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Jung HJ, Park HS, Park HS, Kim HJ, Yoon D, Park Y, Chun P, Chung HY, Moon HR. Exploration of Compounds with 2-Phenylbenzo[ d]oxazole Scaffold as Potential Skin-Lightening Agents through Inhibition of Melanin Biosynthesis and Tyrosinase Activity. Molecules 2024; 29:4162. [PMID: 39275009 PMCID: PMC11396935 DOI: 10.3390/molecules29174162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2024] [Revised: 08/28/2024] [Accepted: 08/30/2024] [Indexed: 09/16/2024] Open
Abstract
Inspired by the potent tyrosinase inhibitory activity of phenolic compounds with a 2-phenylbenzo[d]thiazole scaffold, we explored phenolic compounds 1-15 with 2-phenylbenzo[d]oxazole, which is isosterically related to 2-phenylbenzo[d]thiazole, as novel tyrosinase inhibitors. Among these, compounds 3, 8, and 13, featuring a resorcinol structure, exhibited significantly stronger mushroom tyrosinase inhibition than kojic acid, with compound 3 showing a nanomolar IC50 value of 0.51 μM. These results suggest that resorcinol plays an important role in tyrosinase inhibition. Kinetic studies using Lineweaver-Burk plots demonstrated the inhibition mechanisms of compounds 3, 8, and 13, while docking simulation results indicated that the resorcinol structure contributed to tyrosinase binding through hydrophobic and hydrogen bonding interactions. Additionally, these compounds effectively inhibited tyrosinase activity and melanin production in B16F10 cells and inhibited B16F10 tyrosinase activity in situ in a concentration-dependent manner. As these compounds showed no cytotoxicity to epidermal cells, melanocytes, or keratinocytes, they are appropriate for skin applications. Compounds 8 and 13 demonstrated substantially higher depigmentation effects on zebrafish larvae than kojic acid, even at 800- and 400-times lower concentrations than kojic acid, respectively. These findings suggest that 2-phenylbenzo[d]oxazole is a promising candidate for tyrosinase inhibition.
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Affiliation(s)
- Hee Jin Jung
- Department of Manufacturing Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea
| | - Hyeon Seo Park
- Department of Manufacturing Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea
| | - Hye Soo Park
- Department of Manufacturing Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea
| | - Hye Jin Kim
- Department of Manufacturing Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea
| | - Dahye Yoon
- Department of Manufacturing Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea
| | - Yujin Park
- Department of Medicinal Chemistry, New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Pusoon Chun
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gimhae 50834, Republic of Korea
| | - Hae Young Chung
- Department of Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea
| | - Hyung Ryong Moon
- Department of Manufacturing Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan 46241, Republic of Korea
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2
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Balogun MM, Shamim S, Khan KM, Salar U, Oladosu IA, Lateef M, Wadood A, Taha M, Moronkola DO, Rehman AU, Rahim F, Perveen S. 2‐Mercapto Benzoxazole Derivatives as Novel Leads: Urease Inhibition,
In Vitro
and
In Silico
Studies. ChemistrySelect 2021. [DOI: 10.1002/slct.202102362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Modinat M. Balogun
- H. E. J. Research Institute of Chemistry International Center for Chemical and Biological Sciences University of Karachi Karachi 75270 Pakistan
- Department of Chemistry University of Ibadan Ibadan Nigeria
| | - Shahbaz Shamim
- H. E. J. Research Institute of Chemistry International Center for Chemical and Biological Sciences University of Karachi Karachi 75270 Pakistan
| | - Khalid M. Khan
- H. E. J. Research Institute of Chemistry International Center for Chemical and Biological Sciences University of Karachi Karachi 75270 Pakistan
- Department of Clinical Pharmacy Institute for Research and Medical Consultations (IRMC) Imam Abdulrahman Bin Faisal University P.O. Box 31441 Dammam Saudi Arabia
| | - Uzma Salar
- Dr. Panjwani Center for Molecular Medicine and Drug Research International Center for Chemical and Biological Sciences University of Karachi Karachi 75270 Pakistan
| | | | - Mehreen Lateef
- Department of Biochemistry Multi-Disciplinary Research Laboratory Bahira University Medical and Dental College Karachi 75270 Pakistan
| | - Abdul Wadood
