Mechanism and structure based design of inhibitors of AMP and adenosine deaminase
作者:Stephen D. Lindell、Simon Maechling、Robert Klein、Jörg Freigang、Bernd Laber、Lisa Blanazs、Merisa Leonhardt、Susanne Haupt、Thomas Petry、Richard L. Sabina
DOI:10.1016/j.bmc.2021.116272
日期:2021.8
levels of herbicidal activity. An enzyme mechanism-based approach has been used to design new inhibitors of AMPD starting from nebularine (6) and resulting in the synthesis of 2-deoxy isonebularine (16). This compound is a potent inhibitor of the related enzyme adenosine deaminase (ADA; IC50 16 nM), binding over 5000 times more strongly than nebularine. It is proposed that the herbicidal activity of
酶腺苷单磷酸脱氨酶 (AMPD) 的抑制剂显示出令人感兴趣的除草活性水平。一种基于酶机制的方法已被用于设计新的 AMPD 抑制剂,从 nebularine ( 6 ) 开始并合成 2-deoxy isonebularine ( 16 )。该化合物是相关酶腺苷脱氨酶 (ADA; IC 50 16 nM)的有效抑制剂,其结合强度是 nebularine 的 5000 多倍。提出化合物16的除草活性是由于植物中的5́-磷酸化产生AMPD抑制剂。随后,基于酶结构的方法被用于设计新的非核糖基AMPD抑制剂。最初的铅结构是由针对植物AMPD的虚拟图书馆的计算机筛选。第二步,通过更详细的分子模型进一步优化与 AMPD 的结合,产生2-(苄氧基)-5-(咪唑并[2,1-f][1,2,4]三嗪-7-基)苯甲酸( 36 ) (IC 50 300 nM)。该化合物不抑制 ADA,并且对植物显示出优于人类 AMPD