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Denner TC, Heise NV, Serbian I, Angeli A, Supuran CT, Csuk R. An asiatic acid derived trisulfamate acts as a nanomolar inhibitor of human carbonic anhydrase VA. Steroids 2024; 205:109381. [PMID: 38325751 DOI: 10.1016/j.steroids.2024.109381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
This investigation delves into the inhibitory capabilities of a specific set of triterpenoic acids on diverse isoforms of human carbonic anhydrase (hCA). Oleanolic acid (1), maslinic acid (2), betulinic acid (3), platanic acid (4), and asiatic acid (5) were chosen as representative triterpenoids for evaluation. The synthesis involved acetylation of parent triterpenoic acids 1-5, followed by sequential reactions with oxalyl chloride and benzylamine, de-acetylation of the amides, and subsequent treatment with sodium hydride and sulfamoyl chloride, leading to the formation of final compounds 21-25. Inhibition assays against hCAs I, II, VA, and IX demonstrated noteworthy outcomes. A derivative of betulinic acid, compound 23, exhibited a Ki value of 88.1 nM for hCA VA, and a derivative of asiatic acid, compound 25, displayed an even lower Ki value of 36.2 nM for the same isoform. Notably, the latter compound displayed enhanced inhibitory activity against hCA VA when compared to the benchmark compound acetazolamide (AAZ), which had a Ki value of 63.0 nM. Thus, this compound surpasses the inhibitory potency and isoform selectivity of the standard compound acetazolamide (AAZ). In conclusion, the research offers insights into the inhibitory potential of selected triterpenoic acids across diverse hCA isoforms, emphasizing the pivotal role of structural attributes in determining isoform-specific inhibitory activity. The identification of compound 25 as a robust and selective hCA VA inhibitor prompts further exploration of its therapeutic applications.
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Affiliation(s)
- Toni C Denner
- Martin-Luther University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Dtr. 2 D-06120 Halle (Saale), Germany
| | - Niels V Heise
- Martin-Luther University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Dtr. 2 D-06120 Halle (Saale), Germany
| | - Immo Serbian
- Martin-Luther University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Dtr. 2 D-06120 Halle (Saale), Germany
| | - Andrea Angeli
- Neurofarba Department, University of Florence, Section of Pharmaceutical Sciences, Via Ugo Schiff 6, 50010 Sesto Florentino, Florence, Italy
| | - Claudiu T Supuran
- Neurofarba Department, University of Florence, Section of Pharmaceutical Sciences, Via Ugo Schiff 6, 50010 Sesto Florentino, Florence, Italy
| | - René Csuk
- Martin-Luther University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Dtr. 2 D-06120 Halle (Saale), Germany.
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2
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Elgazar A, El-Domany RA, Eldehna WM, Badria FA. 3-Acetyl-11-keto-β-boswellic Acid-Based Hybrids Alleviate Acetaminophen-Induced Hepatotoxicity in HepG2 by the Regulation of Inflammatory and Oxidative Stress Pathways: An Integrated Approach. ACS OMEGA 2023; 8:39490-39510. [PMID: 37901542 PMCID: PMC10601058 DOI: 10.1021/acsomega.3c05247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/28/2023] [Indexed: 10/31/2023]
Abstract
In an effort to develop new compounds for managing drug-induced liver injury, we prepared 23 novel hybrids based on 3-acetyl-11-keto-β-boswellic acid (AKBA) using various biocompatible linkers. A bioguided approach was employed to identify the most promising hybrid. Eight compounds exhibited superior anti-inflammatory activity compared to the parent compound. Two of these hybrids (5b and 18) were able to reduce gene expression of TNF-α in LPS-induced inflammation in RAW 264.7 cells, similar to dexamethasone. Subsequently, the hepatoprotective potential of these hybrids was evaluated against acetaminophen (APAP) toxicity in HepG2 cells at doses of 1 and 10 μM. Both hybrids effectively restored cytokine levels, which had been elevated by APAP, to normal levels. Furthermore, they normalized depleted superoxide dismutase and reduced glutathione levels while significantly reducing malondialdehyde (MDA) levels. Network pharmacology analysis suggested that AKBA-based hybrids exert their action by regulating PI3K and EGFR pathways, activating anti-inflammatory mechanisms, and initiating tissue repair and regeneration. Molecular docking studies provided insights into the interaction of the hybrids with PI3K. Additionally, the hybrids demonstrated good stability at different pH levels, following first-order kinetics, with relatively long half-lives, suggesting potential for absorption into circulation without significant degradation.