- Department of Biochemistry, Shankar Campus Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa Pakistan
| | - Muhammad Taha
- Department of Clinical Pharmacy Institute for Research and Medical Consultations (IRMC) Imam Abdulrahman Bin Faisal University P.O. Box 31441 Dammam Saudi Arabia
| | | | - Ashfaq U. Rehman
- Department of Biochemistry, Shankar Campus Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa Pakistan
| | - Fazal Rahim
- Department of Chemistry Hazara University Mansehra 21300 Khyber Pakhtunkhwa Pakistan
| | - Shahnaz Perveen
- PCSIR Laboratories Complex, Karachi Shahrah-e-Dr. Salimuzzaman Siddiqui Karachi 75280 Pakistan
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3
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Guzow K, Mulkiewicz E, Obuchowski M, Wiczk W. Biological activity of 3-(2-benzoxazol-5-yl)alanine derivatives. Amino Acids 2021; 53:1257-1268. [PMID: 34240252 PMCID: PMC8325670 DOI: 10.1007/s00726-021-03030-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 06/25/2021] [Indexed: 01/04/2023]
Abstract
Searching for new drugs is still a challenge for science, mainly because of civilization development and globalization which promote the rapid spread of diseases, which is particularly dangerous in the case of infectious ones. Moreover, readily available already known antibiotics are often overused or misused, possibly contributing to the increase in the number of multidrug-resistant microorganisms. A consequence of this is the need for new structures of potential drugs. One of them is a benzoxazole moiety, a basic skeleton of a group of fluorescent heterocyclic compounds already widely used in chemistry, industry, and medicine, which is also present in naturally occurring biologically active compounds. Moreover, synthetic benzoxazoles are also biologically active. Considering all of that, a large group of non-proteinogenic amino acids based on 3-(2-benzoxazol-5-yl)alanine skeleton was studied in search for new antimicrobial and anticancer agents. Screening tests revealed that antibacterial potential of 41 compounds studied is not very high; however, they are selective acting only against Gram-positive bacteria (B. subtilis). Moreover, almost half of the studied compounds have antifungal properties, also against pathogens (C. albicans). Most of studied compounds are toxic to both normal and cancer cells. However, in a few cases, toxicity to normal cells is much lower than for cancer cells indicating these compounds as future anticancer agents. The research carried out on such a large group of compounds allowed to establish a structure–activity relationship which enables to select candidates for further modifications, necessary to improve their biological activity and obtain a new lead structure with potential for therapeutic use.
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Affiliation(s)
- Katarzyna Guzow
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland.
| | - Ewa Mulkiewicz
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Michał Obuchowski
- Laboratory of Molecular Bacteriology, Intercollegiate Faculty of Biotechnology, Medical University of Gdańsk, Dębinki 1, Gdańsk, 80-211, Poland
| | - Wiesław Wiczk
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
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Kim T, Lee SA, Noh T, Choi P, Choi SJ, Song BG, Kim Y, Park YT, Huh G, Kim YJ, Ham J. Synthesis, Structure Revision, and Cytotoxicity of Nocarbenzoxazole G. JOURNAL OF NATURAL PRODUCTS 2019; 82:1325-1330. [PMID: 30958679 DOI: 10.1021/acs.jnatprod.9b00072] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The total synthesis of nocarbenzoxazoles F (1) and G (2), originally obtained from the marine-derived halophilic bacterial strain Nocardiopsis lucentensis DSM 44048, was achieved via a simple and versatile route involving microwave-assisted construction of a benzoxazole skeleton, followed by carbon-carbon bond formation with the corresponding aryl bromides. Unfortunately, the 1H and 13C NMR spectra of natural nocarbenzoxazole G did not agree with those of the synthesized compound. In particular, the spectra of the isolated and synthesized compounds showed considerable differences in the signals from the protons and carbons in the aryl group. The revised structure was validated by the total synthesis of the actual nocarbenzoxazole G (8c) molecule, which is a regioisomer of the compound that was reported earlier as nocarbenzoxazole G. The synthesized derivatives showed specific cytotoxicity to the human cervical carcinoma cell line, HeLa, but did not have any remarkable effect on the other cell lines.
