Literature DB >> 21523158

(22E,24R)-5α-Ergosta-2,22-dien-6-one.

Liu-Qing Sheng, Fang Zeng, Fei Chen, Chun-Nian Xia.   

Abstract

In the title mol-ecule, C(28)H(44)O, two six-membered rings have regular chair conformations, while the six-membered ring containing the C=C double bond exhibits a distorted chair conformation. The five-membered ring adopts an envelope conformation. In the crystal, weak inter-molecular C-H⋯O inter-actions link mol-ecules into chains along the b axis. The absolute configuration was assigned to correspond with that of the known chiral centres in a precursor mol-ecule.

Entities:  

Year:  2011        PMID: 21523158      PMCID: PMC3051496          DOI: 10.1107/S1600536811002388

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


Related literature

For details of the synthesis, see: McMorris & Patil (1993 ▶). For the crystal structure of the related compound (22E,24R)-3α,5-cyclo-5α-ergosta-22-en-6-one, see: Sheng et al. (2011 ▶).

Experimental

Crystal data

C28H44O M = 396.63 Monoclinic, a = 9.812 (3) Å b = 7.578 (2) Å c = 16.130 (5) Å β = 92.832 (4)° V = 1197.8 (6) Å3 Z = 2 Mo Kα radiation μ = 0.06 mm−1 T = 123 K 0.58 × 0.34 × 0.33 mm

Data collection

Rigaku AFC10/Saturn724+ diffractometer 10906 measured reflections 2908 independent reflections 2598 reflections with I > 2σ(I) R int = 0.030

