inhibitory profile was observed for several compounds, which was comparable, if not superior, to that of 2. A promising cytotoxic activity was found for selected macrocycles against lung and colon cancer cell lines. Further elaboration of selected candidates led to compounds with an improved selectivity against HDAC6 over the other isozymes. Pair-fitting analysis was used to compare one of the best
非肽手性大环化合物是基于辛二酰
苯胺异羟
肟酸(2)(
SAHA,vorinostat)的类似物设计的,并针对11种组蛋白
脱乙酰基酶(H
DAC)同工型进行了评估。H
DACs帽区域中高度保守的关键
氨基酸残基的鉴定指导了基于亚油酰基的大环的设计,预计这些大环具有靶向整个H
DAC面板所需的最大通用亚结构。观察到了几种化合物的纳摩尔H
DAC抑制谱,即使不是更好,也可与2种相比。。发现针对肺癌和结肠癌
细胞系的选定大环化合物有希望的细胞毒性活性。进一步精制选定的候选物,使得化合物对H
DAC6的选择性优于其他同工酶。使用配对拟合分析将最佳候选之一与
天然四肽阿匹西丁进行比较,以定义一种通用药效团,该药效团可能在设计肽类大环化合物的替代物时作为有效的和同工型选择性
抑制剂。