US Patent 7205311 Therapeutic acridone and acridine compounds

This invention pertains to certain acridone and acridine compounds of the formula which inhibit telomerase, regulate cell proliferation, etc., and/or treat cancer, proliferative conditions, etc.: wherein either: (a) K is ═O, L is —H, alpha single bond, beta is a double bond, gamma is a single bond (acridones); or, (b) K is a 9-substituent, L is absent, alpha is a double bond, beta is a single bond, gamma is a double bond (acridines); and wherein: J1 is a 2- or 3-substituent; J2 is a 6- or 7-substituent; J1 and J2 are each a group of the formula —N(RN)—W, wherein: RN is a nitrogen substituent and is hydrogen, C1-7alkyl, C3-20heterocyclyl, or C5-20aryl, and is optionally substituted; and, W is C1-17alkyl, C3-20heterocyclyl, or C5-20aryl, and is optionally substituted; and, wherein, when K is a 9-substituent, K is a group of the formula —N(RN)—Q, wherein: RN is an amino substituent and is hydrogen, C1-7alkyl, C3-20heterocyclyl, or C5-20aryl; and, Q is C1-7alkyl, C3-20heterocyclyl, or C5-20aryl, and is optionally substituted; and pharmaceutically acceptable salts, esters, amides, solvates, hydrates, and protected forms thereof. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit telomerase, to regulate cell proliferation, etc., and/or in the treatment of cancer, proliferative conditions, etc.