Patent ID: 7402687

Claim:
A compound of formula VII: or a pharmaceutically acceptable salt thereof, wherein: each independently represents a single or double bond, provided that both groups do not simultaneously represent a double bond; R 1 is hydrogen, —C(O)R, -Glu, —C(O)Glu, or —C(O)OGlu; R is hydrogen or lower alkyl; R 2 is hydrogen, —OH, —OS(O) 2 OH, or —OGlu; R 3 is hydrogen, halogen, methyl, methoxy, —OH, —OS(O) 2 OH, or —OGlu; R 4 is hydrogen, —OH, —OS(O) 2 OH, or —OGlu; R a and R b are each hydrogen or are taken together to form an oxo moiety; R c and R d are each hydrogen or are taken together to form an oxo moiety; each R x is independently halogen or lower alkyl; each R 5 is independently hydrogen, —OH, —OS(O) 2 OH, or —OGlu; each Glu is a glucuronyl moiety; and n is one or two; provided that at least one of R 1 , R 2 , R 4 , and R 5 contains a glucuronyl moiety.