Literature DB >> 21523096

Carb-oxy-methyl ursolate monohydrate.

Yan Zhong, Zhaohui Dai, Yanbo Teng, Bin Wu, Jianping Zhou.   

Abstract

In the title compound, C(28)H(50)O(5)·H(2)O, all of the six-membered rings of the penta-cyclic triterpene skeleton adopt chair conformations. In the crystal, mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds.

Entities:  

Year:  2011        PMID: 21523096      PMCID: PMC3051648          DOI: 10.1107/S1600536811001619

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For the synthesis, see: Wen et al. (2006 ▶). The crystal structure of ursolic acid is known from its ethanol solvate, see: Simon et al. (1992 ▶). For methyl uroslate-3-bromo­acetate, see: Stout & Stevens (1963 ▶). For methyl ursolate-3-p-bromo­benzoate, see: Paton & Paul (1979 ▶). For background to ursolic acid derivatives and their biological activity, see: Es-saady et al. (1996 ▶). For bond-length data, see: Allen et al. (1987 ▶).

Experimental

Crystal data

C32H50O5·H2O M = 532.74 Monoclinic, a = 13.338 (3) Å b = 8.1010 (16) Å c = 14.311 (3) Å β = 106.26 (3)° V = 1484.5 (5) Å3 Z = 2 Mo Kα radiation μ = 0.08 mm−1 T = 293 K 0.30 × 0.20 × 0.10 mm

Data collection

Enraf–Nonius CAD-4 diffractometer Absorption correction: ψ scan (North et al., 1968 ▶) T min = 0.976, T max = 0.992 5692 measured reflections 5446 independent reflections 4536 reflections with I > 2σ(I) R int = 0.025 3 standard reflections every 200 reflections intensity decay: 1%

