Patent ID: 8466177

Claim:
A compound of the following formula: or a pharmaceutically acceptable salt or prodrug thereof, wherein: X is S or NH; Y is O or S; Z is selected from a substituted or unsubstituted 5-member heteroaryl ring, 6-member heteroaryl ring, or phenyl; R 1 is selected from a substituted or unsubstituted aryl or heteroaryl ring; and L is —CH 2 — or ═CH—, wherein when X is S, R is selected from a substituted or unsubstituted fused or bicyclic cycloalkyl ring; and when X is NH, R is selected from a substituted or unsubstituted fused or bicyclic cycloalkyl ring or a substituted or unsubstituted cycloalkyl ring having 3 to 14 carbon ring atoms.