Disubstituted endo tricyclic lactones have been prepared by the reaction of primary alkylmagnesium compounds with the endo bicyclo[2.2.1]hept-5-ene-2, 3 dicarboxylic anhydride. These lactones were alkylated and transformed into corresponding 3,5,5-trialkyl-2(5H) furanones.
Reductive Carbonylation of Acetylenes under Water-Gas Shift Reaction Conditions. Synthethis of Furan-2(5H)-ones from Terminal and Non-substituted Acetylenes
Under water-gas reaction conditions terminal and non-substituted acetylenes are selectively converted into furan-2(5H)-ones by catalysis with a rhodium carbonyl cluster.
在水-气反应条件下,末端和未取代的乙炔通过羰基铑簇的催化选择性转化为呋喃-2(5H)-酮。
A new route towards fimbrolide analogues: importance of the exomethylene motif in LuxR dependent quorum sensing inhibition
Sixteen analogues of fimbrolides (brominated 3-substituted-5-methylene-2(5H)-furanones), naturally occurring bacterial quorum sensing (QS) inhibitors, were synthesized by a novel sequence. The importance of the methylene group, either brominated or non-brominated, in LuxR-dependent QS inhibition was demonstrated. One of the most active furanone-type QS inhibitors was identified, with an IC50 of 0.6 μM.