organic compounds
tert-Butyl 2-deoxy-4,5-O-isopropylidene-D-gluconate
aDepartment of Organic Chemistry, Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, England, and bDepartment of Chemical Crystallography, Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, England
*Correspondence e-mail: sarah.jenkinson@chem.ox.ac.uk
The tert-butyl 2-deoxy-4,5-O-isopropylidene-D-gluconate, C13H24O6, an intermediate in the synthesis of 2-deoxy sugars, was determined by X-ray crystallography, and the consists of chains of O—H⋯O hydrogen-bonded molecules running parallel to the a axis. There are two molecules in the The was inferred from the use of D-erythronolactone as the starting material.
ofRelated literature
For background information, see: Granstrom et al. (2004); Izumori (2002, 2006); Rao et al. (2008); Yoshihara et al. (2008); Gullapalli et al. (2007); Jones et al. (2008). For related structures, see: Booth et al. (2008); Jenkinson, Booth, Gullapalli et al. (2008); Jenkinson, Booth, Yoshihara et al. (2008). For related literature, see: Görbitz (1999).
Experimental
Crystal data
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Refinement
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Data collection: COLLECT (Nonius, 2001).; cell DENZO/SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO/SCALEPACK; program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: CRYSTALS (Betteridge et al., 2003); molecular graphics: CAMERON (Watkin et al., 1996); software used to prepare material for publication: CRYSTALS.
Supporting information
10.1107/S160053680803064X/lh2696sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053680803064X/lh2696Isup2.hkl
The title compound was recrystallized from toluene: m.p. 345–347 K; [α]D22 +10.7 (c, 0.99 in CHCl3).
In the absence of significant
Friedel pairs were merged and the was assigned from the starting material.The relatively large ratio of minimum to maximum corrections applied in the multiscan process (1:1.37) reflect changes in the illuminated volume of the crystal. Changes in illuminated volume were kept to a minimum, and were taken into account (Görbitz, 1999) by the multi-scan inter-frame scaling (DENZO/SCALEPACK, Otwinowski & Minor, 1997).
The H atoms were all located in a difference map, but those attached to carbon atoms were repositioned geometrically. The H atoms were initially refined with soft restraints on the bond lengths and angles to regularize their geometry (C—H in the range 0.93–0.98, O—H = 0.82 Å) and Uiso(H) (in the range 1.2–1.5 times Ueq of the parent atom), after which the positions were refined with riding constraints.
Data collection: COLLECT (Nonius, 2001).; cell
