Journal ArticleDOI
Rapid chromatographic technique for preparative separations with moderate resolution
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Abstract:
(11) Potassium ferricyanide has previously been used to convert w'c-1,2-dicarboxylate groups to double bonds. See, for example, L. F. Fieser and M. J. Haddadln, J. Am. Chem. Soc., 86, 2392 (1964). The oxidative dldecarboxylation of 1,2-dlcarboxyllc acids is, of course, a well-known process. See Inter alia (a) C. A. Grob, M. Ohta, and A. Weiss, Helv. Chim. Acta, 41, 1911 (1958); and (b) E. N. Cain, R. Vukov, and S. Masamune, J. Chem. Soc. D, 98 (1969).read more
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Synthesis of a glucoheptaose and a glucooctaose that elicit phytoalexin accumulation in soybean.
TL;DR: The glucoheptaose 1 and theglucooctaose 2 have been synthesized using unambiguous methods and are identical with an elicitor-active heptasaccharide obtained from partially hydrolyzed mycelium of Phytophthora megasperma f.
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Dynamic resolution of atropisomeric amides using proline-derived imidazolines and ephedrine-derived oxazolidines
TL;DR: In this paper, atropisomeric tertiary 2-formyl naphthamides and benzamides with chiral diamines and amino alcohols were shown to be under thermodynamic control.
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Functionalized poly (vinyl alcohol) polymer as chemodosimeter material for the colorimetric sensing of cyanide in pure water
Jalal Isaad,Fabien Salaün +1 more
TL;DR: In this article, a new poly (vinyl alcohol) (PVA) derivative containing pendant chemoselective functionality is prepared for the cyanide detection in pure water, and incorporation of the chemodosimeter 4 on PVA is performed by direct coupling of the hydroxyl group of the dye 4 and PVA hydroxyn groups via ethereal linkage using di-bromoalkane as a cross-linking agent.
Journal ArticleDOI
Efficient Synthesis of Functionalized [7]Helicenes.
TL;DR: Helicenebisquinones can be made easily and in quantity by reacting the silyl enol ethers of a 9,10-dialkoxy-, or better a 9-10-disiloxy-, 3,6-diacetylphenanthrene, with p-benzoquinone.
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Stereoselective Syntheses of Dihydroxerulin and Xerulinic Acid, Anti‐Hypocholesterolemic Dyes from the Fungus Xerula melanotricha
TL;DR: The title compounds 2 and 3, which are inhibitors of the biosynthesis of cholesterol, were synthesized in a convergent and perfectly stereoselective manner and provided totally synthetic xerulinic acid for the first time.