organic compounds
1-(2,3,4,6-Tetra-O-acetyl-β-D-glucopyranosyl)-3-thioureidothiourea monohydrate
aDepartment of Chemistry, Chifeng College, Chifeng 024001, People's Republic of China, bCollege of Chemistry, Nanjing University, Hankou Road, Nanjing,210093, People's Republic of China, cJiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, 210029, People's Republic of China, and dState Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, Hankou Road, Nanjing,210093, People's Republic of China
*Correspondence e-mail: wangxm07@nju.edu.cn
In the title compound, C16H24N4O9S2·H2O, the hexopyranosyl ring adopts a chair conformation (4C1), and the five substituents are in equatorial positions. In the extensive O—H⋯O, N—H⋯S and N—H⋯O hydrogen bonding leads to the formation of a three-dimensional network.
Related literature
For cycloaddition and nucleophilic addition, see: Pearson et al. (2003); Reitz et al. (1989). For the of glycosyl isothiosyanate, see: Jiang et al. (2003). For the crystal structures of glycosyl isothiosyanate methanol and ethanol derivatives, see: Zhang et al. (2001).
Experimental
Crystal data
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Data collection
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Data collection: SMART (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536808043833/su2088sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808043833/su2088Isup2.hkl
Compound (I) was prepared by refluxing together equimolar amounts of β-D-2,3,4,6-tetra-O- acetyl-glucopyranosyl isothiocyanate and thiosemicarbazide. After cooling to room temperature, water was added to the mixture and compound (I) was isolated as a white solid. Crystals, suitable for X-ray analysis, were grown from an ethyl acetate and acetonitrile (1:1 / v:v) solution by slow evaporation at room temperature.
The compound has a known chiral center [the
is -0.16 (12) (Flack, 1983)], and for this reason the Friedel pairs were not merged. The water H-atoms were located in the difference Fourier maps and refined with distance restraintes, O-H = 0.87 (2) Å. The N- and C-bound H-atoms were placed in calculated positions and treated as riding atoms: N—H = 0.86 Å, C—H = 0.96 - 0.98 Å, with Uiso(H) = 1.2 or 1.5Ueq(parent N- or C-atom).Data collection: SMART (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. A view of the molecular structure of compound (I), showing the atom-labelling scheme and displacement ellipsoids drawn at the 50% probability level. |
C16H24N4O9S2·H2O | F(000) = 1048 |
Mr = 498.53 | Dx = 1.384 Mg m−3 |
