Concept

Pyrane

Publications associées (4)

Equilibrium and non-equilibrium furanose selection in the ribose isomerisation network

Paolo De Los Rios, Daniel Maria Busiello, Shiling Liang, Francesco Piazza

The exclusive presence of beta -D-ribofuranose in nucleic acids is still a conundrum in prebiotic chemistry, given that pyranose species are substantially more stable at equilibrium. However, a precise characterisation of the relative furanose/pyranose fra ...

NATURE RESEARCH2021

Polysulfones as new organic catalysts

Dean Markovic

Even unsubstituted butadiene adds to sulfur dioxide in the hetero-Diels-Alder mode more rapidly than in the chelotropic mode. The sultine can be observed in equilibrium with the diene and the sulfur dioxide only at low temperature and in the presence of CF ...

EPFL2005

Switchable reactivity: the site-selective functionalization of trifluoromethyl-substituted pyrazoles

Kurt Schenk

Modern organometallic methods enable the regioflexible conversion of simple heterocyclic starting materials into families of isomers and congeners. Depending on the choice of the reagent, 1-methyl-5-(trifluoromethyl)pyrazole undergoes deprotonation and sub ...

2002

Total synthesis of a protected form of 2,6-anhydro-5-azido-3,5-dideoxy-2-C-hydroxymethyl-L-allo-heptose; a potential precursor of analogs of C-glycosides of neuraminic acid

Pierre Vogel

The title aldehyde (-)-3 and its enantiomer (+)-3 have been prepared starting from furfuryl alcohol and acetone. The method involves the diastereoselective [4+3]-cycloaddition of 2-[(benzyloxy)methyl]furan and 1, 3-dibromo-2-oxyallyl cation giving adduct ( ...

2000

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