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Bai YB, Zhang AL, Tang JJ, Gao JM. Synthesis and antifungal activity of 2-chloromethyl-1H-benzimidazole derivatives against phytopathogenic fungi in vitro. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:2789-2795. [PMID: 23419161 DOI: 10.1021/jf3053934] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A series of 35 benzimidazole derivatives were synthesized from 2-chloromethyl-1H-benzimidazole in good yields. Their structures were characterized by (1)H and (13)C NMR and HRESIMS. Antifungal activities of all of the synthesized compounds were evaluated against five phytopathogens fungi (Cytospora sp., Colletotrichum gloeosporioides, Botrytis cinerea, Alternaria solani, and Fusarium solani) using the mycelium growth rate method. Compound 4m displayed strong growth inhibition of C. gloeosporioides, A. solani, and F. solani with IC50 of 20.76, 27.58, and 18.60 μg/mL, respectively. Selective inhibition of B. cinerea instead of the other fungal pathogenes was observed with 7f (IC50 of 13.36 μg/mL), comparable to that of positive control, a commercial agricultural fungicide hymexazol (IC50 of 8.92 μg/mL). Compound 5b exhibited remarkable antifungal properties against Cytospora sp., C. gloeosporioides, B. cinerea, and F. solani with IC50 values of 30.97, 11.38, 57.71, and 40.15 μg/mL, respectively; among the target fungi, 5b was the most active compound and superior to the reference against C. gloeosporioides alone. Structure-activity relationship (SAR) data of these compounds are as follows: (1) introduction of the chlorine atom on para-position in the benzene ring help to increase activity (4f vs 4c; 7f vs 7n), (2) the sulfonyl group is critical for the inhibition of C. gloeosporioides (5b and 5c vs 5a), and (3) the unsubstituted benzene ring improve activity (4m vs 4n, 4e and 4a). Thus, compounds 5b, 4m, and 7f emerged as a new leading structure for the development of new fungicides.
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Affiliation(s)
- Yu-Bin Bai
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, College of Science, Northwest A&F University , Yangling, Shaanxi 712100, People's Republic of China
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52
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Hamzaoui S, Hamden K, Ben Salem A, Mourer M, Regnouf-De-Vains JB, Kossentini M. Synthesis and Evaluation of 1,ω-Bis(1,2,3,5-thiatriazol-5-yl)alkanes asIn VitroandIn Vivoα-Amylase and Lipase Inhibitors. Arch Pharm (Weinheim) 2013; 346:321-9. [DOI: 10.1002/ardp.201200312] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 12/24/2012] [Accepted: 01/18/2013] [Indexed: 11/07/2022]
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53
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El-Nezhawy AOH, Biuomy AR, Hassan FS, Ismaiel AK, Omar HA. Design, synthesis and pharmacological evaluation of omeprazole-like agents with anti-inflammatory activity. Bioorg Med Chem 2013; 21:1661-70. [PMID: 23453216 DOI: 10.1016/j.bmc.2013.01.070] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 01/19/2013] [Accepted: 01/28/2013] [Indexed: 01/08/2023]
Abstract
A new series of novel benzimidazole derivatives containing substituted pyrid-2-yl moiety and polyhydroxy sugar conjugated to the N-benzimidazole moiety has been synthesized and evaluated as orally bioavailable anti-inflammatory agents with anti-ulcerogenic activity. The anti-inflammatory and anti-ulcerogenic activities of these compounds were compared to diclofenac and omeprazole, respectively. In carrageenan-induced paw oedema assay, 2-methyl-N-((3,4-dimethoxypyridin-2-yl)methyl)-1H-benzimidazol-5-amine (12d) and 1-(1,2,3,5-tetrahydroxy-α-D-mannofuranose)-5-(((3,4-dimethoxypyridin-2yl)methyl)amino)-2-methyl-1H-benzimidazole (15d) displayed dose-dependent anti-inflammatory activities by decreasing the inflammation by 62% and 72%, respectively which is comparable to that of diclofenac (73%). In contrast to diclofenac, the anti-inflammatory activity of these compounds was not only free from any side effects on the gastric mucosa but also showed significant anti-ulcerogenic activity in rat pyloric ligation and ethanol-induced gastric ulcer models similar to that of omeprazole. Together, these findings suggest that 12d and 15d are potent anti-inflammatory agents with concurrent anti-ulcerogenic activity and support its clinical promise as a component of therapeutic strategies for inflammation, for which the gastric side effects are always a major limitation.
