The present invention is directed to novel compounds of the general formula ##STR00001## ##STR00002## wherein R is selected from the group consisting of hydrogen, a straight, branched or cyclic alkyl that may or may not be unsaturated, alkenyl groups, an acetyl group, a substituted acetyl groups, an alkoxy ether group or alkyl substituted alkoxy ether moieties with each R, other than hydrogen comprising from 1 to 10 carbon atoms; R.sup.1, R.sup.2 and R.sup.3 independently represent hydrogen, a C1-C4 alkyl group such as methyl and ethyl and in which one of the dashed lines is a double bond and the other dashed line is a single bond.