| abstract |
(57) [Summary] (Modified) [Structure] Formula (II): (In the formula, n is 0 or 1 to 4; R 1 and R 2 are H, O H, an alkoxy group having 1 to 4 carbon atoms, a benzyloxy group or a methoxymethoxy group; R 3 is H, OH, a halogen atom, an alkoxy group having 1 to 4 carbon atoms, a benzyloxy group, A compound of formula (I) obtained by dehydrating a compound of (methoxymethoxy group, etc.): And a compound of formula (I). [Effect] The compound of formula (I) and its non-toxic pharmacologically acceptable salt or ester exhibit useful pharmacological actions such as estrogen activity, anti-estrogen activity, progesterone activity and anti-tumor activity. |