1,2,3-Triazole-Containing Uracil Derivatives with Excellent Pharmacokinetics as a Novel Class of Potent Human Deoxyuridine Triphosphatase Inhibitors
作者:Hitoshi Miyakoshi、Seiji Miyahara、Tatsushi Yokogawa、Kanji Endoh、Toshiharu Muto、Wakako Yano、Takeshi Wakasa、Hiroyuki Ueno、Khoon Tee Chong、Junko Taguchi、Makoto Nomura、Yayoi Takao、Akio Fujioka、Akihiro Hashimoto、Kenjirou Itou、Keisuke Yamamura、Satoshi Shuto、Hideko Nagasawa、Masayoshi Fukuoka
DOI:10.1021/jm3004174
日期:2012.7.26
class of human dUTPase inhibitors, 1,2,3-triazole-containing uracil derivatives. Compound 45a, which possesses 1,5-disubstituted 1,2,3-triazole moiety that mimics the amide bond of tert-amide-containing inhibitor 6b locked in a cis conformation showed potent inhibitory activity, and its structure–activity relationship studies led us to the discovery of highly potent inhibitors 48c and 50c (IC50 = ∼0
脱氧尿苷三磷酸酶(dUTPase)已成为基于5氟尿嘧啶的联合化疗药物开发的潜在靶标。我们描述了一种新型的人类dUTPase抑制剂,含1,2,3-三唑的尿嘧啶衍生物的设计和合成。化合物45a具有1,5-二取代的1,2,3-三唑部分,该化合物模拟了锁定在顺式构象中的含叔酰胺的抑制剂6b的酰胺键,具有很强的抑制活性,其结构-活性关系研究使我们获得了成功发现高效抑制剂48c和50c(IC 50=〜0.029μM)。这些衍生物在体外显着增强了5-氟-2'-脱氧尿苷对HeLa S3细胞的生长抑制活性(EC 50 =〜0.05μM)。另外,由于引入了苄基羟基,化合物50c显示出显着改善的药代动力学特征,并且显着增强了5-氟尿嘧啶对小鼠乳腺癌MX-1异种移植模型的抗肿瘤活性。这些数据表明50c是与TS抑制剂联合用于癌症化学治疗的有希望的候选者。