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
作者:Ce Yi、Gang Xing、Siqi Wang、Xiaoran Li、Yichuang Liu、Jinyan Li、Bin Lin、Anthony Yiu-Ho Woo、Yuyang Zhang、Li Pan、Maosheng Cheng
DOI:10.1016/j.bmc.2019.115178
日期:2020.1
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 selective agonists of the β2-adrenoceptor
提出了一系列具有2-(1-氨基-1-羟乙基)-6-羟基-1,4-苯并恶嗪-3(4H)-一个部分的β2-肾上腺素受体激动剂。通过基于细胞的测定来表征化合物对人β2-肾上腺素能受体和β1-肾上腺素能受体的刺激作用。在分离的豚鼠气管上测试了它们的平滑肌松弛活性。发现大多数化合物是β2-肾上腺素能受体的有效和选择性激动剂。其中一种化合物(R)-18c具有很强的β2-肾上腺素受体激动作用,EC50值为24 pM。它产生了与奥洛他特罗相同的充分而有效的气道平滑肌松弛作用。在体外豚鼠气管支气管扩张模型中,它的起效时间为3.5分钟,作用时间超过12小时。