Patent ID: 8735609

Claim:
A compound having the structure of Formula I: wherein: R 1 and R 2 are independently H, —OH, —OR′, —NH 2 , —NR′, ═CH 2 , ═CHR′, ═O, —R′, halogen, —C(R) 2 —COOR′, —C(R) 2 —COO—C(R) 2 —R′, —C(R) 2 —COO—C(R) 2 —C═CR′, —(CH 2 ) q O(O)CR′ or —(CH 2 ) q CO 2 -haloalkyl where q is 0, 1, 2, 3, 4 or 5, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted alkoxy, optionally substituted alkyl amino, optionally substituted haloalkyl, optionally substituted haloalkoxy, optionally substituted alkylthio, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted aralkyl, optionally substituted heteroaralkyl, optionally substituted heteroalkyl, optionally substituted cycloalkyl or optionally substituted cycloheteroalkyl, providing that valency is not violated; R is H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted aralkyl, optionally substituted heteroaralkyl, optionally substituted heteroalkyl, optionally substituted alkyl(cycloheteroalkyl); R 3 is independently H, —OH, or O(CO)R′; R 4 is ═CR a R b or CHR c R d ; R a and R b are independently H, —COOR′, —CONR c R d or R′; R c and R d are independently H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, (CH 2 ) t CONH 2 R′, or (CH 2 ) t COOR′ where t is 1, 2 or 3; R 6 is H, or R′; R′ is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted aralkyl, optionally substituted heteroaralkyl, optionally substituted heteroalkyl, optionally substituted alkyl(cycloheteroalkyl), (CO)R″, or (COO)R″; R″ is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted aralkyl, optionally substituted heteroaralkyl, optionally substituted heteroalkyl, or optionally substituted alkyl(cycloheteroalkyl); A is O; the ring containing A is optionally partially unsaturated, provided that R 4 is not ═CR a R b when the ring carbon to which R 4 is attached is unsaturated; X 1 , X 2 , and X 3 , are O, and X 4 is C(R 1 ) 2 ; Y is O; m is 1; n is 1; and p is 1; and its pharmaceutically acceptable salts thereof; with the proviso that the compound does not have the structure of Formula A