Abstract Seven compounds, forming intramolecular hydrogen bonds, mostly non-symmetric derivatives of [2,2′-bipyridyl]-3,3′-diol (BP(OH)2) were synthesised. Six of them were chosen for the further analysis. It was proved that the electron-donating (CH3) or electron withdrawing (COOH, COOCH3) substituent introduced next to the reactive proton transfer site (N-atom) may change the parameters of hydrogen
摘要 合成了7种形成分子内氢键的化合物,主要是[2,2'-联吡啶]-3,3'-二醇(BP(OH)2)的非对称衍生物。选择其中的六个进行进一步分析。已经证明,在反应性质子转移位点(N-原子)旁边引入的给电子(CH3)或吸电子(COOH,COO )取代基可以以可预测的方式改变氢桥的参数。执行了基态的 ab initio (GIAO-CHF/DZP//6-31 G∗∗) 和半经验 (PM3) 计算。将分子几何形状、Mulliken 净电荷、NMR 屏蔽常数与一些实验数据进行了比较。特别是,15N 核磁共振用于比较分子的两个内部 H 键的强度。
The invention relates to chemical compounds of the formula (I) or pharmaceutically acceptable salts thereof, which possess ALK5 (TGFβRl) inhibitory activity and are accordingly useful for their anti-cancer activity and thus in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of said chemical compounds, to pharmaceutical compositions containing them and to their use in the manufacture of medicaments for use in the production of an anti¬ cancer effect in a warm-blooded animal such as man.