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- W2060268206 abstract "Previously reported structure−activity relationships have shown two features for effective antitumor activity of titanium β-diketone complexes: (a) ligand asymmetry and (b) the presence of planar substitutents on the ligand. Mono- and dinuclear derivatives, studied with diffraction and DFT methods show that (a) is consistent with different Ti−O(β-diketonato) bond lengths, which are longer than Ti−O(oxo) and Ti−O(alkoxy) ones. π−π features observed in dinuclear derivatives correlate with strong reactivity of related complexes with DNA and support DNA intercalation by such planar groups, in agreement with (b). Large variation for Ti−O bond lengths and Ti−O−C bond angles in the ethoxy moiety is associated with the titanium withdrawing effect and oxygen bonding s character; it is confirmed through exploration of the Cambridge crystallographic database. This ethoxy geometrical flexibility also suggests versatile accommodation in protein pockets and/or other biological targets. Electrospray ionization mass spectrometry (ESI-MS) spectra show formation of di- and trinuclear Ti-4-acyl-5-pyrazolonato cationic oligomers. Hydrolysis/oligomerization is also described by NMR results." @default.
- W2060268206 created "2016-06-24" @default.
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- W2060268206 date "2007-08-11" @default.
- W2060268206 modified "2023-09-30" @default.
- W2060268206 title "Synthesis, Molecular Structure (X-ray and DFT), and Solution Behavior of Titanium 4-Acyl-5-pyrazolonates. Correlations with Related Antitumor β-Diketonato Derivatives" @default.
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- W2060268206 doi "https://doi.org/10.1021/ic700935x" @default.
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