Development of Novel Benzodiazepine‐Based Peptidomimetics as Inhibitors of Rhodesain from
<i>Trypanosoma brucei rhodesiense</i>
作者:Carla Di Chio、Santo Previti、Giorgio Amendola、Sandro Cosconati、Tanja Schirmeister、Maria Zappalà、Roberta Ettari
DOI:10.1002/cmdc.202000158
日期:2020.6.4
Starting from the reversible rhodesain inhibitors 1 a –c , which have K i values towards the target protease in the low‐micromolar range, we have designed a series of peptidomimetics, 2 a –g , that contain a benzodiazepine scaffold as a β‐turn mimetic; they are characterized by a specific peptide sequence for the inhibition of rhodesain. Considering that irreversible inhibition is strongly desirable
从可逆的罗德萨因抑制剂1 a – c开始,它们在低微摩尔范围内对目标蛋白酶具有K i值,我们设计了一系列肽模拟物2 a – g,其中包含苯并二氮杂物骨架作为β-turn模拟物;它们的特征在于用于抑制罗德沙星的特定肽序列。考虑到对于寄生目标,强烈需要不可逆的抑制作用,因此引入了用作迈克尔受体的乙烯基酯部分作为战斗部。该部分被功能化以评估可以容纳该取代基的相应酶口袋的大小。通过这项研究,我们确定了一种不可逆的罗得沙因抑制剂(即2 g),其k第二值是90 000 M -1 min -1,在低微摩尔范围内表现出抗锥虫活性(EC 50= 1.25μM),在治疗人类非洲锥虫病(HAT)的药物发现过程中,这可能被认为是有前途的先导化合物。