organic compounds
{(3aR,5S,6R,6aR)-5-[(R)-1,2-Dihydroxyethyl]-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl}methyl methanesulfonate
aFaculty of Material Science and Applied Chemistry, Riga Technical University, 3 P. Valdena Street, Riga, LV-1007, Latvia, and bLatvian Institute of Organic Synthesis, 21 Aizkraukles Street, Riga, LV-1006, Latvia
*Correspondence e-mail: v.rjabovs@gmail.com
In the title compound, C11H20O8S, the furanose ring has a pseudorotation phase angle equal to 31.3° and assumes a 3T4 conformation, with deviations of 0.297 (4) and −0.152 (4) Å for the corresponding C atoms. The dioxolane ring adopts an One of the O atoms is at the flap and deviates from the least-squares plane formed by the other four ring atoms by 0.405 (2) Å. The dihedral angle between the planar fragments of the rings is 63.53 (8)°. In the crystal, molecules are associated into sheets perpendiculer to the b axis by means of O—H⋯O hydrogen bonds. A few weak C—H⋯O interactions are also observed.
CCDC reference: 995085
Related literature
For the synthesis, properties and applications of the title compound, see: Mikhailopulo et al. (1996); Rjabova et al. (2012). Its applications in the synthesis of imino sugars and 1′-aza-C-nucleosides are described by Filichev & Pedersen (2001). For a review on the syntheses and biological properties of imino sugars, see: López et al. (2012). For reviews on the synthesies and biological properties of aza-nucleosides, see: Romeo et al. (2010); Merino (2006).
Experimental
Crystal data
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Data collection: COLLECT (Bruker, 2004); cell SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supporting information
CCDC reference: 995085
10.1107/S1600536814007387/zp2012sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814007387/zp2012Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814007387/zp2012Isup3.cml
Single crystals of ((3aR,5S,6R,6aR)-5-((R)-1,2-dihydroxyethyl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl)methyl methanesulfonate were grown from a dichloromethane solution by a slow evaporation at ambient temperature. 1H-NMR and 13C-NMR spectra were recorded at 300 MHz and at 75.5 MHz, respectively. The proton signals for residual non-deuterated solvents (δ 7.26 for CHCl3) and carbon signals (δ 77.1 for CDCl3) were used as the internal references for 1H-NMR and 13C-NMR spectra, respectively. Coupling constants are reported in Hz. Analytical thin layer (TLC) was performed on Kieselgel 60 F254 glass plates precoated with a 0.25 mm thickness of silica gel. 2M aqueous solution of H2SO4 (1 ml, 2.0 mmol, 0.5 equiv.) was added to a solution of 1,2,5,6-di-O-isopropylidene-3-deoxy-3-mesyloxymethyl-α-D-allofuranose (1.46 g, 4.1 mmol, 1.0 equiv.) in a mixture of MeOH (11 ml) and DCM (4 ml). The resulting reaction mixture was stirred at 50 °C for 1.5 h (TLC control). The reaction mixture was quenched with saturated aqueous solution of NaHCO3 (10 ml) and organic solvents were evaporated under reduced pressure. Ethyl acetate (50 ml) was added, the layers were separated, and the organic layer was washed with brine (3 × 10 ml), dried over Na2SO4, filtered and evaporated. Crystallization of the crude product from DCM yielded analytically pure mesylate (1.24 g, 96%) as a white solid. M.p. 103–104°C (DCM), Rf=0.16 (hexanes/EtOAc 1:3), 1H-NMR (CDCl3, 300 MHz): 1.34 (s, 3H), 1.52 (s, 3H), 2.36 (b.s., 2H), 2.49 (tt, J=9.8 Hz, J=4.8 Hz, 1H), 3.05 (s, 3H), 3.69 (m, 2H), 3.83 (m, 2H), 4.42 (t, J=10.0 Hz, 1H), 4.67 (dd, J=10.0 Hz, J=5.0 Hz, 1H), 4.77 (t, J=4.0 Hz, 1H), 5.83 (d, J=3.6 Hz, 1H), 13C-NMR (CDCl3, 75 MHz): 26.4, 26.7, 37.1, 47.5, 63.7, 66.6, 73.3, 78.8, 80.4, 105.0, 112.4, HRMS: Calculated for C11H20O8NaS [M+Na]+: 335.0777. Found [M+Na]+: 335.0736.