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Affiliation(s)
- Abdullah
A. Elgazar
- Department
of Pharmacognosy, Faculty of Pharmacy, Kafrelsheikh
University, Kafrelsheikh 33516, Egypt
| | - Ramadan A. El-Domany
- Department
of Microbiology and Immunology, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Wagdy M. Eldehna
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Farid A. Badria
- Department
of Pharmacognosy, Faculty of Pharmacy, Mansoura
University, Mansoura 35516, Egypt
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Rehman NU, Ullah S, Alam T, Halim SA, Mohanta TK, Khan A, Anwar MU, Csuk R, Avula SK, Al-Harrasi A. Discovery of New Boswellic Acid Hybrid 1 H-1,2,3-Triazoles for Diabetic Management: In Vitro and In Silico Studies. Pharmaceuticals (Basel) 2023; 16:229. [PMID: 37259377 PMCID: PMC9960759 DOI: 10.3390/ph16020229] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 07/25/2023] Open
Abstract
A series of 24 new 1H-1,2,3-triazole hybrids of 3-O-acetyl-11-keto-β-boswellic acid (β-AKBA (1)) and 11-keto-β-boswellic acid (β-KBA (2)) was designed and synthesized by employing "click" chemistry in a highly efficient manner. The 1,3-dipolar cycloaddition reaction between β-AKBA-propargyl ester intermediate 3 or β-KBA-propargyl ester intermediate 4 with substituted aromatic azides 5a-5k in the presence of copper iodide (CuI) and Hünig's base furnished the desired products-1H-1,2,3-triazole hybrids of β-AKBA (6a-6k) and β-KBA (7a-7k)-in high yields. All new synthesized compounds were characterized by 1H-, 13C-NMR spectroscopy, and HR-ESI-MS spectrometry. Furthermore, their α-glucosidase-inhibitory activity was evaluated in vitro. Interestingly, the results obtained from the α-glucosidase-inhibitory assay revealed that all the synthesized derivatives are highly potent inhibitors, with IC50 values ranging from 0.22 to 5.32 µM. Among all the compounds, 6f, 7h, 6j, 6h, 6g, 6c, 6k, 7g, and 7k exhibited exceptional inhibitory potency and were found to be several times more potent than the parent compounds 1 and 2, as well as standard acarbose. Kinetic studies of compounds 6g and 7h exhibited competitive and mixed types of inhibition, with ki values of 0.84 ± 0.007 and 1.18 ± 0.0012 µM, respectively. Molecular docking was carried out to investigate the binding modes of these compounds with α-glucosidase. The molecular docking interactions indicated that that all compounds are well fitted in the active site of α-glucosidase, where His280, Gln279, Asp215, His351, Arg442, and Arg315 mainly stabilize the binding of these compounds. The current study demonstrates the usefulness of incorporating a 1H-1,2,3-triazole moiety into the medicinally fascinating boswellic acids skeleton.
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Affiliation(s)
- Najeeb Ur Rehman
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - Saeed Ullah
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - Tanveer Alam
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - Sobia Ahsan Halim
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - Tapan Kumar Mohanta
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - Ajmal Khan
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - Muhammad U. Anwar
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - René Csuk
- Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Satya Kumar Avula
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa 616, Oman
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Triazole-tethered boswellic acid derivatives against breast cancer: synthesis, in vitro, and in-silico studies. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Small Structural Differences Govern the Carbonic Anhydrase II Inhibition Activity of Cytotoxic Triterpene Acetazolamide Conjugates. Molecules 2023; 28:molecules28031009. [PMID: 36770674 PMCID: PMC9919727 DOI: 10.3390/molecules28031009] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/12/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Acetylated triterpenoids betulin, oleanolic acid, ursolic acid, and glycyrrhetinic acid were converted into their succinyl-spacered acetazolamide conjugates. These conjugates were screened for their inhibitory activity onto carbonic anhydrase II and their cytotoxicity employing several human tumor cell lines and non-malignant fibroblasts. As a result, the best inhibitors were derived from betulin and glycyrrhetinic acid while those derived from ursolic or oleanolic acid were significantly weaker inhibitors but also of diminished cytotoxicity. A betulin-derived conjugate held a Ki = 0.129 μM and an EC50 = 8.5 μM for human A375 melanoma cells.