Monoclinic, C2 | Melting point: not measured K |
Hall symbol: C 2y | Mo Kα radiation, λ = 0.71073 Å |
a = 22.286 (2) Å | Cell parameters from 7141 reflections |
b = 7.2005 (7) Å | θ = 1.4–27.7° |
c = 15.8772 (17) Å | µ = 0.28 mm−1 |
β = 110.119 (2)° | T = 293 K |
V = 2392.3 (4) Å3 | Block, colorless |
Z = 4 | 0.45 × 0.22 × 0.22 mm |
Bruker SMART CCD area-detector diffractometer | 3021 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.036 |
Graphite monochromator | θmax = 25.0°, θmin = 1.4° |
ϕ scans, and ω scans | h = −25→26 |
6322 measured reflections | k = −8→8 |
3525 independent reflections | l = −18→11 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.055 | H-atom parameters constrained |
wR(F2) = 0.141 | w = 1/[σ2(Fo2) + (0.0808P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.07 | (Δ/σ)max < 0.001 |
3525 reflections | Δρmax = 0.42 e Å−3 |
289 parameters | Δρmin = −0.27 e Å−3 |
7 restraints | Absolute structure: Flack (1983), 1229 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.16 (12) |
C16H24N4O9S2·H2O | V = 2392.3 (4) Å3 |
Mr = 498.53 | Z = 4 |
Monoclinic, C2 | Mo Kα radiation |
a = 22.286 (2) Å | µ = 0.28 mm−1 |
b = 7.2005 (7) Å | T = 293 K |
c = 15.8772 (17) Å | 0.45 × 0.22 × 0.22 mm |
β = 110.119 (2)° |
Bruker SMART CCD area-detector diffractometer | 3021 reflections with I > 2σ(I) |
6322 measured reflections | Rint = 0.036 |
3525 independent reflections |
R[F2 > 2σ(F2)] = 0.055 | H-atom parameters constrained |
wR(F2) = 0.141 | Δρmax = 0.42 e Å−3 |
S = 1.07 | Δρmin = −0.27 e Å−3 |
3525 reflections | Absolute structure: Flack (1983), 1229 Friedel pairs |
289 parameters | Absolute structure parameter: −0.16 (12) |
7 restraints |
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 | ||
O1W | 0.0457 (4) | 0.2431 (10) | 0.3624 (6) | 0.193 (3) | |
H10 | 0.0696 | 0.2068 | 0.3324 | 0.232* | |
H20 | 0.0081 | 0.1989 | 0.3326 | 0.232* | |
S1 | 1.01347 (6) | 0.9344 (2) | 0.17559 (9) | 0.0605 (4) | |
S2 | 1.09337 (7) | 0.5527 (2) | 0.56716 (9) | 0.0720 (5) | |
O1 | 0.87014 (12) | 0.9697 (4) | 0.28332 (19) | 0.0433 (7) | |
O2 | 0.79211 (13) | 1.1140 (5) | 0.37749 (19) | 0.0493 (8) | |
O3 | 0.69458 (16) | 1.2284 (7) | 0.3502 (3) | 0.0796 (12) | |
O4 | 0.69663 (12) | 0.9277 (5) | 0.18084 (19) | 0.0467 (7) | |
O5 | 0.67103 (18) | 0.7887 (8) | 0.2901 (3) | 0.0880 (14) | |
O6 | 0.73828 (13) | 0.5785 (4) | 0.14481 (18) | 0.0455 (7) | |
O7 | 0.71021 (18) | 0.5906 (6) | −0.0050 (2) | 0.0732 (11) | |
O8 | 0.86480 (13) | 0.5944 (4) | 0.12682 (18) | 0.0464 (7) | |
O9 | 0.9131 (2) | 0.3601 (6) | 0.2159 (3) | 0.0902 (14) | |
