Several polyenylidene thiazolidinedione or 2-thioxo-4-thiazolidinone derivatives were synthesized and their retinoidal activities were examined in terms of the differentiation-inducing ability towards human promyelocytic leukemia HL-60 cells and inhibitory effect on interleukin (IL)-1α-induced IL-6 production in MC3T3-E1 cells.Compounds containing a trimethylcyclohexenyl ring induced HL-60 cell differentiation with weaker activity than retinoic acid (1a) by one or two orders of magnitude. The thiazolidinedione derivatives (2, 5, 7) showed stronger activity than the corresponding 2-thioxo-4-thiazolidinone derivatives (3, 6, 8). The effects of a retinoid antagonist(LE540) and synerists (retinoid X receptor (RXR) agonists, HX600 or HX630) on the activities of thiazolidine derivatives indicate that these compounds elicit their activities through the nuclear retinoic acid receptors (RARs).All the thiazolidines examined also inhibited IL-1α-induced IL-6 production with IC50 values of 10 nM order. The retinoidal activities of the thiazolidines are significant, considering that replacement of the carboxylic acid in retinoid structures with bioisosteric functional groups is generally ineffective, as seen in the structure-activity relationships of retinoidal benzoic acids.
合成了几种聚烯叉
噻唑烷二酮或2-
硫代-4-
噻唑烷酮衍
生物,并通过对人早幼粒细胞白血病HL-60细胞的分化诱导能力和对白细胞介素(IL)-1α诱导的IL-的抑制作用来检测其类
视黄醇活性。 MC3T3-E1 细胞中产生 6。含有三甲基
环己烯基环的化合物可诱导 HL-60 细胞分化,其活性比
视黄酸 (1a) 弱一或两个数量级。
噻唑烷二酮衍
生物(2,5,7)比相应的2-
硫代-4-
噻唑烷酮衍
生物(3,6,8)表现出更强的活性。类
维生素A拮抗剂(LE540)和增效剂(类
维生素A X受体(RXR)激动剂,HX600或HX630)对
噻唑烷衍
生物活性的影响表明这些化合物通过核
视黄酸受体(RAR)激发其活性。所有
噻唑烷类化合物研究还抑制了 IL-1α 诱导的 IL-6 产生,IC50 值为 10 nM 量级。考虑到用
生物等排官能团取代类
维生素A结构中的
羧酸通常是无效的,
噻唑烷的类
维生素A活性是显着的,如类
维生素A
苯甲酸的结构-活性关系中所见。