advanced
Computational Chemistry Centre, Cotton University, Panbazar, Guwahati, Assam 781001, India
| | - Lakshi Saikia
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam 785006, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Chatterjee R, Chowdhury AR, Mukherjee D, Chakravortty D. From Eberthella typhi to Salmonella Typhi: The Fascinating Journey of the Virulence and Pathogenicity of Salmonella Typhi. ACS Omega 2023; 8:25674-25697. [PMID: 37521659 PMCID: PMC10373206 DOI: 10.1021/acsomega.3c02386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 06/30/2023] [Indexed: 08/01/2023]
Abstract
Salmonella Typhi (S. Typhi), the invasive typhoidal serovar of Salmonella enterica that causes typhoid fever in humans, is a severe threat to global health. It is one of the major causes of high morbidity and mortality in developing countries. According to recent WHO estimates, approximately 11-21 million typhoid fever illnesses occur annually worldwide, accounting for 0.12-0.16 million deaths. Salmonella infection can spread to healthy individuals by the consumption of contaminated food and water. Typhoid fever in humans sometimes is accompanied by several other critical extraintestinal complications related to the central nervous system, cardiovascular system, pulmonary system, and hepatobiliary system. Salmonella Pathogenicity Island-1 and Salmonella Pathogenicity Island-2 are the two genomic segments containing genes encoding virulent factors that regulate its invasion and systemic pathogenesis. This Review aims to shed light on a comparative analysis of the virulence and pathogenesis of the typhoidal and nontyphoidal serovars of S. enterica.
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Affiliation(s)
- Ritika Chatterjee
- Department
of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Atish Roy Chowdhury
- Department
of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Debapriya Mukherjee
- Department
of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Dipshikha Chakravortty
- Department
of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, Karnataka 560012, India
- Centre
for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
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4
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Boruah A, Bora S, Thakur A, Dutta HS, Saikia BK. Solid-State Phosphors from Coal-Derived Carbon Quantum Dots. ACS Omega 2023; 8:25410-25423. [PMID: 37483255 PMCID: PMC10357543 DOI: 10.1021/acsomega.3c02884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 06/22/2023] [Indexed: 07/25/2023]
Abstract
With unique optical and chemical properties, carbon quantum dots (CQDs) find tremendous applications in chemistry, biology, and materials science to medicine. To expand the applicability of coal-derived CQDs from the liquid to solid state, we herein report the sustainable synthesis of solid phosphors from coal-derived CQDs using poly(vinyl alcohol) (PVA) and silica (SiO2) as an organic and inorganic matrix. Two coal-derived CQDs were obtained using an eco-friendly ultrasonic-assisted wet oxidation method. The structural and chemical properties of the CQDs were extensively investigated and compared with commercial CQDs. The coal-derived CQDs exhibited blue fluorescence with 8.9 and 14.9% quantum yields. The CQDs were found to be self-co-doped with nitrogen and sulfur heteroatoms through surface and edge functional groups. Solid-state fluorescence of PVA/CQD composite films confirmed that the CQDs retained their excellent blue emission in a dry solid matrix. A facile one-pot sol-gel method was employed to fabricate SiO2/CQD phosphors with the unique fluorescence emission. Due to their special structural features, coal-derived CQDs favored the heterogeneous nucleation and rapid formation of SiO2/CQD phosphors. Further, coal-derived CQDs caused high-intensity white light emission with CIE coordinates of (0.312, 0.339) by endowing a suitable band gap structure in a SiO2/CQD solid phosphor for potential optical applications.