Crystal data, data collection and structure
details are summarized in Table 1. All 20 non-hydrogen atoms were refined anisotropically. All hydrogen atoms were positioned geometrically (O—H = 0.82 Å, C—H = 0.93 to 0.98 Å) and refined as riding on their parent atoms with Uiso (H) = 1.5Ueq (C,O) for methyl and oxy groups and Uiso (H) = 1.2Ueq (C) for others.Data collection: COLLECT (Bruker, 2004); cell
SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).Fig. 1. The asymmetric unit of the title compound showing 50% probability displacement ellipsoids and the atom-numbering (hydrogen atoms are shown as small spheres of arbitrary radii) | |
Fig. 2. Packing diagram of the title compound viewed down the a axis. |
C11H20O8S | F(000) = 332 |
Mr = 312.33 | Dx = 1.495 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 7583 reflections |
a = 5.5794 (1) Å | θ = 1.0–27.5° |
b = 15.6118 (3) Å | µ = 0.27 mm−1 |
c = 8.0653 (2) Å | T = 293 K |
β = 98.913 (1)° | Prism, colourless |
V = 694.04 (3) Å3 | 0.35 × 0.30 × 0.28 mm |
Z = 2 |
Nonius KappaCCD diffractometer | 3005 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.018 |
Graphite monochromator | θmax = 27.5°, θmin = 2.6° |
CCD scans | h = −7→6 |
5266 measured reflections | k = −20→20 |
3185 independent reflections | l = −10→10 |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.027 | w = 1/[σ2(Fo2) + (0.0319P)2 + 0.0938P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.065 | (Δ/σ)max = 0.003 |
S = 1.03 | Δρmax = 0.16 e Å−3 |
3185 reflections | Δρmin = −0.21 e Å−3 |
187 parameters | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
1 restraint | Extinction coefficient: 0.064 (4) |
Primary atom site location: structure-invariant direct methods | Absolute structure: Flack (1983), 1528 Friedel pairs |
Secondary atom site location: difference Fourier map | Absolute structure parameter: 0.00 (5) |
C11H20O8S | V = 694.04 (3) Å3 |
Mr = 312.33 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 5.5794 (1) Å | µ = 0.27 mm−1 |
b = 15.6118 (3) Å | T = 293 K |
c = 8.0653 (2) Å | 0.35 × 0.30 × 0.28 mm |
β = 98.913 (1)° |
Nonius KappaCCD diffractometer | 3005 reflections with I > 2σ(I) |
5266 measured reflections | Rint = 0.018 |
3185 independent reflections |
R[F2 > 2σ(F2)] = 0.027 | H-atom parameters constrained |
wR(F2) = 0.065 | Δρmax = 0.16 e Å−3 |
S = 1.03 | Δρmin = −0.21 e Å−3 |
3185 reflections | Absolute structure: Flack (1983), 1528 Friedel pairs |
187 parameters | Absolute structure parameter: 0.00 (5) |
