Herbicidal and plant growth regulant diphenylpyridazinones
申请人:DIAMOND SHAMROCK CORPORATION
公开号:EP0046069A1
公开(公告)日:1982-02-17
Novel compounds of the general formula
as well as novel compositions thereof and methods of using same are described. These compounds have been found to be valuable for controlling. modifying and inhibiting the growth of plants.
A series of novel O-aryl-N-methylmorphinans (7-19) were synthesized by the Ullmann reaction from levorphanol (4) in our search for a synthetic codeine (2) substitute with reduced addition liability. The compounds were evaluated for antinociceptive potency and receptor binding affinity. Among these compounds, (-)-3-phenoxy-N-methylmorphinan (7) is an orally active analgesic comparable in potency to codeine (2), which exhibits decreased physical dependence liability and longer duration of action.