Patent ID: 8153843

Claim:
A compound according to the formula IA: or a stereoisomer, pharmaceutically acceptable salt, or ester thereof, wherein D is selected from the group consisting of (1) substituted or unsubstituted C 3 -C 8 -cycloalkyl, (2) substituted or unsubstituted aryl, and (3) substituted or unsubstituted heterocyclyl; Y is selected from the group consisting of (1) substituted or unsubstituted C 3 -C 8 -cycloalkyl, (2) substituted or unsubstituted aryl, (3) substituted or unsubstituted heterocyclyl, and (4) substituted or unsubstituted heteroaryl; R 4 is H or substituted or unsubstituted C 1 -C 6 -alkyl; and A is —C(R 1a ,R 2a )OR 3a , wherein R 1a , R 2a , and R 3a are independently selected from the group consisting of (1) H and (2) substituted or unsubstituted C 1 -C 6 -alkyl; with the proviso that at least one of R 1a , R 2a , and R 3a is a substituted or unsubstituted C 1 -C 6- alkyl.