Synthesis of conjugates of lupane triterpenoids with chromane antioxidants and in vitro study of their influence on the production of nitrogen monoxide and on the arginase activity in activated macrophages
The invention relates the method of treatment or amelioration of mitochondrial disorders such as Alzheimer's disease, Parkinson's disease, Friedreich's ataxia (FRDA), cerebellar ataxias, Leber's hereditary optic neuropathy (LHON), mitochondrial myopathy, encephalopathy, lactacidosis, stroke (MELAS), Myoclonic Epilepsy with Ragged Red Fibers (MERFF), amyotrophic lateral sclerosis (ALS), motor neuron diseases, Huntington's disease, macular degeneration, and epilepsy, with chroman derivatives of Formula I or Formula II as described herein.
Deuterated analogues of α- and γ-CEHC, main urinary and plasma metabolites of vitaminE, can be traced and accurately determined quantitatively by MS in complex matrices. In that regard, here we report the first synthesis of rac-[D3]-γ-CEHC together with a simple route to 7a,8a-[D2]-γ-CEHC through the set up of efficient procedures for the preparation of the corresponding deuterated hydroquinone building
3,4-dihydrobenzopyran derivatives and medicinal uses thereof
申请人:Kuraray Co., Ltd.
公开号:US04728650A1
公开(公告)日:1988-03-01
There are provided novel 3,4-dihydrobenzopyran derivatives having anti-peptic ulcer, antitussive and/or expectorant activity. Also provided are medicinal uses of said 3,4-dihydrobenzopyran derivatives.
Chroman derivatives for the reduction of inflammation symptoms
申请人:——
公开号:US20040097433A1
公开(公告)日:2004-05-20
The present invention provides a composition comprising chroman derivatives, for use in the reduction of inflammatory markers associated with inflammation, particularly for the reduction of C-reactive protein (CRP) and for use in the treatment and/or amelioration of symptoms of inflammation.
Tocopherols are essential micronutrients for mammals widely known as potent lipid-soluble antioxidants that are present in cell membranes. Recent studies have demonstrated that most of the carboxychromanol (CEHC), a tocopherol metabolite, in the plasma exists primarily in sulfate- and glucuronide-conjugated forms. To gain insight into the enzymatic sulfation of tocopherols and their metabolites, a systematic investigation was performed using all 14 known human cytosolic sulfotransferases (SULTs). The results showed that the members of the SULT1 family displayed stronger sulfating activities toward tocopherols and their metabolites. These enzymes showed a substrate preference for γ-tocopherol over α-tocopherol and for γ-CEHC over other CEHCs. Using A549 human lung epithelial cells in a metabolic labeling study, a similar trend in the sulfation of tocopherols and CEHCs was observed. Collectively, the results obtained indicate that SULT-mediated enzymatic sulfation of tocopherols and their metabolites is a significant pathway for regulation of the homeostasis and physiological functions of these important compounds.