Structure−Activity Relationship of 4(5)-Aryl-2-amino-1H-imidazoles, N1-Substituted 2-Aminoimidazoles and Imidazo[1,2-a]pyrimidinium Salts as Inhibitors of Biofilm Formation by Salmonella Typhimurium and Pseudomonas aeruginosa
摘要:
A library of 112 4(5)-aryl-2-amino-1H-imidazoles, 4,5-diphenyl-2-amino-1H-imidazoles, and N1-substituted 4(5)-phenyl-2-aminoimidazoles was synthesized and tested for the antagonistic effect against biofilm formation by Salmonella Typhimurium and Pseudomonas aeruginosa. The substitution pattern of the 4(5)phenyl group and the nature of the N1-substituent were found to have a major effect on the biofilm inhibitory activity. The most active compounds of this series were shown to inhibit the biofilm formation at low micromolar concentrations. Furthermore, the influence of 6 imidazo[1,2-a]pyrimidines and 18 imidazo[1,2-a]pyrimidinium salts on the biofilm formation was tested. These compounds are the chemical precursors of the 2-aminoimidazoles in our synthesis pathway. A good correlation was found between the activity of the imidazo[1,2-a]pyrimidinium salts and their corresponding 2-aminoimidazoles, supporting the hypothesis that the imidazo[1,2-a]pyrimidinium salts are possibly cleaved by cellular nucleophiles to form the active 2-aminoimidazoles. However, the imidazo[1,2-a]pyrimidines did not show any biofilm inhibitory activity, indicating that these molecules are not susceptible to in situ degradation to 2-aminoimidazoles. Finally, we demonstrated the lack of biofilm inhibitory activity of an array of 37 2N-substituted 2-aminopyrimidines, which are the chemical precursors of the imidazo[1,2-a]pyrimidinium salts in our synthesis pathway.
[EN] HETEROCYCLIC COMPOUNDS CONTAINING AN INDOLE CORE<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES CONTENANT UN COEUR INDOLE
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2011071716A1
公开(公告)日:2011-06-16
Disclosed are novel compounds which inhibit RSK, methods of making such compounds and pharmaceutical compositions comprising such compounds. Also disclosed are methods of treating RSK2 regulated disorders using compounds of the invention.
Efficient One-Pot, Two-Step, Microwave-Assisted Procedure for the Synthesis of Polysubstituted 2-Aminoimidazoles
作者:Denis S. Ermolat'ev、Eugene V. Babaev、Erik V. Van der Eycken
DOI:10.1021/ol062421c
日期:2006.12.1
A microwave-assisted, one-pot, two-step protocol was developed for the construction of polysubstituted 2-aminoimidazoles. This process involves the sequential formation of imidazo[1,2-a]pyrimidinium salts from readily available 2-aminopyrimidines and alpha-bromocarbonyl compounds, followed by opening of the pyrimidine ring with hydrazine. [reaction: see text]
NOVEL TUBULIN INHIBITORS AND METHODS OF USING THE SAME
申请人:Chen Meng-Hsin
公开号:US20120172374A1
公开(公告)日:2012-07-05
Compounds represented by the formula (I) or pharmaceutically acceptable salts thereof:
R
2
—Y—Z-Q-A-R
1
Formula (I)
wherein R
1
, R
2
, Y, Z, Q, and A are as defined. These compounds are inhibitors of tubulin polymerization by binding at colchicines binding site and are useful in the treatment of tumors or mitotic diseases such as cancers, gout, and other conditions associated with abnormal cell proliferation.
Compounds of the following formula are provided for use in inhibiting Poly (ADP-ribose) Polymerase (PARP):
wherein the variables are defined herein. Also provided are pharmaceutical compositions, kits and articles of manufacture comprising such compounds, methods and intermediates useful for making the compounds, and methods of using the compounds.