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Affiliation(s)
- Ahmed O H El-Nezhawy
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, Saudi Arabia.
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54
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Omar MA, Shaker YM, Galal SA, Ali MM, Kerwin SM, Li J, Tokuda H, Ramadan RA, El Diwani HI. Synthesis and docking studies of novel antitumor benzimidazoles. Bioorg Med Chem 2012; 20:6989-7001. [PMID: 23123017 DOI: 10.1016/j.bmc.2012.10.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 10/11/2012] [Indexed: 11/27/2022]
Abstract
In this work, the benzimidazole-pyrrole conjugates 6a-h and benzimidazole-tetracycles conjugates 12-14 were prepared. The cytotoxicity of the compounds 3, 4a-h, 6a-h, 8, 10 and 12-14 was tested against lung cancer cell line A549. Compound 6b exhibited higher activity than the bis-benzoxazole natural product (UK-1), the standard. The tested 4g,h, 6a-h, 10 and 12-14 exhibited remarkable cytotoxicity activity against breast cancer cell line MCF-7 with higher activity than tamoxifen. Furthermore, compound 4h was found to be also more potent than doxurubicin. The antitumor promotion activity of synthesized compounds 4g,h, 6a-h, 10 and 12-14 has been estimated by studying their possible inhibitory effects on EBV-EA activation induced by 12-O-tetradecanoylphorbol-13-acetate (TPA). Among the studied compounds, the inhibitory activities of compounds 8, 13 and 14 demonstrated strong inhibitory effects on the Epstein-Barr virus early antigen (EBV-EA) activation without showing any cytotoxicity on the Raji cells and their effects being stronger than that of a representative control, oleanolic acid. Moreover, the molecular docking of the new compounds into plasminogen activator (uPA) receptor has been in correlation with the antitumor activity. All synthesized compounds 3, 4a-h, 6a-h, 8, 10 and 12-14 were docked into same groove of the binding site of the native co-crystalized (4-iodobenzo[b]thiophene-2-carboxamidine) ligand (PDB code:1c5x) for activity explaination. Compounds 4h, 6b and 13, giving the best docking results, were further studied to estimate their effect on the level of uPA using AssayMax human urokinase (uPA) ELISA kit. In case of A549 cell line, compound 6 exhibited similar activity to MMC, and for MCF-7 cell line, compound 4h exhibited similar activity to doxorubicin, in inhibiting the expression of uPA.
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Affiliation(s)
- Mohamed A Omar
- Chemistry of Natural and Microbial Products Department, National Research Center, Dokki, 12311 Cairo, Egypt
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55
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Hamza MF, Mahfouz MG, Abdel-Rahman AAH. Adsorption of Uranium (VI) Ions on Hydrazinyl Amine and 1,3,4-Thiadiazol-2(3 H)-thion Chelating Resins. J DISPER SCI TECHNOL 2012. [DOI: 10.1080/01932691.2011.623552] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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56
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Abdul Rahim AS, Salhimi SM, Arumugam N, Pin LC, Yee NS, Muttiah NN, Keat WB, Abd Hamid S, Osman H, Mat IB. Microwave-assisted synthesis of sec/tert-butyl 2-arylbenzimidazoles and their unexpected antiproliferative activity towards ER negative breast cancer cells. J Enzyme Inhib Med Chem 2012; 28:1255-60. [PMID: 23061895 DOI: 10.3109/14756366.2012.729828] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A new series of N-sec/tert-butyl 2-arylbenzimidazole derivatives was synthesised in 85-96% yields within 2-3.5 min by condensing ethyl 3-amino-4-butylamino benzoate with various substituted metabisulfite adducts of benzaldehyde under focused microwave irradiation. The benzimidazole analogues were characterised using (1)H NMR, (13)C NMR, high resolution MS and melting points. Evaluation of antiproliferative activity of the benzimidazole analogues against MCF-7 and MDA-MB-231 revealed several compounds with unexpected selective inhibitions of MDA-MB-231 in micromolar range. All analogues were found inactive towards MCF-7. The most potent inhibition against MDA-MB-231 human breast cancer cell line came from the unsubstituted 2-phenylbenzimidazole 10a.
