561015-10-9Relevant academic research and scientific papers
Lactone compounds which can be used as antioxidant agents in pharmaceutical, cosmetic or food compositions and their method of preparation
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Page/Page column 10-12, (2011/05/05)
The subject of the present invention is specific lactone compounds which can be used as antioxidant agents in pharmaceutical or cosmetic compositions or in food products, the said compounds containing a naphthalene ring onto which two lactone units are gr
Synthesis of pulvinic acid and norbadione A analogues by Suzuki-Miyaura cross-coupling of benzylated intermediates
Murr, Marine Desage-El,Nowaczyk, Stephanie,Le Gall, Thierry,Mioskowski, Charles
, p. 1489 - 1498 (2007/10/03)
Pulvinic acid and norbadione A analogues can be prepared by Suzuki-Miyaura cross-coupling of functionalized aryl-boronic esters with appropriate vinyl inflates, in which the hydroxy functions are protected either with methyl or benzyl groups, the latter being cleaved in a more reliable fashion at the end of the synthetic sequence. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
Defunctionalization of γ-alkylidene-α-hydroxybutenolides by palladium(0)-catalyzed reaction of enol triflates with hexylboronic acid
Ahmed, Zafar,Langer, Peter
, p. 1057 - 1060 (2007/10/03)
The Suzuki reaction of hexylboronic acid with enol triflates derived from γ-alkylidene-α-hydroxybutenolides resulted in reductive formation of α-unsubstituted γ-alkylidenebutenolides. The formation of the products can be explained based on an "oxidative a
Synthesis of natural pulvinic acids based on a '[3+2] cyclization-Suzuki cross-coupling' strategy
Ahmed, Zafar,Langer, Peter
, p. 2055 - 2063 (2007/10/03)
A number of pulvinic acid natural products were prepared based on Suzuki cross coupling reactions of α-hydroxy-γ-alkylidenebutenolides which are readily available by cyclization of 1,3-bis-silyl enol ethers with oxalyl chloride. The formal total synthesis
Norbadione A: Synthetic approach to the bis(pulvinic acid) moiety and cesium-complexation studies
Desage-El Murr, Marine,Nowaczyk, Stephanie,Le Gall, Thierry,Mioskowski, Charles,Amekraz, Badia,Moulin, Christophe
, p. 1289 - 1293 (2007/10/03)
A permethylated analogue 1 of the mushroom pigment norbadione A was synthesized through a double Suzuki-Miyaura coupling of 1,7-diboronated naphthalene 2 and triflate 3. ESI-MS studies showed similar constants for the formation of the complexes of the nor
