Combining a Solution-Phase Derived Library with In-Situ Cellular Bioassay: Prompt Screening of Amide-Forming Minilibraries Using MTT Assay
作者:Li-Wu Chiang、Kai Pei、Shao-Wei Chen、Ho-Lien Huang、Kun-Ju Lin、Tzu-Chen Yen、Chung-Shan Yu
DOI:10.1248/cpb.57.714
日期:——
We constructed a minilibrary using a solution-phase synthesis through coupling of three core amino compounds (5′-amino-5′-deoxy uridine, 5′-amino-2′,5′-di-deoxy arabinosyl uridine, and butan-1-amine) with 30 carboxylic acids via amide bond formation. The simplified structural core compound butan-1-amine was selectively coupled with 9 carboxylic acids as control. 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay of the crude mixtures showed that analogues derived from fenbufen, butylfenbufen C15; ethacrynic acid, butyl ethacrynic amide C18; and sphingosines, Sph-1, Sph-2 and U27 had an increased cytotoxicity against MCF-7 cells as well as A549 cells. Structural elucidation with molecular docking suggested that cytotoxicity of these compounds is mainly due to the inhibition of enzymes regulating cellular apoptosis.
我们通过三种核心氨基酸化合物(5'-氨基-5'-脱氧尿苷、5'-氨基-2',5'-二脱氧阿糖尿苷和丁胺)与30种羧酸通过酰胺键形成,采用溶液相合成方法构建了一个微型库。简化的结构核心化合物丁胺选择性地与9种羧酸进行了耦合作为对照。对粗混合物的3-(4,5-二甲基-2-噻唑基)-2,5-二苯基-2H-四唑溴盐检测显示,来自非诺洛芬、丁基非诺洛芬C15;依他尼酸、丁基依他尼酸酰胺C18;以及鞘氨醇、Sph-1、Sph-2和U27的类似物对MCF-7细胞以及A549细胞表现出增强的细胞毒性。通过分子对接进行结构阐明表明,这些化合物的细胞毒性主要由于抑制调控细胞凋亡的酶。