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Affiliation(s)
- Taejung Kim
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Sin-Ae Lee
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Taesub Noh
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Pilju Choi
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Seon-Jun Choi
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Bong Geun Song
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Youngseok Kim
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Young-Tae Park
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Gyuwon Huh
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
- Division of Bio-Medical Science & Technology , University of Science and Technology (UST) , 217 Gajeong-ro, Yuseong-gu , Daejeon 34113 , Republic of Korea
| | - Young-Joo Kim
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
| | - Jungyeob Ham
- Natural Products Research Institute , Korea Institute of Science and Technology (KIST) , 679 Saimdang-ro , Gangneung 25451 , Republic of Korea
- Division of Bio-Medical Science & Technology , University of Science and Technology (UST) , 217 Gajeong-ro, Yuseong-gu , Daejeon 34113 , Republic of Korea
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5
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Abdelhamid AO, Baghos VB, Halim MM. Synthesis and reactivity of N-[3-amino-4-(benzoxazol-2-yl)pyrazol-5-yl]phenylamine. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823407x228830] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Pyrazolo[5,1- a]pyrimidines and pyrazolo[5,1-c][1,2,4]triazines containing benzooxazole moiety are synthesised from N-[3-amino-4-(benzoxazol-2-yl)pyrazol-5-yl]phenylamine or its diazonium chloride with the appropriate active methylene compounds. The newly synthesised compounds were elucidated by elemental analysis, spectral data and alternative synthetic route whenever possible.
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Affiliation(s)
- Abdou O. Abdelhamid
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Victorin B. Baghos
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Mervat M.A. Halim
- Hormone Department, National Research Centre, Dokki, Giza 12622, Egypt
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6
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Li Z, Fang C, Zheng Y, Qiu G, Li X, Zhou H. Multicatalytic Beckmann rearrangement of 2-hydroxylarylketone oxime: Switchable synthesis of benzo[d]oxazoles and N-(2-hydroxylaryl)amides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Lamie PF, Philoppes JN. Design and synthesis of three series of novel antitumor–azo derivatives. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1839-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Zhang W, Liu J, Macho JM, Jiang X, Xie D, Jiang F, Liu W, Fu L. Design, synthesis and antimicrobial evaluation of novel benzoxazole derivatives. Eur J Med Chem 2017; 126:7-14. [DOI: 10.1016/j.ejmech.2016.10.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/03/2016] [Accepted: 10/05/2016] [Indexed: 11/26/2022]
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9
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Synthesis of Lipophilic-2-Mercaptobenzoxazoles and 2-Spirothiophene-Phosphonate Derivatives as Potent Anticancer Agents. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2655] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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10
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Mondal J, Ghorai A, Singh SK, Saha R, Patra GK. Synthesis, structure, photophysical and catalytic properties of CuI–Iodide complexes of di-imine ligands. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.12.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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11
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One-step synthesis of azole- and benzazole-based sulfonamides in aqueous media. Mol Divers 2015; 19:283-92. [PMID: 25613859 DOI: 10.1007/s11030-015-9567-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 01/11/2015] [Indexed: 10/24/2022]
Abstract
Several benzazoles (benzoxazoles, benzothiazoles, and benzimidazoles) and azoles (1H-1,2,4-triazole-5(4H)-thiones and 1,2,4-oxadiazoles) bearing a sulfonamide moiety were efficiently prepared via the reactions of dimethyl (arylsulfonyl) dithioimidocarbonate derivatives and their 2-aminobenzene precursors, thiosemicarbazides, and amidoximes, respectively, in the presence of K(2)CO(3) as a base in aqueous ethanol (25%) as a green media in moderate to excellent yields.
