1-O-acetylated pentose sugar derivatives were condensed with silylated 4-amino-5-oxopyrido[2,3-d]pyrimidine, followed by protection, to afford a series of 4-amino-5-oxopyrido[2, 3-d]pyrimidine nucleosides. Further derivatizations provided an additional group of pyrido[2,3-d]pyrimidine nucleosides. These nucleosides were evaluated for in vitro cytotoxicity to human prostate cancer (HTB-81) and mouse melanoma
许多核苷类似物已被临床用作抗癌药物或已在临床研究中进行了评估,而新的核苷类似物继续显示出希望。在本文中,我们报告了一系列新的
吡啶并[2,3-d]
嘧啶核苷的合成和细胞毒性。通过两个步骤将2-
氨基-
3-氰基-4-甲氧基吡啶转化为4-
氨基-5-氧代
吡啶并[2,3-d]
嘧啶。将各种1-O-乙酰化戊糖衍
生物与甲
硅烷基化的4-
氨基-5-氧代
吡啶并[2,3-d]
嘧啶缩合,然后进行保护,得到一系列的4-
氨基-5-氧代
吡啶并[2, 3-d]
嘧啶核苷。进一步的衍生化提供了另外的
吡啶基[2,3-d]
嘧啶核苷基团。评估了这些核苷对人前列腺癌(HTB-81)和小鼠黑素瘤(B16)细胞以及正常人成纤维细胞(NHF)的体外细胞毒性。许多化合物(1a,b,2a-c,f,3f + 4d)对癌细胞具有明显的细胞毒性,其中4-
氨基-5-氧代-8-(β-D-
呋喃呋喃糖基)
吡啶并[2,3- d]
嘧啶(1b)是所有类型细胞中最有效的增殖
抑制剂(
EC(50):0