𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The structure of 6-benzylamino-6-deoxy-1,2:3,4-di-O-isopropylidene-l-glycero-α-d-galacto-heptopyranurononitrile: Conformation of the six- and five-membered rings

✍ Scribed by Erika Miler-Srenger

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
494 KB
Volume
195
Category
Article
ISSN
0008-6215

No coin nor oath required. For personal study only.

✦ Synopsis

The structure of the title compound has been determined by X-ray analysis. The conformations of the saturated six-membered and the 1,3-dioxolane rings in the cis, tram, cis system of di-0-isopropylidene derivatives of a-D-galactopyranose, P-D-fructopyranose, and di-O-tosyl-L-chiro-inositol have been analysed in the solid state. EXPERIMENTAL* Crystal data for 1. -M, 374.4. Monoclinic, space group F2,, a = 10.423(5), b = 10.553(5), c = 10.011(5) A, (Y = 90, p = 110.63(5), y = 90.0", V = 1030.5(l) A3, D, = 1.207 Mg.mp3, 2 = 2, F(OO0) = 400.0; Cu-K, radiation, A 1.54178 A, ~(CU-K,) 0.634 mm-'. Crystal dimensions, 0.2 x 0.2 x 0.3 mm. Data collection and processing. -Four-circle Philips PW 1100 diffractometer, graphite-monochromated Cu-K, radiation, 0-28 scan technique up to 20 = 130". The intensity fluctuations were random. 1776 reflexions had intensities higher than 20-(I). No correction was applied for absorption. *Lists of observed and calculated structure factors, anisotropic thermal parameters, and fractional coordinates of H atoms are deposited with, and can be obtained from, Else-,% Science Publishers B.V.,

📜 SIMILAR VOLUMES

X-ray and conformational investigation o
X-ray and conformational investigation of 6-deoxy-6-C-(1,5-di-O-acetyl-2,3-O-isopropylidene-β-d-allo-pentofuranos-5-yl)-1,2:3,4-di-O-isopropylidene- α-d-galactopyranose and 6-C-(benzyl 5-deoxy-2,3-O-isopropylidene-β-d-ribofuranosid-5-yl)-1,2:3,4-di-O-isopropylidene- d-glycero-α-d-galacto-hexopyranose
✍ Janusz W. Krajewski; Wojciech Karpiesiuk; Anna Banaszek 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 523 KB

The structures of the title compounds (2b and 3) have been investigated in the solid state by X-ray methods. The crystals of 2b are monoclinic, space group P2,, and of 3 orthorhombit, space grtup P2,2,2,. The cell dimensions are: for 2b, a = 9.910(2), b = 11;745W, c = 11.810(3) A, /3 = 97.32(l)"; a

Crystal and molecular structure of 6-C-(
Crystal and molecular structure of 6-C-(2-furyl)-1,2:3,4-di-O-isopropylidene-α-d-glycero-d-galacto-hexopyranose
✍ Janusz W. Krajewski; Przemysław Gluziński; Zofia Urbańczyk-Lipkowska; Aleksander 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 511 KB

6-C-(2-Furyl)-1,2:3,4-di-O-isopropylidene-~-D-g~yce~o-D-ga~~c~o-hexopyranose (1) has been investigated by X-ray diffraction methods. The crystals obtained from ethyl acetate-light petroleum were monoclinic, space group P2, (2 = 2)) with cell dimensions a = 13.796(2), b = 7.887(l), c = 8.035(l) A, an

X-ray and conformational investigation o
X-ray and conformational investigation of 6-deoxy-7-C-(2-furyl)-1,2:3,4-di-O-isopropylidene-l-glycero-a-d-galacto- heptopyranose
✍ Janusz W. Krajewski; Przemyslaw Gluziński; Zofia Urbańczyk-Lipkowska; Jan Ramza; 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 400 KB

The crystals of the title compound arc orthorhombic, space group P2,2,2, (Z = 4) with cell dimensions a = 9.791(l), b = 10.235(l), c = 17.703(2) A. The pyranoid ring has a hybrid twist + screw ("T2+"S5) conformation, and the configuration at C-7 is (R).

Synthesis, crystal structure, and confor
Synthesis, crystal structure, and conformation of 3-O-(6-O-acetyl-2,3-anhydro-4-deoxy-α-l-ribo-hexopyranosyl)-1,2:5,6-di-O-isopropylidene-α-d-glucofuranose
✍ Janusz W. Krajewski; Przemysław Gluziński; Zofia Urbańczyk-Lipkowska; Anna Banas 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 638 KB

3-0-(6-0-Acetyl-2,3-anhydro-4-deoxy-a-L-ribo-hexopyranosyl)-l,2:5,6-di-O-isopropylidene-a-D-glucofuranose has been synthesised and its monocrystal investigated by X-ray diffraction methods. The compound crystallises in the orthorhombic system, space group P2,2,2t, with cell constants a = 8.790( 7),