Err modulators

A method of modulating the activity of an estrogen related receptor comprising contacting the estrogen related receptor with a compound of the formula:

• wherein:
• X1 is O or S;
• A is C1-6 alkyl-aryl or C6 aryl;
• B is C1-6 alkyl, C6-10 cycloalkyl, C1-6 alkyl-C6-10 aryl, SC(O)-aryl, C6-10 aryl, 5-10 membered heteroaryl, or N(H)C(O)-aryl;
• R1 is H, halo, OH, N(R3)2, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkoxy, C(O)C1-6 alkoxy, or B(OH)2;
• R2 is H, halo, N(R3)2, N(R4)2, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkoxy, C(O)C1-6 alkoxy, C(O)OH, N(H)C(O)—C3-6 cycloalkyl, or aryl;
• R3 is H or O;
• R4 is O or C1-6 alkyl;
• m is 0, 1, or 2;
• and
• n is 0, 1, or 2;
• or a pharmaceutically acceptable salt thereof.