Refinement

R[F 2 > 2σ(F 2)] = 0.048 wR(F 2) = 0.134 S = 1.00 5446 reflections 350 parameters 1 restraint H-atom parameters constrained Δρmax = 0.18 e Å−3 Δρmin = −0.23 e Å−3 Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1994) ▶; cell refinement: CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo, 1995 ▶); 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. Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536811001619/hb5787sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536811001619/hb5787Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C32H50O5·H2OF(000) = 584
Mr = 532.74Dx = 1.192 Mg m3
Monoclinic, P21Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2ybCell parameters from 25 reflections
a = 13.338 (3) Åθ = 9–13°
b = 8.1010 (16) ŵ = 0.08 mm1
c = 14.311 (3) ÅT = 293 K
β = 106.26 (3)°Block, colorless
V = 1484.5 (5) Å30.30 × 0.20 × 0.10 mm
Z = 2
Enraf–Nonius CAD-4 diffractometer4536 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.025
graphiteθmax = 25.4°, θmin = 1.5°
ω/2θ scansh = 0→16
Absorption correction: ψ scan (North et al., 1968)k = −9→9
Tmin = 0.976, Tmax = 0.992l = −17→16
5692 measured reflections3 standard reflections every 200 reflections
5446 independent reflections intensity decay: 1%
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.048Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.134H-atom parameters constrained
S = 1.00w = 1/[σ2(Fo2) + (0.094P)2] where P = (Fo2 + 2Fc2)/3
5446 reflections(Δ/σ)max < 0.001
350 parametersΔρmax = 0.18 e Å3
1 restraintΔρmin = −0.23 e Å3
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.
xyzUiso*/Ueq
O10.85435 (16)0.1230 (3)0.65587 (19)0.0785 (7)
H1A0.86270.02290.66210.118*
C10.7706 (2)0.1725 (3)0.6936 (2)0.0484 (6)
H1B0.79110.14900.76360.058*
C20.6748 (2)0.0714 (3)0.64682 (19)0.0456 (6)
H2A0.6903−0.04470.66010.055*
H2B0.65570.08710.57690.055*
O20.16556 (16)0.8730 (2)0.72389 (16)0.0640 (6)
O30.09919 (14)0.6206 (2)0.68621 (12)0.0547 (5)
C30.58375 (18)0.1207 (3)0.68505 (18)0.0401 (5)
H3A0.60090.09510.75390.048*
H3B0.52310.05570.65210.048*
C40.55611 (17)0.3049 (3)0.67043 (15)0.0359 (5)
O4−0.07654 (15)0.8025 (2)0.65381 (14)0.0564 (5)
C50.65734 (17)0.4056 (3)0.71361 (16)0.0343 (5)
H5A0.67710.37940.78320.041*
O5−0.10926 (14)0.7942 (3)0.49516 (14)0.0579 (5)
H5B−0.08790.76650.44670.069*
C60.75574 (19)0.3587 (3)0.68039 (18)0.0425 (6)
C70.48023 (17)0.3472 (3)0.73329 (16)0.0343 (5)
H7A0.51600.30670.79870.041*
C90.56111 (19)0.6301 (3)0.77258 (17)0.0404 (5)
H9A0.54490.74700.76690.048*
H9B0.59870.60850.83990.048*
C100.6324 (2)0.5904 (3)0.70921 (18)0.0424 (6)
H10A0.69680.65290.73160.051*
H10B0.59870.62210.64250.051*
