Stephens Daren, Barbayianni Efrosini, Constantinou-Kokotou Violetta, Peristeraki Anna, Six David A, Cooper Jennifer, Harkewicz Richard, Deems Raymond A, Dennis Edward A, Kokotos George
Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0601, USA.
J Med Chem. 2006 May 4;49(9):2821-8. doi: 10.1021/jm050993h.
Inhibitors of the Group IVA phospholipase A(2) (GIVA cPLA(2)) and GVIA iPLA(2) are useful tools for defining the roles of these enzymes in cellular signaling and inflammation. We have developed inhibitors of GVIA iPLA(2) building upon the 2-oxoamide backbone that are uncharged, containing ester groups. Although the most potent inhibitors of GVIA iPLA(2) also inhibited GIVA cPLA(2), there were three 2-oxoamide compounds that selectively and weakly inhibited GVIA iPLA(2). We further show that several potent 2-oxoamide inhibitors of GIVA cPLA(2) containing free carboxylic groups (Kokotos et al. J. Med. Chem. 2002, 45, 2891-2893) do not inhibit GVIA iPLA(2) and are, therefore, selective GIVA cPLA(2) inhibitors.
IVA型磷脂酶A2(GIVA cPLA2)和GVIA型磷脂酶A2(GVIA iPLA2)的抑制剂是确定这些酶在细胞信号传导和炎症中作用的有用工具。我们基于2-氧代酰胺主链开发了GVIA iPLA2的抑制剂,这些抑制剂呈电中性,含有酯基。尽管GVIA iPLA2的最有效抑制剂也抑制GIVA cPLA2,但有三种2-氧代酰胺化合物选择性且微弱地抑制GVIA iPLA2。我们进一步表明,几种含有游离羧基的GIVA cPLA2的强效2-氧代酰胺抑制剂(Kokotos等人,《药物化学杂志》,2002年,45卷,2891 - 2893页)不抑制GVIA iPLA2,因此是选择性的GIVA cPLA2抑制剂。