Isoxazolines as Potent Antagonists of the Integrin αvβ3

Autor:	Patricia P Harlow, Solomon Ka, Smallheer Jm, Martha H. Corjay, Ruth R. Wexler, Pitts William J, Prabhakar K. Jadhav, Shaker A. Mousa, Buynitsky Js, John Wityak, James W. Jetter, Tobin Ae
Rok vydání:	1999
Předmět:	biology Chemistry Stereochemistry Integrin Substituent Reductive amination Chemical synthesis chemistry.chemical_compound Drug Discovery biology.protein Molecular Medicine Guanidine Cell adhesion Selectivity Lead compound
Zdroj:	Journal of Medicinal Chemistry. 43:27-40
ISSN:	1520-4804 0022-2623
DOI:	10.1021/jm9900321
Popis:	Starting with lead compound 2, we sought to increase the selectivity for αvβ3-mediated cell adhesion by examining the effects of structural changes in both the guanidine mimetic and the substituent α to the carboxylate. To prepare some of the desired aminoimidazoles, a novel reductive amination utilizing a trityl-protected aminoimidazole was developed. It was found that guanidine mimetics with a wide range of pKa's were potent antagonists of αvβ3. In general, it appeared that an acylated 2-aminoimidazole guanidine mimetic imparted excellent selectivity for αvβ3-mediated adhesion versus αIIbβ3-mediated platelet aggregation, with selectivity of approximately 3 orders of magnitude observed for compounds 3g and 3h. It was also found in this series that the α-substituent was required for potent activity and that 2,6-disubstituted arylsulfonamides were optimal. In addition, the selective αvβ3 antagonist 3h was found to be a potent inhibitor of αvβ3-mediated cell migration.
Databáze:	OpenAIRE
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