C1 and N5 derivatives of cerpegin: Synthesis of a new series based on structure–activity relationships to optimize their inhibitory effect on 20S proteasome
作者:Anna Hovhannisyan、The Hien Pham、Dominique Bouvier、Lixian Qin、Gagik Melikyan、Michèle Reboud-Ravaux、Michelle Bouvier-Durand
DOI:10.1016/j.bmcl.2013.02.079
日期:2013.5
Thirty-two new derivatives of cerpegin (1,1,5-trimethylfuro[3,4-c]pyridine-3,4-dione) were designed and synthesized in high yield by a new method, combining several C1 and N5 substituents. All compounds were tested for their inhibitory effect on the CT-L, T-L and PA proteolytic activities of a purified mammalian 20S proteasome. Only one molecule inhibited both CT-L and PA activities. Sixteen molecules
设计和合成了一些新的十二种cerpegin的新衍生物(1,1,5-三甲基呋喃[3,4- c ]吡啶-3,4-二酮),并结合了多个C 1和N 5取代基。测试所有化合物对纯化的哺乳动物20S蛋白酶体的CT-L,TL和PA蛋白水解活性的抑制作用。只有一个分子同时抑制CT-L和PA的活性。16个分子在微摩尔范围内特异性抑制PA,其中14个分子的IC 50值约为5μM,另外两个分子的IC 50值值接近2μM。除了一种情况,钙蛋白酶I和组织蛋白酶B均未受到抑制。计算机对接表明,相对于C 1取代基的化学性质,最有效的化合物与β1催化位点(PA活性)结合的独特模式。