Patent Document ID: 5583142
Application ID: 08369761
Patent Flag: 1

Claim One:
1. Compounds of general formula: ##STR23## where: Ar=phenyl or beta-naphthyl; R.sub.1 =one or more substituents of the Ar nucleus, and selected from the group consisting of H, CH.sub.3, CH.sub.2 --CH(CH.sub.3).sub.2, O--CH.sub.3, Cl, F, Br, CF.sub.3, NH.sub.2, S--CH.sub.3, CN, and NO.sub.2 R.sub.2 =H, CH.sub.3, C.sub.2 H.sub.5, CH(CH.sub.3).sub.2 ; R.sub.3 = ##STR24## where R.sub.4 =H, CH.sub.3, or C.sub.2 H.sub.5 ; R.sub.5 =H, or CH.sub.3 ; X=O, S, NH, NCH.sub.3, --CH=CH--, --C.ident.C--, or a single bond; Y=O, or NH, both in the racemic form and in the isomeric enantiomeric forms.