Hydroxyalkyl and aryl or heterocyclic substituted-4,5-dihydropyridazin(2H)-3-ones and diazabicyclo-ene-ones e.g., 6-(p-chloro-phenyl)-2-(2-hydroxybutyl)-4,5-dihydropyridazin(2H)-3-on e are prepared by condensing 1-hydrazino-2-alkanols with aryl or heterocyclic-.gamma.-keto acids and are useful as central nervous system depressants.
The present invention provides new pyridazinones of the formula ##STR1## where R is alkyl; R.sub.1 and R.sub.2 are halo, alkyl, alkoxy, amino; nitro or trifluoromethyl; R.sub.3 is hydrogen, hydroxy, or acyloxy; R.sub.4 is hydrogen or alkyl; and R.sub.5 is hydroxy or acyl; which are useful as central nervous system depressants.
Hydroxyalkyl substituted-4,5-dihydropyridazin(2H)-3-ones and
申请人:Sandoz, Inc.
公开号:US04136184A1
公开(公告)日:1979-01-23
Hydroxyalkyl and aryl or heterocyclic substituted-4,5-dihydropyridazin(2H)-3-ones and diazabicyclo-ene-ones e.g., 6-(p-chlorophenyl)-2-(2-hydroxybutyl)-4,5-dihydropyridazin(2H)-3-one are prepared by condensing 1-hydrazino-2-alkanols with aryl or heterocyclic-.gamma.-keto acids and are useful as central nervous system depressants.