A compound having the formula I ##STR00001## wherein the O--(CH.sub.2).sub.n--N(R.sup.1,R.sup.2) substituent on the phenyl ring can be in meta or para position; n is 2-4 R.sup.e and 'R.sup.e are OH, optionally independently etherified or esterified; R.sup.1 and R.sup.2 are independently (1C-4C)alkyl, (2C-4C)alkenyl, hydroxy(2C-4C)alkyl, (1C-3C)alkoxy(2C-4C)alkyl, aryl or aryl(1C-2C)alkyl; or R.sup.1 and R.sup.2 together with the nitrogen form an aromatic or non-aromatic heterocyclic ring structure, optionally mono- or poly-substituted with (1C-4C)alkyl, (2C-4C)alkenyl, hydroxy(1C-2C)alkyl, (1C-2C)alkoxy(1C-3C)alkyl or aryl. These compounds can be used for estrogen receptor .beta. selective medical treatments.