C110.3777 (2)0.2509 (3)0.7033 (2)0.0544 (7)
H11A0.34940.25720.63320.065*
H11B0.39200.13570.72040.065*
C120.29722 (17)0.3121 (3)0.74972 (17)0.0420 (5)
H12A0.23500.25310.73640.050*
C130.30539 (16)0.4407 (3)0.80729 (15)0.0330 (5)
C140.40501 (17)0.5457 (3)0.83295 (15)0.0326 (5)
C150.45858 (18)0.5331 (3)0.74771 (16)0.0353 (5)
C160.21627 (17)0.4787 (3)0.85160 (16)0.0350 (5)
H16A0.15340.42920.80800.042*
C170.19584 (18)0.6672 (3)0.85059 (17)0.0373 (5)
C180.29810 (19)0.7566 (3)0.90141 (18)0.0416 (5)
H18A0.28450.87390.90370.050*
H18B0.32340.71720.96790.050*
C190.38151 (19)0.7295 (3)0.84990 (17)0.0390 (5)
H19A0.44560.78140.88780.047*
H19B0.36020.78470.78730.047*
C200.1086 (2)0.7089 (3)0.89839 (19)0.0486 (6)
H20A0.10450.82780.90440.058*
H20B0.04230.67080.85640.058*
C210.1263 (2)0.6317 (4)0.99763 (19)0.0533 (7)
H21A0.06790.65801.02290.064*
H21B0.18890.67801.04170.064*
C220.1377 (2)0.4456 (3)0.99400 (18)0.0480 (6)
H22A0.07360.40100.94980.058*
C230.22925 (19)0.4004 (3)0.95339 (17)0.0411 (5)
H23A0.29370.44310.99810.049*
C240.8518 (2)0.4416 (4)0.7495 (2)0.0584 (7)
H24A0.85260.42010.81570.088*
H24B0.84860.55850.73810.088*
H24C0.91410.39790.73780.088*
C250.7499 (3)0.4133 (4)0.5764 (2)0.0605 (7)
H25A0.81610.39420.56400.091*
H25B0.73330.52880.56920.091*
H25C0.69670.35120.53100.091*
C260.5071 (2)0.3335 (4)0.56091 (17)0.0514 (7)
H26A0.54370.26910.52470.077*
H26B0.51200.44840.54630.077*
H26C0.43500.30100.54340.077*
C270.3843 (2)0.6049 (4)0.65303 (17)0.0512 (6)
H27A0.41320.58530.59960.077*
H27B0.37650.72150.66060.077*
H27C0.31730.55220.64020.077*
C280.47549 (17)0.4806 (3)0.93108 (16)0.0402 (5)
H28A0.44400.50580.98210.060*
H28B0.54280.53230.94490.060*
H28C0.48330.36320.92720.060*
C290.2394 (3)0.2128 (4)0.9468 (2)0.0610 (8)
H29A0.25340.16561.01070.092*
H29B0.29570.18710.91970.092*
H29C0.17550.16810.90590.092*
C300.1508 (3)0.3706 (4)1.0951 (2)0.0671 (8)
H30A0.09860.41511.12250.101*
H30B0.21890.39671.13650.101*
H30C0.14290.25291.08940.101*
C310.15463 (19)0.7326 (3)0.74804 (19)0.0441 (6)
C320.0496 (2)0.6730 (4)0.58938 (19)0.0587 (8)
H32A0.03590.57780.54660.070*
H32B0.09600.74640.56760.070*
C33−0.0518 (2)0.7612 (3)0.58279 (19)0.0435 (6)
OW−0.04995 (14)0.6584 (3)0.35682 (15)0.0641 (6)
HWB−0.03150.55780.36560.077*
HWA0.00650.67020.33930.077*
U11U22U33U12U13U23
O10.0566 (12)0.0473 (12)0.149 (2)0.0031 (10)0.0575 (14)−0.0128 (13)
C10.0439 (14)0.0373 (13)0.0673 (16)0.0051 (11)0.0211 (13)−0.0026 (12)
C20.0506 (15)0.0300 (12)0.0590 (15)0.0019 (11)0.0198 (12)−0.0073 (11)
O20.0589 (12)0.0472 (11)0.0797 (14)0.0059 (9)0.0092 (10)0.0249 (10)
O30.0641 (12)0.0464 (10)0.0434 (9)0.0193 (9)−0.0018 (8)0.0006 (8)
C30.0411 (12)0.0271 (11)0.0542 (13)−0.0019 (10)0.0168 (11)−0.0084 (10)