DENZO/SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO/SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: CRYSTALS (Betteridge et al., 2003); molecular graphics: CAMERON (Watkin et al., 1996); software used to prepare material for publication: CRYSTALS (Betteridge et al., 2003).C13H24O6 | Z = 2 |
Mr = 276.33 | F(000) = 300 |
Triclinic, P1 | Dx = 1.216 Mg m−3 |
Hall symbol: P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 5.9366 (2) Å | Cell parameters from 3172 reflections |
b = 11.1694 (5) Å | θ = 5–27° |
c = 12.7530 (6) Å | µ = 0.10 mm−1 |
α = 113.413 (2)° | T = 150 K |
β = 100.3696 (19)° | Plate, colourless |
γ = 93.783 (2)° | 0.50 × 0.05 × 0.05 mm |
V = 754.42 (6) Å3 |
Nonius KappaCCD diffractometer | 2788 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.045 |
ω scans | θmax = 27.6°, θmin = 5.2° |
Absorption correction: multi-scan (DENZO/SCALEPACK; Otwinowski & Minor, 1997) | h = −7→7 |
Tmin = 0.73, Tmax = 1.00 | k = −14→14 |
11759 measured reflections | l = −16→15 |
3441 independent reflections |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.040 | w = 1/[σ2(F2) + (0.05P)2 + 0.04P], where P = [max(Fo2,0) + 2Fc2]/3 |
wR(F2) = 0.104 | (Δ/σ)max = 0.009 |
S = 0.97 | Δρmax = 0.29 e Å−3 |
3441 reflections | Δρmin = −0.37 e Å−3 |
344 parameters | Extinction correction: Larson (1970), Equation 22 |
3 restraints | Extinction coefficient: 300 (50) |
Primary atom site location: structure-invariant direct methods |
C13H24O6 | γ = 93.783 (2)° |
Mr = 276.33 | V = 754.42 (6) Å3 |
Triclinic, P1 | Z = 2 |
a = 5.9366 (2) Å | Mo Kα radiation |
b = 11.1694 (5) Å | µ = 0.10 mm−1 |
c = 12.7530 (6) Å | T = 150 K |
α = 113.413 (2)° | 0.50 × 0.05 × 0.05 mm |
β = 100.3696 (19)° |
Nonius KappaCCD diffractometer | 3441 independent reflections |
Absorption correction: multi-scan (DENZO/SCALEPACK; Otwinowski & Minor, 1997) | 2788 reflections with I > 2σ(I) |
Tmin = 0.73, Tmax = 1.00 | Rint = 0.045 |
11759 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 3 restraints |
wR(F2) = 0.104 | H-atom parameters constrained |
S = 0.97 | Δρmax = 0.29 e Å−3 |
3441 reflections | Δρmin = −0.37 e Å−3 |
344 parameters |
x | y | z | Uiso*/Ueq | ||
C1 | −0.0837 (4) | 0.8713 (3) | 0.3566 (2) | 0.0306 | |
C2 | −0.0148 (4) | 0.7957 (3) | 0.2427 (2) | 0.0322 | |
C3 | 0.1598 (5) | 0.7048 (3) | 0.2533 (2) | 0.0300 | |
C4 | 0.2288 (4) | 0.6384 (3) | 0.1362 (2) | 0.0296 | |
C5 | 0.3854 (4) | 0.5302 (2) | 0.1211 (2) | 0.0297 | |
C6 | 0.4988 (4) | 0.5130 (3) | 0.2286 (2) | 0.0338 | |
O7 | 0.1033 (3) | 0.94685 (18) | 0.43945 (15) | 0.0333 | |
C8 | 0.0854 (5) | 1.0276 (3) | 0.5600 (2) | 0.0342 | |
C9 | −0.0134 (6) | 0.9420 (4) | 0.6127 (3) | 0.0497 | |
C10 | −0.0575 (5) | 1.1357 (3) | 0.5601 (3) | 0.0448 | |
C11 | 0.3368 (5) | 1.0859 (3) | 0.6218 (3) | 0.0469 | |