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Affiliation(s)
- Anusuya Boruah
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sarmistha Bora
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
| | - Ashutosh Thakur
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Hemant Sankar Dutta
- Analytical
Chemistry Group, Materials Science & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Binoy K. Saikia
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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5
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Sadaiappan B, Balakrishnan P, C.R. V, Vijayan NT, Subramanian M, Gauns MU. Applications of Machine Learning in Chemical and Biological Oceanography. ACS Omega 2023; 8:15831-15853. [PMID: 37179641 PMCID: PMC10173431 DOI: 10.1021/acsomega.2c06441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 02/22/2023] [Indexed: 05/15/2023]
Abstract
Machine learning (ML) refers to computer algorithms that predict a meaningful output or categorize complex systems based on a large amount of data. ML is applied in various areas including natural science, engineering, space exploration, and even gaming development. This review focuses on the use of machine learning in the field of chemical and biological oceanography. In the prediction of global fixed nitrogen levels, partial carbon dioxide pressure, and other chemical properties, the application of ML is a promising tool. Machine learning is also utilized in the field of biological oceanography to detect planktonic forms from various images (i.e., microscopy, FlowCAM, and video recorders), spectrometers, and other signal processing techniques. Moreover, ML successfully classified the mammals using their acoustics, detecting endangered mammalian and fish species in a specific environment. Most importantly, using environmental data, the ML proved to be an effective method for predicting hypoxic conditions and harmful algal bloom events, an essential measurement in terms of environmental monitoring. Furthermore, machine learning was used to construct a number of databases for various species that will be useful to other researchers, and the creation of new algorithms will help the marine research community better comprehend the chemistry and biology of the ocean.
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Affiliation(s)
- Balamurugan Sadaiappan
- Department
of Biology, United Arab Emirates University, Al Ain 971, UAE
- Plankton
Laboratory, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Preethiya Balakrishnan
- Faraday-Fleming
Laboratory, London W148TL, United Kingdom
- University
of London, London WC1E 7HU, United
Kingdom
| | - Vishal C.R.
- Plankton
Laboratory, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Neethu T. Vijayan
- Plankton
Laboratory, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
| | - Mahendran Subramanian
- Faraday-Fleming
Laboratory, London W148TL, United Kingdom
- Department
of Computing, Imperial College, London SW7 2AZ, United Kingdom
| | - Mangesh U. Gauns
- Plankton
Laboratory, Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India
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6
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Marinov AD, Bravo Priegue L, Shah AR, Miller TS, Howard CA, Hinds G, Shearing PR, Cullen PL, Brett DJL. Ex Situ Characterization of 1T/2H MoS 2 and Their Carbon Composites for Energy Applications, a Review. ACS Nano 2023; 17:5163-5186. [PMID: 36926849 PMCID: PMC10062033 DOI: 10.1021/acsnano.2c08913] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
The growing interest in the development of next-generation net zero energy systems has led to the expansion of molybdenum disulfide (MoS2) research in this area. This activity has resulted in a wide range of manufacturing/synthesis methods, controllable morphologies, diverse carbonaceous composite structures, a multitude of applicable characterization techniques, and multiple energy applications for MoS2. To assess the literature trends, 37,347 MoS2 research articles from Web of Science were text scanned to classify articles according to energy application research and characterization techniques employed. Within the review, characterization techniques are grouped under the following categories: morphology, crystal structure, composition, and chemistry. The most common characterization techniques identified through text scanning are recommended as the base fingerprint for MoS2 samples. These include: scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Similarly, XPS and Raman spectroscopy are suggested for 2H or 1T MoS2 phase confirmation. We provide guidance on the collection and presentation of MoS2 characterization data. This includes how to effectively combine multiple characterization techniques, considering the sample area probed by each technique and their statistical significance, and the benefit of using reference samples. For ease of access for future experimental comparison, key numeric MoS2 characterization values are tabulated and major literature discrepancies or currently debated characterization disputes are highlighted.
