トリオルガノホスフィン金(I)2-メルカプトベンゾエート錯体の合成・構造解析およびin vitro細胞毒性評価
Three [R₃PAu(2mba)] complexes (R = Et, Ph, Cy; 2mba = 2-mercaptobenzoate anion) were synthesized and fully characterized by ¹H, ¹³C, and ³¹P NMR spectroscopy. Solvent-dependent variation in ¹H spectra was attributed to competition between intramolecular and intermolecular hydrogen bonding. X-ray crystallographic analysis of the phenyl derivative revealed a linear P-Au-S coordination geometry and lattice association through a carboxylic acid dimer motif. Cytotoxicity was assessed against seven human tumor cell lines, with the complexes exhibiting moderate to very high activity. Notably, activity against the H226 non-small cell lung cancer line exceeded that of several established cytotoxic agents.
The gold(I) complexes adopt a linear P-Au-S coordination geometry and display cytotoxicity against human tumor lines; the precise molecular mechanism of cell killing was not elucidated in this study.
This is basic research at the cellular or molecular level. For human application, inhalation is the most promising delivery route, but inhalation carries explosion risk and concentration matters (empirical LFL of 10%; high-concentration devices are not recommended).
See also:
https://h2-papers.org/en/papers/18475878