This invention relates to pharmacologically active compounds of the formula: ##STR1## wherein Z is trans--CH.dbd.CH, C.tbd.C; or CH.sub.2 --CH.sub.2 ; M is H or lower alkyl; n is an integer of from 2 to 5; X is alkyl; W is H or OR, wherein R is H, acyl, or alkyl; each Y is H, OH or alkoxy; and to novel intermediates and processes useful in the production thereof.