L = quinoline, 2) were synthesized by employing the AgNO(3)/DMF method. Reactions of these species with 5'-guanosine monophosphate (5'-GMP) and 5'-cytidine monophosphate (5'-CMP) were used to simulate potential second binding steps on DNA. Guanine-N7 proved to be the kinetically preferred binding site for both 1 and 2. Reactions with 2 proceeded significantly slower than those with 1 under the same
含有平面氮碱的非经典反
铂络合物显示出与反式二
氨合
二氯铂(II)(trans-DDP)不同的
生物活性。为寻找此类化合物的作用机理,使用一维和反式对D-DDP和反式-[PtCl(2)(NH(3))(
喹啉)](反式QUIN)的核碱基
化学进行了比较研究。 2D NMR光谱和分子建模技术。通过使用AgNO合成两个简单的单功能加合物反式[[PtCl(
9-乙基鸟嘌呤-N7)(NH(3))L] NO(3)(L = NH(3),1; L =
喹啉,2) (3)/
DMF方法。这些物质与5'-
鸟苷单
磷酸酯(5'-GMP)和5'-
胞苷单
磷酸酯(5'-
CMP)的反应被用来模拟DNA上潜在的第二步结合步骤。
鸟嘌呤-N7被证明是1和2的动力学首选结合位点。在相同条件下,与2的反应进行的速度明显慢于与1的反应。这些反应性差异归因于
喹啉对缔合取代反应的空间影响,
水解行为改变了2。这在2的2D NOESY光谱中观察到的
配体N