COMPOSITIONS AND METHODS OF INHIBITING RETINAL DEGENERATION
申请人:Anderson Robert E.
公开号:US20130225694A1
公开(公告)日:2013-08-29
Nitrone-based compositions are disclosed that may be utilized for the prevention and treatment of a variety of ophthalmic diseases or conditions where RPE65 protein isomerohydrolase is implicated. Methods of production and use of said nitrone-based compositions, as well as pharmaceutical and ophthalmic compositions containing same, are disclosed.
Synthesis and characterization of phenyl-substituted C-phenyl-N-tert-butylnitrones and some of their radical adducts
作者:Randall D. Hinton、Edward G. Janzen
DOI:10.1021/jo00035a020
日期:1992.4
Synthesis of C-phenyl-N-tert-butylnitrone (PBN) and several of its analogues with substituents in the 2-, 3-, or 4-position on the phenyl ring is described. While a one-pot reduction/condensation method proved suitable for most compounds, it was necessary to prepare some examples by direct condensation or through oxidation of the appropriate imine. The H-1 NMR data for the 3-X- and 4-X-PBN's can be correlated with the Hammett equation. For the 3-X series DELTA-delta for the alpha-proton correlates best with sigma(+) and has a correlation coefficient of 0.90. For the 4-X series a dual substituent parameter equation using sigma(R)0 gives the best correlation with r = 0.99. The hyperfine splitting constants (hfsc's) of the HO. and HOO. adducts of several substituted PBN's are also included and their correlation with the Hammett equation is discussed.
Synthesis, antioxidant and neuroprotective analysis of diversely functionalized α-aryl-N-alkyl nitrones as potential agents for ischemic stroke therapy
heteroaryl-N-alkyl nitrones as potential agents for stroke treatment. The majority of nitrones compete with DMSO for hydroxyl radicals, and most of them are potent lipoxygenase inhibitors. Cell viability-related (MTT assay) studies clearly showed that nitrones 1–3 and 10 give rise to significant neuroprotection. When compounds 1–11 were tested for necrotic cell death (LDH release test) nitrones 1–3, 6, 7, and