Patent ID: 7569601

Claim:
A compound of formula (I): or a pharmaceutically acceptable salt thereof wherein each R 2 is independently selected from OH, alkyl, or halogen; q is independently selected from 0, 1, or 2; X is —(CH 2 ) n — where n is 0, 1, 2, or 3, —C(R g ) 2 —, or —O—; each of R 6 and R 7 are selected from H or alkyl; R 8 is —CO 2 H, —(R h ) t CO 2 H, or —CONR a R b ; t is 1 to 8; R a is H, alkyl, cycloalkyl, aryl, heteroaryl, or heterocyclyl; R b is H, alkyl, cycloalkyl, aryl, heteroaryl, or heterocyclyl; or R a and R b may combine with the atoms to which they are bound to form a heteroaryl or heterocyclyl ring; R g is alkyl; and each R h independently is —CR j R k —, where each of R j and R k independently are selected from H and alkyl.