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12
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Zhang G, Wang P, Yang F, Wu Y. Copper-catalyzed synthesis of 2-arylbenzoxazoles from o -aminophenol derivatives with arylmethyl chlorides. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Geng W, Zheng C, Cui S, Liu G, Pu S. A multi-responsive diarylethene system based on the structure transformation by chemical and light stimuli. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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14
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Ertan-Bolelli T, Musdal Y, Bolelli K, Yilmaz S, Aksoy Y, Yildiz I, Aki-Yalcin E, Yalcin I. Synthesis and Biological Evaluation of 2-Substituted-5-(4-nitrophenylsulfonamido)benzoxazoles as Human GST P1-1 Inhibitors, and Description of the Binding Site Features. ChemMedChem 2014; 9:984-92. [DOI: 10.1002/cmdc.201400010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Indexed: 11/09/2022]
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15
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Jhajharia P, Samota MK, Seth G. Synthesis and Antimicrobial Studies of Organophosphates Derived From 2-(2″-Hydroxynaphthyl)Benzoxazole. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2013.769978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Priyanka Jhajharia
- a Department of Chemistry , University of Rajasthan , Jaipur , 302004 , India
| | - Mahesh Kumar Samota
- a Department of Chemistry , University of Rajasthan , Jaipur , 302004 , India
| | - Gita Seth
- a Department of Chemistry , University of Rajasthan , Jaipur , 302004 , India
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16
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Heravi MM, Javanmardi N, Oskooie HA, Baghernejad B, Heidari M, Bamoharram FF. Heteropolyacid as a New, Green and Recyclable Catalyst for the Synthesis of 2-Aryl Benzoxazole under Solvent-Free Conditions. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200900087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Heravi MM, Sadjadi S, Oskooie HA, Shoar RH, Bamoharram FF. One-Pot Synthesis of 2-Arylbenzoxazoles Promoted by Heteropolyacids. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200800133] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Naik S, Desai V. Use of Solid-Supported Reagents towards Synthesis of 2-Arylbenzoxazole, 3, 5-Diarylisoxazole and 1, 3, 5-Triarylpyrazole. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/gsc.2013.31001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Synthesis, Antibacterial and Antioxidant Evaluation of Novel 1-(5,7-Dichloro-1,3-benzoxazol-2-yl)-1H-pyrazolo[3,4-b]quinoline Derivatives. J CHEM-NY 2013. [DOI: 10.1155/2013/234074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Some novel 1-(5,7-dichloro-1,3-benzoxazol-2-yl)-1H-pyrazolo[3,4-b]quinoline derivatives8(a–f) were synthesized by reacting 5,7-dichloro-2-hydrazino-1,3-benzoxazole4and substituted-2-chloro-3-quinoline carbaldehydes usingp-toluenesulfonic acid (PTSA) as a catalyst for the cyclisation. The target molecules have been characterized by IR,1H NMR,13C NMR, and mass spectral studies. The synthesized compounds were screened for biological activities, and some of the compounds have exhibited encouraging antibacterial and antioxidant activities. The compounds8aand8eshowed potent antibacterial activity, whereas the compounds8eand8fact as antioxidants.
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20
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Microwave-assisted one-pot synthesis of benzothiazole and benzoxazole libraries as analgesic agents. J CHEM SCI 2012. [DOI: 10.1007/s12039-012-0251-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Tan H, Pan CX, Xu YL, Wang HS, Pan YM. Synthesis of Benzoxazoles by the Copper Triflate Catalysed Reaction of Nitriles and O-Aminophenols. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13360692916944] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An efficient procedure for the synthesis of benzoxazoles by the heteroannulation of nitriles and o-aminophenols in the presence of a catalytic amount of copper(II) trifluoromethanesulfonate, has been developed. This method represents a practical and attractive alternative for the synthesis of both 2-arylbenzoxazoles and 2-alkylbenzoxazoles.
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Affiliation(s)
- Heng Tan
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, P. R. China
| | - Cheng-xue Pan
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, P. R. China
| | - Yan-li Xu
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, P. R. China
| | - Heng-shan Wang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, P. R. China
| | - Ying-ming Pan
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, P. R. China
