González Soengas, Raquel MaríaValencia Matarranz, LauraEstévez Cabanas, Juan CarlosEstévez Cabanas, Ramón José2020-07-152020-07-152008Soengas, Raquel G. ; Valencia, Laura ; Estévez, Juan C. ; Estévez, Ramón J. (2008). Ethyl 1-O-tert-butyldimethylsilyl-2,3-O-isopropylidene-5-[(2′S)-tetrahydropyran-2-yloxy]-D-glycero-α-D-manno-heptofuronate. " Acta Crystallographica Section E", E64, o14782056-9890http://hdl.handle.net/10347/23132The title compound {systematic name: (2S,3R)-ethyl 3- [(3aS,4R,6S,6aS)-6-tert-butyldimethylsilyloxy-2,2-dimethylperhydrofuro[3,4-d][1,3]dioxol-4-yl]-2-nitro-3-[(S)-tetrahydro-2H-pyran-2-yloxy]propanoate}, C23H41NO10Si, is the product of the Henry reaction of 1-O-tert-butyldimethylsilyl2,3-O-isopropylidene--d-lyxo-pentadialdo-1,4-furanose with ethyl nitroacetate and the subsequent protection of its C-5 hydroxy group as tetrahydropyranyl, in order to avoid the retro-Henry reaction. The tetrahydropyranyl group adopts a chair conformation. The absolute configuration, assumed from the synthesis, was confirmed from the diffraction dataeng© 2008 by the authors. Licensee International Union of Crystallography. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) licensehttp://creativecommons.org/licenses/by/4.0/Single-crystal X-ray studyR factor = 0.067wR factor = 0.264Data-to-parameter ratio = 18.1.Mean (C–C) = 0.012 A˚T = 293 Kjournal article10.1107/S16005368080211931600-5368open access