O12 | −0.2796 (3) | 0.8666 (2) | 0.37003 (19) | 0.0434 | |
O13 | 0.0757 (3) | 0.61392 (18) | 0.29471 (16) | 0.0330 | |
O14 | 0.0195 (3) | 0.57145 (19) | 0.04704 (15) | 0.0335 | |
C15 | 0.0657 (5) | 0.4490 (3) | −0.0322 (2) | 0.0315 | |
C16 | −0.1538 (5) | 0.3507 (3) | −0.0776 (2) | 0.0403 | |
C17 | 0.1621 (5) | 0.4644 (3) | −0.1296 (2) | 0.0408 | |
O18 | 0.2336 (3) | 0.41137 (18) | 0.04004 (16) | 0.0325 | |
O19 | 0.6656 (3) | 0.4251 (2) | 0.20259 (18) | 0.0391 | |
C21 | 0.6774 (5) | 0.7195 (3) | 0.8287 (2) | 0.0356 | |
C22 | 0.8773 (5) | 0.7868 (3) | 0.9330 (2) | 0.0357 | |
C23 | 1.0405 (4) | 0.8902 (3) | 0.9222 (2) | 0.0306 | |
C24 | 1.2437 (5) | 0.9472 (3) | 1.0283 (2) | 0.0350 | |
C25 | 1.4344 (5) | 1.0537 (3) | 1.0373 (2) | 0.0327 | |
C26 | 1.4393 (5) | 1.0846 (3) | 0.9321 (2) | 0.0373 | |
O27 | 0.7534 (3) | 0.6588 (2) | 0.73097 (16) | 0.0386 | |
C28 | 0.5895 (5) | 0.5818 (3) | 0.6156 (2) | 0.0400 | |
C31 | 0.7540 (6) | 0.5357 (4) | 0.5339 (3) | 0.0531 | |
C30 | 0.4520 (6) | 0.4661 (4) | 0.6211 (3) | 0.0553 | |
C29 | 0.4360 (6) | 0.6706 (4) | 0.5831 (3) | 0.0533 | |
O32 | 0.4758 (4) | 0.7182 (2) | 0.8340 (2) | 0.0513 | |
O33 | 0.9021 (3) | 0.9849 (2) | 0.90964 (19) | 0.0433 | |
O34 | 1.1547 (4) | 1.0087 (2) | 1.13082 (17) | 0.0549 | |
C35 | 1.2946 (5) | 1.1313 (3) | 1.2071 (2) | 0.0377 | |
C36 | 1.1384 (6) | 1.2284 (4) | 1.2579 (3) | 0.0572 | |
C37 | 1.4752 (6) | 1.1154 (4) | 1.2987 (3) | 0.0593 | |
O38 | 1.4021 (3) | 1.17115 (18) | 1.13186 (15) | 0.0334 | |
O39 | 1.2520 (3) | 1.14885 (18) | 0.90474 (16) | 0.0354 | |
H21 | 0.0552 | 0.8664 | 0.2265 | 0.0350* | |
H374 | −0.1535 | 0.7491 | 0.1885 | 0.0343* | |
H31 | 0.3032 | 0.7527 | 0.3023 | 0.0358* | |
H41 | 0.3072 | 0.7113 | 0.1241 | 0.0318* | |
H51 | 0.5123 | 0.5565 | 0.0937 | 0.0299* | |
H61 | 0.5785 | 0.5972 | 0.2854 | 0.0415* | |
H62 | 0.3842 | 0.4867 | 0.2676 | 0.0379* | |
H91 | 0.0091 | 0.9931 | 0.6969 | 0.0748* | |
H92 | −0.1781 | 0.9090 | 0.5741 | 0.0753* | |
H93 | 0.0708 | 0.8666 | 0.5969 | 0.0762* | |
H101 | −0.0695 | 1.1892 | 0.6383 | 0.0603* | |
H102 | 0.0184 | 1.1924 | 0.5310 | 0.0619* | |
H103 | −0.2112 | 1.0937 | 0.5094 | 0.0604* | |
H111 | 0.3490 | 1.1432 | 0.7056 | 0.0638* | |
H112 | 0.3911 | 1.1360 | 0.5817 | 0.0621* | |
H113 | 0.4303 | 1.0139 | 0.6121 | 0.0605* | |
H161 | −0.1335 | 0.2644 | −0.1356 | 0.0533* | |
H162 | −0.2710 | 0.3893 | −0.1118 | 0.0541* | |
H163 | −0.2018 | 0.3427 | −0.0102 | 0.0533* | |
H171 | 0.2104 | 0.3825 | −0.1764 | 0.0583* | |
H172 | 0.0439 | 0.4833 | −0.1809 | 0.0615* | |
H173 | 0.2932 | 0.5356 | −0.0931 | 0.0603* | |
H221 | 0.8135 | 0.8309 | 1.0028 | 0.0370* | |
H222 | 0.9674 | 0.7230 | 0.9470 | 0.0375* | |
H231 | 1.1005 | 0.8416 | 0.8441 | 0.0329* | |
H241 | 1.3149 | 0.8725 | 1.0324 | 0.0438* | |
