Aromatic compounds

Abstract

A composition comprising a compound of the formula: ##STR1## wherein: X is H or OH; Y is a group capable of hydrogen bonding to amino, guanidino, or imidazole function, or a group comprising an acidic hydrogen atom, a protected acidic group, or an anion; E is N or CR.sub.1, wherein R.sub.1 is H, OH, CN, F, Cl, Br, or I; A.sub.4, A.sub.5, and A.sub.6 are each independently N, CH, CR.sub.40 or CZ wherein R.sub.40 is R.sub.43, OR.sub.43, SR.sub.43, S(O)R.sub.43, S(O).sub.2 R.sub.43, or NR.sub.43 R.sub.44 wherein R.sub.43 comprises an alkyl of 1 to 3 carbon atoms, an acyl of 2 to 3 carbon atoms, or an alkyl of 1 to 3 carbon atoms substituted with an acyl of 2 to 3 carbon atoms, and R.sub.44 is H or an alkyl of 1 to 2 carbon atoms, and Z is a group capable of hydrogen bonding to carboxyl, or a group comprising a basic heteroatom, a protected basic heteroatom, or a cation.

Dependencies are inferred from the claim text.