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57
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Bansal Y, Silakari O. The therapeutic journey of benzimidazoles: a review. Bioorg Med Chem 2012; 20:6208-36. [PMID: 23031649 DOI: 10.1016/j.bmc.2012.09.013] [Citation(s) in RCA: 519] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 09/07/2012] [Accepted: 09/07/2012] [Indexed: 01/03/2023]
Abstract
Presence of benzimidazole nucleus in numerous categories of therapeutic agents such as antimicrobials, antivirals, antiparasites, anticancer, anti-inflammatory, antioxidants, proton pump inhibitors, antihypertensives, anticoagulants, immunomodulators, hormone modulators, CNS stimulants as well as depressants, lipid level modulators, antidiabetics, etc. has made it an indispensable anchor for development of new therapeutic agents. Varied substitutents around the benzimidazole nucleus have provided a wide spectrum of biological activities. Importance of this nucleus in some activities like, Angiotensin I (AT(1)) receptor antagonism and proton-pump inhibition is reviewed separately in literature. Even some very short reviews on biological importance of this nucleus are also known in literature. However, owing to fast development of new drugs possessing benzimidazole nucleus many research reports are generated in short span of time. So, there is a need to couple the latest information with the earlier information to understand the current status of benzimidazole nucleus in medicinal chemistry research. In the present review, various derivatives of benzimidazole with different pharmacological activities are described on the basis of substitution pattern around the nucleus with an aim to help medicinal chemists for developing an SAR on benzimidazole derived compounds for each activity. This discussion will further help in the development of novel benzimidazole compounds.
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Affiliation(s)
- Yogita Bansal
- Molecular Modelling Lab, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab 147002, India
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58
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Rashid M, Husain A, Mishra R. Synthesis of benzimidazoles bearing oxadiazole nucleus as anticancer agents. Eur J Med Chem 2012; 54:855-66. [DOI: 10.1016/j.ejmech.2012.04.027] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 04/15/2012] [Accepted: 04/18/2012] [Indexed: 11/29/2022]
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59
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1-(1H-Benzimidazol-2-yl)-3-[5-(trichloromethyl)-1,3,4-oxadiazol-2-yl]propan-1-one. MOLBANK 2012. [DOI: 10.3390/m766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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60
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Husain A, Rashid M, Shaharyar M, Siddiqui AA, Mishra R. Benzimidazole clubbed with triazolo-thiadiazoles and triazolo-thiadiazines: new anticancer agents. Eur J Med Chem 2012; 62:785-98. [PMID: 23333063 DOI: 10.1016/j.ejmech.2012.07.011] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 07/02/2012] [Accepted: 07/05/2012] [Indexed: 11/16/2022]
Abstract
Two series of Benzimidazole clubbed with triazolo-thiadiazoles (5a-q, 5r, 5s and 5x-a(1)) and triazolo-thiadiazines (5t-w) were synthesized with an aim to produce promising anticancer agents. In vitro anticancer activities of synthesized compounds were investigated at the National Cancer Institute (NCI) against NCI 60 cell line panel; results showed good to remarkable broad-spectrum anticancer activity. Among them, the compound 5h (NCS: 760452, 1-(1H-benzo [d] imidazol-2-yl)-3-(6-(2,4-dichlorophenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-yl) propan-1-one) exhibited significant growth inhibition with GI50 values ranging from 0.20 to 2.58 μM and found superior selectivity for the leukemia cell lines and further screened at 10-fold dilutions of five different concentrations (0.01, 0.1, 1, 10 and 100 μM). The 5h may possibly be used as lead compound for developing new anticancer agents.
