Benzimidazole based mesogenic Schiff-bases: Synthesis and characterization
Two homologous series of mesogenic Schiff-bases, N-4-((alkoxy)-(phenyl-3-hydroxy-4-(4-(5-methylbenzimidazol))-2-alkoxysalicylaldimine)benzoate (7a–d) and N-4′-(5-methyl-benzimidazole)-phenyl-4-alkoxysalicylaldimine (8a–d) incorporating benzimidazole moiety have been prepared and the molecular structures studied by FT-IR, NMR and ESI-MS spectrometry. Mesogenic behaviour was investigated by polarizing optical microscopy (POM), differential scanning calorimetry (DSC) and variable temperature powder X-ray diffraction (PXRD) techniques. Changing the spacer (ester-linked to non-ester linked) of the Schiff-base results in enhancement of thermal stability and phase transition temperature. The members of series-I show monotropic SmA while those of series-II reflect enantiotropic SmA mesomorphism. An electrochemical study of a representative Schiff base in each series (7d and 8c) showed an electrical band gap 1.26?eV and 1.22?eV respectively.
1-[4-(1H-Benzoimidazol-2-yl)-phenyl]-3-[4-(1H-benzoimidazol-2-yl)-phenyl] -urea derivatives as small molecule heparanase inhibitors
A novel class of 1-[4-(1H-benzoimidazol-2-yl)-phenyl]-3-[4-(1H- benzoimidazol-2-yl)-phenyl]-ureas are described as potent inhibitors of heparanase. Among them are 1,3-bis-[4-(1H-benzoimidazol-2-yl)-phenyl]-urea (7a) and 1,3-bis-[4-(5,6-dimethyl-1H-benzoimidazol-2-yl)-phenyl]-urea (7d), which displayed good heparanase inhibitory activity (IC50 0.075-0.27 μM). Compound 7a showed good efficacy in a B16 metastasis model.
Pan, Weitao,Miao, Hua-Quan,Xu, Yong-Jiang,Navarro, Elizabeth C.,Tonra, James R.,Corcoran, Erik,Lahiji, Armin,Kussie, Paul,Kiselyov, Alexander S.,Wong, Wai C.,Liu, Hu
p. 409 - 412
(2007/10/03)
Benzimidazole compounds for regulating IgE
This invention relates to a family of phenylbenzimidazole analogs, which are inhibitors of the IgE response to allergens. These compounds are useful in the treatment of allergy and/or asthma or any diseases where IgE is pathogenic.
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(2008/06/13)
Benzimidazole derivatives as modulators of IgE
This invention relates to a family of benzimidazole analogs, which are inhibitors of the IgF response to allergens. These compounds are useful in the treatment of allergy, asthma, or any diseases where IgE is pathogenic.
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(2008/06/13)
Benzimidazole compounds for regulating IgE
This invention relates to a family of phenylbenzimidazole analogs, which are inhibitors of the IgE response to allergens. These compounds are useful in the treatment of allergy and/or asthma or any diseases where IgE is pathogenic.
-
(2008/06/13)
Benzimidazole derivatives as modulators of IgE
This invention relates to a family of diacyl benzimidazole analogs, which are inhibitors of the IgE response to allergens. These compounds are useful in the treatment of allergy and/or asthma or any diseases where IgE is pathogenic.
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(2008/06/13)
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