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Synthesis of methyl 3,6-dideoxy-3-C-methoxycarbonyl-3-C-nitrohexopyranosides: crystal structure of methyl 3,6-dideoxy-3-C-methoxycarbonyl-3-C-nitro-α- l-galacto-hexopyranoside

✍ Scribed by Francisca Cabrera Escribano; Rosario Fernández-Fernández; Antonio Gómez-Sánchez; Isidro Hermosín Gutiérrez; Amparo López-Castro; María Dolores Estrada

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
537 KB
Volume
199
Category
Article
ISSN
0008-6215

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✦ Synopsis

Methyl 3,6-dideoxy-3-C-methoxycarbonyl-3-C-nitro-a-L-ga~ac~o-hexopyranoside (3) has been synthesised by periodate oxidation of methyl a-L-rhamnopyranoside followed by condensation with methyl nitroacetate, and its structure has been established on the basis of its analytical and spectral data, and by an X-ray diffraction study. Crystals of 3 are orthorhombic, space group P2,2,2,, with a = 10.009(3), b = 15.3610(3), c = 7.986(3) A, and Z = 4. Molecular-packing analysis in the atom-atom approach yields an equilibrium configuration in good agreement with the experimental findings,

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