3-(4-Aroyl-1-methyl-1<i>H</i>-2-pyrrolyl)-<i>N</i>-hydroxy-2-propenamides as a New Class of Synthetic Histone Deacetylase Inhibitors. 2. Effect of Pyrrole-C<sub>2</sub> and/or -C<sub>4</sub> Substitutions on Biological Activity
作者:Antonello Mai、Silvio Massa、Ilaria Cerbara、Sergio Valente、Rino Ragno、Patrizia Bottoni、Roberto Scatena、Peter Loidl、Gerald Brosch
DOI:10.1021/jm030990+
日期:2004.2.1
pyrrole-C2 ethene chains of 1a-c, which were replaced with methylene, ethylene, substituted ethene, and 1,3-butadiene chains (compounds 2). Biological results clearly indicated the unsubstituted ethene chain as the best structural motif to get the highest HDAC inhibitory activity, the sole exception to this rule being the introduction of the 1,3-butadienyl moiety into the 1a chemical structure (IC50(2f)
先前的SAR研究(第1部分:Mai,A .;等人,J。Med。Chem。2003,46,512-524)在3-(- 4-苯甲酰基-1-甲基-1H-吡咯-2-基)-N-羟基-2-丙烯酰胺(1a)突出显示了其4-苯基乙酰基(1b)和4-肉桂酰基(1c)类似物是抑制玉米的更有效化合物体外HD2活性。在本文中,我们研究了化学取代对1a-c的吡咯-C2乙烯链进行的化学取代对抗HD2活性的影响,这些链被亚甲基,乙烯,取代的乙烯和1,3-丁二烯链(化合物2)。生物学结果清楚地表明,未取代的乙烯链是获得最高HDAC抑制活性的最佳结构基序,唯一的例外是引入了1,3-丁二烯基部分变成1a化学结构(IC50(2f)= 0.77 microM; IC50(1a)= 3.8 microM)。化合物3的IC50值(制备为1b的同系物)显示,吡咯C-(4)位置的苯和羰基之间的APHA模板很好地接受了2至5个亚甲基的烃间