| abstract |
This invention covers a compound of the formula <IMAGE> wherein R is hydrogen, lower alkyl or a pharmaceutically acceptable, non-toxic salt of a compound wherein R is hydrogen; X is hydrogen, halo, trifluoromethyl, lower alkyl or lower alkoxy, Y is lower alkyl or <IMAGE> wherein Z is hydrogen, halo, methyl, methoxy or trifluoromethyl; and the wavy lines represent the alpha or beta configuration with the proviso that when one wavy line is alpha the other is beta . |