N1 | 0.95480 (15) | 0.7892 (5) | 0.2819 (2) | 0.0427 (9) | |
H1A | 0.9581 | 0.7239 | 0.3287 | 0.051* | |
N2 | 1.06247 (16) | 0.7629 (6) | 0.3289 (2) | 0.0490 (10) | |
H2A | 1.0987 | 0.7961 | 0.3256 | 0.059* | |
N3 | 1.06233 (17) | 0.6483 (6) | 0.3986 (2) | 0.0496 (10) | |
H3A | 1.0510 | 0.5342 | 0.3874 | 0.060* | |
N4 | 1.0852 (2) | 0.8905 (7) | 0.4975 (3) | 0.0695 (13) | |
H4B | 1.0779 | 0.9645 | 0.4526 | 0.083* | |
H4C | 1.0960 | 0.9345 | 0.5510 | 0.083* | |
C1 | 0.89174 (18) | 0.8500 (6) | 0.2278 (3) | 0.0396 (10) | |
H1B | 0.8940 | 0.9195 | 0.1759 | 0.047* | |
C2 | 0.84790 (19) | 0.6840 (6) | 0.1959 (3) | 0.0387 (10) | |
H2B | 0.8538 | 0.5977 | 0.2459 | 0.046* | |
C3 | 0.77758 (18) | 0.7409 (6) | 0.1562 (3) | 0.0387 (10) | |
H3B | 0.7693 | 0.8028 | 0.0983 | 0.046* | |
C4 | 0.76213 (18) | 0.8694 (6) | 0.2203 (3) | 0.0396 (10) | |
H4A | 0.7681 | 0.8044 | 0.2768 | 0.047* | |
C5 | 0.8067 (2) | 1.0374 (6) | 0.2378 (3) | 0.0423 (10) | |
H5A | 0.8048 | 1.0902 | 0.1800 | 0.051* | |
C6 | 0.7926 (2) | 1.1884 (7) | 0.2936 (3) | 0.0487 (11) | |
H6A | 0.8249 | 1.2848 | 0.3050 | 0.058* | |
H6B | 0.7514 | 1.2436 | 0.2612 | 0.058* | |
C7 | 0.7401 (3) | 1.1452 (8) | 0.3977 (4) | 0.0586 (13) | |
C8 | 0.7464 (4) | 1.0653 (12) | 0.4877 (5) | 0.102 (2) | |
H8A | 0.7080 | 1.0891 | 0.5004 | 0.153* | |
H8B | 0.7820 | 1.1220 | 0.5331 | 0.153* | |
H8C | 0.7532 | 0.9337 | 0.4872 | 0.153* | |
C9 | 0.6553 (2) | 0.8752 (8) | 0.2213 (4) | 0.0534 (12) | |
C10 | 0.5887 (2) | 0.9374 (11) | 0.1689 (4) | 0.0745 (16) | |
H10A | 0.5601 | 0.8955 | 0.1984 | 0.112* | |
H10B | 0.5758 | 0.8859 | 0.1096 | 0.112* | |
H10C | 0.5874 | 1.0705 | 0.1653 | 0.112* | |
C11 | 0.7051 (2) | 0.5239 (7) | 0.0609 (3) | 0.0499 (12) | |
C12 | 0.6616 (3) | 0.3661 (9) | 0.0615 (4) | 0.0735 (17) | |
H12A | 0.6389 | 0.3273 | 0.0011 | 0.110* | |
H12B | 0.6316 | 0.4054 | 0.0892 | 0.110* | |
H12C | 0.6864 | 0.2642 | 0.0948 | 0.110* | |
C13 | 0.8985 (2) | 0.4365 (7) | 0.1448 (3) | 0.0495 (11) | |
C14 | 0.9150 (2) | 0.3741 (8) | 0.0673 (4) | 0.0643 (14) | |
H14A | 0.9387 | 0.2602 | 0.0819 | 0.096* | |
H14B | 0.9405 | 0.4672 | 0.0523 | 0.096* | |
H14C | 0.8765 | 0.3543 | 0.0170 | 0.096* | |
C15 | 1.00857 (19) | 0.8254 (6) | 0.2658 (3) | 0.0418 (10) | |
C16 | 1.0796 (2) | 0.7105 (7) | 0.4844 (3) | 0.0495 (12) |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1W | 0.265 (7) | 0.099 (4) | 0.166 (5) | 0.007 (5) | 0.012 (5) | −0.014 (4) |
S1 | 0.0520 (7) | 0.0731 (9) | 0.0629 (8) | 0.0127 (7) | 0.0280 (6) | 0.0215 (7) |
S2 | 0.0840 (10) | 0.0872 (11) | 0.0403 (7) | 0.0242 (8) | 0.0154 (6) | 0.0036 (7) |