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Affiliation(s)
- Alexandar D Marinov
- Electrochemical Innovation Laboratory (EIL), Department of Chemical Engineering, University College London (UCL), Gower Street, London WC1E 6BT, U.K
| | | | - Ami R Shah
- Electrochemical Innovation Laboratory (EIL), Department of Chemical Engineering, University College London (UCL), Gower Street, London WC1E 6BT, U.K
| | - Thomas S Miller
- Electrochemical Innovation Laboratory (EIL), Department of Chemical Engineering, University College London (UCL), Gower Street, London WC1E 6BT, U.K
| | - Christopher A Howard
- Department of Physics & Astronomy, University College London (UCL), Gower Street, London WC1E 6BT, U.K
| | - Gareth Hinds
- National Physical Laboratory, Hampton Road, Teddington TW11 0LW, U.K
| | - Paul R Shearing
- Electrochemical Innovation Laboratory (EIL), Department of Chemical Engineering, University College London (UCL), Gower Street, London WC1E 6BT, U.K
| | - Patrick L Cullen
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, U.K
| | - Dan J L Brett
- Electrochemical Innovation Laboratory (EIL), Department of Chemical Engineering, University College London (UCL), Gower Street, London WC1E 6BT, U.K
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7
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Gupta R, Ahmed R, Akhter Z, Kumar M, Singh PP. Silver-mediated Room Temperature Reactions for the Synthesis of N-α-Ketoacyl Sulfoximines and N-α,β-Unsaturated Acyl Sulfoximines. ACS Omega 2023; 8:3812-3820. [PMID: 36743040 PMCID: PMC9893487 DOI: 10.1021/acsomega.2c05894] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 12/09/2022] [Indexed: 06/18/2023]
Abstract
Here, we report a silver-mediated coupling of acetylenes with sulfoximines to synthesize N-α-ketoacyl sulfoximines and N-α,β-unsaturated acyl sulfoximines. The reactions are performed under an open atmosphere using the oxidant K2S2O8 and the ligand 2,2-bipyridyl. However, the fate of the product formation is controlled by the type of substrate used. The coupling between aryl acetylenes and sulfoximines afforded the N-α-ketoacylsulfoximines, while the alkyl acetylenes provided the N-α,β-unsaturated acyl sulfoximines. Controlled experiments reveal the differential reactivity patterns of substrates. The labeling 18O experiments showed that water is the source of the incoming oxygen atom for the keto group of N-α-ketoacyl sulfoximines and N-α,β-unsaturated acyl sulfoximines.
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Affiliation(s)
- Ria Gupta
- Natural
Product & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Riyaz Ahmed
- Natural
Product & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Zaheen Akhter
- Natural
Product & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mukesh Kumar
- Natural
Product & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Parvinder Pal Singh
- Natural
Product & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
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8
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Rana M, Faizan MI, Dar SH, Ahmad T. Correction to "Design and Synthesis of Carbothioamide/Carboxamide-Based Pyrazoline Analogs as Potential Anticancer Agents: Apoptosis, Molecular Docking, ADME Assay, and DNA Binding Studies". ACS Omega 2022; 7:32827-32828. [PMID: 36119987 PMCID: PMC9476182 DOI: 10.1021/acsomega.2c05261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Indexed: 06/15/2023]
Abstract
[This corrects the article DOI: 10.1021/acsomega.2c02033.].
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9
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Lekkala C, Bodala V, Yettula K, Karasala BK, Podugu RL, Vidavalur S. Copper-Catalyzed One-Pot Synthesis of 2,5-Disubstituted 1,3,4-Oxadiazoles from Arylacetic Acids and Hydrazides via Dual Oxidation. ACS Omega 2022; 7:27157-27163. [PMID: 35967030 PMCID: PMC9366783 DOI: 10.1021/acsomega.2c01586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
A simple and efficient protocol has been developed to access symmetrical and unsymmetrical 2,5-disubstituted 1,3,4-oxadiazoles from arylacetic acids and hydrazides via copper-catalyzed dual oxidation under an oxygen atmosphere. Oxidative decarboxylation of arylacetic acids and oxidative functionalization of the imine C-H bond are the key steps. This is the first example of the synthesis of 2,5-disubstituted 1,3,4-oxadiazoles through dual oxidation in one-pot. Avoidance of the expensive ligand and high yield of the products are advantageous features of the developed method.
