Endothelin antagonists.

摘要

The invention relates to the products (I): R1 - H X1 D X2 I X3 (I> X1 representing a leucine, arginine or glutamine residue, X2 representing an isoleucine or valine residue, X3 representing a tryptophan, amidotryptophan or D-naphthylalanine residue, and either R1 representing: X4 representing a glycine, norleucine, valine, isoleucine, leucine, alanine, phenylalanine, beta-alanine or methionine residue, X5 a valine, leucine or glutamic acid residue, X4 being other than methionine when X5 represents valine, or R1 representing: X6 representing a leucine or valine residue, X6 being other than leucine when X1 represents glutamine, or R1 representing: X7 representing a norleucine residue, or R1 representing X8 representing a cysteine, alanine or serine residue, the broken line representing or otherwise a disulphide bridge between 2 cysteine residues, to a process for preparing them, to their use as medicaments and to pharmaceutical compositions containing them.