Patent ID: 8337941

Claim:
A compound having the following structure: wherein Y is O, X is O, bond α is absent and bond β is present; R 3 is —H, —OH, alkyl, alkenyl, alkynyl, or halo, R 4 is —H, —R 11 N(R 35 ) 2 , —N(R 35 )R 17 N(R 35 ) 2 , —R 17 N(H)R 18 , —R 11 NR 13 R 14 , —N(R 35 ) alkyl, or a piperazine group, wherein R 11 is a straight or a branched chain C 2 -C 6 alkylene, C 2 -C 6 alkenylene or C 2 -C 6 alkynylene, and wherein the (R 35 ) 2 group may be attached to any carbon atom of the R 11 group, wherein R 13 or R 14 or both are, independently, methyl or ethyl, wherein R 17 is a straight or a branched chain C 2 -C 6 alkylene, C 2 -C 6 alkenylene or C 2 -C 6 alkynylene, wherein R 18 is a straight or a branched chain alkyl, alkenyl or alkynyl, where each occurrence of R 35 is, independently, —H, —CH 3 or —C 2 H 5 ; R 5 is —H, —R 12 N(R 36 ) 2 , R 11 NR 15 R 16 , —N(R 36 ) alkyl, —N(R 36 ) 2 , a piperazine group, a mono-substituted heterocyclyl or —R 19 W, wherein R 12 is a straight or a branched chain C 1 -C 6 alkylene, C 1 -C 6 alkenylene or C 1 -C 6 alkynylene, and wherein the NH 2 group may be attached to any carbon atom of the R 12 group, wherein R 15 or R 16 or both are, independently, methyl or ethyl, wherein R 19 is a straight or a branched chain C 1 -C 6 alkylene, C 1 -C 6 alkenylene or C 1 -C 6 alkynylene, wherein W is a mono- or di-substituted heterocyclyl group or a mono-substituted heterocyclyl cation, where each occurrence of R 36 is, independently, —H, —CH 3 or —C 2 H 5 ; when one of R 4 or R 5 is —H, then the other of R 4 or R 5 is other than —H; and wherein the compound contains an N(R x ) or N(R x ) 2 group wherein each occurrence of R x is, independently, —H, —CH 3 or —C 2 H 5 or a salt of the compound.