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Affiliation(s)
- Asif Husain
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi 110062, India.
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61
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Pharmacological evaluation of benzimidazole derivatives with potential antiviral and antitumor activity. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0569-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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62
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63
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Taher AT, Khalil NA, Ahmed EM. Synthesis of novel isatin-thiazoline and isatin-benzimidazole conjugates as anti-breast cancer agents. Arch Pharm Res 2011; 34:1615-21. [PMID: 22076761 DOI: 10.1007/s12272-011-1005-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 06/15/2011] [Accepted: 06/21/2011] [Indexed: 11/30/2022]
Abstract
A series of new isatin-thiazoline 3a-h and isatin-benzimidazole 4a-h derivatives were synthesized via condensation of isatin Mannich bases 2a-h with either 2-aminothiazoline or 2-aminobenzimidazole. The structures of the newly synthesized compounds were characterized by spectral data. The anti-breast cancer activity of some of the synthesized compounds was assessed in the MCF-7 human breast cancer cell line. The results showed that compounds 4b, 4d and 4g possess significant antiproliferative activity against MCF-7 cells.
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Affiliation(s)
- Azza T Taher
- Department of Organic Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
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64
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Guo H, Zhang G, Zhang T, He X, Wu Z, Xiao Y, Pan Y, Qiu G, Liu P, Hu X. Synthesis, characterization and biological evaluation of some 16β-azolyl-3β-amino-5α-androstane derivatives as potential anticancer agents. Eur J Med Chem 2011; 46:3662-74. [DOI: 10.1016/j.ejmech.2011.05.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 05/10/2011] [Accepted: 05/14/2011] [Indexed: 12/22/2022]
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65
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Kashyap SJ, Garg VK, Sharma PK, Kumar N, Dudhe R, Gupta JK. Thiazoles: having diverse biological activities. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9685-2] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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66
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Romero-Castro A, León-Rivera I, Ávila-Rojas LC, Navarrete-Vázquez G, Nieto-Rodríguez A. Synthesis and preliminary evaluation of selected 2-aryl-5(6)-nitro- 1H-benzimidazole derivatives as potential anticancer agents. Arch Pharm Res 2011; 34:181-9. [DOI: 10.1007/s12272-011-0201-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 07/23/2010] [Accepted: 07/27/2010] [Indexed: 11/27/2022]
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67
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Mochona B, Le L, Gangapuram M, Mateeva N, Ardley T, Redda KK. Synthesis of 2-(N-Benzylpyrrolyl)-benzimidazoles Using Polyphosphoric Acid Prompted Cyclocondensation. J Heterocycl Chem 2010; 47:1367-1371. [PMID: 21423826 PMCID: PMC3058240 DOI: 10.1002/jhet.480] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Synthesis of a series of 2-substituted benzimidazoles was carried out for screening anti-inflammatory activities. 2-(N-benzylpyrrolyl)-benzimidazoles 9a-k were synthesized from N-benzyl-2-pyrrole carboxylic acids 8a-d and 4-substituted-1,2-phenylenediamines by cyclocondensation utilizing polyphosphoric acid (PPA) as condensing agent. The N-benzyl-2-pyrrole carboxylic acids were prepared by standard method of N-benzylation of 2-pyrrole carboxylate using NaH/DMF and appropriately substituted benzyl halides followed by alkaline hydrolysis.
