Discovery of quinazolines as histamine H4 receptor inverse agonists using a scaffold hopping approach
| Autor: | Obbe P. Zuiderveld, Eric E. J. Haaksma, Kamonchanok Sansuk, Adami M, Joachim Broeker, Gabriella Coruzzi, Rob Leurs, Rogier A. Smits, Elena Guaita, Iwan J. P. de Esch |
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| Rok vydání: | 2008 |
| Předmět: |
Models
Molecular Molecular model Stereochemistry In silico Chemistry Pharmaceutical Anti-Inflammatory Agents Molecular Conformation Histamine H1 receptor Receptors G-Protein-Coupled Histamine Agonists Inhibitory Concentration 50 In vivo Drug Discovery Inverse agonist Animals Humans Histamine H4 receptor Binding site Receptors Histamine H4 Chemistry Hydrogen-Ion Concentration Rats Kinetics Models Chemical Drug Design Quinazolines Molecular Medicine Receptors Histamine Pharmacophore |
| Zdroj: | Journal of medicinal chemistry. 51(24) |
| ISSN: | 1520-4804 |
| Popis: | From a series of small fragments that was designed to probe the histamine H(4) receptor (H(4)R), we previously described quinoxaline-containing fragments that were grown into high affinity H(4)R ligands in a process that was guided by pharmacophore modeling. With a scaffold hopping exercise and using the same in silico models, we now report the identification and optimization of a series of quinazoline-containing H(4)R compounds. This approach led to the discovery of 6-chloro-N-(furan-3-ylmethyl)2-(4-methylpiperazin-1-yl)quinazolin-4-amine (VUF10499, 54) and 6-chloro-2-(4-methylpiperazin-1-yl)-N-(thiophen-2-ylmethyl)quinazolin-4-amine (VUF10497, 55) as potent human H(4)R inverse agonists (pK(i) = 8.12 and 7.57, respectively). Interestingly, both compounds also possess considerable affinity for the human histamine H(1) receptor (H(1)R) and therefore represent a novel class of dual action H(1)R/H(4)R ligands, a profile that potentially leads to added therapeutic benefit. Compounds from this novel series of quinazolines are antagonists at the rat H(4)R and were found to possess anti-inflammatory properties in vivo in the rat. |
| Databáze: | OpenAIRE |
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