As an important strategy, including incorporation of more than active core in one molecule, for finding potent candidates against cancer cells, a number of functionalized pyrazolopyridin derivatives linked to oxadiazole, dioxolane, acyclic sugar and fluorene ring systems, were synthesized through heterocyclization reactions. The derived sugar hydrazone and the corresponding acyclic C-nucleoside analog in addition to acyclic N-nucleoside were also prepared. The behavior of the afforded compounds as possible cytotoxic agents against human HTC116 and MCF7 cancer cells was investigated and the results showed that compounds 11-13 showed the highest activities against the two cancer cells. Other compounds revealed a type of selectivity toward one cancer cell while the activity was relatively lost against the other cancer cell line.
作为一种重要的策略,包括在一个分子中加入多个活性核心,以寻找有效的抗癌候选化合物,通过杂环化反应合成了一些与噁二唑、二
氧戊环、无环糖和
芴环系统相连的功能化
吡唑并
吡啶衍生物。此外,还制备了衍生的糖腙和相应的无环 C 核苷类似物以及无环 N 核苷。结果表明,化合物 11-13 对这两种癌细胞的活性最高。其他化合物显示出对一种癌细胞的选择性,而对另一种癌细胞的活性则相对减弱。