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Affiliation(s)
- Bereket Mochona
- Department of Chemistry, College of Arts and Sciences, Florida A&M University, Tallahassee, Florida 32307
| | - Laine Le
- Department of Chemistry, College of Arts and Sciences, Florida A&M University, Tallahassee, Florida 32307
| | - Madhavi Gangapuram
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida 32307
| | - Nelly Mateeva
- Department of Chemistry, College of Arts and Sciences, Florida A&M University, Tallahassee, Florida 32307
| | - Tiffany Ardley
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida 32307
| | - Kinfe K. Redda
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida 32307
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68
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Catalán M, Álvarez-Lueje A, Bollo S. Electrochemistry of interaction of 2-(2-nitrophenyl)-benzimidazole derivatives with DNA. Bioelectrochemistry 2010; 79:162-7. [DOI: 10.1016/j.bioelechem.2010.02.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2009] [Revised: 09/22/2009] [Accepted: 02/12/2010] [Indexed: 10/19/2022]
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69
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Mavrova AT, Vuchev D, Anichina K, Vassilev N. Synthesis, antitrichinnellosis and antiprotozoal activity of some novel thieno[2,3-d]pyrimidin-4(3H)-ones containing benzimidazole ring. Eur J Med Chem 2010; 45:5856-61. [PMID: 20950896 DOI: 10.1016/j.ejmech.2010.09.050] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 09/20/2010] [Accepted: 09/21/2010] [Indexed: 10/19/2022]
Abstract
Some novel thieno[2,3-d]pyrimidin-4(3H)-ones containing benzimidazol-2-yl-thioethyl- and benzimidazol-2-yl-methanethioethyl moiety in second position of the pyrimidine ring were synthesized in order to determine their antitrichinellosis and antiprotozoal effects. The structures of the compounds were confirmed by IR, (1)H NMR and elemental analysis. The antiparasitic screening showed that the benzimidazole derivatives of thieno[2,3-d]pyrimidin-4(3H)-ones exhibited higher activity against Trichinella spiralis in vitro in comparison albendazole. The most active compound, 2-[2-(5-nitro-1H-benzimidazol-1-yl)ethyl]-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3H)-one 22 revealed 95% activity at a dosage of 5 mg/kg mw after 24 h, while compounds 8 and 10 applied at the same dose showed efficacy of 90% after 48 h. The compound 2-{2-[(5(6)-nitro-1H-benzimidazol-2-yl)thio]ethyl}-5,6,7,8-tetrahydro[1]-benzothieno[2,3-d]pyrimidin-4(3H)-one 11 exhibited 90% efficacy after 24 h. The pharmaco-therapeutic study in vivo on invaded with Lamblia muris white mice showed 100% effectiveness of the compounds 8, 10, 11, 13-15 and 22, 23 after five-days-treatment course.
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Affiliation(s)
- Anelia Ts Mavrova
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8Kliment Ohridski Blvd., 1756 Sofia, Bulgaria.
