Organometallic 3-(1<i>H</i>-Benzimidazol-2-yl)-1<i>H</i>-pyrazolo[3,4-<i>b</i>]pyridines as Potential Anticancer Agents
作者:Iryna N. Stepanenko、Maria S. Novak、Gerhard Mühlgassner、Alexander Roller、Michaela Hejl、Vladimir B. Arion、Michael A. Jakupec、Bernhard K. Keppler
DOI:10.1021/ic201704u
日期:2011.11.21
of 1H-pyrazolo[3,4-b]pyridine-3-carboxylic acids (1, 3) through the use of an inexpensive coupling reagent, N,N′-carbonyldiimidazole (CDI)). Stabilization of the 7b tautomer of methoxymethyl-substituted L3 by coordination to a metal(II) center, as well as the NMR spectroscopic characterization of two tautomers 7b-L3 and 4b′-L3 in a metal-free state are described. Structure–activity relationships with
六种通式为 [M II Cl(η 6 - p -cymene)(L)]Cl 的有机金属配合物,其中 M = Ru ( 11a , 12a , 13a ) 或 Os ( 11b , 12b , 13b ) 和 L = 3- (1 H -benzimidazol-2-yl)-1 H -pyrazolo[3,4- b ]pyridines ( L1 – L3) 已合成。后者被称为潜在的细胞周期蛋白依赖性激酶 (Cdk) 抑制剂。所有化合物都已通过元素分析、一维和二维 NMR 光谱、UV-vis 光谱、ESI 质谱和 X 射线晶体学进行了全面表征(11b和12b)。3-(1 H -benzimidazol-2-yl)-1 H - pyrazolo[3,4- b ]pyridines ( L1 – L3 )的多步合成,由其他研究人员报道,我们基本上已经修改(例如, 5-溴-1 H-吡唑并[3,4- b