Bisaminoquinolines and bisaminoacridines compounds and methods of their use

A compound of formula I, II, or III:

• or a pharmaceutically acceptable salt thereof,
• wherein
• A is
• wherein X is F, Cl, or Br and R is H, C1-6alkyl, or —C(O)C1-6alkyl;
• B is
• wherein X′ is F, Cl, or Br and R′ is H, C1-6alkyl, or —C(O)C1-6alkyl;
• R1 is H, C1-6alkyl, —C(O)C1-6alkyl, alkaryl, or alkheteroaryl;
• R2 is H, C1-6alkyl, —C(O)C1-6alkyl, alkaryl, or alkheteroaryl;
• R3 is H, C1-6alkyl, —C(O)C1-6alkyl, alkaryl, or alkheteroaryl;
• R4 is H, C1-6alkyl, —C(O)C1-6alkyl, alkaryl, or alkheteroaryl;
• R5 is H, C1-6alkyl, —C(O)C1-6alkyl, alkaryl, or alkheteroaryl;
• R6 is H, C1-6alkyl, —C(O)C1-6alkyl, alkaryl, or alkheteroalkyl;
• n is 1, 2, 3, 4, or 5;
• m is 1, 2, 3, 4, or 5;
• j is 1, 2, 3, 4, or 5;
• and
• k is 1, 2, 3, 4, or 5.