| abstract |
(57) Abstract: Compounds of formula (I) as active ingredient (wherein, R 'is a saturated alkyl of 3 to 5 carbon atoms, each R is -NO 2 or -NH 2, or independently - NHCOCH 3 and n is 1 or 2). Some of these compounds are new. Also disclosed are their preparation processes, as well as their use in the manufacture of a medicament for treating conditions characterized by progressive loss of the central nervous system (eg, Parkinson's disease or Alzheimer's disease). |