- Reactions of 1-methylbenzimidazole derivatives with m-chloroperoxybenzoic acid
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Oxidation of seven 1-methylbenzimidazole (MBI) derivatives (with pKa's ranging from 1.6 to 6.0) was carried out with m-chloroperoxybenzoic acid and structures of the products formed were identified. (Condensed benzene moiety-hydroxylated)-2-(m-chlorobenzyloxy)-MBIs and 2-oxo-MBIs were obtained from MBIs with pKa's of more than 5.6 and about 3.3, respectively.
- Kaiya, Toyo,Aoyama, Shinsuke,Kohda, Kohfuku
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- SUBSTITUTED BENZIMIDAZOLONES AS ANTI-CANCER AGENTS
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The present invention relates to compounds of Formula I that function as inhibitors of BCL6 (B-cell lymphoma 6) activity: Formula (I) wherein X, R1, R2, and R3 are each as defined herein. The present invention also relates to processes for the preparation of these compounds, to pharmaceutical compositions comprising them, and to their use in the treatment of proliferative disorders, such as cancer, as well as other diseases or conditions in which BCL6activity is implicated.
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Paragraph 00262
(2020/06/10)
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- Achieving in Vivo Target Depletion through the Discovery and Optimization of Benzimidazolone BCL6 Degraders
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Deregulation of the transcriptional repressor BCL6 enables tumorigenesis of germinal center B-cells, and hence BCL6 has been proposed as a therapeutic target for the treatment of diffuse large B-cell lymphoma (DLBCL). Herein we report the discovery of a series of benzimidazolone inhibitors of the protein-protein interaction between BCL6 and its co-repressors. A subset of these inhibitors were found to cause rapid degradation of BCL6, and optimization of pharmacokinetic properties led to the discovery of 5-((5-chloro-2-((3R,5S)-4,4-difluoro-3,5-dimethylpiperidin-1-yl)pyrimidin-4-yl)amino)-3-(3-hydroxy-3-methylbutyl)-1-methyl-1,3-dihydro-2H-benzo[d]imidazol-2-one (CCT369260), which reduces BCL6 levels in a lymphoma xenograft mouse model following oral dosing.
- Bellenie, Benjamin R.,Cheung, Kwai-Ming J.,Varela, Ana,Pierrat, Olivier A.,Collie, Gavin W.,Box, Gary M.,Bright, Michael D.,Gowan, Sharon,Hayes, Angela,Rodrigues, Matthew J.,Shetty, Kartika N.,Carter, Michael,Davis, Owen A.,Henley, Alan T.,Innocenti, Paolo,Johnson, Louise D.,Liu, Manjuan,De Klerk, Selby,Le Bihan, Yann-Va?,Lloyd, Matthew G.,McAndrew, P. Craig,Shehu, Erald,Talbot, Rachel,Woodward, Hannah L.,Burke, Rosemary,Kirkin, Vladimir,Van Montfort, Rob L. M.,Raynaud, Florence I.,Rossanese, Olivia W.,Hoelder, Swen
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p. 4047 - 4068
(2020/04/20)
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- 2, 4 -DIAMINOPYRIMIDINE DERIVATIVES AS PROTEIN KINASE INHIBITORS
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The present invention relates to novel pyrimide derivatives of formula (I): that are useful as kinase inhibitors. More particularly, the present invention relates to novel pyrimidine compounds, methods for their preparation, pharmaceutical compositions containing these compounds and uses of these compounds in the treatment of proliferative disorders.
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- Syntheses and properties of 1-methyl-3-phenylaminobenzimidazolium salts, models of DNA adducts of N7-arylaminodeoxyguanosinium salt
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When arylaminating carcinogens are administered to cells, they mainly generate the C8-arylamino-2'-deoxyguanosine adduct in DNA. A mechanism for this was proposed in which N7-arylaminated 2'-deoxyguanosine acts as an intermediate; however, it remained unclear whether this is actually the case. To elucidate the mechanisms involved in the generation of this adduct, a series of 5-substituted 1-methylbenzimidazole derivatives were used as models of the imidazole moiety of 2'-deoxyguanosine. Syntheses of a series of 5-substituted (CH3, H, F, CF3, or NO2) 1-methyl-3-phenylaminobenzimidazolium salts (7) and their related compounds were carried out, and the chemical characteristics of these products were examined. Heating compound 7 at 80 °C for 48 h in H2O/MeOH provided 5-substituted 1-methyl-2-oxo-2,3-dihydrobenzimidazoles but only when this compound contained a CF3 or NO2 substituent. Compound 7 decomposed in alkaline media, and its rate of decomposition increased when this compound had a stronger electron-withdrawing substituent. The product obtained under these conditions was 4-substituted N1-methyl-2-phenylazoaniline. On the other hand, when 1-methyl-3-(4-nitrophenylamino)benzimidazolium salt was treated under the same conditions as described above, it generated a demethylated product, 1-(4-nitrophenylamino)benzimidazole, when heated in H2O/MeOH and N1-formyl-N1-methyl-2-phenylazoaniline when treated in alkaline media. When the chemical characteristics of 3-phenylamino and 3-amino groups were compared using 3-substituted 1-methyl-5-(trifluoromethyl)benzimidazoles, the 3-phenylamino derivative was found to be more reactive.
- Kaiya,Fujiwara,Kohda
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p. 993 - 1001
(2007/10/03)
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- Bicyclic heterocycles, the preparation thereof, and their use as pharmaceuticals
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The present invention relates to 5-membered heterocyclic condensed benzoderivatives of formula wherein Ra to Rc, A, X and Y are defined as in claim 1, the tautomers, stereoisomers, mixtures thereof and the salts thereof, particularly the physiologically acceptable salts thereof with inorganic or organic acids or bases which have valuable properties. The compounds of the above formula I wherein Rc denotes a cyano group are valuable intermediates for preparing the other compounds of formula I, and the compounds of the above formula I wherein Rc denotes one of the following amidino groups and the tautomers and stereoisomers thereof have valuable pharmacological properties, particularly an antithrombotic activity.
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