The discovery and evaluation of 5-(4-phenylbenzyl)oxazole-4-carboxamides as prostacyclin (IP) receptor antagonists is described. Analogs disclosed showed high affinity for the IP receptor in human platelet membranes with IC50 values of 0.05-0.50 microM, demonstrated functional antagonism by inhibiting cAMP production in HEL cells with IC50 values of 0.016-0.070 microM, and exhibited significant selectivity versus other prostanoid receptors.
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| http://dx.doi.org/10.1016/j.bmcl.2006.12.025 | DOI Listing |
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