@article{3062105,
    title = "2-Oxoamide inhibitors of phospholipase A2 activity and cellular arachidonate release based on dipeptides and pseudodipeptides",
    author = "Barbayianni, E. and Stephens, D. and Grkovich, A. and Magrioti, V. and Hsu, Y.-H. and Dolatzas, P. and Kalogiannidis, D. and Dennis, E.A. and Kokotos, G.",
    journal = "BIOORGANIC AND MEDICINAL CHEMISTRY",
    year = "2009",
    volume = "17",
    number = "13",
    pages = "4833-4843",
    issn = "0968-0896",
    doi = "10.1016/j.bmc.2009.03.069",
    keywords = "arachidonic acid;  dipeptide derivative;  phospholipase A2;  phospholipase A2 inhibitor;  pseudopeptide, animal cell;  arachidonic acid metabolism;  article;  drug activity;  drug structure;  enzyme activity;  enzyme inhibition;  mouse;  nonhuman, Animals;  Arachidonic Acid;  Cell Line, Tumor;  Dipeptides;  Humans;  Inhibitory Concentration 50;  Macrophages;  Mice;  Phospholipases A2, Cytosolic;  Phospholipases A2, Secretory;  Pyridines;  Structure-Activity Relationship",
    abstract = "A series of 2-oxoamides based on dipeptides and pseudodipeptides were synthesized and their activities towards two human intracellular phospholipases A2 (GIVA cPLA2 and GVIA iPLA2) and one human secretory phospholipase A2 (GV sPLA2) were evaluated. Derivatives containing a free carboxyl group are selective GIVA cPLA2 inhibitors. A derivative based on the ethyl ester of an ether pseudodipeptide is the first 2-oxoamide, which preferentially inhibits GVIA iPLA2. The effect of 2-oxoamides on the generation of arachidonic acid from RAW 264.7 macrophages was also studied and it was found that selective GIVA cPLA2 inhibitors preferentially inhibited cellular arachidonic acid release; one pseudodipeptide gave an IC50 value of 2 μM. © 2009 Elsevier Ltd. All rights reserved."
}