(1'R,6S)-(-)-1-(2'-hydroxy-1'-phenyl-ethyl)-6-n-propyl-piperidine-2-thione

(3R,8aR)-5-oxo-3-phenyl-2,3,6,7,8,8a-hexahydro-5H-oxazolo[3,2-a]pyridine

(1'R)-(-)-1-(2'-hydroxy-1'-phenyl-ethyl)-(1H)-pyridin-2-one

(1'R)-(-)-1-(2'-hydroxy-1'-phenyl-ethyl)-3,4-dihydro-(1H)-pyridin-2-one

(1'R,6S)-(+)-1-(2'-hydroxy-1'-phenyl-ethyl)-6-propyl-piperidin-2-one