H251 | 1.5871 | 1.0245 | 1.0503 | 0.0384* | |
H261 | 1.5857 | 1.1453 | 0.9544 | 0.0459* | |
H262 | 1.4308 | 1.0016 | 0.8639 | 0.0418* | |
H311 | 0.6643 | 0.4781 | 0.4559 | 0.0697* | |
H312 | 0.8410 | 0.6073 | 0.5269 | 0.0725* | |
H313 | 0.8602 | 0.4848 | 0.5575 | 0.0711* | |
H301 | 0.3512 | 0.4153 | 0.5456 | 0.0753* | |
H302 | 0.3615 | 0.5007 | 0.6793 | 0.0752* | |
H303 | 0.5565 | 0.4129 | 0.6424 | 0.0755* | |
H291 | 0.3550 | 0.6232 | 0.5002 | 0.0783* | |
H292 | 0.3233 | 0.6922 | 0.6327 | 0.0779* | |
H293 | 0.5342 | 0.7508 | 0.5961 | 0.0786* | |
H361 | 1.2311 | 1.3140 | 1.3097 | 0.0856* | |
H362 | 1.0554 | 1.1946 | 1.3015 | 0.0842* | |
H363 | 1.0313 | 1.2354 | 1.1954 | 0.0846* | |
H371 | 1.5676 | 1.2009 | 1.3512 | 0.0897* | |
H372 | 1.3954 | 1.0796 | 1.3409 | 0.0880* | |
H373 | 1.5744 | 1.0553 | 1.2600 | 0.0883* | |
H22 | 0.6069 | 0.3443 | 0.1745 | 0.0550* | |
H37 | 0.9988 | 1.0407 | 0.9081 | 0.0730* | |
H49 | −0.0394 | 0.5617 | 0.2550 | 0.0476* | |
H5 | 1.2694 | 1.2233 | 0.9597 | 0.0500* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0284 (13) | 0.0241 (13) | 0.0345 (13) | 0.0024 (10) | 0.0056 (10) | 0.0082 (11) |
C2 | 0.0343 (13) | 0.0255 (13) | 0.0318 (12) | 0.0046 (10) | 0.0077 (10) | 0.0069 (11) |
C3 | 0.0297 (12) | 0.0274 (13) | 0.0316 (12) | 0.0024 (10) | 0.0081 (9) | 0.0109 (11) |
C4 | 0.0343 (13) | 0.0236 (13) | 0.0312 (12) | 0.0027 (10) | 0.0103 (10) | 0.0110 (11) |
C5 | 0.0298 (12) | 0.0228 (13) | 0.0335 (12) | 0.0009 (10) | 0.0102 (10) | 0.0079 (10) |
C6 | 0.0298 (12) | 0.0320 (14) | 0.0391 (14) | 0.0067 (11) | 0.0087 (10) | 0.0136 (11) |
O7 | 0.0300 (9) | 0.0307 (10) | 0.0312 (9) | 0.0033 (7) | 0.0109 (7) | 0.0030 (8) |
C8 | 0.0352 (13) | 0.0356 (15) | 0.0266 (12) | 0.0057 (11) | 0.0112 (10) | 0.0058 (11) |
C9 | 0.0574 (19) | 0.0531 (19) | 0.0414 (15) | 0.0020 (15) | 0.0160 (14) | 0.0213 (15) |
C10 | 0.0477 (16) | 0.0340 (16) | 0.0424 (16) | 0.0098 (13) | 0.0092 (13) | 0.0053 (13) |
C11 | 0.0385 (16) | 0.0500 (19) | 0.0384 (14) | 0.0013 (13) | 0.0060 (12) | 0.0063 (14) |
O12 | 0.0297 (10) | 0.0414 (12) | 0.0477 (11) | 0.0036 (8) | 0.0120 (8) | 0.0059 (9) |
O13 | 0.0321 (9) | 0.0332 (10) | 0.0339 (9) | 0.0005 (7) | 0.0081 (7) | 0.0147 (8) |
O14 | 0.0379 (10) | 0.0288 (10) | 0.0280 (9) | 0.0092 (8) | 0.0063 (7) | 0.0057 (8) |
C15 | 0.0414 (15) | 0.0258 (13) | 0.0253 (11) | 0.0103 (11) | 0.0086 (10) | 0.0073 (10) |
C16 | 0.0411 (15) | 0.0351 (15) | 0.0359 (14) | 0.0033 (12) | 0.0043 (11) | 0.0080 (12) |
C17 | 0.0532 (17) | 0.0378 (16) | 0.0294 (13) | 0.0083 (13) | 0.0126 (12) | 0.0103 (12) |
O18 | 0.0370 (10) | 0.0227 (9) | 0.0354 (9) | 0.0049 (7) | 0.0046 (7) | 0.0110 (8) |
O19 | 0.0311 (9) | 0.0307 (10) | 0.0510 (11) | 0.0069 (8) | 0.0077 (8) | 0.0129 (9) |
