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Hussain R, Rehman W, Rahim F, Mahmoud AM, Alanazi MM, Khan S, Rasheed L, Khan I. Synthetic transformation of 6-Fluoroimidazo[1,2-a]Pyridine-3-carbaldehyde into 6-Fluoroimidazo[1,2-a]Pyridine-Oxazole Derivatives: In vitro urease inhibition and in silico study. Saudi Pharm J 2023; 31:101667. [PMID: 37448838 PMCID: PMC10336670 DOI: 10.1016/j.jsps.2023.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 05/27/2023] [Indexed: 07/15/2023] Open
Abstract
Purpose Ulcer is a serious disease that is caused due to different bacteria and over usage of various NSAIDs which caused to reduce the defensive system of stomach. Therefore, some novel series are needed to overcome these issues. Methods Oxazole-based imidazopyridine scaffolds (4a-p) were designed and synthesized by two step reaction protocol and then subjected to urease inhibition profile (in vitro). All the newly afforded analogs (4a-p) were found potent and demonstrated moderate to significant inhibition profile. Results Particularly, the analogs 4i (IC50 = 5.68 ± 1.66 μM), 4o (IC50 = 7.11 ± 1.24 μM), 4 g (IC50 = 9.41 ± 1.19 μM) and 4 h (IC50 = 10.45 ± 2.57 μM) were identified to be more potent than standard thiourea drug (IC50 = 21.37 ± 1.76 μM). Additionally, the variety of spectroscopic tools such as 1H NMR, 13C NMR and HREI-MS analysis were employed to confirm the precise structures of all the newly afforded analogs. Discussion The structure-activity relationship (SAR) studies showed that analogs possess the substitution either capable of furnishing strong HB like -OH or had strong EW nature such as -CF3 & -NO2 groups displayed superior inhibitory potentials than the standard thiourea drug. A good PLI (protein-ligand interaction) profile was shown by most active analogs when subjected to molecular study against corresponding target with key significant interactions such as pi-pi stacking, pi-pi T shaped and hydrogen bonding.
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Affiliation(s)
- Rafaqat Hussain
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Wajid Rehman
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Fazal Rahim
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Ayman M. Mahmoud
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
| | - Mohammed M Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Shoaib Khan
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Liaqat Rasheed
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
| | - Imran Khan
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan
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Newar UD, Borra S, Maurya RA. Visible-Light 2,4-Dinitrophenol-Mediated Photoannulation of α-Azidochalcones into 2,5-Diaryloxazoles. Org Lett 2022; 24:4454-4458. [PMID: 35700202 DOI: 10.1021/acs.orglett.2c01691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel and efficient visible-light 2,4-dinitrophenol (2,4-DNP) mediated photoannulation of α-azidochalcones into 2,5-diaryloxazoles was developed. The carbon-carbon double bond of α-azidochalcone was cleaved, leading to the formation of new C-O and C-N bonds in the photoannulation. Control experiments were carried out, and a plausible mechanism of the photoannulation was proposed. The scope of the reaction was studied by synthesizing a series of 2,5-diaryloxazoles including two naturally occurring oxazoles (Texamine and Balsoxin) in excellent yields.
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Affiliation(s)
- Uma Devi Newar
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology (NEIST), Jorhat 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Satheesh Borra
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology (NEIST), Jorhat 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ram Awatar Maurya
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology (NEIST), Jorhat 785006, India
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Huang W, Shi L, Liu M, Zhang Z, Liu F, Long T, Wen S, Huang D, Wang K, Zhou R, Fang W, Hu H, Ke S. Design, Synthesis, and Cytotoxic Activity of Novel Natural Arylsulfonamide-Inspired Molecules. Molecules 2022; 27:molecules27051479. [PMID: 35268580 PMCID: PMC8911723 DOI: 10.3390/molecules27051479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 02/04/2023] Open
Abstract
Primary arylsulfonamide functional groups feature prominently in diverse pharmaceuticals. However, natural arylsulfonamides are relatively infrequent. In this work, two novel arylsulfonamide natural products were first synthesized, and then a series of novel molecules derived from natural arylsulfonamides were designed and synthesized, and their in vitro cytotoxic activities against A875, HepG2, and MARC145 cell lines were systematically evaluated. The results indicate that some of these arylsulfonamide derivatives exhibit significantly good cytotoxic activity against the tested cell lines compared with the control 5-fluorouracil (5-FU), such as compounds 10l, 10p, 10q, and 10r. In particular, the potential molecule 10q, containing a carbazole moiety, exhibited the highest inhibitory activity against all tested cell lines, with IC50 values of 4.19 ± 0.78, 3.55 ± 0.63, and 2.95 ± 0.78 μg/mL, respectively. This will offer the potential to discover novel drug-like compounds from the sparsely populated area of natural products that can lead to effective anticancer agents.