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Rana M, Faizan MI, Dar SH, Ahmad T. Design and Synthesis of Carbothioamide/Carboxamide-Based Pyrazoline Analogs as Potential Anticancer Agents: Apoptosis, Molecular Docking, ADME Assay, and DNA Binding Studies. ACS Omega 2022; 7:22639-22656. [PMID: 35811873 PMCID: PMC9260921 DOI: 10.1021/acsomega.2c02033] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 06/03/2022] [Indexed: 05/14/2023]
Abstract
To discover anticancer drugs with novel structures and expand our research scope, pyrazoline derivatives (3a-3l) were designed and synthesized through cyclization of chalcones with thiosemicarbazide/semicarbazide in CH3COOH as a solvent. All newly synthesized pyrazoline derivatives were fully characterized using several spectroscopic experiments such as 1H, 13C NMR, FT-IR spectroscopy, and mass analysis. By HPLC, the purity of all analogs was found above 95% and both lead compounds (3a and 3h) were also validated by HRMS. Anticancer activity of synthesized pyrazoline derivatives (3a-3l) was investigated by the MTT assay against the human lung cancer cell (A549), human cervical cancer cell (HeLa), and human primary normal lung cells (HFL-1). Staurosporine (STS) was used as a standard drug. The anticancer results showed that two potent analogs 3a and 3h exhibit excellent activity against A549 (IC50 = 13.49 ± 0.17 and 22.54 ± 0.25 μM) and HeLa cells (IC50 = 17.52 ± 0.09 and 24.14 ± 0.86 μM) and low toxicity against the HFL-1 (IC50 = 114.50 ± 0.01 and 173.20 ± 10 μM). The flow cytometry was further used to confirm the anticancer activity of potent derivatives against the A549 cancer cell line. DNA binding interaction of anticancer agents 3a and 3h with Ct-DNA has been carried out by absorption, fluorescence, EtBr (dye displacement assay), circular dichroism, cyclic voltammetry and time-resolved fluorescence, which showed noncovalent binding mode of interaction. Anticancer activity of both lead compounds (3a and 3h) may be attributed to DNA binding. The evaluation of the antioxidant potential of pyrazoline analogs 3a and 3h by 2,2-diphenyl-1-picrylhydrazyl free radical showed promising antioxidant activity with IC50 values of 0.132 ± 0.012 and 0.215 ± 0.025 μg/mL, respectively. In silico molecular docking of pyrazoline derivatives was also performed using autodock vina software against the DNA hexamer with PDB ID: 1Z3F and ADMET properties to explore their best hits.
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Affiliation(s)
- Manish Rana
- Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Md Imam Faizan
- Multidisciplinary Centre for Advanced Research & Studies, Jamia Millia Islamia, New Delhi 110025, India
| | - Sajad Hussain Dar
- Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Tanveer Ahmad
- Multidisciplinary Centre for Advanced Research & Studies, Jamia Millia Islamia, New Delhi 110025, India
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11
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Rather I, Ali R. An Efficient and Versatile Deep Eutectic Solvent-Mediated Green Method for the Synthesis of Functionalized Coumarins. ACS Omega 2022; 7:10649-10659. [PMID: 35382332 PMCID: PMC8973037 DOI: 10.1021/acsomega.2c00293] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 03/03/2022] [Indexed: 05/14/2023]
Abstract
Herein, we report a green and efficient synthetic route for the construction of diverse functionalized coumarins in good-to-excellent yields (60-98%) via the Pechmann condensation. The optimized synthetic route involves a biodegradable, reusable, and inexpensive deep eutectic solvent (DES) of choline chloride and l-(+)-tartaric acid in a ratio of 1:2 at 110 °C. Interestingly, phloroglucinol and ethyl acetoacetate, upon reaction, furnished the functionalized coumarin (20) in 98% yield within 10 min. On the other front, the same DES at relatively lower reaction temperature (90 °C) was found to provide the bis-coumarins in decent yields (81-97%) within 20-45 min. Moreover, this particular method was found to be quite effective for large-scale coumarin synthesis without noteworthy reduction in the yields of the desired products. Noticeably, in this versatile approach, the DES plays a dual role as solvent as well as catalyst, and it was effectively recycled and reused four times with no significant drop-down in the yield of the product.
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12
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Manhas D, Gour A, Bhardwaj N, Sharma DK, Sharma K, Vij B, Jain SK, Singh G, Nandi U. Pharmacokinetic Assessment of Rottlerin from Mallotus philippensis Using a Highly Sensitive Liquid Chromatography-Tandem Mass Spectrometry-Based Bioanalytical Method. ACS Omega 2021; 6:32637-32646. [PMID: 34901612 PMCID: PMC8655892 DOI: 10.1021/acsomega.1c04266] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/02/2021] [Indexed: 05/16/2023]
Abstract
Rottlerin is a key bioactive phytoconstituent present in the pericarp of Mallotus philippensis. It shows promising multifaceted pharmacological actions against cancer. However, there is hardly any report for the quantification of rottlerin in the biological matrix and on its pharmacokinetic behavior. Therefore, we aimed in the present study to assess selective in vitro ADME properties and in vivo pharmacokinetics of isolated and characterized rottlerin using a newly developed and validated liquid chromatography-tandem mass spectrometry-based highly sensitive bioanalytical method. The method was found to be simple (mobile phase and analytical column), sensitive (1.9 ng/mL), and rapid (run time of 2.5 min). All the validation parameters were within the acceptable criteria of the United States Food and Drug Administration's bioanalytical method validation guideline. The method was found to be very useful to assess lipophilicity, plasma stability, metabolic stability, plasma protein binding of rottlerin, as well as its oral and intravenous pharmacokinetics in mice. Rottlerin showed a number of drug-like pharmacokinetic properties (in vitro). Moreover, it displayed an excellent half-life (>2 h) and oral bioavailability (>35%) as compared to other members of natural phenolics. The present study is the first-time report of in vitro ADME properties and in vivo preclinical pharmacokinetics of rottlerin. The generated information is very much useful for its further development as a phytotherapeutics toward cancer therapy.
