There are disclosed compounds of formulae (I) or (II) in which A is selected from the group consisting of (1), (2), (3) and (4); OH, and one of R
1
and R
2
is selected from H, OH and OCH
3
, and the other of R
1
and R
2
is selected from OH and OCH
3
; one of R3 and R4 is selected from H, OH and OCH3, and the other of R3 and R4 is selected from OH and OCH3; provided that at least one of the pairs R
1
, R
2
and R
3
, R
4
are both OH; R
5
is selected from OH and OCH
3
; and
denotes a single or double bond; and pharmaceutically acceptable salts and prodrugs thereof. The compounds of the invention are useful for the treatment of hormone-dependent conditions and cancers.
There are disclosed compounds of formulae (I) or (II) in which A is selected from the group consisting of (1), (2), (3) and (4); OH, and one of R1 and R2 is selected from H, OH and OCH3, and the other of R1 and R2 is selected from OH and OCH3; one of R3 and R4 is selected from H, OH and OCH3, and the other of R3 and R4 is selected from OH and OCH3; provided that at least one of the pairs R1, R2 and R3, R4 are both OH; R5 is selected from OH and OCH3; and ----- denotes a single or double bond; and pharmaceutically acceptable salts and prodrugs thereof. The compounds of the invention are useful for the treatment of hormone-dependent conditions and cancers.