Method for inhibiting topoisomerase ii

A method of treating breast cancer treatable by inhibiting topoisomerase II, comprising administering to the subject an effective amount of a compound represented by formula (XXX):

• or a tautomer or pharmaceutically acceptable salt thereof, wherein:
• X41 is O, S, or NR42;
• X42 is CR44 or N;
• Y40 is N or CR43;
• Y41 is N or CR45;
• Y42 for each occurrence, is independently N, C or CR46;
• Z is OH, SH, or NHR7;
• R41 is —H, —OH, —SH, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted alkynyl, an optionally substituted cycloalkyl, an optionally substituted cycloalkenyl, an optionally substituted heterocyclyl, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted aralkyl, an optionally substituted heteroaralkyl, halo, cyano, nitro, guanadino, a haloalkyl, a heteroalkyl, an alkoxy or cycloalkoxy, a haloalkoxy, —NR10R11, —OR7, —C(O)R7, —C(O)OR7, —C(S)R7, —C(O)SR7, —C(S)SR7, —C(S)OR7, —C(S)NR10R11, —C(NR8)OR7, —C(NR8)R7, —C(NR8)NR10R11, —C(NR8)SR7, —OC(O)R7, —OC(O)OR7, —OC(S)OR7, —OC(NR8)OR7, —SC(O)R7, —SC(O)OR7, —SC(NR8)OR7, —OC(S)R7, —SC(S)R7, —SC(S)OR7, —OC(O)NR10R11, —OC(S)NR10R11, —OC(NR8)NR10R11, —SC(O)NR10R11, —SC(NR8)NR10R11, —SC(S)NR10R11, —OC(NR8)7—, —SC(NR8)7, —C(O)NR10R11, —NR8C(O)R7, —NR7C(S)R7, —NR7C(S)OR7, —NR7C(NR8)7, —NR7C(O)OR7, —NR7C(NR8)OR7, —NR7C(O)NR10R11, —NR7C(S)NR10R11, —NR7C(NR8)NR10R11, —SR7, —S(O)pR7, — OS(O)pR7, —OS(O)pOR7, —OS(O)pNR10R11, —S(O)pOR7, —NR8S(O)pR7, —NR7S(O)pNR10R11, —NR7S(O)pOR7, —S(O)pNR10R11, —SS(O)pR7, —SS(O)pOR7, —SS(O)pNR10R11, —OP(O)(OR7)2, or —SP(O)(OR7)2;
• R42 is —H, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted alkynyl, an optionally substituted cycloalkyl, an optionally substituted cycloalkenyl, an optionally substituted heterocyclyl, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted aralkyl, an optionally substituted heteroaralkyl, hydroxyalkyl, alkoxyalkyl, a haloalkyl, a heteroalkyl, —C(O)R7, —(CH2)mC(O)OR7, —C(O)OR7, —OC(O)R7, —C(O)NR10R11, —S(O)pR7, —S(O)pOR7, or —S(O)pNR10R11;
• R43 and R44 are, independently, —H, —OH, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted alkynyl, an optionally substituted cycloalkyl, an optionally substituted cycloalkenyl, an optionally substituted heterocyclyl, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted aralkyl, an optionally substituted heteroaralkyl, hydroxyalkyl, alkoxyalkyl, halo, cyano, nitro, guanadino, a haloalkyl, a heteroalkyl, —C(O)R7, —C(O)OR7, —OC(O)R7, —C(O)NR10R11, —NR8C(O)R7, —SR7, —S(O)pR7, —OS(O)pR7, —S(O)pOR7, —NR8S(O)pR7, —S(O)pNR10R11, or R43 and R44 taken together with the carbon atoms to which they are attached form an optionally substituted cycloalkenyl, an optionally substituted aryl, an optionally substituted heterocyclyl, or an optionally substituted heteroaryl;
• R45 is —H, —OH, —SH, —NR7H, —OR26, —SR26, —NHR26, —O(CH2)mOH, —O(CH2)mSH, —O(CH2)mNR7H, —S(CH2)mOH, —S(CH2)mSH, —S(CH2)mNR7H, —OC(O)NR10R11, —SC(O)NR10R11, —NR7C(O)NR10R11, —OC(O)R7, —SC(O)R7, —NR7C(O)R7, —OC(O)OR7, —SC(O)OR7, —NR7C(O)OR7, —OCH2C(O)R7, —SCH2C(O)R7, —NR7CH2C(O)R7, —OCH2C(O)OR7, —SCH2C(O)OR7, —NR7CH2C(O)OR7, —OCH2C(O)NR10R11, —SCH2C(O)NR10R11, —NR7CH2C(O)NR10R11, —OS(O)pR7, —SS(O)pR7, —NR7S(O)pR7, —OS(O)pNR10R11, —SS(O)pNR10R11, —NR7S(O)pNR10R11, —OS(O)pOR7, —SS(O)pOR7, —NR7S(O)pOR7, —OC(S)R7, —SC(S)R7, —NR7C(S)R7, —OC(S)OR7, —SC(S)OR7, —NR7C(S)OR7, —OC(S)NR10R11, —SC(S)NR10R11, —NR7C(S)NR10R11, —OC(NR8)7, —SC(NR8)7, —NR7C(NR8)7, —OC(NR8)OR7, —SC(NR8)OR7, —NR7C(NR8)OR7, —OC(NR8)NR10R11, —SC(NR8)NR10R11, or —NR7C(NR8)NR10R11;
• R46, for each occurrence, is independently selected from the group consisting of H, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted alkenyl, an optionally substituted cycloalkyl, an optionally substituted cycloalkenyl, an optionally substituted heterocyclyl, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted aralkyl, an optionally substituted heteroaralkyl, halo, cyano, nitro, guanadino, a haloalkyl, a heteroalkyl, —NR10R11, —OR7, —C(O)R7, —C(O)OR7, —OC(O)R7, —C(O)NR10R11, —NR8C(O)R7, —SR7, —S(O)pR7, —OS(O)pR7, —S(O)pOR7, —NR8S(O)pR7, or —S(O)pNR10R11;
• R7 and R8, for each occurrence, are, independently, —H, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted alkynyl, an optionally substituted cycloalkyl, an optionally substituted cycloalkenyl, an optionally substituted heterocyclyl, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted aralkyl, or an optionally substituted heteroaralkyl;
• R10 and R11, for each occurrence, are independently —H, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted alkynyl, an optionally substituted cycloalkyl, an optionally substituted cycloalkenyl, an optionally substituted heterocyclyl, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted aralkyl, or an optionally substituted heteroaralkyl;
• or R10 and R11, taken together with the nitrogen to which they are attached, form an optionally substituted heterocyclyl or an optionally substituted heteroaryl;
• R26 is a lower alkyl;
• p, for each occurrence, is, independently, 0, 1 or 2;
• and
• m, for each occurrence, is independently, 1, 2, 3, or 4.