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Affiliation(s)
- Diksha Manhas
- PK-PD
Toxicology (PPT) Division, CSIR-Indian Institute
of Integrative Medicine, Jammu, Jammu and Kashmir 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Abhishek Gour
- PK-PD
Toxicology (PPT) Division, CSIR-Indian Institute
of Integrative Medicine, Jammu, Jammu and Kashmir 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Nivedita Bhardwaj
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
| | - Deepak K. Sharma
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
| | - Kuhu Sharma
- PK-PD
Toxicology (PPT) Division, CSIR-Indian Institute
of Integrative Medicine, Jammu, Jammu and Kashmir 180001, India
| | - Bhavna Vij
- PK-PD
Toxicology (PPT) Division, CSIR-Indian Institute
of Integrative Medicine, Jammu, Jammu and Kashmir 180001, India
| | - Shreyans K. Jain
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
| | - Gurdarshan Singh
- PK-PD
Toxicology (PPT) Division, CSIR-Indian Institute
of Integrative Medicine, Jammu, Jammu and Kashmir 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Utpal Nandi
- PK-PD
Toxicology (PPT) Division, CSIR-Indian Institute
of Integrative Medicine, Jammu, Jammu and Kashmir 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
- ,
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13
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Nag S, Das Saha K. Chitosan-Decorated PLGA-NPs Loaded with Tannic Acid/Vitamin E Mitigate Colon Cancer via the NF-κB/β-Cat/EMT Pathway. ACS Omega 2021; 6:28752-28769. [PMID: 34746569 PMCID: PMC8567364 DOI: 10.1021/acsomega.1c03477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Indexed: 05/10/2023]
Abstract
Colon cancer is the second highest contributor of cancer-related deaths throughout the world. Treatment strategies with tannic acid and vitamin E are envisaged as desirable and safe owing to their robust antioxidative and anti-inflammatory potential. In the present report, these bioactives have been nanoencapsulated in poly(d,l-lactide-co-glycolic acid) (PLGA) formulations for maintaining sustained release and ensuring enhanced bioavailability. Capping of nanoparticles (NPs) with chitosan was done for enhanced anticancer efficacy and tumor targeting. CS-PLGA-TA-E, administered intraperitoneally, significantly inhibited tumor number and tumor volume and normalized colon histology in the colon cancer. Tissue distribution studies showed that TA/E content from CS-PLGA-TA-E was present in a higher concentration in the tumor tissue than the concentration of TA/E content from PLGA-TA-E or free TA or free E. Also, the TA/E content from all of the treatment groups showed its highest concentration in the tumor compared to other organs. Antioxidant enzymes and proinflammatory cytokines (TNF-α, IL-1β, IL-6) were inhibited by CS-PLGA-TA-E. CS-PLGA-TA-E inhibited markers for tumor growth (EGFR-PI3K-AKT), inflammation (NF-κB/Stat3), β-catenin signaling (β-catenin, c-myc, cyclin D1), EMT (E-cadherin, N-cadherin, vimentin), and apoptosis (Bcl-2) in a significantly greater way as compared with PLGA-TA-E, TA, or E. CS-PLGA-TA-E NPs can be considered promising anticancer drugs for colon cancer.
