Compounds and methods for treating aids and hiv infections

A compound of the formula

• or a pharmaceutically acceptable salt thereof;
• wherein
• R2 and R3 are in each instance independently selected from the group consisting of hydrogen and a prodrug forming group;
• R5 is alkyl, alkenyl, heteroalkyl, haloalkyl, cycloalkyl, heterocycloalkyl, aryl, arylalkyl, heteroaryl, or heteroarylalkyl, each of which is optionally substituted;
• X4 is carbonyl, S(O) or SO2;
• X5 is a bond, oxygen, unsubstituted nitrogen, substituted nitrogen, sulfur, S(O) or sulfone;
• L1 and L2 are independently selected in each instance from the group consisting of alkylene, cycloalkylene, unsaturated alkylene, heteroalkylene, cycloheteroalkylene, and unsaturated heteroalkylene, each of which is optionally substituted;
• W is a bond, (H)C═C(H), oxygen, sulfur, S(O), SO2, C(O), or optionally substituted nitrogen;
• Q2 is a divalent carbocyle, heterocycle, aryl, or heteroaryl, each of which is optionally substituted with one or more substituents;
• and
• Z is selected from the group consisting of monocyclic heterocycle, bicyclic heterocycle and tricyclic heterocycle, each of which is optionally substituted.