Discovery of amide based fibrates as possible antidyslipidemic and antioxidant agents
摘要:
A novel series of amide based fibrates were synthesized and evaluated for antidyslipidemic activity in triton induced hyperlipidemic rats. Interestingly, the compound 13 produced striking reduction in serum levels of total cholesterol (TC), phospholipids (PL) and triglycerides (TG). In addition, it exhibited improved lipoprotein lipase activity and found to possess moderate radical scavenging potential. The results of the above studies shows that the compounds synthesized on fibrate based pharmacophores might result in identification of new lead for dyslipidemia. (C) 2012 Elsevier Masson SAS. All rights reserved.
for the synthesis of various sulfur-tethered vinylogous carbonates in good to excellent yields. Important features of the developed reaction include wide functional group tolerance, excellent chemo- and regioselectivity, and efficient rearrangement involving the carbonyl motif. The present reaction also equally works well with α-selenoesters for the synthesis of seleno-containing vinylogous carbonates
various functionalized enamides. The developed reaction involves the unprecedented [2,3]-sigmatropic rearrangement of sulfur ylides with the imine motif. Importantly, the method works well with various substituted α-thioesters/-amides/-ketones and substituted N-sulfonyl-1,2,3-triazoles and allows the synthesis of diverse enamide derivatives in good to excellent yields. The reaction was also successfully
Cu(I)/Chiral Bisoxazoline-Catalyzed Enantioselective Sommelet–Hauser Rearrangement of Sulfonium Ylides
作者:Shu-Sen Li、Jianbo Wang
DOI:10.1021/acs.joc.0c01590
日期:2020.10.2
asymmetric thia-Sommelet–Hauser rearrangement of sulfonium ylides remains a great challenge due to its multistep reaction mechanism involving metal carbene formation, proton transfer, and [2,3]-sigmatropic rearrangement. In particular, the key problem of such reactions is the differentiation of the enantiotopic lone pair electrons of sulfur, which generates the sulfonium ylide intermediate bearing chirality
Catalytic enantioselective [2,3] Stevens and Sommelet-Hauser rearrangements of α-diazo pyrazoleamides with sulfides were achieved by utilizing chiral N,N'-dioxide/nickel(II ) complex catalysts. These rearrangements proceeded well under mild reaction conditions, providing rapid and facile access to a series of functionalized 1,6-dicarbonyls or sulfane-substituted phenylacetates with high to excellent
Copper-Catalyzed Synthesis of α-Thioaryl Carbonyl Compounds Through SS and CC Bond Cleavage
作者:Liang-Hua Zou、Daniel L. Priebbenow、Long Wang、Jakob Mottweiler、Carsten Bolm
DOI:10.1002/adsc.201300566
日期:2013.9.16
α‐thioaryl esters employing copper acetate (hydrate) as catalyst and readily accessible diaryl disulfides and β‐diketones (or β‐keto esters) has been developed. Both alkyl‐ and aryl‐substituted carbonylcompounds can be prepared.