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
to plasmalemmal β2-adrenoceptors causing cAMP accumulation are widely used as bronchodilators in chronic respiratory diseases. Here, we designed and synthesized a group of 8-hydroxyquinolin-2(1H)-oneanalogues and studied their β2-agonistic activities with a cellular cAMP assay. Compounds B05 and C08 were identified as potent (EC50 < 20 pM) and selective β2-agonists among the compounds tested. They
[EN] PIPERIDINONE HERBICIDES<br/>[FR] HERBICIDES DE PIPÉRIDINONE
申请人:DU PONT
公开号:WO2016003997A1
公开(公告)日:2016-01-07
Disclosed are compounds of Formula 1, including all stereoisomers, N-oxides, and salts thereof: wherein R1, R2, R3, R2A, R3A, R4, R5, R6, Q1, Q2, Y1 and Y2 are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling undesired vegetation comprising contacting the undesired vegetation or its environment with an effective amount of a compound or a composition of the invention.
Discovery and Identification of Novel 5-Hydroxy-4<i>H</i>-benzo[1,4]oxazin-3-one Derivatives as Potent β<sub>2</sub>-Adrenoceptor Agonists through Structure-Based Design, Synthesis, and Biological Evaluation
optimizing β2-agonistic activity and selectivity remains essential for achieving favorable therapeutic outcomes. A structure-based molecular design workflow was employed to discover a novel class of β2 agonists featuring a 5-hydroxy-4H-benzo[1,4]oxazin-3-one scaffold, which potently stimulated β2 adrenoceptors (β2-ARs). Screening for the β2-agonistic activity and selectivity led to the identification of