Discovery of chiral N-2′-aryletheryl-1′-alkoxy-ethyl substituted arylisoquinolones with anti-inflammatory activity from the nucleophilic addition reactions of the thiophenols and oxazolinium
European Journal of Medicinal Chemistry(2021)
摘要
Herein we disclosed the novel nucleophilic addition reactions of the thiophenols and oxazolinium (DCZ0358) to produce N-2′-aryletheryl-1′-alkoxy-ethyl substituted arylisoquinolones. After evaluating the anti-inflammatory activity in vitro, 2d was found having significant anti-TNFα activity. Through the amplified synthesis of 2d, four monomers (3a-b and 4a-d) were obtained by chiral separation of the product. The reaction mechanism was proposed and explored by the control experiments. However, only the R-stereoisomers 3b and 4b have significant anti-TNFα activity in vitro (IC50 = 56 and 14 nM, respectively). Moreover, 4b exerts potent therapeutic effects on ulcerative colitis in vivo (30 mg/kg bw, qd, i. g.). The subsequent bio-target exploration of compound 4b via molecular docking and the experimental validation disclosed that 4b has 3-fold selectivity of binding activity on estrogen receptor (ER) beta (β) (Ki = 760.86 nM) vs. alpha (α) (Ki = 2320.58 nM). Thus, it provides a novel type of non-steroidal leads for developing anti-inflammatory drugs.
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关键词
Anti-inflammatory activity,TNFα,ERβ,IBD,Arylisoquinolones
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