1 restraint |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
C9 | 0.0490 (4) | 0.33494 (13) | −0.8352 (2) | 0.0407 (4) | |
H9A | 0.1797 | 0.3741 | −0.8422 | 0.061* | |
H9B | −0.0757 | 0.3429 | −0.9302 | 0.061* | |
H9C | 0.1083 | 0.2772 | −0.8345 | 0.061* | |
C7 | −0.0536 (3) | 0.35157 (11) | −0.6762 (2) | 0.0316 (3) | |
C8 | −0.2632 (4) | 0.29425 (14) | −0.6553 (2) | 0.0470 (5) | |
H8A | −0.2092 | 0.2358 | −0.6465 | 0.071* | |
H8B | −0.3882 | 0.3003 | −0.7507 | 0.071* | |
H8C | −0.3262 | 0.3100 | −0.5554 | 0.071* | |
S1 | 0.60651 (6) | 0.22002 (2) | −0.20810 (5) | 0.02715 (10) | |
O4 | 0.22882 (19) | 0.51605 (8) | 0.01079 (13) | 0.0303 (2) | |
H41 | 0.3738 | 0.5199 | 0.0049 | 0.046* | |
O1 | −0.0420 (3) | 0.52359 (9) | −0.43022 (15) | 0.0465 (4) | |
O6 | 0.55516 (19) | 0.31615 (7) | −0.26299 (14) | 0.0278 (2) | |
O3 | 0.1263 (2) | 0.34259 (7) | −0.53311 (14) | 0.0347 (3) | |
O5 | −0.27358 (19) | 0.51658 (8) | −0.01728 (15) | 0.0364 (3) | |
H51 | −0.1929 | 0.5014 | 0.0716 | 0.055* | |
O2 | −0.1278 (2) | 0.44075 (9) | −0.67350 (16) | 0.0396 (3) | |
O8 | 0.8446 (2) | 0.20376 (8) | −0.24301 (17) | 0.0427 (3) | |
O7 | 0.5551 (2) | 0.20875 (9) | −0.04236 (15) | 0.0426 (3) | |
C10 | 0.3456 (3) | 0.35774 (10) | −0.2075 (2) | 0.0284 (3) | |
H10A | 0.3819 | 0.3718 | −0.0891 | 0.034* | |
H10B | 0.2063 | 0.3198 | −0.2244 | 0.034* | |
C3 | 0.2921 (3) | 0.43831 (10) | −0.31045 (18) | 0.0247 (3) | |
H3 | 0.4270 | 0.4787 | −0.2833 | 0.030* | |
C1 | 0.0500 (3) | 0.48807 (11) | −0.5677 (2) | 0.0329 (4) | |
H1 | 0.1185 | 0.5329 | −0.6313 | 0.039* | |
C6 | −0.1460 (3) | 0.58175 (10) | −0.0923 (2) | 0.0335 (4) | |
H6A | −0.1128 | 0.6293 | −0.0147 | 0.040* | |
H6B | −0.2477 | 0.6028 | −0.1925 | 0.040* | |
C4 | 0.0556 (3) | 0.48076 (10) | −0.2760 (2) | 0.0276 (3) | |
H4 | −0.0583 | 0.4370 | −0.2493 | 0.033* | |
C2 | 0.2447 (3) | 0.42291 (10) | −0.49929 (19) | 0.0277 (3) | |
H2 | 0.3917 | 0.4282 | −0.5511 | 0.033* | |
C5 | 0.0908 (3) | 0.54919 (10) | −0.13860 (19) | 0.0266 (3) | |
H5 | 0.1789 | 0.5976 | −0.1777 | 0.032* | |
C11 | 0.3976 (3) | 0.16137 (13) | −0.3475 (3) | 0.0445 (4) | |
H11A | 0.4188 | 0.1014 | −0.3237 | 0.067* | |
H11B | 0.4233 | 0.1724 | −0.4605 | 0.067* | |
H11C | 0.2358 | 0.1781 | −0.3348 | 0.067* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C9 | 0.0485 (10) | 0.0442 (10) | 0.0313 (9) | −0.0040 (8) | 0.0124 (8) | −0.0070 (8) |
C7 | 0.0347 (8) | 0.0323 (8) | 0.0268 (7) | 0.0030 (7) | 0.0017 (6) | −0.0024 (7) |
C8 | 0.0445 (11) | 0.0566 (13) | 0.0421 (11) | −0.0097 (9) | 0.0132 (8) | −0.0093 (9) |
