Specific inhibitors of tyrosine-specific protein kinase. I. Synthesis and inhibitory activities of .ALPHA.-cyanocinnamamides.
作者:TADAYOSHI SHIRAISHI、KEIJI KAMEYAMA、NAOHIRO IMAI、TAKESHI DOMOTO、IKUO KATSUMI、KIYOSHI WATANABE
DOI:10.1248/cpb.36.974
日期:——
A series of α-cyanocinnamamide derivatives was synthesized and evaluated for inhibitory activity against tyrosine-specific protein kinase using intact plasma membrane fractions from an epidermoid carcinoma cell line, A-431 cells. Among these compounds, several novel α-cyano-4-hydroxy-3, 5-disubstituted cinnamamide derivatives, e.g., α-cyano-3-ethoxy-4-gtdrixt-5-phenyl-thiomethylcinnamamide (ST 638), showed potent inhibitory activity. The studies on the structure-activity relationship revealed that the presence of the hydroxy group at the 4 position and the double bond in the α-cyano-4-hydroxycinnamamide skeleton was important for potent inhibitory activity, and that the presence of hydrophobic groups at the 3 and 5 positions on the benzene ring also enhanced the inhibitory activity of α-cyano-4-hydroxycinnamamide derivatives.
合成了一系列α-氰基肉桂酰胺衍生物,并使用来自表皮癌细胞系A-431细胞的完整细胞膜分馏评估其对酪氨酸特异性蛋白激酶的抑制活性。在这些化合物中,几种新型的α-氰基-4-羟基-3, 5-二取代肉桂酰胺衍生物,如α-氰基-3-乙氧基-4-二甲基-5-苯基-硫甲基肉桂酰胺(ST 638),表现出强大的抑制活性。关于结构-活性关系的研究表明,在α-氰基-4-羟基肉桂酰胺骨架中,4位的羟基和双键的存在对于有效的抑制活性至关重要,而在苯环的3位和5位上存在疏水基团也增强了α-氰基-4-羟基肉桂酰胺衍生物的抑制活性。