Proteasome activity enhancing compounds

A compound having a structure of Formula (II), or a pharmaceutically acceptable salt, solvate, clathrate, or prodrug thereof:

• wherein:
• Q1 is C(Ra) or nitrogen;
• Q2 is selected from the group consisting of C(R3) and N;
• Q6 and Q7 are each CH;
• R1, R2, R3b, R3e, R3g, and Rg are each independently selected from the group consisting of hydrogen and optionally substituted C1-C10 alkyl;
• R3 is independently selected from the group consisting of hydrogen, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted aryl, halo, ORc, N3, NRdRd, C(O)ORc, NO2, CN, C(O)Rc, C(O)C(O)Rc, C(O)NRdRd, NRdC(O)Rc, NRdS(O)nRc, N(Rd)(COORc), NRdC(O)C(O)Rc, NRdC(O)NRdRd, NRdS(O)nNRdRd, NRdS(O)nRc, S(O)nRc, S(O)nNRdRd, OC(O)ORc, (C═NRd)Rc, OC(O)Rc, optionally substituted heterocyclic and optionally substituted heteroaryl;
• R3c is selected from the group consisting of hydrogen, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted aryl, halo, N3, ORc, NRdRd, C(O)ORc, NO2, CN, C(O)Rc, C(O)C(O)Rc, C(O)NRdRd, NRdC(O)Rc, NRdS(O)nRc, N(Rd)(COORc), NRdC(O)C(O)Rc, NRdC(O)NRdRd, NRdS(O)nNRdRd, NRdS(O)nRc, S(O)nRc, S(O)nNRdRd, OC(O)ORc, (C═NRd)Rc, OC(O)Rc, optionally substituted heterocyclic, and optionally substituted heteroaryl;
• R3f is halo or CN;
• Z is selected from the group consisting of NRbRb, optionally substituted aryl, optionally substituted heterocyclic, optionally substituted heteroaryl, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, and ORc;
• each Ra is independently selected from the group consisting of hydrogen, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted aryl, halo, N3, ORc, NRdRd, C(O)ORC, NO2, CN, C(O)Rc, C(O)C(O)RC, C(O)NRdRd, NRdC(O)RC, NRdS(O)nRc, N(Rd)(COORc), NRdC(O)C(O)Rc, NRdC(O)NRdRd, NRdS(O)nNRdRd, NRdS(O)nRc, S(O)nRc, S(O)nNRdRd, OC(O)ORc, (C═NRd)Rc, OC(O)Rc, optionally substituted heterocyclic, and optionally substituted heteroaryl;
• each Rb is independently selected from the group consisting of hydrogen, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C1-C10 alkoxy, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted heterocyclic, optionally substituted aryl, and optionally substituted heteroaryl;
• each Rc is independently selected from the group consisting of hydrogen, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted heterocyclic, optionally substituted aryl, and optionally substituted heteroaryl;
• each Rd is independently selected from the group consisting of hydrogen, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C1-C10 alkoxy, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted heterocyclic, optionally substituted aryl, and optionally substituted heteroaryl;
• or two geminal Rd groups are taken together with the nitrogen atom to which they are attached to form an optionally substituted heterocyclic or an optionally substituted heteroaryl;
• each Re is independently selected from the group consisting of hydrogen, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C3-C12 cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted heterocyclic, optionally substituted aryl and optionally substituted heteroaryl;
• and
• each n is independently 0, 1 or 2.