S1 | 0.02425 (17) | 0.02403 (17) | 0.03312 (19) | 0.00244 (15) | 0.00429 (13) | 0.00247 (17) |
O4 | 0.0234 (5) | 0.0375 (6) | 0.0295 (6) | 0.0003 (5) | 0.0024 (4) | −0.0030 (5) |
O1 | 0.0576 (8) | 0.0472 (8) | 0.0306 (6) | 0.0302 (7) | −0.0062 (5) | −0.0066 (6) |
O6 | 0.0260 (5) | 0.0252 (5) | 0.0333 (6) | 0.0046 (4) | 0.0078 (4) | 0.0031 (5) |
O3 | 0.0438 (7) | 0.0268 (6) | 0.0298 (6) | 0.0021 (5) | −0.0061 (5) | −0.0033 (5) |
O5 | 0.0227 (5) | 0.0496 (7) | 0.0359 (6) | 0.0025 (5) | 0.0013 (4) | −0.0006 (6) |
O2 | 0.0408 (7) | 0.0384 (7) | 0.0356 (7) | 0.0089 (5) | −0.0061 (5) | −0.0052 (5) |
O8 | 0.0284 (6) | 0.0370 (7) | 0.0640 (8) | 0.0093 (5) | 0.0112 (5) | 0.0074 (6) |
O7 | 0.0536 (7) | 0.0392 (7) | 0.0362 (6) | 0.0050 (6) | 0.0101 (5) | 0.0113 (6) |
C10 | 0.0281 (7) | 0.0300 (8) | 0.0287 (8) | 0.0076 (6) | 0.0093 (6) | 0.0022 (6) |
C3 | 0.0228 (7) | 0.0248 (7) | 0.0262 (7) | 0.0009 (6) | 0.0032 (5) | −0.0018 (6) |
C1 | 0.0379 (9) | 0.0309 (8) | 0.0283 (8) | 0.0032 (7) | 0.0003 (7) | 0.0005 (7) |
C6 | 0.0300 (8) | 0.0307 (8) | 0.0387 (9) | 0.0062 (6) | 0.0019 (7) | −0.0090 (7) |
C4 | 0.0253 (7) | 0.0273 (7) | 0.0288 (8) | 0.0047 (6) | −0.0003 (6) | −0.0037 (6) |
C2 | 0.0293 (8) | 0.0271 (7) | 0.0270 (7) | 0.0010 (6) | 0.0050 (6) | 0.0016 (6) |
C5 | 0.0250 (7) | 0.0242 (7) | 0.0302 (8) | 0.0000 (6) | 0.0029 (6) | −0.0032 (6) |
C11 | 0.0392 (10) | 0.0399 (10) | 0.0536 (11) | −0.0059 (8) | 0.0051 (8) | −0.0139 (9) |
C9—C7 | 1.506 (2) | O5—H51 | 0.8200 |
C9—H9A | 0.9600 | O2—C1 | 1.413 (2) |
C9—H9B | 0.9600 | C10—C3 | 1.511 (2) |
C9—H9C | 0.9600 | C10—H10A | 0.9700 |
C7—O3 | 1.4140 (19) | C10—H10B | 0.9700 |
C7—O2 | 1.454 (2) | C3—C2 | 1.524 (2) |
C7—C8 | 1.503 (3) | C3—C4 | 1.540 (2) |
C8—H8A | 0.9600 | C3—H3 | 0.9800 |
C8—H8B | 0.9600 | C1—C2 | 1.528 (2) |
C8—H8C | 0.9600 | C1—H1 | 0.9800 |
S1—O7 | 1.4210 (12) | C6—C5 | 1.515 (2) |
S1—O8 | 1.4226 (12) | C6—H6A | 0.9700 |
S1—O6 | 1.5782 (11) | C6—H6B | 0.9700 |
S1—C11 | 1.7480 (18) | C4—C5 | 1.530 (2) |
O4—C5 | 1.4230 (18) | C4—H4 | 0.9800 |
O4—H41 | 0.8200 | C2—H2 | 0.9800 |
O1—C1 | 1.406 (2) | C5—H5 | 0.9800 |
O1—C4 | 1.442 (2) | C11—H11A | 0.9600 |
O6—C10 | 1.4669 (17) | C11—H11B | 0.9600 |
O3—C2 | 1.4238 (19) | C11—H11C | 0.9600 |
O5—C6 | 1.429 (2) | ||
C7—C9—H9A | 109.5 | C10—C3—H3 | 109.5 |
C7—C9—H9B | 109.5 | C2—C3—H3 | 109.5 |
H9A—C9—H9B | 109.5 | C4—C3—H3 | 109.5 |
C7—C9—H9C | 109.5 | O1—C1—O2 | 112.02 (14) |
H9A—C9—H9C | 109.5 | O1—C1—C2 | 107.70 (13) |
H9B—C9—H9C | 109.5 | O2—C1—C2 | 105.27 (13) |
