Synthesis, Antimalarial Properties, and SAR Studies of Alkoxyurea-Based HDAC Inhibitors
作者:Finn K. Hansen、Tina S. Skinner-Adams、Sandra Duffy、Linda Marek、Subathdrage D. M. Sumanadasa、Krystina Kuna、Jana Held、Vicky M. Avery、Katherine T. Andrews、Thomas Kurz
DOI:10.1002/cmdc.201300469
日期:2014.3
Histone deacetylase (HDAC) inhibitors are an emerging class of potential antimalarial drugs. We investigated the antiplasmodial properties of 16 alkoxyurea‐based HDACinhibitors containing various cap and zinc binding groups (ZBGs). Ten compounds displayed sub‐micromolar activity against the 3D7 line of Plasmodium falciparum. Structure–activity relationship studies revealed that a hydroxamic acid ZBG
组蛋白脱乙酰基酶(HDAC)抑制剂是一类新兴的潜在抗疟药。我们研究了16种基于烷氧基脲的HDAC抑制剂的抗血浆特性,这些抑制剂含有各种帽和锌结合基团(ZBG)。十种化合物对恶性疟原虫的3D7品系表现出亚微摩尔活性。结构与活性之间的关系研究表明,异羟肟酸ZBG对于抗疟原虫活性至关重要,并且将大分子烷基取代基引入帽基团可增强抵抗无性血阶段寄生虫的能力。我们还证明了所选化合物可导致恶性疟原虫组蛋白H4过度乙酰化,表明抑制了一种或多种PfHDAC。为了评估烷氧基脲基HDAC抑制剂对正常哺乳动物细胞的寄生虫的选择性,评估了代表性化合物对新生儿包皮成纤维细胞(NFF)的细胞毒性。最活跃的化合物,6 - ((3-(4-(叔丁基)苯基)脲基)氧基) - ñ -hydroxyhexanamide(1e中,Pf的3D7 IC 50:0.16μ中号)为31倍的毒性对抗无性血液阶段要比正常哺乳动物细胞快。此外,四