2565-21-1Relevant articles and documents
Development of photoactivable glycerol-based coatings containing quercetin for antibacterial applications
Condat, Michael,Babinot, Julien,Tomane, Somia,Malval, Jean-Pierre,Kang, Inn-Kyu,Spillebout, Faustine,Mazeran, Pierre-Emmanuel,Lalevée, Jacques,Andalloussi, Samir Abbad,Versace, Davy-Louis
, p. 18235 - 18245 (2016/03/01)
The development of new antibacterial coatings (against Escherichia coli and Staphylococcus aureus) using a natural dye, quercetin, according to a green chemistry process was investigated. Quercetin was used as both a photosensitizer and antibacterial agent. The synthesized material was developed according to a cationic photopolymerization process under light irradiation. The photosensitizing mechanism involving quercetin and an iodonium-based cationic photoinitiator was described for the first time according to steady state photolysis and fluorescence experiments. The resulting coatings showed excellent adhesion on a stainless steel plate as demonstrated by nanoindentation and scratch tests, with a high thermal stability up to 375 °C. Finally, a primary investigation was conducted to assess the antibacterial properties of the glycerol-derived coatings against Escherichia coli and Staphylococcus aureus under light illumination. Electron paramagnetic resonance spectroscopy confirmed the generation of reactive oxygen species, such as singlet oxygen, which is responsible for inhibiting bacteria proliferation.
Glycosiderophores: Synthesis of tris-hydroxamate siderophores based on a galactose or glycero central scaffold, Fe(III) complexation studies
Neff, Christelle,Bellot, Francois,Waern, Jenny-Birgitta,Lambert, Francois,Brandel, Jeremy,Serratrice, Guy,Gaboriau, Francois,Policar, Clotilde
experimental part, p. 59 - 67 (2012/09/11)
A series of five new hexadentate tris-hydroxamate ligands based on a d-galactose or a glycerol scaffold have been synthesized. Protonation and ferric complex formation constants have been determined from solution studies by potentiometric and spectrophotometric titrations. All ligands form 1:1 Fe:L complexes. The calculated pFe values at pH 7.4 span over the range 19.2-23.0 depending on the scaffold and on the length of the spacers between hydroxamate and central scaffold and on the N-methyl substitution. This new kind of artificial siderophores based on a glycoscaffold is of interest as it opens up an easy way to modulate the pFe.
Synthesis of divalent β-(1→6)-branched (1→3)-glucohexaose and trivalent β-(1→6)-branched (1→3)-glucotriose
Wu, Zicheng,Kong, Fanzuo
, p. 2761 - 2768 (2007/10/03)
Hexaose, β-d-Glcp-(1→3)-[β-d-Glcp-(1→6)]-α-d- Glcp-(1→3)-β-d-Glcp-(1→3)-[β-d-Glcp-(1→6)] -β-d-Glcp, based dimers were synthesized by twofold glycosidation of the hexaosyl trichloroacetimidate with hexylene 1,6-diol, diethylene glycol and triethylene glycol, respectively. Meanwhile, a triose, β-1d-Glcp-(1→3) -[β-d-Glcp-(1→6)]-β-d-Glcp, based trimer was obtained by glycosidation of the triosyl trichloroacetimidate with a glycerol-derived triol scaffold.