C21 | 0.0399 (15) | 0.0298 (15) | 0.0351 (14) | 0.0042 (11) | 0.0074 (11) | 0.0121 (12) |
C22 | 0.0425 (15) | 0.0291 (14) | 0.0307 (13) | 0.0038 (11) | 0.0035 (11) | 0.0100 (11) |
C23 | 0.0322 (13) | 0.0275 (13) | 0.0321 (12) | 0.0102 (10) | 0.0064 (10) | 0.0121 (11) |
C24 | 0.0422 (15) | 0.0286 (14) | 0.0331 (13) | 0.0028 (11) | 0.0042 (11) | 0.0140 (12) |
C25 | 0.0325 (13) | 0.0268 (13) | 0.0349 (13) | 0.0068 (10) | 0.0073 (10) | 0.0085 (11) |
C26 | 0.0428 (15) | 0.0322 (15) | 0.0400 (14) | 0.0115 (12) | 0.0153 (12) | 0.0146 (12) |
O27 | 0.0370 (10) | 0.0368 (11) | 0.0310 (9) | 0.0039 (8) | 0.0019 (8) | 0.0053 (8) |
C28 | 0.0374 (14) | 0.0404 (17) | 0.0348 (14) | −0.0020 (12) | 0.0015 (11) | 0.0120 (13) |
C31 | 0.0525 (19) | 0.059 (2) | 0.0333 (14) | 0.0006 (16) | 0.0091 (13) | 0.0060 (14) |
C30 | 0.066 (2) | 0.049 (2) | 0.0388 (16) | −0.0109 (16) | 0.0027 (14) | 0.0126 (15) |
C29 | 0.0459 (17) | 0.065 (2) | 0.0492 (17) | 0.0050 (16) | −0.0018 (14) | 0.0293 (17) |
O32 | 0.0376 (11) | 0.0576 (15) | 0.0490 (12) | 0.0053 (10) | 0.0111 (9) | 0.0120 (11) |
O33 | 0.0349 (10) | 0.0435 (12) | 0.0654 (14) | 0.0144 (9) | 0.0148 (9) | 0.0343 (11) |
O34 | 0.0727 (15) | 0.0466 (13) | 0.0281 (10) | −0.0250 (11) | 0.0114 (10) | 0.0031 (9) |
C35 | 0.0431 (15) | 0.0355 (15) | 0.0299 (13) | −0.0060 (12) | 0.0042 (11) | 0.0125 (12) |
C36 | 0.061 (2) | 0.062 (2) | 0.0487 (17) | 0.0073 (17) | 0.0258 (16) | 0.0180 (17) |
C37 | 0.067 (2) | 0.067 (2) | 0.0449 (18) | 0.0006 (18) | −0.0012 (16) | 0.0313 (18) |
O38 | 0.0384 (10) | 0.0290 (10) | 0.0301 (9) | 0.0022 (8) | 0.0085 (7) | 0.0097 (8) |
O39 | 0.0481 (11) | 0.0262 (9) | 0.0302 (9) | 0.0090 (8) | 0.0087 (8) | 0.0096 (8) |
C1—C2 | 1.508 (3) | C21—C22 | 1.504 (4) |
C1—O7 | 1.344 (3) | C21—O27 | 1.337 (3) |
C1—O12 | 1.206 (3) | C21—O32 | 1.210 (4) |
C2—C3 | 1.524 (4) | C22—C23 | 1.522 (4) |
C2—H21 | 0.977 | C22—H221 | 0.988 |
C2—H374 | 0.937 | C22—H222 | 0.971 |
C3—C4 | 1.526 (3) | C23—C24 | 1.522 (4) |
C3—O13 | 1.418 (3) | C23—O33 | 1.423 (3) |
C3—H31 | 0.940 | C23—H231 | 1.066 |
C4—C5 | 1.546 (4) | C24—C25 | 1.542 (4) |
C4—O14 | 1.445 (3) | C24—O34 | 1.429 (3) |
C4—H41 | 0.989 | C24—H241 | 0.975 |
C5—C6 | 1.504 (4) | C25—C26 | 1.516 (4) |
C5—O18 | 1.435 (3) | C25—O38 | 1.439 (3) |
C5—H51 | 0.961 | C25—H251 | 0.992 |
C6—O19 | 1.429 (3) | C26—O39 | 1.427 (3) |
C6—H61 | 0.954 | C26—H261 | 0.988 |
C6—H62 | 1.004 | C26—H262 | 0.978 |
O7—C8 | 1.469 (3) | O27—C28 | 1.490 (3) |
C8—C9 | 1.513 (4) | C28—C31 | 1.520 (4) |
C8—C10 | 1.521 (4) | C28—C30 | 1.514 (5) |
C8—C11 | 1.521 (4) | C28—C29 | 1.516 (5) |
C9—H91 | 0.974 | C31—H311 | 0.971 |
C9—H92 | 0.985 | C31—H312 | 0.967 |
C9—H93 | 0.977 | C31—H313 | 0.962 |
C10—H101 | 0.956 | C30—H301 | 0.960 |
C10—H102 | 0.974 | C30—H302 | 0.966 |
C10—H103 | 0.980 | C30—H303 | 0.964 |
