Indanylpiperidines as melatonergic agents

A compound of Formula I:

• ##STR14## wherein:
• R is H, C.sub.1-7 alkoxy, halogen, hydroxyl, C.sub.1-4 haloalkoxy or C.sub.1-4 alkoxyphenyl C.sub.1-7 alkoxy;
• Y is hydrogen or halogen;
• Z is O or S;
• m is 1 or 2;
• and
• R.sup.1 is hydrogen, C.sub.1-6 straight or branched alkyl, C.sub.1-6 straight or branched haloalkyl, C.sub.2-8 alkylthioalkyl, C.sub.2-8 alkyloxyalkyl, C.sub.2-6 straight or branched alkenyl, C.sub.3-5 cycloalkyl, C.sub.3-5 cycloalkenyl, thienyl, furanyl, thiadiazolyl, pyrrolyl, C.sub.1-6 alkylthio or NR.sup.2 R.sup.3, in which R.sup.2 and R.sup.3 are independently hydrogen or C.sub.1-4 alkyl.