O3—C7—O2 | 104.53 (12) | O1—C1—H1 | 110.6 |
O3—C7—C8 | 108.42 (14) | O2—C1—H1 | 110.6 |
O2—C7—C8 | 109.89 (15) | C2—C1—H1 | 110.6 |
O3—C7—C9 | 111.26 (14) | O5—C6—C5 | 112.10 (13) |
O2—C7—C9 | 108.93 (14) | O5—C6—H6A | 109.2 |
C8—C7—C9 | 113.43 (15) | C5—C6—H6A | 109.2 |
C7—C8—H8A | 109.5 | O5—C6—H6B | 109.2 |
C7—C8—H8B | 109.5 | C5—C6—H6B | 109.2 |
H8A—C8—H8B | 109.5 | H6A—C6—H6B | 107.9 |
C7—C8—H8C | 109.5 | O1—C4—C5 | 106.85 (12) |
H8A—C8—H8C | 109.5 | O1—C4—C3 | 105.29 (12) |
H8B—C8—H8C | 109.5 | C5—C4—C3 | 114.43 (12) |
O7—S1—O8 | 119.66 (8) | O1—C4—H4 | 110.0 |
O7—S1—O6 | 109.11 (7) | C5—C4—H4 | 110.0 |
O8—S1—O6 | 104.40 (7) | C3—C4—H4 | 110.0 |
O7—S1—C11 | 109.17 (10) | O3—C2—C3 | 109.51 (12) |
O8—S1—C11 | 109.23 (9) | O3—C2—C1 | 103.57 (12) |
O6—S1—C11 | 104.11 (8) | C3—C2—C1 | 105.03 (12) |
C5—O4—H41 | 109.5 | O3—C2—H2 | 112.7 |
C1—O1—C4 | 111.21 (12) | C3—C2—H2 | 112.7 |
C10—O6—S1 | 117.00 (10) | C1—C2—H2 | 112.7 |
C7—O3—C2 | 108.57 (12) | O4—C5—C6 | 106.96 (12) |
C6—O5—H51 | 109.5 | O4—C5—C4 | 110.57 (12) |
C1—O2—C7 | 109.55 (12) | C6—C5—C4 | 113.18 (12) |
O6—C10—C3 | 107.43 (11) | O4—C5—H5 | 108.7 |
O6—C10—H10A | 110.2 | C6—C5—H5 | 108.7 |
C3—C10—H10A | 110.2 | C4—C5—H5 | 108.7 |
O6—C10—H10B | 110.2 | S1—C11—H11A | 109.5 |
C3—C10—H10B | 110.2 | S1—C11—H11B | 109.5 |
H10A—C10—H10B | 108.5 | H11A—C11—H11B | 109.5 |
C10—C3—C2 | 114.00 (13) | S1—C11—H11C | 109.5 |
C10—C3—C4 | 111.15 (12) | H11A—C11—H11C | 109.5 |
C2—C3—C4 | 103.12 (12) | H11B—C11—H11C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H41···O5i | 0.82 | 2.00 | 2.820 (2) | 174 |
O5—H51···O2ii | 0.82 | 2.24 | 3.009 (2) | 156 |
O5—H51···O4 | 0.82 | 2.49 | 2.777 (2) | 102 |
C3—H3···O5i | 0.98 | 2.58 | 3.344 (2) | 135 |
C8—H8C···O6iii | 0.96 | 2.55 | 3.486 (2) | 165 |
C9—H9A···O4iv | 0.96 | 2.55 | 3.306 (2) | 136 |
C10—H10A···O4 | 0.97 | 2.58 | 3.160 (2) | 118 |
C11—H11C···O8iii | 0.96 | 2.44 | 3.387 (2) | 167 |
Symmetry codes: (i) x+1, y, z; (ii) x, y, z+1; (iii) x−1, y, z; (iv) x, y, z−1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H41···O5i | 0.82 | 2.00 | 2.820 (2) | 174 |
O5—H51···O2ii | 0.82 | 2.24 | 3.009 (2) | 156 |
C3—H3···O5i | 0.98 | 2.58 | 3.344 (2) | 135 |
C8—H8C···O6iii | 0.96 | 2.55 | 3.486 (2) | 165 |
C9—H9A···O4iv | 0.96 | 2.55 | 3.306 (2) | 136 |
C11—H11C···O8iii | 0.96 | 2.44 | 3.387 (2) | 167 |
Symmetry codes: (i) x+1, y, z; (ii) x, y, z+1; (iii) x−1, y, z; (iv) x, y, z−1. |
Acknowledgements
This work was supported by the Latvian Council of Science (grant No 09.1557).