C11—H111 | 0.990 | C29—H291 | 0.983 |
C11—H112 | 0.970 | C29—H292 | 0.979 |
C11—H113 | 0.987 | C29—H293 | 0.973 |
O13—H49 | 0.807 | O33—H37 | 0.827 |
O14—C15 | 1.420 (3) | O34—C35 | 1.418 (4) |
C15—C16 | 1.508 (4) | C35—C36 | 1.499 (5) |
C15—C17 | 1.520 (4) | C35—C37 | 1.512 (4) |
C15—O18 | 1.432 (3) | C35—O38 | 1.431 (3) |
C16—H161 | 0.986 | C36—H361 | 0.975 |
C16—H162 | 0.970 | C36—H362 | 0.967 |
C16—H163 | 0.987 | C36—H363 | 0.959 |
C17—H171 | 0.968 | C37—H371 | 0.976 |
C17—H172 | 0.965 | C37—H372 | 0.955 |
C17—H173 | 0.974 | C37—H373 | 0.967 |
O19—H22 | 0.849 | O39—H5 | 0.832 |
C2—C1—O7 | 110.2 (2) | C22—C21—O27 | 110.8 (2) |
C2—C1—O12 | 124.6 (2) | C22—C21—O32 | 124.2 (2) |
O7—C1—O12 | 125.2 (2) | O27—C21—O32 | 125.0 (3) |
C1—C2—C3 | 112.8 (2) | C21—C22—C23 | 113.8 (2) |
C1—C2—H21 | 102.3 | C21—C22—H221 | 108.0 |
C3—C2—H21 | 110.5 | C23—C22—H221 | 108.2 |
C1—C2—H374 | 105.5 | C21—C22—H222 | 111.0 |
C3—C2—H374 | 112.2 | C23—C22—H222 | 108.3 |
H21—C2—H374 | 112.9 | H221—C22—H222 | 107.4 |
C2—C3—C4 | 109.1 (2) | C22—C23—C24 | 110.0 (2) |
C2—C3—O13 | 111.77 (19) | C22—C23—O33 | 105.6 (2) |
C4—C3—O13 | 113.4 (2) | C24—C23—O33 | 113.9 (2) |
C2—C3—H31 | 111.7 | C22—C23—H231 | 106.9 |
C4—C3—H31 | 100.9 | C24—C23—H231 | 110.2 |
O13—C3—H31 | 109.6 | O33—C23—H231 | 109.8 |
C3—C4—C5 | 118.7 (2) | C23—C24—C25 | 119.8 (2) |
C3—C4—O14 | 107.8 (2) | C23—C24—O34 | 108.3 (2) |
C5—C4—O14 | 104.06 (19) | C25—C24—O34 | 104.3 (2) |
C3—C4—H41 | 105.0 | C23—C24—H241 | 106.4 |
C5—C4—H41 | 109.2 | C25—C24—H241 | 108.8 |
O14—C4—H41 | 112.2 | O34—C24—H241 | 108.9 |
C4—C5—C6 | 118.2 (2) | C24—C25—C26 | 119.6 (2) |
C4—C5—O18 | 103.49 (19) | C24—C25—O38 | 103.7 (2) |
C6—C5—O18 | 109.7 (2) | C26—C25—O38 | 108.4 (2) |
C4—C5—H51 | 105.4 | C24—C25—H251 | 108.9 |
C6—C5—H51 | 104.5 | C26—C25—H251 | 101.8 |
O18—C5—H51 | 116.0 | O38—C25—H251 | 115.1 |
C5—C6—O19 | 110.7 (2) | C25—C26—O39 | 113.7 (2) |
C5—C6—H61 | 107.6 | C25—C26—H261 | 105.0 |
O19—C6—H61 | 107.9 | O39—C26—H261 | 108.5 |
C5—C6—H62 | 113.0 | C25—C26—H262 | 108.2 |
O19—C6—H62 | 112.6 | O39—C26—H262 | 107.9 |
H61—C6—H62 | 104.6 | H261—C26—H262 | 113.6 |
C1—O7—C8 | 121.33 (19) | C21—O27—C28 | 121.5 (2) |
O7—C8—C9 | 110.5 (2) | O27—C28—C31 | 101.9 (2) |
O7—C8—C10 | 109.2 (2) | O27—C28—C30 | 109.1 (2) |
C9—C8—C10 | 112.6 (2) | C31—C28—C30 | 111.3 (3) |
O7—C8—C11 | 102.4 (2) | O27—C28—C29 | 110.2 (3) |
C9—C8—C11 | 110.9 (3) | C31—C28—C29 | 111.3 (3) |
C10—C8—C11 | 110.7 (3) | C30—C28—C29 | 112.6 (3) |
C8—C9—H91 | 109.0 | C28—C31—H311 | 108.8 |
C8—C9—H92 | 109.5 | C28—C31—H312 | 113.1 |
H91—C9—H92 | 112.0 | H311—C31—H312 | 106.9 |
C8—C9—H93 | 107.4 | C28—C31—H313 | 111.9 |
H91—C9—H93 | 110.2 | H311—C31—H313 | 106.7 |
H92—C9—H93 | 108.6 | H312—C31—H313 | 109.1 |
