US Patent 7183440 Pharmaceutically useful compounds

A compound of formula (I) or (II): wherein A is hydrogen or CR1R2; Y and Z are each, independently, hydrogen or a halogen; X is —NR4R5, or R7; R1 is hydrogen, or a substituted or unsubstituted alkyl or alkenyl group containing 1–4 carbon atoms; when X is —NR4R5, R2 is a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1–12 carbon atoms; when X is R7, R2 is an unsubstituted alkyl, alkenyl or alkynyl group, or a substituted or unsubstituted aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1–12 carbon atoms; R3 is a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1–12 carbon atoms; R4 is hydrogen, a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1–12 carbon atoms, —COOR8, or —COR8; R5 is hydrogen, or a substituted or unsubstituted alkyl or alkenyl group containing 1–5 carbon atoms; R7 is an unsubstituted alkyl, alkenyl, or alkynyl group, that contains 1–4 carbon atoms; and, R8 is an unsubstituted or halo-substituted alkyl, aryl, or aralkyl group, that contains 1–12 carbon atoms