Synthesis and Cytotoxic Evaluation of Cycloheximide Derivatives as Potential Inhibitors of FKBP12 with Neuroregenerative Properties
作者:Claudia Christner、Ralf Wyrwa、Silvia Marsch、Gerhard Küllertz、Ralf Thiericke、Susanne Grabley、Dieter Schumann、Gunter Fischer
DOI:10.1021/jm991038t
日期:1999.9.1
On the basis of the new finding that the protein synthesis inhibitor cycloheximide (1, 4-[2-(3, 5-dimethyl-2-oxocyclohexyl)-2-hydroxyethyl]-2,6-piperidinedione) is able to competitively inhibit hFKBP12 (K(i) = 3.4 microM) and homologous enzymes, a series of derivatives has been synthesized. The effect of the compounds on the activity of hFKBP12 and their cytotoxicity against eukaryotic cell lines (mouse
基于这一新发现,蛋白质合成抑制剂环己酰亚胺(1,4- [2-(3,5-二甲基-2-氧代环己基)-2-羟乙基] -2,6-哌啶二酮)能够竞争性地抑制hFKBP12 (K(i)= 3.4 microM)和同源酶,已合成了一系列衍生物。确定了化合物对hFKBP12活性的影响及其对真核细胞系(小鼠L-929成纤维细胞,K-562白血病细胞)的细胞毒性。结果,通过N-取代戊二酰亚胺部分鉴定出几种毒性较小或无毒的环己酰亚胺衍生物,它们在抑制hFKBP12方面表现出的IC(50)值在22.0-4.4 microM范围内。在这些化合物中,环己酰亚胺-N-(乙醇酸乙酯)(10,K(i)= 4.1 microM),其对FKBP12的抑制作用与环己酰亚胺(1)相当。被发现对真核蛋白质合成造成大约1000倍的弱抑制作用(IC(50)= 115 microM)。环己酰亚胺-N-(乙醇酸乙酯)(10)能够以30 mg