C8—C10—H101 | 109.9 | C28—C30—H301 | 108.4 |
C8—C10—H102 | 109.8 | C28—C30—H302 | 108.0 |
H101—C10—H102 | 108.0 | H301—C30—H302 | 109.9 |
C8—C10—H103 | 108.1 | C28—C30—H303 | 109.6 |
H101—C10—H103 | 110.7 | H301—C30—H303 | 110.6 |
H102—C10—H103 | 110.4 | H302—C30—H303 | 110.2 |
C8—C11—H111 | 110.5 | C28—C29—H291 | 108.4 |
C8—C11—H112 | 106.6 | C28—C29—H292 | 109.2 |
H111—C11—H112 | 111.1 | H291—C29—H292 | 110.0 |
C8—C11—H113 | 109.5 | C28—C29—H293 | 108.0 |
H111—C11—H113 | 111.5 | H291—C29—H293 | 111.1 |
H112—C11—H113 | 107.5 | H292—C29—H293 | 110.0 |
C3—O13—H49 | 118.0 | C23—O33—H37 | 102.0 |
C4—O14—C15 | 108.28 (18) | C24—O34—C35 | 110.3 (2) |
O14—C15—C16 | 108.2 (2) | O34—C35—C36 | 108.2 (3) |
O14—C15—C17 | 111.3 (2) | O34—C35—C37 | 110.9 (3) |
C16—C15—C17 | 112.9 (2) | C36—C35—C37 | 113.5 (3) |
O14—C15—O18 | 103.72 (19) | O34—C35—O38 | 104.4 (2) |
C16—C15—O18 | 109.1 (2) | C36—C35—O38 | 108.6 (3) |
C17—C15—O18 | 111.1 (2) | C37—C35—O38 | 110.6 (2) |
C15—C16—H161 | 111.7 | C35—C36—H361 | 109.6 |
C15—C16—H162 | 106.1 | C35—C36—H362 | 107.2 |
H161—C16—H162 | 111.4 | H361—C36—H362 | 110.4 |
C15—C16—H163 | 108.4 | C35—C36—H363 | 109.2 |
H161—C16—H163 | 111.4 | H361—C36—H363 | 110.6 |
H162—C16—H163 | 107.5 | H362—C36—H363 | 110.0 |
C15—C17—H171 | 109.6 | C35—C37—H371 | 109.8 |
C15—C17—H172 | 110.2 | C35—C37—H372 | 107.5 |
H171—C17—H172 | 107.4 | H371—C37—H372 | 110.8 |
C15—C17—H173 | 107.8 | C35—C37—H373 | 109.1 |
H171—C17—H173 | 110.7 | H371—C37—H373 | 109.7 |
H172—C17—H173 | 111.1 | H372—C37—H373 | 109.9 |
C5—O18—C15 | 106.46 (18) | C25—O38—C35 | 107.8 (2) |
C6—O19—H22 | 113.3 | C26—O39—H5 | 107.4 |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H21···O34i | 0.98 | 2.46 | 3.407 (4) | 164 |
C3—H31···O12ii | 0.94 | 2.54 | 3.442 (4) | 161 |
C9—H91···O39iii | 0.97 | 2.60 | 3.502 (4) | 154 |
C10—H103···O12 | 0.98 | 2.40 | 3.031 (4) | 121 |
C22—H222···O14iv | 0.97 | 2.50 | 3.349 (4) | 147 |
C30—H302···O32 | 0.97 | 2.40 | 3.009 (4) | 121 |
O19—H22···O38v | 0.85 | 2.03 | 2.861 (4) | 165 |
O33—H37···C26 | 0.83 | 2.57 | 3.231 (4) | 138 |
O33—H37···O39 | 0.83 | 1.88 | 2.703 (4) | 171 |
O13—H49···O19iii | 0.81 | 2.06 | 2.842 (4) | 162 |
O39—H5···O18vi | 0.83 | 1.98 | 2.771 (4) | 157 |
Symmetry codes: (i) x−1, y, z−1; (ii) x+1, y, z; (iii) x−1, y, z; (iv) x+1, y, z+1; (v) x−1, y−1, z−1; (vi) x+1, y+1, z+1. |
Experimental details
Crystal data | |
Chemical formula | C13H24O6 |
Mr | 276.33 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 150 |
a, b, c (Å) | 5.9366 (2), 11.1694 (5), 12.7530 (6) |
α, β, γ (°) | 113.413 (2), 100.3696 (19), 93.783 (2) |
V (Å3) | 754.42 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.50 × 0.05 × 0.05 |
Data collection | |
Diffractometer | Nonius KappaCCD diffractometer |