O1 | 0.0333 (14) | 0.0484 (18) | 0.0460 (17) | −0.0008 (13) | 0.0109 (13) | −0.0055 (14) |
O2 | 0.0468 (17) | 0.053 (2) | 0.0451 (18) | 0.0115 (15) | 0.0115 (14) | −0.0022 (15) |
O3 | 0.050 (2) | 0.104 (3) | 0.088 (3) | 0.024 (2) | 0.029 (2) | 0.003 (3) |
O4 | 0.0344 (14) | 0.0564 (19) | 0.0471 (17) | 0.0005 (15) | 0.0112 (13) | −0.0011 (16) |
O5 | 0.062 (2) | 0.121 (4) | 0.089 (3) | −0.011 (2) | 0.036 (2) | 0.022 (3) |
O6 | 0.0445 (16) | 0.0522 (19) | 0.0344 (15) | −0.0082 (15) | 0.0066 (13) | −0.0036 (14) |
O7 | 0.092 (3) | 0.079 (3) | 0.0369 (19) | −0.017 (2) | 0.0069 (18) | −0.0039 (19) |
O8 | 0.0526 (17) | 0.0488 (18) | 0.0352 (15) | 0.0105 (16) | 0.0118 (13) | −0.0008 (14) |
O9 | 0.132 (4) | 0.073 (3) | 0.081 (3) | 0.047 (3) | 0.056 (3) | 0.023 (2) |
N1 | 0.0352 (18) | 0.051 (2) | 0.041 (2) | 0.0027 (17) | 0.0117 (15) | 0.0089 (17) |
N2 | 0.0342 (19) | 0.069 (3) | 0.044 (2) | 0.0034 (18) | 0.0148 (17) | 0.008 (2) |
N3 | 0.046 (2) | 0.052 (2) | 0.040 (2) | 0.0041 (18) | 0.0019 (17) | −0.0040 (18) |
N4 | 0.079 (3) | 0.073 (3) | 0.051 (3) | −0.007 (2) | 0.016 (2) | −0.015 (2) |
C1 | 0.038 (2) | 0.042 (2) | 0.039 (2) | 0.0045 (19) | 0.0128 (18) | 0.0030 (19) |
C2 | 0.041 (2) | 0.047 (2) | 0.028 (2) | 0.0074 (19) | 0.0111 (18) | 0.0022 (18) |
C3 | 0.036 (2) | 0.044 (2) | 0.033 (2) | −0.001 (2) | 0.0078 (17) | 0.0021 (19) |
C4 | 0.031 (2) | 0.051 (3) | 0.035 (2) | 0.0046 (19) | 0.0101 (17) | 0.0036 (19) |
C5 | 0.042 (2) | 0.042 (2) | 0.041 (2) | 0.001 (2) | 0.0108 (19) | 0.000 (2) |
C6 | 0.049 (3) | 0.041 (3) | 0.056 (3) | −0.004 (2) | 0.017 (2) | −0.002 (2) |
C7 | 0.059 (3) | 0.057 (3) | 0.065 (3) | 0.003 (3) | 0.028 (3) | −0.008 (3) |
C8 | 0.145 (6) | 0.096 (5) | 0.087 (5) | 0.033 (5) | 0.068 (4) | 0.017 (4) |
C9 | 0.044 (3) | 0.060 (3) | 0.059 (3) | −0.012 (2) | 0.021 (2) | −0.012 (3) |
C10 | 0.041 (3) | 0.103 (5) | 0.080 (4) | −0.006 (3) | 0.022 (3) | −0.016 (4) |
C11 | 0.046 (3) | 0.052 (3) | 0.045 (3) | 0.003 (2) | 0.007 (2) | −0.009 (2) |
C12 | 0.068 (3) | 0.075 (4) | 0.062 (3) | −0.022 (3) | 0.003 (3) | −0.018 (3) |
C13 | 0.054 (3) | 0.046 (3) | 0.047 (3) | 0.006 (2) | 0.016 (2) | 0.006 (3) |
C14 | 0.062 (3) | 0.067 (4) | 0.070 (3) | 0.014 (3) | 0.031 (3) | −0.008 (3) |
C15 | 0.037 (2) | 0.045 (3) | 0.043 (2) | 0.007 (2) | 0.0136 (19) | −0.005 (2) |
C16 | 0.034 (2) | 0.066 (3) | 0.045 (3) | 0.009 (2) | 0.010 (2) | −0.011 (2) |
O1W—H10 | 0.868 (10) | C1—C2 | 1.516 (6) |
O1W—H20 | 0.867 (8) | C1—H1B | 0.9800 |
S1—C15 | 1.669 (5) | C2—C3 | 1.530 (5) |
S2—C16 | 1.684 (5) | C2—H2B | 0.9800 |
