2-Oxoamides based on dipeptides as selective calcium-independent phospholipase A 2 inhibitors
作者:Anneta Smyrniotou、Maroula G. Kokotou、Varnavas D. Mouchlis、Efrosini Barbayianni、George Kokotos、Edward A. Dennis、Violetta Constantinou-Kokotou
DOI:10.1016/j.bmc.2016.12.007
日期:2017.2
of synthetic compounds (bromoenol lactone and polyfluoroketones). To expand the chemical diversity, a variety of 2-oxoamides based on dipeptides and ether dipeptides were synthesized and studied for their in vitro inhibitory activity on human GVIA iPLA2 and their selectivity over the other major intracellular GIVA cPLA2 and the secreted GV sPLA2. Structure-activity relationship studies revealed the
Synthesis of α-Hydroxy Carboxylic Acids via a Nickel(II)- Catalyzed Hydrogen Transfer Process
作者:Guo Tang、Chien-Hong Cheng
DOI:10.1002/adsc.201100241
日期:2011.8
catalytic system for β-alkylation of lactic acid with primary alcohols has been developed. In the presence of nickel(II) acetate tetrahydrate [Ni(OAc)2(H2O)4] and base, lactic acid reacts with primary alcohols to afford the corresponding coupled α-hydroxycarboxylicacids in good to excellent yields via a hydrogentransferprocess without any hydrogen acceptor or hydrogen donor.
Compositions, kits and regimens for the treatment of skin, especially décolletage
申请人:Jr Chem, LLC
公开号:EP2087880A2
公开(公告)日:2009-08-12
Compositions, kits and regimens for treatment of damaged skin, especially décolletage, include application of a retinoid, hydroquinone or hydroquinone derivatives, and a composition containing a multi-metal complex.
Differential Inhibition of Group IVA and Group VIA Phospholipases A<sub>2</sub> by 2-Oxoamides
作者:Daren Stephens、Efrosini Barbayianni、Violetta Constantinou-Kokotou、Anna Peristeraki、David A. Six、Jennifer Cooper、Richard Harkewicz、Raymond A. Deems、Edward A. Dennis、George Kokotos
DOI:10.1021/jm050993h
日期:2006.5.1
Inhibitors of the Group IVA phospholipase A(2) (GIVA cPLA(2)) and GVIA iPLA(2) are useful tools for defining the roles of these enzymes in cellular signaling and inflammation. We have developed inhibitors of GVIA iPLA(2) building upon the 2-oxoamide backbone that are uncharged, containing ester groups. Although the most potent inhibitors of GVIA iPLA(2) also inhibited GIVA cPLA(2), there were three 2-oxoamide compounds that selectively and weakly inhibited GVIA iPLA(2). We further show that several potent 2-oxoamide inhibitors of GIVA cPLA(2) containing free carboxylic groups (Kokotos et al. J. Med. Chem. 2002, 45, 2891-2893) do not inhibit GVIA iPLA(2) and are, therefore, selective GIVA cPLA(2) inhibitors.
Chlorohydrin and hydroxycarboxylic ester asymmetric hydrolase gene