C40.0370 (11)0.0288 (11)0.0405 (12)0.0031 (10)0.0084 (9)−0.0033 (10)
O40.0618 (12)0.0465 (10)0.0634 (12)0.0084 (10)0.0216 (9)−0.0023 (9)
C50.0372 (12)0.0294 (11)0.0362 (11)−0.0002 (9)0.0101 (9)0.0005 (9)
O50.0508 (10)0.0576 (12)0.0575 (11)0.0168 (10)0.0024 (8)0.0007 (9)
C60.0440 (13)0.0324 (12)0.0562 (15)−0.0022 (10)0.0222 (12)−0.0042 (11)
C70.0353 (12)0.0282 (12)0.0380 (11)−0.0007 (9)0.0077 (9)−0.0044 (9)
C90.0486 (13)0.0246 (11)0.0507 (13)−0.0019 (10)0.0183 (11)−0.0061 (10)
C100.0492 (14)0.0270 (12)0.0527 (14)−0.0007 (10)0.0169 (11)0.0021 (10)
C110.0432 (14)0.0457 (15)0.0740 (19)−0.0102 (12)0.0158 (13)−0.0316 (14)
C120.0306 (11)0.0400 (12)0.0520 (13)−0.0038 (10)0.0056 (10)−0.0125 (11)
C130.0327 (11)0.0267 (10)0.0354 (11)0.0058 (9)0.0026 (9)0.0019 (9)
C140.0335 (11)0.0267 (11)0.0344 (11)0.0019 (9)0.0041 (9)−0.0036 (9)
C150.0386 (12)0.0287 (11)0.0354 (11)0.0042 (9)0.0051 (10)−0.0009 (9)
C160.0325 (11)0.0284 (11)0.0397 (12)0.0027 (9)0.0027 (9)−0.0004 (9)
C170.0379 (12)0.0262 (11)0.0471 (13)0.0069 (9)0.0110 (10)0.0008 (9)
C180.0464 (13)0.0275 (11)0.0488 (13)0.0016 (10)0.0101 (11)−0.0074 (10)
C190.0429 (13)0.0281 (12)0.0448 (13)−0.0030 (10)0.0102 (10)−0.0089 (10)
C200.0476 (15)0.0393 (14)0.0612 (16)0.0113 (11)0.0191 (12)−0.0049 (12)
C210.0541 (15)0.0531 (16)0.0594 (16)0.0007 (13)0.0268 (13)−0.0073 (13)
C220.0497 (14)0.0460 (15)0.0488 (14)−0.0057 (12)0.0144 (11)−0.0037 (12)
C230.0424 (13)0.0363 (13)0.0416 (13)−0.0011 (10)0.0068 (10)−0.0003 (10)
C240.0451 (14)0.0475 (15)0.084 (2)−0.0076 (12)0.0208 (14)−0.0105 (15)
C250.0755 (19)0.0542 (17)0.0652 (18)−0.0055 (15)0.0418 (16)−0.0010 (14)
C260.0559 (16)0.0558 (17)0.0403 (13)0.0059 (13)0.0101 (11)−0.0091 (12)
C270.0602 (16)0.0487 (15)0.0409 (13)0.0173 (13)0.0080 (11)0.0033 (11)
C280.0357 (11)0.0447 (14)0.0363 (12)0.0013 (10)0.0036 (9)−0.0010 (10)
C290.074 (2)0.0428 (16)0.0670 (18)0.0079 (14)0.0207 (16)0.0121 (13)
C300.078 (2)0.068 (2)0.0618 (18)−0.0087 (16)0.0303 (16)0.0056 (14)
C310.0369 (13)0.0399 (14)0.0553 (14)0.0104 (11)0.0127 (11)0.0045 (12)
C320.0658 (18)0.0592 (18)0.0459 (14)0.0277 (15)0.0073 (13)0.0019 (12)
C330.0465 (13)0.0279 (12)0.0528 (15)0.0019 (10)0.0086 (12)0.0017 (10)
OW0.0455 (10)0.0595 (13)0.0849 (14)0.0056 (9)0.0141 (10)−0.0206 (11)
O1—C11.427 (3)C16—H16A0.9800
O1—H1A0.8200C17—C311.512 (3)
C1—C21.508 (4)C17—C181.536 (3)
C1—C61.526 (3)C17—C201.543 (3)
C1—H1B0.9800C18—C191.513 (3)
C2—C31.518 (3)C18—H18A0.9700
C2—H2A0.9700C18—H18B0.9700
C2—H2B0.9700C19—H19A0.9700
O2—C311.209 (3)C19—H19B0.9700
O3—C311.337 (3)C20—C211.509 (4)
O3—C321.423 (3)C20—H20A0.9700
C3—C41.537 (3)C20—H20B0.9700
C3—H3A0.9700C21—C221.517 (4)
C3—H3B0.9700C21—H21A0.9700