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Khan M, Avula SK, Halim SA, Waqas M, Asmari M, Khan A, Al-Harrasi A. Biochemical and in silico inhibition of bovine and human carbonic anhydrase-II by 1H-1,2,3-triazole analogs. Front Chem 2022; 10:1072337. [PMID: 36505753 PMCID: PMC9732439 DOI: 10.3389/fchem.2022.1072337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/09/2022] [Indexed: 11/26/2022] Open
Abstract
A series of 1H-1,2,3-triazole analogs (7a-7d and 9a-9s) were synthesized via "click" chemistry and evaluated for in vitro carbonic anhydrase-II (bovine and human) inhibitory activity. The synthesis of intermediates, 7a and 7c, was achieved by using (S)-(-)ethyl lactate as a starting material. These compounds (7a and 7c) underwent Suzuki-Miyaura cross-coupling reaction with different arylboronic acids in 1,4-dioxane, reflux at 90-120°C for 8 h using Pd(PPh3)4 as a catalyst (5 mol%), and K2CO3 (3.0 equiv)/K2PO4 (3.0 equiv) as a base to produce target 1H-1,2,3-triazole molecules (9a-9s) for a good yield of 67-86%. All the synthesized compounds were characterized through NMR spectroscopic techniques. Furthermore, all those compounds have shown significant inhibitory potential for both sources of carbonic anhydrase-II (CA-II). In the case of bCA-II, compounds 9i, 7d, 9h, 9o, 9g, and 9e showed potent activity with IC50 values in the range of 11.1-17.8 µM. Whereas for hCA-II, compounds 9i, 9c, 9o, and 9j showed great potential with IC50 values in the range of 10.9-18.5 µM. The preliminary structure-activity relationship indicates that the presence of the 1H-1,2,3-triazole moiety in those synthesized 1H-1,2,3-triazole analogs (7a-7d and 9a-9s) significantly contributes to the overall activity. However, several substitutions on this scaffold affect the activity to several folds. The selectivity index showed that compounds 9c, 9k, and 9p are selective inhibitors of hCA-II. Kinetics studies showed that these compounds inhibited both enzymes (bCA-II and hCA-II) in a competitive manner. Molecular docking indicates that all the active compounds fit well in the active site of CA-II. This study has explored the role of 1H-1,2,3-triazole-containing compounds in the inhibition of CA-II to combat CA-II-related disorders.
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Affiliation(s)
- Majid Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa, Oman,H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Satya Kumar Avula
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa, Oman
| | - Sobia Ahsan Halim
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa, Oman
| | - Muhammad Waqas
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa, Oman
| | - Mufarreh Asmari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa, Oman,*Correspondence: Ajmal Khan, ; Ahmed Al-Harrasi,
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa, Oman,*Correspondence: Ajmal Khan, ; Ahmed Al-Harrasi,
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Enzymes Inhibition and Antioxidant Potential of Medicinal Plants Growing in Oman. BIOMED RESEARCH INTERNATIONAL 2022; 2022:7880387. [PMID: 35872867 PMCID: PMC9307329 DOI: 10.1155/2022/7880387] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 12/29/2022]
Abstract
The recent study was designed to explore Dodonaea viscosa, Juniperus excelsa, Helianthemum lippii, and Euryops pinifolius using methanolic (MeOH) extract. Their subfractions were examined against urease, carbonic anhydrase II (CA-II), α-glucosidase enzymes, and free radicals scavenging significance based on local practices via standard methods. Significance potential against the urease enzyme was presented by ethyl acetate fraction (EtOAc) of D. viscosa with (IC50 = 125 ± 1.75 μg/mL), whereas the H. lippii (IC50 = 146 ± 1.39 μg/mL) in the EtOAc was found efficient to scavenge the free radicals. Besides, that appreciable capacity was observed by the J. excelsa, D. viscosa, J. excelsa, and E. pinifolius as compared to the standard acarbose (IC50 = 377.24 ± 1.14 μg/mL). Maximum significance was noticed in methanolic (MeOH) extract of J. excelsa and presented carbonic anhydrase CA-II (IC50 = 5.1 ± 0.20 μg/mL) inhibition as compared to the standard (acetazolamide). We are reporting, for the first time, the CA-II inhibition of all the selected medicinal plants and α-glucosidase, urease, and antioxidant activities of the E. pinifolius. Thus, further screening is needed to isolate the promising bioactive ingredients which act as an alternative remedy to scavenge the free radicals, antiulcer, and act as a potential source to develop new antidiabetic drugs for controlling postprandial blood sugar as well as carbonic anhydrase inhibitors.
