Synthesis and evaluation of 6-methylene-bridged uracil derivatives. Part 1: Discovery of novel orally active inhibitors of human thymidine phosphorylase
作者:Shingo Yano、Hideki Kazuno、Norihiko Suzuki、Tomohiro Emura、Konstanty Wierzba、Jun-ichi Yamashita、Yukio Tada、Yuji Yamada、Masakazu Fukushima、Tetsuji Asao
DOI:10.1016/j.bmc.2004.04.036
日期:2004.7
prepared as inhibitors of human thymidine phosphorylase (TP). To enhance the in vivo antitumor activity of fluorinated pyrimidine 2'-deoxyribonucleosides such as 2'-deoxy-5-(trifluoromethyl)uridine (F(3)dThd), a potent TP inhibitor preventing their degradation to an inactive compound, has become a target of medicinal chemistry. We present here the synthesis and evaluation of novel human TP inhibitors. Introduction
已经制备了一系列新型的6-亚甲基桥接的尿嘧啶衍生物作为人胸苷磷酸化酶(TP)的抑制剂。为了增强氟化嘧啶2'-脱氧核糖核苷如2'-脱氧-5-(三氟甲基)尿苷(F(3)dThd)的体内抗肿瘤活性,一种有效的TP抑制剂可防止其降解为惰性化合物。药物化学的目标。我们在此介绍新型人TP抑制剂的合成和评估。与已知的TP抑制剂6-氨基-5-氯尿嘧啶相比,在5-氯尿嘧啶的6-位引入N-取代的氨基甲基侧链具有改善的水溶性和增强的抑制活性。口服给药后,化合物42在小鼠中被合理地很好地吸收。当与F(3)dThd结合使用时,化合物42通过增加前者的最大血浆浓度来发挥其TP抑制作用,这在猴子实验中得到了证明。与单独使用F(3)dThd相比,在携带人肿瘤异种移植物的小鼠中,药代动力学特征的积极变化伴随着该组合体内抗肿瘤活性的增强。生化和药理作用似乎都符合预期的概念。