References
Bruker (2004). COLLECT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Filichev, V. V. & Pedersen, E. B. (2001). Tetrahedron, 57, 9163–9168. Web of Science CrossRef CAS Google Scholar
Flack, H. D. (1983). Acta Cryst. A39, 876–881. CrossRef CAS Web of Science IUCr Journals Google Scholar
López, O., Merino-Montiel, P., Martos, S. & González-Benjumea, A. (2012). Carbohydr. Chem. 38, 215–262. Google Scholar
Merino, P. (2006). Curr. Med. Chem. 13, 539–545. Web of Science CrossRef PubMed CAS Google Scholar
Mikhailopulo, I. A., Poopeiko, N. O., Tsvetkova, T. M., Marochkin, A. P., Balzarini, J. & De Clercq, E. (1996). Carbohydr. Res. 285, 17-28. CrossRef CAS PubMed Web of Science Google Scholar
Otwinowski, Z. & Minor, W. (1997). Methods in Enzymology, Vol. 276, Macromolecular Crystallography, Part A, edited by C. W. Carter Jr & R. M. Sweet, pp. 307–326. New York: Academic Press. Google Scholar
Rjabova, J., Rjabovs, V., Moreno Vargas, A. J., Clavijo, E. M. & Turks, M. (2012). Centr. Eur. J. Chem. 10, 386–394. Web of Science CrossRef CAS Google Scholar
Romeo, G., Chiacchio, U., Corsaro, A. & Merino, P. (2010). Chem. Rev. 110, 3337–3370. Web of Science CrossRef CAS PubMed Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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1,2-O-isopropylidene-3-deoxy-3-mesyloxymethyl-α-D-allofuranose was obtained as the intermediate in the syntheses of 3-C-branched 3-C-deoxy nucleoside analogs (Mikhailopulo et al., 1996) by an acidic hydrolysis of 5,6-isopropylidene protecting group of the corresponding mesylate. Both the title compound and its precursor can be used for the syntheses of different carbohydrate derivatives such as triazole conjugates of 3-C-branched 3-C-deoxy allofuranose (Rjabova et al., 2012) and imino sugars and 1'-aza-C-nucleosides (Filichev & Pedersen, 2001). For review on syntheses and biological properties of imino sugars, see: López et al. (2012). For reviews on syntheses and biological properties of aza-nucleosides, see: Romeo et al. (2010) and Merino (2006). Fig. 1 shows a view of the molecular structure of the title compound. The furanose ring has a pseudorotation phase angle equal to 31.3° and assumes 3T4 conformation with deviations of 0.297 (4) Å and -0.152 (4) Å for corresponding C atoms. The dioxolane ring adopts envelope conformation. One of the O atoms deviates from the least squares plane formed by four other atoms of the dioxolane ring by 0.405 (2) Å. The dihedral angle betweeen plane fragments of the cycles is 63.53 (8)°. In the crystal by means of O—H···O type hydrogen bonds the molecules are associated in sheets perpendiculer to crystallographic axis b (Fig. 2). A few week C—H···O hydrogen bond interactions have been also detected in the structure (Table 1).