C4—C261.538 (3)C21—H21B0.9700
C4—C51.551 (3)C22—C301.533 (4)
C4—C71.569 (3)C22—C231.536 (3)
O4—C331.201 (3)C22—H22A0.9800
C5—C101.531 (3)C23—C291.531 (4)
C5—C61.563 (3)C23—H23A0.9800
C5—H5A0.9800C24—H24A0.9600
O5—C331.301 (3)C24—H24B0.9600
O5—H5B0.8500C24—H24C0.9600
C6—C251.533 (4)C25—H25A0.9600
C6—C241.536 (4)C25—H25B0.9600
C7—C111.528 (3)C25—H25C0.9600
C7—C151.558 (3)C26—H26A0.9600
C7—H7A0.9800C26—H26B0.9600
C9—C101.521 (3)C26—H26C0.9600
C9—C151.530 (3)C27—H27A0.9600
C9—H9A0.9700C27—H27B0.9600
C9—H9B0.9700C27—H27C0.9600
C10—H10A0.9700C28—H28A0.9600
C10—H10B0.9700C28—H28B0.9600
C11—C121.496 (4)C28—H28C0.9600
C11—H11A0.9700C29—H29A0.9600
C11—H11B0.9700C29—H29B0.9600
C12—C131.314 (3)C29—H29C0.9600
C12—H12A0.9300C30—H30A0.9600
C13—C161.527 (3)C30—H30B0.9600
C13—C141.533 (3)C30—H30C0.9600
C14—C281.548 (3)C32—C331.508 (4)
C14—C191.555 (3)C32—H32A0.9700
C14—C151.580 (3)C32—H32B0.9700
C15—C271.550 (3)OW—HWB0.8500
C16—C171.550 (3)OW—HWA0.8634
C16—C231.553 (3)
C1—O1—H1A109.5C20—C17—C16111.3 (2)
O1—C1—C2109.6 (2)C19—C18—C17112.19 (18)
O1—C1—C6108.6 (2)C19—C18—H18A109.2
C2—C1—C6114.7 (2)C17—C18—H18A109.2
O1—C1—H1B107.9C19—C18—H18B109.2
C2—C1—H1B107.9C17—C18—H18B109.2
C6—C1—H1B107.9H18A—C18—H18B107.9
C1—C2—C3111.17 (19)C18—C19—C14115.02 (19)
C1—C2—H2A109.4C18—C19—H19A108.5
C3—C2—H2A109.4C14—C19—H19A108.5
C1—C2—H2B109.4C18—C19—H19B108.5
C3—C2—H2B109.4C14—C19—H19B108.5
H2A—C2—H2B108.0H19A—C19—H19B107.5
C31—O3—C32117.5 (2)C21—C20—C17112.9 (2)
C2—C3—C4113.07 (19)C21—C20—H20A109.0
C2—C3—H3A109.0C17—C20—H20A109.0
C4—C3—H3A109.0C21—C20—H20B109.0
C2—C3—H3B109.0C17—C20—H20B109.0
C4—C3—H3B109.0H20A—C20—H20B107.8
H3A—C3—H3B107.8C20—C21—C22111.7 (2)
C3—C4—C26107.61 (19)C20—C21—H21A109.3
C3—C4—C5107.93 (18)C22—C21—H21A109.3
C26—C4—C5113.6 (2)C20—C21—H21B109.3
C3—C4—C7107.62 (18)C22—C21—H21B109.3
C26—C4—C7113.15 (18)H21A—C21—H21B107.9
C5—C4—C7106.63 (17)C21—C22—C30110.3 (2)
C10—C5—C4110.11 (19)C21—C22—C23110.4 (2)
C10—C5—C6114.61 (19)C30—C22—C23111.7 (2)
C4—C5—C6117.54 (18)C21—C22—H22A108.1
C10—C5—H5A104.3C30—C22—H22A108.1
C4—C5—H5A104.3C23—C22—H22A108.1
C6—C5—H5A104.3C29—C23—C22110.7 (2)
C33—O5—H5B119.3C29—C23—C16109.6 (2)
C1—C6—C25112.0 (2)C22—C23—C16111.4 (2)
C1—C6—C24107.2 (2)C29—C23—H23A108.3
C25—C6—C24107.8 (2)C22—C23—H23A108.3
C1—C6—C5107.09 (19)C16—C23—H23A108.3
C25—C6—C5114.0 (2)C6—C24—H24A109.5
C24—C6—C5108.5 (2)C6—C24—H24B109.5
C11—C7—C15110.25 (19)H24A—C24—H24B109.5
C11—C7—C4113.45 (18)C6—C24—H24C109.5
C15—C7—C4117.41 (18)H24A—C24—H24C109.5
C11—C7—H7A104.8H24B—C24—H24C109.5
C15—C7—H7A104.8C6—C25—H25A109.5
C4—C7—H7A104.8C6—C25—H25B109.5
C10—C9—C15114.85 (19)H25A—C25—H25B109.5
C10—C9—H9A108.6C6—C25—H25C109.5
