Orally Active CCR5 Antagonists as Anti-HIV-1 Agents 2: Synthesis and Biological Activities of Anilide Derivatives Containing a Pyridine N-Oxide Moiety
作者:Masaki Seto、Yoshio Aramaki、Hiroshi Imoto、Katsuji Aikawa、Tsuneo Oda、Naoyuki Kanzaki、Yuji Iizawa、Masanori Baba、Mitsuru Shiraishi
DOI:10.1248/cpb.52.818
日期:——
4-[2-(butoxy)ethoxy]phenyl group enhanced the activity in the binding assay. In addition, introduction of a 3-trifluoromethyl group on the phenyl group of the anilide moiety led to greatly increased activity in the HIV-1 envelope-mediated membrane fusion assay. In particular, compound (S)-5s showed the most potent CCR5 antagonistic activity (IC(50)=7.2 nM) and inhibitory effect (IC(50)=5.4 nM) in the
为了开发口服活性CCR5拮抗剂,我们研究了含有新的极性取代基(例如膦酸酯,氧化膦或吡啶N-氧化物部分)的1-苯并benzo庚因衍生物,以取代先前报道的季铵部分。在这些化合物中,2-(α-羟基苄基)吡啶N-氧化物5e在大鼠中表现出中等的CCR5拮抗活性并具有可接受的药代动力学特征。随后进行了化学修饰,发现具有(S)-构型羟基的化合物(S)-5f比(R)-异构体更具活性。用具有4- [2-(丁氧基)乙氧基]苯基的1-苯并ze庚因环替换具有4-甲基苯基的1-苯并x庚因环增强了结合测定中的活性。此外,在苯胺部分的苯基上引入3-三氟甲基导致HIV-1包膜介导的膜融合测定的活性大大提高。特别是,化合物(S)-5s在融合试验中显示出最强的CCR5拮抗活性(IC(50)= 7.2 nM)和抑制作用(IC(50)= 5.4 nM),并且在大鼠中具有良好的药代动力学特性。