Refinement

R[F 2 > 2σ(F 2)] = 0.042 wR(F 2) = 0.091 S = 1.03 2908 reflections 268 parameters 1 restraint H-atom parameters constrained Δρmax = 0.29 e Å−3 Δρmin = −0.14 e Å−3 Data collection: CrystalClear (Rigaku/MSC, 2008 ▶); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: PLATON (Spek, 2009 ▶); software used to prepare material for publication: publCIF (Westrip, 2010 ▶). Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536811002388/cv5027sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536811002388/cv5027Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C28H44OF(000) = 440
Mr = 396.63Dx = 1.100 Mg m3
Monoclinic, P21Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2ybCell parameters from 3421 reflections
a = 9.812 (3) Åθ = 3.2–27.5°
b = 7.578 (2) ŵ = 0.06 mm1
c = 16.130 (5) ÅT = 123 K
β = 92.832 (4)°Block, colourless
V = 1197.8 (6) Å30.58 × 0.34 × 0.33 mm
Z = 2
Rigaku AFC10/Saturn724+ diffractometer2598 reflections with I > 2σ(I)
Radiation source: Rotating AnodeRint = 0.030
graphiteθmax = 27.5°, θmin = 3.2°
Detector resolution: 28.5714 pixels mm-1h = −12→12
phi and ω scansk = −9→9
10906 measured reflectionsl = −20→20
2908 independent reflections
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.042Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.091H-atom parameters constrained
S = 1.03w = 1/[σ2(Fo2) + (0.0346P)2 + 0.296P] where P = (Fo2 + 2Fc2)/3
2908 reflections(Δ/σ)max < 0.001
268 parametersΔρmax = 0.29 e Å3
1 restraintΔρmin = −0.14 e Å3
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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
O10.41104 (19)−0.0462 (3)0.15251 (10)0.0498 (5)
C10.5886 (2)0.5431 (3)0.17436 (13)0.0335 (5)
H1A0.54440.66060.17290.040*
H1B0.65980.54380.22010.040*
C20.6558 (2)0.5130 (4)0.09327 (13)0.0374 (6)
H20.70450.60820.07040.045*
C30.6508 (2)0.3625 (4)0.05232 (13)0.0378 (6)
H30.69400.35620.00100.045*
C40.5807 (2)0.2008 (4)0.08234 (13)0.0377 (6)
H4A0.64140.09750.07680.045*
H4B0.49670.17970.04720.045*
C50.5433 (2)0.2187 (3)0.17289 (12)0.0295 (5)
H50.63030.20820.20750.035*
C60.4516 (2)0.0705 (3)0.19923 (13)0.0332 (5)
C70.4118 (2)0.0762 (3)0.28843 (13)0.0324 (5)
H7A0.49250.04800.32530.039*
H7B0.3416−0.01500.29700.039*
C80.3559 (2)0.2571 (3)0.31218 (12)0.0258 (4)
H80.26480.27420.28260.031*
C90.4513 (2)0.4064 (3)0.28672 (11)0.0243 (4)
H90.54070.38420.31740.029*
C100.4813 (2)0.4025 (3)0.19277 (12)0.0269 (5)
C110.4016 (2)0.5869 (3)0.31708 (12)0.0300 (5)
H11A0.31670.61920.28500.036*
H11B0.47120.67730.30600.036*
C120.3740 (2)0.5889 (3)0.41042 (12)0.0280 (5)
H12A0.46150.57430.44300.034*
H12B0.33520.70470.42500.034*
C130.27536 (19)0.4423 (3)0.43412 (11)0.0232 (4)
C140.3378 (2)0.2678 (3)0.40546 (12)0.0233 (4)
H140.43180.26250.43230.028*
C150.2560 (2)0.1243 (3)0.44678 (14)0.0361 (5)
H15A0.31070.01520.45480.043*
H15B0.17160.09620.41320.043*
C160.2221 (2)0.2060 (3)0.53128 (13)0.0314 (5)
H16A0.27300.14440.57720.038*
H16B0.12320.19600.54000.038*
C170.26526 (19)0.4034 (3)0.52833 (11)0.0220 (4)
H170.35960.41190.55440.026*
C180.1323 (2)0.4742 (4)0.39396 (12)0.0391 (6)
H18A0.13630.46950.33340.059*
H18B0.09940.59060.41040.059*
H18C0.06980.38300.41240.059*
C190.3521 (2)0.4340 (4)0.13685 (12)0.0396 (6)
H19A0.31160.54770.15080.059*
H19B0.28620.33930.14550.059*
H19C0.37610.43490.07860.059*
C200.1723 (2)0.5195 (3)0.57980 (12)0.0261 (4)
H200.07670.50670.55620.031*
C210.2101 (2)0.7153 (3)0.57749 (13)0.0337 (5)
H21A0.15880.77970.61840.051*
H21B0.18760.76270.52200.051*
H21C0.30820.72890.59060.051*
C220.17560 (19)0.4580 (3)0.66901 (11)0.0250 (4)
H220.26250.45010.69740.030*
C230.06861 (19)0.4144 (3)0.71088 (11)0.0257 (4)
H23−0.01760.41470.68130.031*
C240.0705 (2)0.3640 (3)0.80131 (12)0.0247 (4)
H240.16670.37250.82450.030*
C25−0.0184 (2)0.4927 (3)0.85049 (13)0.0304 (5)
H25−0.11560.47670.83030.037*
C26−0.0087 (3)0.4528 (4)0.94378 (13)0.0490 (7)
H26A0.08630.46460.96480.073*
H26B−0.04020.33210.95330.073*
H26C−0.06600.53610.97290.073*