C15—C9—H9A108.6H25A—C25—H25C109.5
C10—C9—H9B108.6H25B—C25—H25C109.5
C15—C9—H9B108.6C4—C26—H26A109.5
H9A—C9—H9B107.5C4—C26—H26B109.5
C9—C10—C5110.30 (19)H26A—C26—H26B109.5
C9—C10—H10A109.6C4—C26—H26C109.5
C5—C10—H10A109.6H26A—C26—H26C109.5
C9—C10—H10B109.6H26B—C26—H26C109.5
C5—C10—H10B109.6C15—C27—H27A109.5
H10A—C10—H10B108.1C15—C27—H27B109.5
C12—C11—C7113.78 (19)H27A—C27—H27B109.5
C12—C11—H11A108.8C15—C27—H27C109.5
C7—C11—H11A108.8H27A—C27—H27C109.5
C12—C11—H11B108.8H27B—C27—H27C109.5
C7—C11—H11B108.8C14—C28—H28A109.5
H11A—C11—H11B107.7C14—C28—H28B109.5
C13—C12—C11126.7 (2)H28A—C28—H28B109.5
C13—C12—H12A116.7C14—C28—H28C109.5
C11—C12—H12A116.7H28A—C28—H28C109.5
C12—C13—C16118.9 (2)H28B—C28—H28C109.5
C12—C13—C14120.3 (2)C23—C29—H29A109.5
C16—C13—C14120.80 (18)C23—C29—H29B109.5
C13—C14—C28107.08 (18)H29A—C29—H29B109.5
C13—C14—C19111.68 (18)C23—C29—H29C109.5
C28—C14—C19106.42 (18)H29A—C29—H29C109.5
C13—C14—C15109.16 (17)H29B—C29—H29C109.5
C28—C14—C15112.80 (17)C22—C30—H30A109.5
C19—C14—C15109.69 (17)C22—C30—H30B109.5
C9—C15—C27108.7 (2)H30A—C30—H30B109.5
C9—C15—C7109.91 (18)C22—C30—H30C109.5
C27—C15—C7110.09 (19)H30A—C30—H30C109.5
C9—C15—C14110.80 (18)H30B—C30—H30C109.5
C27—C15—C14109.52 (18)O2—C31—O3122.5 (2)
C7—C15—C14107.78 (17)O2—C31—C17124.6 (3)
C13—C16—C17110.48 (19)O3—C31—C17112.8 (2)
C13—C16—C23114.31 (18)O3—C32—C33111.5 (2)
C17—C16—C23112.59 (19)O3—C32—H32A109.3
C13—C16—H16A106.3C33—C32—H32A109.3
C17—C16—H16A106.3O3—C32—H32B109.3
C23—C16—H16A106.3C33—C32—H32B109.3
C31—C17—C18109.12 (19)H32A—C32—H32B108.0
C31—C17—C20103.84 (19)O4—C33—O5122.0 (2)
C18—C17—C20111.50 (19)O4—C33—C32122.2 (2)
C31—C17—C16111.69 (19)O5—C33—C32115.7 (2)
C18—C17—C16109.25 (18)HWB—OW—HWA84.8
O1—C1—C2—C3−179.9 (2)C4—C7—C15—C14−165.94 (16)
C6—C1—C2—C3−57.5 (3)C13—C14—C15—C9−177.45 (18)
C1—C2—C3—C457.0 (3)C28—C14—C15—C9−58.5 (2)
C2—C3—C4—C2670.6 (3)C19—C14—C15—C959.9 (2)
C2—C3—C4—C5−52.4 (2)C13—C14—C15—C2762.6 (2)
C2—C3—C4—C7−167.17 (19)C28—C14—C15—C27−178.5 (2)
C3—C4—C5—C10−174.95 (18)C19—C14—C15—C27−60.1 (2)
C26—C4—C5—C1065.8 (2)C13—C14—C15—C7−57.2 (2)
C7—C4—C5—C10−59.6 (2)C28—C14—C15—C761.7 (2)
C3—C4—C5—C651.3 (3)C19—C14—C15—C7−179.83 (18)
C26—C4—C5—C6−67.9 (3)C12—C13—C16—C17−139.4 (2)
C7—C4—C5—C6166.72 (18)C14—C13—C16—C1743.4 (3)
O1—C1—C6—C2549.3 (3)C12—C13—C16—C2392.4 (3)
C2—C1—C6—C25−73.7 (3)C14—C13—C16—C23−84.8 (2)
O1—C1—C6—C24−68.8 (3)C13—C16—C17—C3166.4 (2)
C2—C1—C6—C24168.3 (2)C23—C16—C17—C31−164.42 (19)
O1—C1—C6—C5174.9 (2)C13—C16—C17—C18−54.4 (2)
C2—C1—C6—C552.0 (3)C23—C16—C17—C1874.8 (2)
C10—C5—C6—C1177.7 (2)C13—C16—C17—C20−177.98 (18)
C4—C5—C6—C1−50.6 (3)C23—C16—C17—C20−48.8 (3)
C10—C5—C6—C25−57.8 (3)C31—C17—C18—C19−60.7 (2)