O1—C1 | 1.430 (5) | C3—C4 | 1.501 (6) |
O1—C5 | 1.434 (5) | C3—H3B | 0.9800 |
O2—C7 | 1.324 (6) | C4—C5 | 1.528 (6) |
O2—C6 | 1.439 (6) | C4—H4A | 0.9800 |
O3—C7 | 1.196 (6) | C5—C6 | 1.503 (6) |
O4—C9 | 1.345 (6) | C5—H5A | 0.9800 |
O4—C4 | 1.439 (5) | C6—H6A | 0.9700 |
O5—C9 | 1.200 (6) | C6—H6B | 0.9700 |
O6—C11 | 1.342 (5) | C7—C8 | 1.501 (9) |
O6—C3 | 1.435 (5) | C8—H8A | 0.9600 |
O7—C11 | 1.192 (6) | C8—H8B | 0.9600 |
O8—C13 | 1.338 (6) | C8—H8C | 0.9600 |
O8—C2 | 1.430 (5) | C9—C10 | 1.500 (7) |
O9—C13 | 1.195 (6) | C10—H10A | 0.9600 |
N1—C15 | 1.335 (5) | C10—H10B | 0.9600 |
N1—C1 | 1.440 (5) | C10—H10C | 0.9600 |
N1—H1A | 0.8600 | C11—C12 | 1.496 (8) |
N2—C15 | 1.349 (5) | C12—H12A | 0.9600 |
N2—N3 | 1.382 (5) | C12—H12B | 0.9600 |
N2—H2A | 0.8600 | C12—H12C | 0.9600 |
N3—C16 | 1.358 (6) | C13—C14 | 1.471 (7) |
N3—H3A | 0.8600 | C14—H14A | 0.9600 |
N4—C16 | 1.312 (7) | C14—H14B | 0.9600 |
N4—H4B | 0.8600 | C14—H14C | 0.9600 |
N4—H4C | 0.8600 | ||
H10—O1W—H20 | 104.6 (8) | O2—C6—C5 | 110.3 (4) |
C1—O1—C5 | 112.1 (3) | O2—C6—H6A | 109.6 |
C7—O2—C6 | 116.6 (4) | C5—C6—H6A | 109.6 |
C9—O4—C4 | 117.9 (4) | O2—C6—H6B | 109.6 |
C11—O6—C3 | 117.9 (3) | C5—C6—H6B | 109.6 |
C13—O8—C2 | 119.8 (3) | H6A—C6—H6B | 108.1 |
C15—N1—C1 | 125.6 (4) | O3—C7—O2 | 123.8 (5) |
C15—N1—H1A | 117.2 | O3—C7—C8 | 124.9 (5) |
C1—N1—H1A | 117.2 | O2—C7—C8 | 111.3 (5) |
C15—N2—N3 | 123.2 (4) | C7—C8—H8A | 109.5 |
C15—N2—H2A | 118.4 | C7—C8—H8B | 109.5 |
N3—N2—H2A | 118.4 | H8A—C8—H8B | 109.5 |
C16—N3—N2 | 121.9 (4) | C7—C8—H8C | 109.5 |
C16—N3—H3A | 119.0 | H8A—C8—H8C | 109.5 |
N2—N3—H3A | 119.0 | H8B—C8—H8C | 109.5 |
C16—N4—H4B | 120.0 | O5—C9—O4 | 123.2 (5) |
C16—N4—H4C | 120.0 | O5—C9—C10 | 125.6 (5) |
H4B—N4—H4C | 120.0 | O4—C9—C10 | 111.2 (5) |
O1—C1—N1 | 106.4 (3) | C9—C10—H10A | 109.5 |
O1—C1—C2 | 111.5 (3) | C9—C10—H10B | 109.5 |
N1—C1—C2 | 110.1 (4) | H10A—C10—H10B | 109.5 |
O1—C1—H1B | 109.6 | C9—C10—H10C | 109.5 |
N1—C1—H1B | 109.6 | H10A—C10—H10C | 109.5 |
C2—C1—H1B | 109.6 | H10B—C10—H10C | 109.5 |
O8—C2—C1 | 107.6 (3) | O7—C11—O6 | 124.5 (4) |
O8—C2—C3 | 107.9 (3) | O7—C11—C12 | 124.8 (5) |
C1—C2—C3 | 112.2 (3) | O6—C11—C12 | 110.7 (4) |
O8—C2—H2B | 109.7 | C11—C12—H12A | 109.5 |
C1—C2—H2B | 109.7 | C11—C12—H12B | 109.5 |
C3—C2—H2B | 109.7 | H12A—C12—H12B | 109.5 |
O6—C3—C4 | 108.4 (3) | C11—C12—H12C | 109.5 |
O6—C3—C2 | 109.1 (3) | H12A—C12—H12C | 109.5 |
C4—C3—C2 | 109.1 (3) | H12B—C12—H12C | 109.5 |
O6—C3—H3B | 110.1 | O9—C13—O8 | 122.9 (4) |
C4—C3—H3B | 110.1 | O9—C13—C14 | 125.8 (5) |