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70
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Rashad AE, El-Sayed WA, Mohamed AM, Ali MM. Synthesis of New Quinoline Derivatives as Inhibitors of Human Tumor Cells Growth. Arch Pharm (Weinheim) 2010; 343:440-8. [DOI: 10.1002/ardp.201000002] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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71
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Galal SA, Abdelsamie AS, Rodriguez ML, Kerwin SM, El Diwani HI. Synthesis and studying the antitumor activity of novel 5-(2-methylbenzimidazol-5-yl)-1,3,4-oxadiazole-2(3H)-thiones. ACTA ACUST UNITED AC 2010. [DOI: 10.5155/eurjchem.1.2.67-72.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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72
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Abdel-Mohsen HT, Ragab FA, Ramla MM, El Diwani HI. Novel benzimidazole–pyrimidine conjugates as potent antitumor agents. Eur J Med Chem 2010; 45:2336-44. [DOI: 10.1016/j.ejmech.2010.02.011] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2009] [Revised: 01/27/2010] [Accepted: 02/02/2010] [Indexed: 10/19/2022]
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73
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Experimental and Theoretical Determination of the Limiting Partial Molar Volume of Indole in CCl4, Tetrahydrofuran and Acetonitrile at 293.15 K: A Comparative Study with Benzimidazole and Benzothiophene. J SOLUTION CHEM 2010. [DOI: 10.1007/s10953-010-9511-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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74
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Shaharyar M, Abdullah M, Bakht M, Majeed J. Pyrazoline bearing benzimidazoles: Search for anticancer agent. Eur J Med Chem 2010; 45:114-9. [DOI: 10.1016/j.ejmech.2009.09.032] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Revised: 09/08/2009] [Accepted: 09/17/2009] [Indexed: 11/24/2022]
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75
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Synthesis and cytotoxic evaluation of novel 2-(4-(2,2,2-trifluoroethoxy)-3-methylpyridin-2-ylthio)-1H-benzo[d]imidazole derivatives. Arch Pharm Res 2009; 32:1335-43. [DOI: 10.1007/s12272-009-2000-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 08/27/2009] [Accepted: 08/30/2009] [Indexed: 10/20/2022]
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76
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Yeap CS, Kargar H, Kia R, Jamshidvand A, Fun HK. 2-(1H-Benzoimidazol-2-yl)-6-ethoxy-phenol. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o745-6. [PMID: 21582478 PMCID: PMC2969036 DOI: 10.1107/s1600536809008071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Accepted: 03/05/2009] [Indexed: 11/13/2022]
Abstract
The title Schiff base compound, C15H14N2O2, consists of two crystallographically independent molecules, A and B. Molecule A is almost planar, whereas molecule B is slightly twisted, the dihedral angles between the benzimidazole group and the benzene rings being 2.65 (12) and 13.17 (15)°, respectively. The methyl group of molecule B is disordered over two positions, with a refined site-occupancy ratio of 0.581 (7):0.419 (7). In each molecule, intramolecular O—H⋯N hydrogen bonds generate S(6) ring motifs. In the crystal structure, both types of molecules are linked via intermolecular bifurcated N—H⋯O hydrogen bonds into one-dimensional extended chains along [010] and form R12(5) ring motifs. The crystal structure is further stabilized by intermolecular C—H⋯π and π–π interactions [centroid–centroid distances = 3.4758 (16)–3.596 (2) Å].
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Kia R, Fun HK, Kargar H. 4-[1-(4-Cyano-benz-yl)-1H-benzimidazol-2-yl]benzonitrile. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o660-1. [PMID: 21582406 PMCID: PMC2969064 DOI: 10.1107/s1600536809006989] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Accepted: 02/25/2009] [Indexed: 11/23/2022]
Abstract
In the title compound, C22H14N4, a new substituted benzimidazole, three intermolecular C—H⋯N interactions link neighbouring molecules into different dimers with R22(12), R22(8) and R22(24) ring motifs. A fourth C—H⋯N interaction links neighbouring molecules along the c axis. There is also a short intermolecular contact between the azomethine (C=N) segment of the benzimidazole ring and one of the C atoms of a neighbouring benzene ring [N⋯C = 3.191 (5), C⋯C = 3.364 (6) Å], which links the molecules along the a axis. The two cyanobenzene rings are almost perpendicular to each other, with an interplanar angle of 87.70 (7)°. The dihedral angles between the mean planes of the benzimidazole ring and the two outer benzene rings are 36.27 (16) and 86.70 (16)°. In the crystal structure, molecules are stacked down the a axis with centroid–centroid distances of 3.906 (2)–3.912 (2) Å and interplanar distances of 3.5040 (17) and 3.6235 (17) Å.