C4—C5—C6—C2573.9 (3)C20—C17—C18—C19−174.8 (2)
C10—C5—C6—C2462.3 (3)C16—C17—C18—C1961.7 (2)
C4—C5—C6—C24−166.0 (2)C17—C18—C19—C14−53.9 (3)
C3—C4—C7—C11−61.6 (2)C13—C14—C19—C1837.8 (3)
C26—C4—C7—C1157.2 (3)C28—C14—C19—C18−78.7 (2)
C5—C4—C7—C11−177.2 (2)C15—C14—C19—C18158.94 (18)
C3—C4—C7—C15167.87 (19)C31—C17—C20—C21171.4 (2)
C26—C4—C7—C15−73.4 (3)C18—C17—C20—C21−71.2 (3)
C5—C4—C7—C1552.3 (2)C16—C17—C20—C2151.1 (3)
C15—C9—C10—C5−56.6 (3)C17—C20—C21—C22−56.5 (3)
C4—C5—C10—C963.7 (2)C20—C21—C22—C30−177.6 (2)
C6—C5—C10—C9−161.1 (2)C20—C21—C22—C2358.5 (3)
C15—C7—C11—C12−35.2 (3)C21—C22—C23—C29−178.4 (2)
C4—C7—C11—C12−169.2 (2)C30—C22—C23—C2958.4 (3)
C7—C11—C12—C133.6 (4)C21—C22—C23—C16−56.1 (3)
C11—C12—C13—C16−177.1 (2)C30—C22—C23—C16−179.3 (2)
C11—C12—C13—C140.2 (4)C13—C16—C23—C29−57.9 (3)
C12—C13—C14—C28−95.1 (2)C17—C16—C23—C29175.0 (2)
C16—C13—C14—C2882.1 (2)C13—C16—C23—C22179.22 (19)
C12—C13—C14—C19148.8 (2)C17—C16—C23—C2252.1 (3)
C16—C13—C14—C19−34.0 (3)C32—O3—C31—O2−1.8 (4)
C12—C13—C14—C1527.3 (3)C32—O3—C31—C17175.0 (2)
C16—C13—C14—C15−155.50 (18)C18—C17—C31—O2−32.5 (3)
C10—C9—C15—C27−74.9 (2)C20—C17—C31—O286.5 (3)
C10—C9—C15—C745.6 (3)C16—C17—C31—O2−153.4 (2)
C10—C9—C15—C14164.66 (18)C18—C17—C31—O3150.77 (19)
C11—C7—C15—C9−177.09 (19)C20—C17—C31—O3−90.2 (2)
C4—C7—C15—C9−45.1 (3)C16—C17—C31—O329.9 (3)
C11—C7—C15—C27−57.3 (3)C31—O3—C32—C33−81.0 (3)
C4—C7—C15—C2774.7 (2)O3—C32—C33—O410.7 (4)
C11—C7—C15—C1462.1 (2)O3—C32—C33—O5−171.2 (2)
D—H···AD—HH···AD···AD—H···A
OW—HWB···O2i0.852.412.839 (3)112
OW—HWB···O4i0.852.583.365 (3)154
O1—H1A···O4ii0.821.982.758 (3)159
OW—HWA···O1iii0.861.882.681 (3)154
O5—H5B···OW0.851.742.575 (3)165
C12—H12A···OWi0.932.573.455 (3)159
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
OW—HWB⋯O2i0.852.412.839 (3)112
OW—HWB⋯O4i0.852.583.365 (3)154
O1—H1A⋯O4ii0.821.982.758 (3)159
OW—HWA⋯O1iii0.861.882.681 (3)154
O5—H5B⋯OW0.851.742.575 (3)165
C12—H12A⋯OWi0.932.573.455 (3)159

Symmetry codes: (i) ; (ii) ; (iii) .

  3 in total

1.  Pentacyclic triterpenes. Part 2: Synthesis and biological evaluation of maslinic acid derivatives as glycogen phosphorylase inhibitors.

Authors:  Xiaoan Wen; Pu Zhang; Jun Liu; Luyong Zhang; Xiaoming Wu; Peizhou Ni; Hongbin Sun
Journal:  Bioorg Med Chem Lett       Date:  2005-10-21       Impact factor: 2.823

2.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

3.  Inhibitory effect of ursolic acid on B16 proliferation through cell cycle arrest.

Authors:  D Es-saady; A Simon; M Ollier; J C Maurizis; A J Chulia; C Delage
Journal:  Cancer Lett       Date:  1996-09-10       Impact factor: 8.679

  3 in total

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