Potent and selective HDAC6 inhibitory activity of N-(4-hydroxycarbamoylbenzyl)-1,2,4,9-tetrahydro-3-thia-9-azafluorenes as novel sulfur analogues of Tubastatin A
作者:Rob De Vreese、Tom Verhaeghe、Tom Desmet、Matthias D'hooghe
DOI:10.1039/c3cc41422a
日期:——
Eight N-(4-hydroxycarbamoylbenzyl)-1,2,4,9-tetrahydro-3-thia-9-azafluorenes were efficiently prepared as sulfur analogues of Tubastatin A and thus evaluated as new HDAC6 inhibitors. All compounds exhibited potency against HDAC6, and four of them were active in the nanomolar range (IC50 = 1.9–22 nM). Further analysis revealed that the sulfone derivatives (designated as Tubathians) are superior to their non-oxidized sulfide analogues, and the two most active sulfones showed good to excellent HDAC6 selectivity compared to all other HDAC isoform classes.
八种 N-(4-羟基氨基甲酰基苄基)-1,2,4,9-四氢-3-硫杂-9-氮杂芴被有效地制备成 Tubastatin A 的硫类似物,并因此被评估为新的 HDAC6 抑制剂。所有化合物都对 HDAC6 具有抑制作用,其中四个化合物的活性在纳摩尔范围内(IC50 = 1.9-22 nM)。进一步的分析表明,砜类衍生物(被命名为 Tubathians)优于其非氧化的硫化物类似物,与所有其他 HDAC 同工酶类别相比,两种活性最强的砜类化合物显示出良好至卓越的 HDAC6 选择性。