The invention provides chroman compounds having formula 1 ##STR00001##
wherein R.sup.1 is (1C-4C)alkyl, (2C-4C)alkenyl or (2C-4C)alkynyl, and
independently R.sup.1 has a cis-orientation in relation to the exocyclic
phenyl group at the 2-position of the skeleton; R.sup.4 is H, Hal,
CF.sub.3, OH or (1C-2C)alkyloxy; R.sup.2, R.sup.3, and R.sup.5are
independently H, Hal, CF.sub.3, (1C-4C)alkyl, (2C-4C)alkenyl or
(2C-4C)alkynyl and prodrugs thereof for the manufacture of a medicine for
estrogen-receptor related treatments.