Structure−Activity Relationships of the 7-Substituents of 5,4‘-Diamino-6,8,3‘-trifluoroflavone, a Potent Antitumor Agent
作者:Tsutomu Akama、Hiroyuki Ishida、Uichiro Kimura、Katsushige Gomi、Hiromitsu Saito
DOI:10.1021/jm970728z
日期:1998.6.1
and 7-aminomethyl (12f) derivatives were found to exhibit comparable or superior antitumor activity to compound 1b against MCF-7 cells both in vitro and in vivo (po administration). In particular, compounds 9e,g,j, and 12f were sufficiently water-soluble as compared with 1b which hardly solubilizes in water. A lipophilic 7-(hexanoyloxy)methyl derivative (9c) was also found to exhibit strong antitumor
最近,我们报道了5,4'-二氨基-6,8,3'-三氟黄酮(1b)在体外和体内对某些类型的人类癌细胞系均表现出强大的抗肿瘤活性。由于1b的先导化合物5,4'-二氨基黄酮(1a)的抗增殖活性是通过添加芹菜素调节的,因此我们假设7位对于与假定的靶分子的相互作用很重要。基于该假设,研究了1b的7位取代基的构效关系。结果发现7-甲基(7a),7-羟甲基(7l),7-(酰氧基)甲基(9a,c,e,g,j)和7-氨基甲基(12f)衍生物具有可比性或在体外和体内(口服给药)对化合物1b的抗肿瘤活性均优于化合物1b。特别是化合物9e,g,j 与1f相比,b和12f具有充分的水溶性,而1b几乎不溶于水。还发现亲脂性的7-(己酰氧基)甲基衍生物(9c)尤其在体内表现出很强的抗肿瘤活性。由于作用方式和靶分子未知,因此机理研究在将来将很重要。