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Mishra P, Nandi CK. Structural Decoding of a Small Molecular Inhibitor on the Binding of SARS-CoV-2 to the ACE 2 Receptor. J Phys Chem B 2021; 125:8395-8405. [PMID: 34297554 PMCID: PMC8340085 DOI: 10.1021/acs.jpcb.1c03294] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/08/2021] [Indexed: 01/21/2023]
Abstract
Inhibition of the interaction of the receptor-binding domain (RBD) of the spike protein and the human angiotensin-converting enzyme 2 (ACE 2) receptor is the most effective therapeutic formulation to restrict the contagious respiratory illness and multiple organ failure caused by the novel SARS-CoV-2 virus. Based on the structural decoding of the RBD of the spike protein, here we have generated a new set of small molecules that have strong inhibiting properties on the binding of the spike protein to ACE 2 receptors. These small-molecule inhibitors surprisingly show binding to the main protease, nucleoprotein, and RNA-dependent RNA polymerase, which are the other responsible factors for the viral infection. The newly designed molecules show better performance than several existing repurposed drugs. Conformational changes from closed to closed lock and open conformations of the SARS-CoV-2 binding to the ACE 2 receptor were observed in the presence of these small molecular inhibitors, suggesting their strong abilities to counteract the SARS-CoV-2 infection.
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Affiliation(s)
- Pushpendra
Mani Mishra
- School of Basic Sciences, Indian
Institute of Technology Mandi, Himachal Pradesh 175005, India
| | - Chayan Kanti Nandi
- School of Basic Sciences, Indian
Institute of Technology Mandi, Himachal Pradesh 175005, India
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15
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Qais F, Khan MS, Ahmad I, Husain FM, Khan RA, Hassan I, Shahzad SA, AlHarbi W. Coumarin Exhibits Broad-Spectrum Antibiofilm and Antiquorum Sensing Activity against Gram-Negative Bacteria: In Vitro and In Silico Investigation. ACS Omega 2021; 6:18823-18835. [PMID: 34337222 PMCID: PMC8320077 DOI: 10.1021/acsomega.1c02046] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/07/2021] [Indexed: 05/07/2023]
Abstract
Quorum sensing (QS) and biofilm inhibition are recognized as the novel drug targets for the broad-spectrum anti-infective strategy to combat the infections caused by drug-resistant bacterial pathogens. Many compounds from medicinal plants have been found to demonstrate anti-infective activity. However, broad-spectrum anti-QS and antibiofilm efficacy and their mode of action are poorly studied. In this study, the efficacy of coumarin was tested against QS-regulated virulent traits of Gram-negative bacteria. Coumarin inhibited the production of violacein pigment in Chromobacterium violaceum 12472 by 64.21%. Similarly, there was 87.25, 70.05, 76.07, 58.64, 48.94, and 81.20% inhibition of pyocyanin, pyoverdin, and proteolytic activity, lasB elastase activity, swimming motility, and rhamnolipid production, respectively, in Pseudomonas aeruginosa PAO1. All tested virulence factors of Serratia marcescens MTCC 97 were also suppressed by more than 50% at the highest sub-minimum inhibitory concentration. Moreover, the biofilms of bacterial pathogens were also inhibited in a dose-dependent manner. Molecular docking and molecular dynamics (MD) simulation gave insights into the possible mode of action. The binding energy obtained by docking studies ranged from -5.7 to -8.1 kcal mol-1. Coumarin was found to be docked in the active site of acylhomoserine lactone (AHL) synthases and regulatory proteins of QS. MD simulations further supported the in vitro studies where coumarin formed a stable complex with the tested proteins. The secondary structure of all proteins showed a negligible change in the presence of coumarin. Computational studies showed that the possible mechanisms of anti-QS activity were the inhibition of AHL synthesis, antagonization of QS-regulatory proteins, and blocking of the receptor proteins. The findings of this study clearly highlight the potency of coumarin against the virulence factors of Gram-negative bacterial pathogens that may be developed as an effective inhibitor of QS and biofilms.