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Rafiq K, Ur Rehman N, Halim SA, Khan M, Khan A, Al-Harrasi A. Design, Synthesis and Molecular Docking Study of Novel 3-Phenyl-β-Alanine-Based Oxadiazole Analogues as Potent Carbonic Anhydrase II Inhibitors. Molecules 2022; 27:molecules27030816. [PMID: 35164091 PMCID: PMC8838037 DOI: 10.3390/molecules27030816] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 11/16/2022] Open
Abstract
Carbonic anhydrase-II (CA-II) is strongly related with gastric, glaucoma, tumors, malignant brain, renal and pancreatic carcinomas and is mainly involved in the regulation of the bicarbonate concentration in the eyes. With an aim to develop novel heterocyclic hybrids as potent enzyme inhibitors, we synthesized a series of twelve novel 3-phenyl-β-alanine 1,3,4-oxadiazole hybrids (4a-l), characterized by 1H- and 13C-NMR with the support of HRESIMS, and evaluated for their inhibitory activity against CA-II. The CA-II inhibition results clearly indicated that the 3-phenyl-β-alanine 1,3,4-oxadiazole derivatives 4a-l exhibited selective inhibition against CA-II. All the compounds (except 4d) exhibited good to moderate CA-II inhibitory activities with IC50 value in range of 12.1 to 53.6 µM. Among all the compounds, 4a (12.1 ± 0.86 µM), 4c (13.8 ± 0.64 µM), 4b (19.1 ± 0.88 µM) and 4h (20.7 ± 1.13 µM) are the most active hybrids against carbonic CA-II. Moreover, molecular docking was performed to understand the putative binding mode of the active compounds. The docking results indicates that these compounds block the biological activity of CA-II by nicely fitting at the entrance of the active site of CA-II. These compounds specifically mediating hydrogen bonding with Thr199, Thr200, Gln92 of CA-II.
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Affiliation(s)
- Kashif Rafiq
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (K.R.); (S.A.H.); (M.K.); (A.K.)
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Najeeb Ur Rehman
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (K.R.); (S.A.H.); (M.K.); (A.K.)
- Correspondence: (N.U.R.); (A.A.-H.); Tel.: +968-2544-6328 (A.A.-H.); Fax: +968-2544-6612 (A.A.-H.)
| | - Sobia Ahsan Halim
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (K.R.); (S.A.H.); (M.K.); (A.K.)
| | - Majid Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (K.R.); (S.A.H.); (M.K.); (A.K.)
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (K.R.); (S.A.H.); (M.K.); (A.K.)
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (K.R.); (S.A.H.); (M.K.); (A.K.)
- Correspondence: (N.U.R.); (A.A.-H.); Tel.: +968-2544-6328 (A.A.-H.); Fax: +968-2544-6612 (A.A.-H.)
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Rehman NU, Halim SA, Khan A, Khan M, Al-Hatmi S, Al-Harrasi A. Commikuanoids A-C: New cycloartane triterpenoids with exploration of carbonic anhydrase-II inhibition from the resins of Commiphora kua by in vitro and in silico molecular docking. Fitoterapia 2022; 157:105125. [PMID: 35026306 DOI: 10.1016/j.fitote.2022.105125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 11/19/2022]
Abstract
Three new cycloartane triterpenoids, commikuanoids A-C (1-3), together with four known compounds 4-7, were isolated from the resin of Commiphora kua. Their structures were confirmed by advanced NMR techniques such as 1D (1H and 13C) and 2D (HMBC, HSQC, COSY, NOESY and NOE) and high-resolution mass spectrometry (HRMS). Five compounds (1-5) were screened for in vitro carbonic anhydrase II (CA II) inhibitory activity. All the tested compounds demonstrated significant activity against CA II with IC50 values ranging from 4.9-19.6 μM. Moreover, the binding pattern of each compound in the binding site of CA-II was predicted through in silico molecular docking approach. It was observed that compounds 2, 4, and 5 binds with the Zn ion present in the active site of CA II, while compounds 1 and 3 mediated hydrogen bonding with Thr199 of CA-II, and all the compounds showed good binding score (> - 5 kcal/mol).
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Affiliation(s)
- Najeeb Ur Rehman
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Oman
| | - Sobia Ahsan Halim
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Oman
| | - Ajmal Khan
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Oman
| | - Majid Khan
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Oman; Hussain Ebrahim Jamal, Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Saif Al-Hatmi
- Oman Botanic Garden, Diwan of Royal Court, P.O. Box 808, PC 122, Muscat, Oman
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Oman.
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