As a continuation of our SAR studies of dipeptidyl aspartyl-fmk as caspase inhibitors, we explored the replacement of the P(2) amino acid by a 2-aminoaryl acid or other non-natural amino acids. Several of these compounds, such as 6l and 6p, were found to have good activities with inhibition potencies of around 100 nM in a caspase-3 enzyme assay. EP1113, Z-Val-(2-aminobenzoyl)-Asp-fmk (9b), is identified
作为我们对作为
天冬氨酸蛋白酶抑制剂的二肽基天冬
氨酰-fmk的
SAR研究的延续,我们探索了用2-
氨基芳基酸或其他非天然
氨基酸替代P(2)
氨基酸。在caspase-3酶分析中,发现其中的几种化合物(例如6l和6p)具有良好的活性,抑制力约为100 nM。EP1113 Z-Val-(2-
氨基苯甲酰基)-Asp-fmk(9b)被确定为有效的广谱胱天蛋白酶抑制剂,在不同的半胱天冬酶中IC(50)值为6-60 nM。EP1113在细胞凋亡保护试验中也具有良好的活性。