Design, synthesis and biological evaluation of 8-(2-amino-1-hydroxyethyl)-6-hydroxy-1,4-benzoxazine-3(4H)-one derivatives as potent β2-adrenoceptor agonists
β2-adrenoceptor agonists with an 8-(2-amino-1-hydroxyethyl)-6-hydroxy-1,4-benzoxazine-3(4H)-one moiety is presented. The stimulatory effects of the compounds on human β2-adrenoceptor and β1-adrenoceptor were characterized by a cell-based assay. Their smooth muscle relaxant activities were tested on isolated guinea pig trachea. Most of the compounds were found to be potent and selectiveagonists of the β2-adrenoceptor
Pyridyl aminoethanols with animal growth promotion activity and a high degree of safety
申请人:Merck & Co., Inc.
公开号:EP0359313A1
公开(公告)日:1990-03-21
There are disclosed six pyridyl aminoethanol substituted on the amine with a substituted phenylalkyl group. The compounds are highly potent growth promotion agents for animals and compositions for such uses are also disclosed.