A number of 4'-heterocyclic biphenylsulfonamide derivatives, formally derived from BMS-193884 (1) by replacing the oxazole ring with other heterocyclic rings, are potent and selective endothelin A (ET(A)) receptor antagonists. Among the analogues examined, the pyrimidine derivative 18 is the most potent (K(i)=0.9 nM) and selective for the ET(A) receptor, approximately equivalent to 1.
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| http://dx.doi.org/10.1016/s0960-894x(01)00791-0 | DOI Listing |
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