Optionally substituted 3-(thio, sulfinyl or sulfonyl)-7,8-dihydro-(1Hor 2H)-imidazo[l,2-a]pyrazolo[4,3-e]pyrimidin-4(5H)-one or a substituted 3-(thio, sulfinyl or sulfonyl)-7,8,9-trihydro—(1Hor 2H)-pyrimido[l,2-a]pyrazolo[4,3-e]pyrimidin-4(5H)-one compounds or Compounds of Formula I, processes for their production, their use