C2—C3—H3B | 110.1 | O8—C13—C14 | 111.4 (4) |
O4—C4—C3 | 108.7 (3) | C13—C14—H14A | 109.5 |
O4—C4—C5 | 110.3 (3) | C13—C14—H14B | 109.5 |
C3—C4—C5 | 109.0 (3) | H14A—C14—H14B | 109.5 |
O4—C4—H4A | 109.7 | C13—C14—H14C | 109.5 |
C3—C4—H4A | 109.7 | H14A—C14—H14C | 109.5 |
C5—C4—H4A | 109.7 | H14B—C14—H14C | 109.5 |
O1—C5—C6 | 108.5 (3) | N1—C15—N2 | 114.9 (4) |
O1—C5—C4 | 106.8 (3) | N1—C15—S1 | 125.8 (3) |
C6—C5—C4 | 115.2 (4) | N2—C15—S1 | 119.3 (3) |
O1—C5—H5A | 108.7 | N4—C16—N3 | 117.6 (5) |
C6—C5—H5A | 108.7 | N4—C16—S2 | 124.1 (4) |
C4—C5—H5A | 108.7 | N3—C16—S2 | 118.2 (4) |
C15—N2—N3—C16 | −107.9 (5) | C1—O1—C5—C6 | −169.4 (3) |
C5—O1—C1—N1 | −178.7 (3) | C1—O1—C5—C4 | 65.9 (4) |
C5—O1—C1—C2 | −58.6 (4) | O4—C4—C5—O1 | 175.5 (3) |
C15—N1—C1—O1 | −116.8 (4) | C3—C4—C5—O1 | −65.3 (4) |
C15—N1—C1—C2 | 122.3 (5) | O4—C4—C5—C6 | 54.9 (5) |
C13—O8—C2—C1 | 103.9 (4) | C3—C4—C5—C6 | 174.1 (4) |
C13—O8—C2—C3 | −134.9 (4) | C7—O2—C6—C5 | −125.6 (4) |
O1—C1—C2—O8 | 168.0 (3) | O1—C5—C6—O2 | −64.5 (4) |
N1—C1—C2—O8 | −74.2 (4) | C4—C5—C6—O2 | 55.1 (5) |
O1—C1—C2—C3 | 49.5 (4) | C6—O2—C7—O3 | 0.8 (7) |
N1—C1—C2—C3 | 167.3 (3) | C6—O2—C7—C8 | −178.4 (5) |
C11—O6—C3—C4 | 129.2 (4) | C4—O4—C9—O5 | 2.9 (7) |
C11—O6—C3—C2 | −112.1 (4) | C4—O4—C9—C10 | −176.6 (4) |
O8—C2—C3—O6 | 73.5 (4) | C3—O6—C11—O7 | 7.1 (7) |
C1—C2—C3—O6 | −168.1 (3) | C3—O6—C11—C12 | −173.9 (4) |
O8—C2—C3—C4 | −168.2 (3) | C2—O8—C13—O9 | 3.6 (7) |
C1—C2—C3—C4 | −49.9 (4) | C2—O8—C13—C14 | −175.8 (4) |
C9—O4—C4—C3 | 115.1 (4) | C1—N1—C15—N2 | 176.3 (4) |
C9—O4—C4—C5 | −125.6 (4) | C1—N1—C15—S1 | −5.0 (7) |
O6—C3—C4—O4 | −63.5 (4) | N3—N2—C15—N1 | 8.6 (6) |
C2—C3—C4—O4 | 177.8 (3) | N3—N2—C15—S1 | −170.2 (3) |
O6—C3—C4—C5 | 176.4 (3) | N2—N3—C16—N4 | 12.4 (7) |
C2—C3—C4—C5 | 57.7 (4) | N2—N3—C16—S2 | −166.9 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H10···O5i | 0.868 (10) | 2.637 (4) | 3.382 (11) | 144.5 (5) |
O1W—H20···O9ii | 0.867 (8) | 2.563 (4) | 3.181 (9) | 129.1 (5) |
N1—H1A···S2iii | 0.86 | 2.62 | 3.400 (4) | 151 |
N2—H2A···O3iv | 0.86 | 2.09 | 2.856 (5) | 147 |
N3—H3A···O1Wv | 0.86 | 2.13 | 2.973 (9) | 167 |
N4—H4B···O1Wvi | 0.86 | 2.43 | 3.244 (9) | 159 |
N4—H4C···O1iii | 0.86 | 2.49 | 3.323 (5) | 164 |
Symmetry codes: (i) x−1/2, y−1/2, z; (ii) x−1, y, z; (iii) −x+2, y, −z+1; (iv) x+1/2, y−1/2, z; (v) x+1, y, z; (vi) x+1, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C16H24N4O9S2·H2O |
Mr | 498.53 |
Crystal system, space group | Monoclinic, C2 |
Temperature (K) | 293 |
a, b, c (Å) | 22.286 (2), 7.2005 (7), 15.8772 (17) |
β (°) | 110.119 (2) |
