Patent ID: 7179799

Claim:
A compound represented by Formula I: or pharmaceutically acceptable salts thereof, wherein: the bond represented by the wavy line may be a single or double bond such that when the wavy line is a single bond, R 1 is selected from the group consisting of hydrogen, sulfate and glucuronide or other esters, and when the wavy line is a double bond, R 1 does not exist; R 2 is lower alkyl; R 3 is selected from the group consisting of hydrogen, sulfate and glucuronide; R 4 through R 7 and R 10 through R 13 may be the same or different and each represents hydrogen, hydroxy, ketone, lower alkyl, lower alkoxy, halogen, or carbonyl group; R 8 and R 9 are independently selected from the group consisting of hydrogen, hydroxy, lower alkyl, lower alkoxy, halogen, and carbonyl groups; and R 14 is selected from the group consisting of hydrogen, sulfate and glucuronide; said compound being present in chemically pure form.