CHEN Jincan, LIAO Siyan, ZHENG Kangcheng. A DFT Study on the Hydrolysis Mechanism of the Anticancer Complex NAMIA under Acidic Condition[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2010,49(3):55-60.
CHEN Jincan, LIAO Siyan, ZHENG Kangcheng. A DFT Study on the Hydrolysis Mechanism of the Anticancer Complex NAMIA under Acidic Condition[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2010,49(3):55-60.DOI:
The density functional theory (DFT) combined with the conductorlike polarizable calculation model (CPCM) was used to investigated the first hydrolysis step under acidic condition of a Ru (III) complex [ImH][〖WTBX〗trans〖WTBZ〗RuCl4(DMSO)(Im)](NAMIA) and the first ruthenium anticancer complex that has entered clinical testing. Full geometry optimizations and frequency calculations for each transition states and intermediate species were carried out at the UB3LYP/(LanL2DZ+6-31G(d)) level in gas phase. Singlepoint energies were calculated at the UB3LYP/(LanL2DZ(f)+6-311++G(3df
2pd) level based on the optimized structures in acidic solution. The geometrical and electronic structures
and detailed energy profiles during the hydrolysis processes of the complex were investigated. It was found interestingly that the hydrolysis of DMSO ligand in acidic solution has thermodynamic preference over the hydrolysis of Cl atom
which was in good agreement with the experimental results. Thus this work can offer a significant theoretical reference for deeply understanding the hydrolysis mechanism of NAMIA.
关键词
NAMIA抗癌剂酸性条件水解机理密度泛函理论(DFT)
Keywords
NAMIAanticancer drugacidic conditionhydrolysis mechanismdensity functional theory (DFT)