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78
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Sakamoto M, Nakai T, Fukutomi K, Yanagisawa H, Kawasaki T. Synthesis of 1,2,4-Triazin-5-ones through [4+2] Cycloaddition of 1,2,4-Triaza-1,3-dienes with Diphenylketene. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(d)28] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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79
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Hranjec M, Starčević K, Piantanida I, Kralj M, Marjanović M, Hasani M, Westman G, Karminski-Zamola G. Synthesis, antitumor evaluation and DNA binding studies of novel amidino-benzimidazolyl substituted derivatives of furyl-phenyl- and thienyl-phenyl-acrylates, naphthofurans and naphthothiophenes. Eur J Med Chem 2008; 43:2877-90. [DOI: 10.1016/j.ejmech.2008.02.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2007] [Revised: 01/30/2008] [Accepted: 02/08/2008] [Indexed: 10/22/2022]
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80
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Yang XD, Li L, Zhang HB. Ligand-Free Copper-Catalyzed Arylation of Imidazole andN,N′-Carbonyldiimidazole, and Microwave-Assisted Synthesis ofN-Aryl-1H-imidazoles. Helv Chim Acta 2008. [DOI: 10.1002/hlca.200890156] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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81
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Starcević K, Kralj M, Ester K, Sabol I, Grce M, Pavelić K, Karminski-Zamola G. Synthesis, antiviral and antitumor activity of 2-substituted-5-amidino-benzimidazoles. Bioorg Med Chem 2007; 15:4419-26. [PMID: 17482821 DOI: 10.1016/j.bmc.2007.04.032] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 04/12/2007] [Accepted: 04/17/2007] [Indexed: 10/23/2022]
Abstract
We have prepared a set of heterocyclic benzimidazole derivatives bearing amidino substituents at C-5 of benzimidazole ring, by introducing various heterocyclic nuclei (pyridine, N-methyl-pyrrole or imidazole) at C-2, and evaluated their antitumor and antiviral activities. The most pronounced antiproliferative activity was shown with compounds 6 and 9, having imidazolinylamidino-substituent. Interestingly, all compounds show noticeable selectivity toward breast cancer cell line MCF-7. The most distinct and selective antiviral activity toward coxsackieviruses and echoviruses was observed with compounds having pyridine ring at C-2. Especially interesting was fairly strong activity of 4 and 8 toward adenoviruses, which could be considered as leads against adenoviral replication.
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Affiliation(s)
- Kristina Starcević
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, PO Box 177, HR-10000 Zagreb, Croatia
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82
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Ramla MM, Omar MA, Tokuda H, El-Diwani HI. Synthesis and inhibitory activity of new benzimidazole derivatives against Burkitt's lymphoma promotion. Bioorg Med Chem 2007; 15:6489-96. [PMID: 17643992 DOI: 10.1016/j.bmc.2007.04.010] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2006] [Revised: 04/02/2007] [Accepted: 04/04/2007] [Indexed: 11/27/2022]
Abstract
As a continuation to our previous work concerning antitumor benzimidazoles, we have synthesized series of new derivatives of 2-(1-benzyl-2-methyl-1H-benzimidazol-5-ylimino)-3-(substituted)-thiazolidin-4-one (6a-e), 3-(2-methyl-1H-benzimidazol-5-yl)-2-substituted-thiazolidin-4-one (9a-f) and we have studied their inhibitory activity against the Epstein-Barr virus-early antigen (EBV-EA) activation introduced by 12-O-tetradecanoylphorbol-13-acetate (TPA). Compound 6d was found to be significantly active and compounds 5a and 6e were also active.
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Affiliation(s)
- Mostafa M Ramla
- Chemistry of Natural and Microbial Products Department, National Research Center, Dokki, Cairo, Egypt.
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83
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Karminski-Zamola G, Starcevic K, Kralj M, Ester K. Synthesis and Cytostatic Evaluation of Pyridopyrimidobenzimidazole Derivatives. HETEROCYCLES 2007. [DOI: 10.3987/com-06-10977] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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