Analogs of Indole-3-Carbinol Metabolites as Chemotherapeutic and Chemopreventive Agents

A compound having the structure of formula (IV)

• wherein:
• R1, R2, R3, R4, R5, R6, R7, R8, R5A, R6A, R7A, R8A, R22 and R23 are independently selected from the group consisting of hydrogen, C1-C24 alkyl, C2-C24 alkenyl, C2-C24 alkynyl, C5-C20 aryl, C6-C24 alkaryl, C6-C24 aralkyl, halo, hydroxyl, sulfhydryl, C1-C24 alkoxy, C2-C24 alkenyloxy, C2-C24 alkynyloxy, C5-C20 aryloxy, acyl, acyloxy, C2-C24 alkoxycarbonyl, C6-C20 aryloxycarbonyl, halocarbonyl, C2-C24 alkylcarbonato, C6-C20 arylcarbonato, carboxy, carboxylato, carbamoyl, mono-(C1-C24 alkyl)-substituted carbamoyl, di-(C1-C24 alkyl)-substituted carbamoyl, mono-substituted arylcarbamoyl, thiocarbamoyl, carbamido, cyano, isocyano, cyanato, isocyanato, isothiocyanato, azido, formyl, thioformyl, amino, mono- and di-(C1-C24 alkyl)-substituted amino, mono- and di-(C5-C20aryl)-substituted amino, C2-C24alkylamido, C5-C20arylamido, imino, alkylimino, arylimino, nitro, nitroso, sulfo, sulfonato, C1-C24 alkylsulfanyl, arylsulfanyl, C1-C24 alkylsulfinyl, C5-C20 arylsulfinyl, C1-C24 alkylsulfonyl, C5-C20 arylsulfonyl, phosphono, phosphonato, phosphinato, phospho, phosphino, and combinations thereof, and further wherein any two adjacent (ortho) substituents may be linked to form a cyclic structure selected from five-membered rings, six-membered rings, and fused five-membered and/or six-membered rings, wherein the cyclic structure is aromatic, alicyclic, heteroaromatic, or heteroalicyclic, and has zero to 4 non-hydrogen substituents and zero to 3 heteroatoms;
• R11, R12, and R12A are independently selected from the group consisting of hydrogen, C1-C24 alkyl, C2-C24 alkoxycarbonyl, amino-substituted C1-C24 alkyl, (C1-C24 alkylamino)-substituted C1-C24 alkyl, and di-(C1-C24 alkyl)amino-substituted C1-C24 alkyl;
• and
• X1 and X2 are independent selected from O, S, arylene, heteroarylene, CR15R16 and NR17 wherein R15 and R16 are hydrogen, C1-C6 alkyl, or together form ═CR18R19 where R18 and R19 are hydrogen or C1-C6 alkyl, and R17 is as defined for R11 and R12,
• with the proviso that at least one of R1, R2, R3, R1, R5, R6, R7, R8, R5A, R6A, R7A, R8A, R11, R22 and R23 is other than hydrogen.