V (Å3) | 2392.3 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.28 |
Crystal size (mm) | 0.45 × 0.22 × 0.22 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6322, 3525, 3021 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.055, 0.141, 1.07 |
No. of reflections | 3525 |
No. of parameters | 289 |
No. of restraints | 7 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.42, −0.27 |
Absolute structure | Flack (1983), 1229 Friedel pairs |
Absolute structure parameter | −0.16 (12) |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H10···O5i | 0.868 (10) | 2.637 (4) | 3.382 (11) | 144.5 (5) |
O1W—H20···O9ii | 0.867 (8) | 2.563 (4) | 3.181 (9) | 129.1 (5) |
N1—H1A···S2iii | 0.86 | 2.62 | 3.400 (4) | 151 |
N2—H2A···O3iv | 0.86 | 2.09 | 2.856 (5) | 147 |
N3—H3A···O1Wv | 0.86 | 2.13 | 2.973 (9) | 167 |
N4—H4B···O1Wvi | 0.86 | 2.43 | 3.244 (9) | 159 |
N4—H4C···O1iii | 0.86 | 2.49 | 3.323 (5) | 164 |
Symmetry codes: (i) x−1/2, y−1/2, z; (ii) x−1, y, z; (iii) −x+2, y, −z+1; (iv) x+1/2, y−1/2, z; (v) x+1, y, z; (vi) x+1, y+1, z. |
Acknowledgements
The project was supported by the National Natural Science Foundation of China (No. 30701041) and the Scientific Research Project of Inner Mongolia Autonomous Region Colleges and Universities (No. NJZY08149).
References
Bruker (2007). SMART and SAINT. Bruker AXS Inc., Madison,Wisconsin, USA. Google Scholar
Flack, H. D. (1983). Acta Cryst. A39, 876–881. CrossRef CAS Web of Science IUCr Journals Google Scholar
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Over the past decade, many organic chemists have been engaged in the synthesis of glycosyl isothiosyanates and its derivatives. These compound are versatile reagents in organic synthesis and easily undergo many important reactions, such as cycloaddition (Pearson et al., 2003) and nucleophilic addition (Reitz et al., 1989). Recently, the crystal structures of glycosyl isothiosyanate (Jiang et al., 2003) and the methanol and ethanol derivatives (Zhang et al., 2001) have been reported. However, other derivatives of glycosyl isothiosyanate are still rare. Here we report on the synthesis of a new thiosemicarbazide derivative of glycosyl isothiosyanate, 2,3,4,6-tetra-O-acetyl- β-D-glucopyranosyl dithiourea, (I).
The molecular structure of compound (I) is illustrated in Fig. 1. The hexopyranosyl ring adopts a chair conformation (4C1), and the four substituents are in equatorial positions.
In the crystal extensive O—H···O, N—H···S and N—H···O hydrogen bonding (Table 1) leads to the formation of a three-dimensional network.