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Affiliation(s)
- Faizan
Abul Qais
- Department
of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
| | - Mohammad Shavez Khan
- Department
of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
| | - Iqbal Ahmad
- Department
of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
- . Phone: +91-571-2703516, +91-9897902936. Fax: +91-571-2703516
| | - Fohad Mabood Husain
- Department
of Food Science and Nutrition, King Saud
University, Riyadh 11451, Saudi Arabia
| | - Rais Ahmad Khan
- Department
of Chemistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Iftekhar Hassan
- Department
of Zoology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Syed Ali Shahzad
- Department
of Food Science and Nutrition, King Saud
University, Riyadh 11451, Saudi Arabia
| | - Walaa AlHarbi
- Department
of Chemistry, Faculty of Science, King Khalid
University, P.O. Box 9004, Abha 62529, Saudi Arabia
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16
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Bhat S, Qureshi IA. Structural and Functional Basis of Potent Inhibition of Leishmanial Leucine Aminopeptidase by Peptidomimetics. ACS Omega 2021; 6:19076-19085. [PMID: 34337246 PMCID: PMC8320071 DOI: 10.1021/acsomega.1c02386] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
A leucine aminopeptidase primarily hydrolyzes amino acid leucine from the N-terminus end of proteins and is involved in free amino acid regulation, which makes it a potential therapeutic target against neglected tropical diseases including leishmaniasis. We here report the purification and characterization of the leucine aminopeptidase from Leishmania donovani (LdLAP). Using a set of biophysical and biochemical methods, we demonstrate that this enzyme was properly folded after expression in a bacterial system and catalytically active when supplemented with divalent metal cofactors with synthetic fluorogenic peptides. Subsequently, enzymatic inhibition assay denoted that LdLAP activity was inhibited by peptidomimetics, particularly actinonin, which caused potent inhibition and exhibited stronger binding association with the LdLAP. Stronger association of actinonin with the LdLAP was due to a stable complex formation mostly mediated by hydrogen bonding with catalytic and substrate-binding residues in the C-terminal catalytic domain. With molecular dynamics simulation studies, we demonstrate that peptidomimetics retain their topological space in the LdLAP catalytic pocket and form a stable complex. These results expand the current knowledge of aminopeptidase biochemistry and highlight that specific actinonin or peptidomimetic-based inhibitors may emerge as leads to combat leishmaniasis.
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Tiwari V, Joshi P, Yadav K, Sharma A, Chowdhury S, Manhas A, Kumar N, Tripathi R, Haq W. Synthesis and Antimalarial Activity of 4-Methylaminoquinoline Compounds against Drug-Resistant Parasite. ACS Omega 2021; 6:12984-12994. [PMID: 34056449 PMCID: PMC8158791 DOI: 10.1021/acsomega.0c06053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/15/2021] [Indexed: 05/26/2023]
Abstract
A series of novel 4-aminoquinoline analogues bearing a methyl group at 4-aminoquinoline moiety were synthesized via a new and robust synthetic route comprising in situ tert-butoxycarbonyl (Boc) deprotection-methylation cascade resulting in the corresponding N-methylated secondary amine using Red-Al and an efficient microwave-assisted strategy for the fusion of N-methylated secondary amine with 4-chloroquinoline nucleus to access the series of novel 4-N-methylaminoquinoline analogues. The new series of compounds were evaluated for their antimalarial activity in in vitro and in vivo models. Among 21 tested compounds, 9a-i have shown a half-maximal inhibitory concentration (IC50) value less than 0.5 μM (i.e., <500 nM) against both chloroquine-sensitive strain 3D7 and chloroquine-resistant strain K1 of Plasmodium falciparum with acceptable cytotoxicity. Based on the in vitro antimalarial activity, selected compounds were screened for their in vivo antimalarial activity against Plasmodium yoelii nigeriensis (a multidrug-resistant) parasite in Swiss mice. Most of the compounds have shown significant inhibition on day 4 post infection at the oral dose of 100 mg/kg. Compound 9a has shown 100% parasite inhibition on day 4, and out of five treated mice, two were cured till the end of the experiment. The present study suggests that 4-methylamino substitution is well tolerated for the antiplasmodial activity with reduced toxicity and therefore will be highly useful for the discovery of a new antimalarial agent against drug-resistant malaria.
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Affiliation(s)
- Vinay
Shankar Tiwari
- Medicinal
and Process Chemistry Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
| | - Prince Joshi
- Division
of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kanchan Yadav
- Division
of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Anamika Sharma
- Division
of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Sushobhan Chowdhury
- Medicinal
and Process Chemistry Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
| | - Ashan Manhas
- Division
of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Niti Kumar
- Division
of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Renu Tripathi
- Division
of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Wahajul Haq
- Medicinal
and Process Chemistry Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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