HETEROCYCLIC COMPOUNDS,METHOD FOR PREPARING SUCH COMPOUNDS AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

The compounds of formula IMAGE wherein Z is a splittable ether group, R1 and R2 independently are ethyl and n-propyl radicals, in racemic form having the relative configuration 4aR*, 5aS* or an optically active form having the absolute configuration 4S, 5aR, are useful as intermedients for the preparation of pharmaceuticals.