Patent ID: 7183279

Claim:
A compound selected from the group consisting of: N-5-guanidinopentanamide-(2S)-yl-2-N-(p-hydroxyphenylacetyl)phenylenediamine; N-5-guanidinopentanamide-(2S)-yl-2-N-(p-hydroxyphenylacetyl)-4-trifluoromethyl-phenylenediamine; N-5-guanidinopentanamide-(2R)-yl-2-N-(p-hydroxyphenylacetyl)-4-carboxy-phenylenediamine; N-5-guanidinopentanamide-(2R)-yl-2-N-(p-hydroxyphenylacetyl)-4-(p-chlorobenzoyl)-phenylenediamine; and N-5-guanidinopentanamide-(2R)-yl-2-N-(p-hydroxybenzyl)-5-carboxybenzimidazole.