855342-01-7Relevant academic research and scientific papers
Multitarget-directed resveratrol derivatives: Anti-cholinesterases, anti-β-amyloid aggregation and monoamine oxidase inhibition properties against Alzheimer's disease
Pan, Long-Fei,Wang, Xiao-Bing,Xie, Sai-Sai,Li, Su-Yi,Kong, Ling-Yi
supporting information, p. 609 - 616 (2014/05/06)
Considering the complex pathogenesis factors of Alzheimer's disease (AD), the multitarget-directed ligand strategy is expected to provide superior effects to fight AD, instead of the classic one-drug-one-target strategy. Resveratrol, exhibiting important properties against AD, was suggested to be used as a starting compound for the treatment of AD. Based on these reasons, a series of resveratrol derivatives were designed, synthesized and biologically evaluated. Among them, compound 6r, exhibiting moderate cholinesterase inhibition activity (AChE, IC50 = 6.55 μM; BuChE, IC50 = 8.04 μM; SI = 1.23), significant inhibition of Aβ42 aggregation (57.78%, at 20 μM) and acceptable inhibitory activity against monoamine oxidases (MAO-A, IC50 = 17.58 μM; MAO-B, IC50 = 12.19 μM), was a potential anti-Alzheimer agent with balanced activities. Consequently, this study provided useful information for further development of resveratrol derivatives as multitarget-directed agents for AD therapy. This journal is the Partner Organisations 2014.
Nanostructured oligo(p-phenylene vinylene)/silicate hybrid films: One-step fabrication and energy transfer studies
Tajima, Keisuke,Li, Liang-Shi,Stupp, Samuel I.
, p. 5488 - 5495 (2007/10/03)
Novel hybrid materials containing silicate and charged oligo(p-phenylene vinylene) (OPV) amphiphiles were fabricated in one step by spin casting using evaporation-induced self assembly. The conjugated segments were substituted with trimethylammonium bromide groups at both termini, and tetraethyl orthosilicate served as the silicate precursor. X-ray diffraction scans of the hybrid films revealed Bragg diffraction peaks with d-spacings of 2.76 and 1.37 nm, indicating the presence of order in the hybrid structure. Optical properties of the hybrid films were characterized by UV-vis absorption and fluorescence spectra, and molecular orientation was characterized by IR spectroscopy. A rhodamine B derivative containing a triethoxysilane group was covalently incorporated into the silicate network of the films during the sol-gel reaction. Relative to disordered polymer films with identical organic composition, the ordered hybrid films revealed significantly enhanced emission from rhodamine B and also fluorescence quenching from OPV segments. These results indicate that the ordered and nanostructured environment leads to highly efficient energy transfer among organic components in these hybrid films.
