Metal-free cross-dehydrogenative coupling of benzimidazoles with aldehydes to N-acylbenzimidazoles
摘要:
A novel and direct cross-dehydrogenative coupling (CDC) between benzimidazoles with aldehydes promoted by di-tert-butyl peroxide (DTBP) was developed. The reactions generated the corresponding N-acylbenzimidazoles in good yields under metal-free conditions. This method has broad substrate scope and high efficiency. (C) 2014 Elsevier Ltd. All rights reserved.
1-[(2E)-3-Phenylprop-2-enoyl]-1H-benzimidazoles as anticancer agents: synthesis, crystal structure analysis and binding studies of the most potent anticancer molecule with serum albumin
作者:Veerendra Kumar A. Kalalbandi、J. Seetharamappa
DOI:10.1039/c5md00293a
日期:——
The anticancer activity of 1H-benzimidazoles was studied against NCI 60 cell panel. Compound3fshowed antitumor activity with good to moderate selectivity ratio. Mechanism of interaction of3fwith protein was studied by spectral methods.
Synthesis, crystal studies, anti-tuberculosis and cytotoxic studies of 1-[(2E)-3-phenylprop-2-enoyl]-1H-benzimidazole derivatives
作者:Veerendra Kumar A. Kalalbandi、J. Seetharamappa、Umesha Katrahalli、Kishore G. Bhat
DOI:10.1016/j.ejmech.2014.04.017
日期:2014.5
Series of 1-[(2E)-3-phenylprop-2-enoyl]-1H-benzimidazole derivatives were synthesized and characterized by spectral methods. Among 21 derivatives, single crystals of 3a and 3l were grown and their structural parameters were evaluated. Newly synthesized compounds were screened for anti-tubercular activity and the MIC was determined against Mycobacterium tuberculosis H37Rv by Microplate Alamar Blue Assay (MABA) method. Majority of the compounds exhibited a promising inhibition of M. tuberculosis and the molecules functionalized with electron-donating groups at C-2 carbon of benzimidazole moiety were found to be more active in inhibiting M. tuberculosis. Further, more promising compounds viz., 3b, 3i and 3l were tested for their cytotoxic activity. Compound 3l was found to display excellent activity (IC50 < 10 mu g mL(-1)) with 100% cell lysis at 30 mu g mL(-1) concentration against A549 (Human lung carcinoma) and 8E5 (Human; Acute Lymphoblastic Leukemia) cell lines. (c) 2014 Elsevier Masson SAS. All rights reserved.
Metal-free cross-dehydrogenative coupling of benzimidazoles with aldehydes to N-acylbenzimidazoles
作者:Lin Yu、Min Wang、Lei Wang
DOI:10.1016/j.tet.2014.07.009
日期:2014.9
A novel and direct cross-dehydrogenative coupling (CDC) between benzimidazoles with aldehydes promoted by di-tert-butyl peroxide (DTBP) was developed. The reactions generated the corresponding N-acylbenzimidazoles in good yields under metal-free conditions. This method has broad substrate scope and high efficiency. (C) 2014 Elsevier Ltd. All rights reserved.