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22
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Chou CH, Hsueh YT, Wang BC. Synthesis of 2-Arylbenzoxazoles from Flash Vacuum Pyrolysis of 2-Methoxy-N-(arenylidene)anilines. J CHIN CHEM SOC-TAIP 2011. [DOI: 10.1002/jccs.201190029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Arjunan V, Balamourougane P, Mythili C, Mohan S. Experimental spectroscopic (FTIR, FT-Raman, FT-NMR, UV–Visible) and DFT studies of 2-amino-5-chlorobenzoxazole. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.07.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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24
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Phenylboronic acid catalyzed-cyanide promoted, one-pot synthesis of 2-(2-hydroxyphenyl)benzoxazole derivatives. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.06.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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A simple protocol for the synthesis of 2-arylbenzoxazoles by oxidation with o-iodoxybenzoic acid (IBX) and its application in the synthesis of arylbenzoxazole-containing amino acids. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.11.057] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Fu Y, Li GY, Ye F, Zhang SS, Gao S. Synthesis and biological activity of some novel N-dichloroacetyl-2,3-dihydrobenzoxazole derivatives. HETEROCYCL COMMUN 2011. [DOI: 10.1515/hc.2011.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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27
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28
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An efficient potassium cyanide-promoted synthesis of 2-arylbenzoxazoles from [4.3.0]boron heterobicycles. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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29
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Synthesis of 6-(3-substituted-4H-1,2,4-triazol-4-yl)-2-phenylbenzo[d]oxazoles as potential anticonvulsant agents. Med Chem Res 2009. [DOI: 10.1007/s00044-009-9239-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Liu YK, Mao DJ, Lou SJ, Qian JQ, Xu ZY. Facile and efficient one-pot synthesis of 2-arylbenzoxazoles using hydrogen tetrachloroaurate as catalyst under oxygen atmosphere. J Zhejiang Univ Sci B 2009; 10:472-8. [PMID: 19489113 DOI: 10.1631/jzus.b0820366] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this paper, we presented a novel method for the facile and efficient one-pot synthesis of 2-arylbenzoxazoles, which were directly synthesized from 2-aminophenol and aldehydes catalyzed by hydrogen tetrachloroaurate (HAuCl(4).4H(2)O) under an oxygen atmosphere with anhydrous tetrahydrofuran (THF) as solvent or in solvent-free condition. The results show that this method could bring excellent yields as high as 96%. THF was proven to be the best choice among several solvents screened and the reaction was tolerated with a variety of aromatic aldehydes possessing electron-donating or withdrawing groups. The advantages of the present method lie in catalytic process using economic and environmentally benign dioxygen as oxidant.
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Affiliation(s)
- Yun-kui Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China.
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31
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Ertan T, Yildiz I, Tekiner-Gulbas B, Bolelli K, Temiz-Arpaci O, Ozkan S, Kaynak F, Yalcin I, Aki E. Synthesis, biological evaluation and 2D-QSAR analysis of benzoxazoles as antimicrobial agents. Eur J Med Chem 2009; 44:501-10. [DOI: 10.1016/j.ejmech.2008.04.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Revised: 03/28/2008] [Accepted: 04/08/2008] [Indexed: 11/16/2022]
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32
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Synthesis of 2-substituted-6-(4H-1,2,4-triazol-4-yl)benzo[d]oxazoles as potential anticonvulsant agents. Arch Pharm Res 2009; 32:23-31. [PMID: 19183873 DOI: 10.1007/s12272-009-1114-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 12/15/2008] [Accepted: 12/15/2008] [Indexed: 10/21/2022]
Abstract
A series of 2-substituted-6-(4H-1,2,4-triazol-4-yl)benzo[d]oxazoles were synthesized. The anticonvulsant effect and neurotoxicity of the compounds (intraperitoneally) were evaluated with the maximal electroshock (MES) test, subcutaneous pentylenetetrazole (sc-PTZ), and rotarod tests in mice. 2-Phenyl-6-(4H-1,2,4-triazol-4-yl)benzo[d]oxazole (3g) was the most active and also had the lowest toxicity. In the anti-MES potency test, it showed median effective dose (ED(50)) of 29.5 mg/kg, a median toxicity dose (TD(50)) of 285 mg/kg, and a protective index (PI) of 9.7, which is greater than the reference drug, carbamazepine, which has a PI of 6.4.
