Patent ID: 7435740

Claim:
A compound of Formula (I): wherein X is CH or N; R 1 and R 2 are each independently alkyl, substituted alkyl, aralkyl, substituted aralkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aryl, or substituted aryl, providing R 1 and R 2 are not both methyl; R 3 is aryl, substituted aryl, alkyl, substituted alkyl, aralkyl, or substituted aralkyl, providing R 3 is not aryl or substituted aryl when X is CH and R 1 and R 2 are both n-propyl; R 4 is hydrogen, alkyl, substituted alkyl, aralkyl, substituted aralkyl, aryl, or substituted aryl; and one of the dashed lines represents a double bond and the other represents a single bond; or a pharmaceutically acceptable salt thereof.