Absorption correction | Multi-scan (DENZO/SCALEPACK; Otwinowski & Minor, 1997) |
Tmin, Tmax | 0.73, 1.00 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11759, 3441, 2788 |
Rint | 0.045 |
(sin θ/λ)max (Å−1) | 0.652 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.104, 0.97 |
No. of reflections | 3441 |
No. of parameters | 344 |
No. of restraints | 3 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.29, −0.37 |
Computer programs: COLLECT (Nonius, 2001)., DENZO/SCALEPACK (Otwinowski & Minor, 1997), SIR92 (Altomare et al., 1994), CRYSTALS (Betteridge et al., 2003), CAMERON (Watkin et al., 1996).
D—H···A | D—H | H···A | D···A | D—H···A |
O19—H22···O38i | 0.85 | 2.03 | 2.861 (4) | 165 |
O13—H49···O19ii | 0.81 | 2.06 | 2.842 (4) | 162 |
O39—H5···O18iii | 0.83 | 1.98 | 2.771 (4) | 157 |
Symmetry codes: (i) x−1, y−1, z−1; (ii) x−1, y, z; (iii) x+1, y+1, z+1. |
Acknowledgements
We thank the Oxford University Crystallography Service for access to equipment.
References
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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.
The technique of Izumoring (Izumori, 2002; Izumori, 2006; Granstrom et al., 2004), the biotechnological interconversion of monosaccharides, has been seen to be generally applied to 1-deoxy-(Yoshihara et al., 2008; Booth et al., 2008; Jenkinson, Booth, Gullapalli et al., 2008; Jenkinson, Booth, Yoshihara et al., 2008; Gullapalli et al., 2007) and methyl-branched sugars (Rao et al., 2008; Jones et al., 2008). In order to extend this methodology further, a series of 2-deoxy sugars were synthesized via the addition of lithium tert-butyl acetate to sugar lactones. Thus, lithium tert-butyl acetate was added to D-erythronolactone 1 and on reduction two compounds were obtained (Fig. 1). One product was crystalline and was unequivocally identified by X-ray crystallography to be the tert-butyl 2-deoxy-4,5-O-isopropylidene-D-gluconate (Fig. 2), with the absolute configuration being determined by the use of D-erythronolactone as the starting material.
The X-ray structure shows that there are two molecules in the asymmetric unit, these only differ in the orientation of the terminal hydroxyl groups O19 and O39 (Fig. 3) (torsion angles C4-C5-C6-O19 = 69.2° and C24-C25-C26-O39 = -170.4°). The remainder of the residues are very similar (Fig.3). After least squares fitting of the residues (excluding O19 and O39) against each other, the r.m.s. positional discrepancy is 0.1270 Å, the r.m.s. bond length discrepancy is 0.0082 degrees, and the r.m.s. torsion angle deviation is 5.5037 degrees. The molecules form hydrogen-bonded chains running parallel to the a-axis (Fig. 4, Fig.5). Only classic intermolecular hydrogen bonding has been considered.