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Samota MK, Jhajharia P, Seth G. Synthesis, characterization, and biological activity of organophosphates derived from substituted benzoxazole. HETEROATOM CHEMISTRY 2009. [DOI: 10.1002/hc.20551] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Alper-Hayta S, Arisoy M, Temiz-Arpaci Ö, Yildiz I, Aki E, Özkan S, Kaynak F. Synthesis, antimicrobial activity, pharmacophore analysis of some new 2-(substitutedphenyl/benzyl)-5-[(2-benzofuryl)carboxamido]benzoxazoles. Eur J Med Chem 2008; 43:2568-78. [DOI: 10.1016/j.ejmech.2007.12.019] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Revised: 12/07/2007] [Accepted: 12/12/2007] [Indexed: 11/16/2022]
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35
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Oxidative cleavage of a cyclic hemiketal in the presence of copper(II) and structural characterization of the product complex. TRANSIT METAL CHEM 2008. [DOI: 10.1007/s11243-008-9057-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Oxidative cyclization of thiophenolic and phenolic Schiff's bases promoted by PCC: a new oxidant for 2-substituted benzothiazoles and benzoxazoles. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.004] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Synthesis of some novel 2-substituted benzoxazoles as anticancer, antifungal, and antimicrobial agents. Med Chem Res 2008. [DOI: 10.1007/s00044-007-9076-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Oksuzoglu E, Temiz-Arpaci O, Tekiner-Gulbas B, Eroglu H, Sen G, Alper S, Yildiz I, Diril N, Aki-Sener E, Yalcin I. A study on the genotoxic activities of some new benzoxazoles. Med Chem Res 2007. [DOI: 10.1007/s00044-007-9005-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Hegde VS, Kolavi GD, Lamani RS, Khazi IAM. Dimethyldithioimidocarbonates-Mediated Heterocyclizations: Synthesis of Imidazolidines and Benzheterocycles as Potent Antitubercular Agents. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500601088721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Vinayak S. Hegde
- a Department of Chemistry , Karnatak University , Dharwad , India
| | | | - Ravi S. Lamani
- a Department of Chemistry , Karnatak University , Dharwad , India
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Tekiner-Gulbas B, Temiz-Arpaci O, Yildiz I, Altanlar N. Synthesis and in vitro antimicrobial activity of new 2-[p-substituted-benzyl]-5-[substituted-carbonylamino]benzoxazoles. Eur J Med Chem 2007; 42:1293-9. [PMID: 17337097 DOI: 10.1016/j.ejmech.2007.01.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2006] [Revised: 01/10/2007] [Accepted: 01/12/2007] [Indexed: 10/23/2022]
Abstract
Some new 2-(benzyl/p-chlorobenzyl)-5-[(substituted-thienyl/phenyl/phenylthiomethyl/benzyl)carbonylamino]benzoxazole derivatives have been synthesized by reacting 5-amino-2-(benzyl/p-chlorobenzyl)benzoxazoles with appropriate carboxylic acid chlorides. The structures of the synthesized compounds were confirmed by IR, (1)H NMR and MASS spectral data. In vitro antimicrobial activities of the compounds were investigated using twofold serial dilution technique against different two Gram-positive, two Gram-negative bacteria and three Candida spp. in comparison with standard drugs. Microbiological results indicated that the newly synthesized 2-(benzyl/p-chlorobenzyl)-5-[(substituted-thienyl/phenyl/phenylthiomethyl/benzyl)carbonylamino]benzoxazole derivatives (3-12) possessed a broad spectrum of activity having MIC values of 6.25-100 microg/ml against the tested microorganisms. Especially, with an MIC value of 6.25 microg/ml, 2-(p-chlorophenyl)-5-[(2,5-dimethylphenyl)carbonylamino]benzoxazole 4 displayed the same activity against Candida albicans as the standard drug clotrimazole.
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Affiliation(s)
- Betul Tekiner-Gulbas
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, TR-06100 Tandogan, Ankara, Turkey
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41
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42
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Vinsova J, Cermakova K, Tomeckova A, Ceckova M, Jampilek J, Cermak P, Kunes J, Dolezal M, Staud F. Synthesis and antimicrobial evaluation of new 2-substituted 5,7-di-tert-butylbenzoxazoles. Bioorg Med Chem 2006; 14:5850-65. [PMID: 16784871 DOI: 10.1016/j.bmc.2006.05.030] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2006] [Revised: 05/09/2006] [Accepted: 05/15/2006] [Indexed: 11/26/2022]
Abstract
Various synthetic pathways of the 30 novel 2-substituted 5,7-di-tert-butylbenzoxazoles as new potential antimicrobial drugs are discussed. The 28 intermediates are described as well. The compounds were characterized by 1H and 13C NMR spectra, MS spectra, IR/UV spectra and by means of CHN analysis. The purity of the final compounds was checked by HPLC and their lipophilicity (log K) was also determined by means of RP-HPLC. In the present study, the correlation between RP-HPLC retention parameter log K (the logarithm of capacity factor K) and various calculated log P data is shown. The target compounds were tested for their in vitro antimycobacterial activity. Several compounds showed antituberculotic activity comparable with or higher than the standard isoniazide. In vitro cytotoxicity testing of the most active benzoxazoles and isoniazide as a reference drug was performed using MTT assay and compared with isoniazide as a reference drug. Structure-activity relationships among the chemical structures, the physical properties and the biological activities of the evaluated compounds are discussed in the article.