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Affiliation(s)
- Wenbo Huang
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Liqiao Shi
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Manli Liu
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Zhigang Zhang
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Fang Liu
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Tong Long
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Shaohua Wen
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Daye Huang
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Kaimei Wang
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Ronghua Zhou
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Wei Fang
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
- Correspondence: (W.F.); (H.H.); (S.K.); Tel.: +86-27-59101919 (S.K.)
| | - Hongtao Hu
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
- Correspondence: (W.F.); (H.H.); (S.K.); Tel.: +86-27-59101919 (S.K.)
| | - Shaoyong Ke
- Key Laboratory of Microbial Pesticides, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (W.H.); (L.S.); (M.L.); (Z.Z.); (F.L.); (T.L.); (S.W.); (D.H.); (K.W.); (R.Z.)
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
- Correspondence: (W.F.); (H.H.); (S.K.); Tel.: +86-27-59101919 (S.K.)
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Novel capto-dative (Z,E)-2-(alkylthio)alk-2-en-4-ynals: synthesis and heterocyclization. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mukku N, Madivalappa Davanagere P, Chanda K, Maiti B. A Facile Microwave-Assisted Synthesis of Oxazoles and Diastereoselective Oxazolines Using Aryl-Aldehydes, p-Toluenesulfonylmethyl Isocyanide under Controlled Basic Conditions. ACS OMEGA 2020; 5:28239-28248. [PMID: 33163807 PMCID: PMC7643254 DOI: 10.1021/acsomega.0c04130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
In this study, a highly efficient two-component [3 + 2] cycloaddition reaction of substituted aryl aldehydes with 4-toluenesulfonylmethyl isocyanide (TosMIC) in the presence of 2 equiv of potassium phosphate as a base to 5-substituted oxazoles were established in a isopropanol medium under microwave irradiation. However, using 1 equiv of K3PO4 as a base resulted in the diastereoselective synthesis of 4,5-disubstituted oxazolines under identical reaction conditions. The foremost benefits of these protocols are the moderate-to-excellent yields with good functional group compatibility, simple experimental procedure, inexpensive readily available starting materials, nonchromatographic purification, and high bond-forming efficiency. The synthetic manipulation reported herein represents a cleaner route to the sustainable preparation of 5-substituted oxazoles and diastereoselective 4,5-disubstituted oxazolines derivatives.
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Affiliation(s)
- Narasimharao Mukku
- Department of Chemistry,
School of Advanced Sciences, Vellore Institute
of Technology, Vellore 632014, India
| | | | - Kaushik Chanda
- Department of Chemistry,
School of Advanced Sciences, Vellore Institute
of Technology, Vellore 632014, India
| | - Barnali Maiti
- Department of Chemistry,
School of Advanced Sciences, Vellore Institute
of Technology, Vellore 632014, India
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Ke S, Fang W, Huang W, Zhang Z, Shi L, Wan Z, Wang K, Cao C, Huang D. Sulfur-containing natural hinduchelins derivatives as potential antifungal agents against Rhizoctonia solani. Bioorg Med Chem Lett 2020; 30:127245. [PMID: 32389528 DOI: 10.1016/j.bmcl.2020.127245] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/28/2020] [Accepted: 05/02/2020] [Indexed: 01/06/2023]
Abstract
Aryl-oxazole alkaloids are an important class of heterocyclic natural products, and which has been demonstrated to exhibit broad biological functions. During the course of our research for highly active compounds from natural products, the natural hinduchelins A-D with typical aryl-oxazole unit have been synthesized and investigated. So, in order to develop highly potential functional molecules, a series of novel sulfur-containing aryl-oxazole compounds derived from natural hinduchelins was designed and synthesized, and their in vitro fungicidal activities against four common plant pathogenic fungi (oomycetes Phytophthora capsici, ascomycetes Sclerotinia sclerotiorum, deuteromycetes Botrytis cinerea and basidiomycetes Rhizoctonia solani) were evaluated, the results demonstrated that compounds 7b and 7c displayed good selectivity and specificity in vitro against basidiomycetes R. solani. In addition, the in vivo antifungal activities also indicated compounds 7b and 7c can protect the horsebean against infection by R. solani, and the possible mechanism of antifungal action for these compounds has also been investigated.
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Affiliation(s)
- Shaoyong Ke
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China.
| | - Wei Fang
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Wenbo Huang
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Zhigang Zhang
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Liqiao Shi
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Zhongyi Wan
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Kaimei Wang
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Chunxia Cao
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Daye Huang
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research Centre, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China.
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7
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Singh D, Kumar GS, Kapur M. Oxazolinyl-Assisted Ru(II)-Catalyzed C–H Allylation with Allyl Alcohols and Synthesis of 4-Methyleneisochroman-1-ones. J Org Chem 2019; 84:12881-12892. [DOI: 10.1021/acs.joc.9b01536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Diksha Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Gangam Srikanth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
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