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Affiliation(s)
- Jarmila Vinsova
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, 500 05 Hradec Kralove, Czech Republic.
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Ponnala S, Prasad Sahu D. Iodine‐Mediated Synthesis of 2‐Arylbenzoxazoles, 2‐Arylbenzimidazoles, and 1,3,5‐Trisubstituted Pyrazoles. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910600638879] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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44
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45
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Mobinikhaledi A, Foroughifar N, Fallah M. Synthesis of Some N 1-(3-Hydroxy-2-pyridyl)benzamides. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/10426500500270032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - N. Foroughifar
- a Department of Chemistry , University of Arak , Arak , Iran
| | - M. Fallah
- a Department of Chemistry , University of Arak , Arak , Iran
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Mobinikhaledi A, Forughifar N, Shariatzadeh SM, Fallah M. SYNTHESIS AND ANTIBACTERIAL ACTIVITY OF SOME N-(3-HYDROXY-2-PYRIDYL) BENZAMIDES. HETEROCYCL COMMUN 2006. [DOI: 10.1515/hc.2006.12.6.427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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47
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Ata A, M. Youssef A, M. Mohamed H, Czezowski C, S. Abd-El-Aziz A. Synthesis and Biological Evaluation of Benzothiazole Derivatives of Pyrimidines, Acrylonitriles, and Coumarins. HETEROCYCLES 2006; 68:347. [DOI: 10.3987/com-05-10609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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48
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Guzow K, Zielińska J, Mazurkiewicz K, Karolczak J, Wiczk W. Influence of substituents in the phenyl ring on photophysical properties of 3-[2-(phenyl)benzoxazol-5-yl]alanine derivatives. J Photochem Photobiol A Chem 2005. [DOI: 10.1016/j.jphotochem.2005.04.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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49
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Highly lipophilic benzoxazoles with potential antibacterial activity. Molecules 2005; 10:783-93. [PMID: 18007347 PMCID: PMC6147629 DOI: 10.3390/10070783] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2004] [Revised: 03/04/2005] [Accepted: 03/10/2005] [Indexed: 11/17/2022] Open
Abstract
A series of lipophilic 2-substituted 5,7-di-tert-butylbenzoxazoles was prepared in average yields by the reaction of 3,5-di-tert-butyl-1,2-benzoquinone with amino acids and dipeptides bearing N-terminal glycine. Dipeptides having other N-terminal amino acids undergo oxidative deamination. 5,7-Di-tert-butylbenzoxazoles have shown activity against Mycobacterium tuberculosis and some nontuberculous strains where isoniazid has been inactive. Antifungal activity was mediocre.
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50
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Temiz-Arpaci O, Ozdemir A, Yalçin I, Yildiz I, Aki-Sener E, Altanlar N. Synthesis and Antimicrobial Activity of Some 5-[2-(Morpholin-4-yl)acetamido] and/or 5-[2-(4-Substituted piperazin-1-yl)acetamido]-2-(p-substituted phenyl)benzoxazoles. Arch Pharm (Weinheim) 2005; 338:105-11. [PMID: 15765492 DOI: 10.1002/ardp.200400923] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In this study, a series of twelve novel 5-[2-(morpholin-4-yl)acetamido] and/or 5-[2-(4-substituted pip-erazine-1-yl)acetamido]-2-(p-substituted phenyl]benzoxazole derivatives have been synthesized and their structures were confirmed by IR, (1)H NMR, and mass spectral data. These compounds were prepared by reacting 5-(2-chloroacetamido)-2-(4-p-substituted-phenyl)benzoxazoles, which were obtained by using 5-amino-2-[p-substituted-phenyl]benzoxazoles with chloroacetyl chloride, in the presence of morpholine or 1-substituted piperazines. All synthesized compounds 3-14 were tested by using the method of twofold serial dilution technique for in vitro activities against certain strains of Gram-positive, Gram-negative bacteria as well as the yeasts Candida albicans, Candida krusei, and Candida glabrata in comparison with standard drugs. Microbiological results showed that the newly synthesized compounds possessed a broad spectrum of activity, showing MIC values of 3.12-50 mug/mL against the Candida species.
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Affiliation(s)
- Ozlem Temiz-Arpaci
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey
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