C270.0205 (3)0.6848 (3)0.83604 (15)0.0375 (6)
H27A−0.03530.76190.86940.056*
H27B0.00480.71380.77710.056*
H27C0.11720.70210.85230.056*
C280.0230 (3)0.1728 (3)0.81002 (14)0.0368 (6)
H28A−0.07370.16380.79220.055*
H28B0.03540.13600.86810.055*
H28C0.07690.09610.77530.055*
U11U22U33U12U13U23
O10.0724 (12)0.0452 (11)0.0322 (9)−0.0115 (10)0.0075 (8)−0.0167 (8)
C10.0334 (11)0.0418 (14)0.0261 (11)0.0016 (10)0.0079 (9)0.0050 (9)
C20.0312 (11)0.0556 (16)0.0260 (10)0.0020 (11)0.0083 (9)0.0100 (11)
C30.0304 (11)0.0628 (18)0.0207 (10)0.0059 (11)0.0053 (9)0.0023 (10)
C40.0363 (12)0.0549 (16)0.0222 (10)0.0028 (11)0.0063 (9)−0.0067 (10)
C50.0288 (11)0.0409 (13)0.0191 (9)0.0024 (10)0.0025 (8)−0.0039 (9)
C60.0398 (12)0.0349 (13)0.0251 (11)0.0022 (10)0.0033 (9)−0.0066 (9)
C70.0399 (12)0.0311 (12)0.0268 (10)−0.0042 (10)0.0072 (9)−0.0064 (9)
C80.0255 (10)0.0324 (12)0.0197 (9)−0.0005 (9)0.0023 (8)−0.0034 (8)
C90.0236 (9)0.0301 (11)0.0194 (9)0.0024 (9)0.0020 (7)0.0016 (8)
C100.0247 (10)0.0380 (13)0.0183 (9)0.0041 (9)0.0026 (8)0.0001 (8)
C110.0364 (11)0.0296 (12)0.0249 (10)0.0058 (10)0.0104 (9)0.0054 (9)
C120.0358 (11)0.0239 (11)0.0254 (10)0.0026 (9)0.0111 (9)0.0004 (8)
C130.0221 (9)0.0296 (11)0.0181 (8)0.0023 (8)0.0031 (7)−0.0011 (8)
C140.0246 (10)0.0257 (11)0.0200 (9)−0.0045 (8)0.0037 (7)−0.0020 (8)
C150.0452 (13)0.0335 (13)0.0307 (11)−0.0161 (11)0.0128 (10)−0.0080 (10)
C160.0367 (12)0.0320 (13)0.0262 (10)−0.0097 (10)0.0101 (9)−0.0033 (9)
C170.0211 (9)0.0264 (11)0.0185 (9)−0.0014 (8)0.0024 (7)−0.0010 (8)
C180.0277 (11)0.0665 (18)0.0231 (10)0.0095 (11)0.0013 (8)0.0017 (11)
C190.0307 (11)0.0685 (18)0.0196 (9)0.0104 (12)0.0023 (8)0.0052 (11)
C200.0207 (9)0.0364 (12)0.0214 (9)0.0020 (9)0.0030 (7)−0.0001 (9)
C210.0399 (12)0.0331 (12)0.0292 (11)0.0106 (10)0.0110 (9)0.0005 (9)
C220.0227 (9)0.0316 (12)0.0206 (9)0.0008 (9)0.0012 (7)−0.0043 (8)
C230.0254 (10)0.0306 (11)0.0211 (9)0.0010 (9)0.0009 (8)−0.0015 (8)
C240.0233 (10)0.0306 (12)0.0204 (10)−0.0026 (8)0.0026 (8)−0.0008 (8)
C250.0266 (10)0.0385 (13)0.0266 (10)−0.0015 (9)0.0064 (8)−0.0039 (9)
C260.0652 (16)0.0556 (17)0.0278 (11)−0.0009 (15)0.0192 (11)−0.0005 (12)
C270.0403 (13)0.0354 (13)0.0374 (12)0.0047 (10)0.0066 (10)−0.0054 (10)
C280.0439 (14)0.0339 (13)0.0326 (12)−0.0090 (10)0.0021 (10)0.0014 (10)
O1—C61.216 (3)C15—H15A0.9900
C1—C21.511 (3)C15—H15B0.9900
C1—C101.537 (3)C16—C171.556 (3)
C1—H1A0.9900C16—H16A0.9900
C1—H1B0.9900C16—H16B0.9900
C2—C31.318 (4)C17—C201.539 (3)
C2—H20.9500C17—H171.0000
C3—C41.497 (4)C18—H18A0.9800
C3—H30.9500C18—H18B0.9800
C4—C51.529 (3)C18—H18C0.9800
C4—H4A0.9900C19—H19A0.9800
C4—H4B0.9900C19—H19B0.9800
C5—C61.513 (3)C19—H19C0.9800
C5—C101.559 (3)C20—C221.511 (3)
C5—H51.0000C20—C211.530 (3)
C6—C71.510 (3)C20—H201.0000
C7—C81.532 (3)C21—H21A0.9800
C7—H7A0.9900C21—H21B0.9800
C7—H7B0.9900C21—H21C0.9800
C8—C141.526 (3)C22—C231.318 (3)
C8—C91.537 (3)C22—H220.9500
C8—H81.0000C23—C241.507 (3)
C9—C111.540 (3)C23—H230.9500
C9—C101.558 (2)C24—C281.531 (3)
C9—H91.0000C24—C251.552 (3)
C10—C191.538 (3)C24—H241.0000
C11—C121.543 (3)C25—C271.526 (3)
C11—H11A0.9900C25—C261.533 (3)
C11—H11B0.9900C25—H251.0000
C12—C131.534 (3)C26—H26A0.9800
C12—H12A0.9900C26—H26B0.9800
C12—H12B0.9900C26—H26C0.9800
C13—C181.536 (3)C27—H27A0.9800
C13—C141.539 (3)C27—H27B0.9800
C13—C171.556 (2)C27—H27C0.9800
C14—C151.525 (3)C28—H28A0.9800
C14—H141.0000C28—H28B0.9800
C15—C161.548 (3)C28—H28C0.9800
C2—C1—C10113.2 (2)C16—C15—H15A111.0
C2—C1—H1A108.9C14—C15—H15B111.0
C10—C1—H1A108.9C16—C15—H15B111.0
C2—C1—H1B108.9H15A—C15—H15B109.0
C10—C1—H1B108.9C15—C16—C17106.68 (16)
H1A—C1—H1B107.7C15—C16—H16A110.4
C3—C2—C1123.9 (2)C17—C16—H16A110.4
C3—C2—H2118.0C15—C16—H16B110.4
C1—C2—H2118.0C17—C16—H16B110.4
C2—C3—C4123.5 (2)H16A—C16—H16B108.6
C2—C3—H3118.2C20—C17—C13119.12 (16)
C4—C3—H3118.2C20—C17—C16111.31 (16)
C3—C4—C5111.8 (2)C13—C17—C16104.04 (16)
C3—C4—H4A109.3C20—C17—H17107.3
C5—C4—H4A109.3C13—C17—H17107.3
C3—C4—H4B109.3C16—C17—H17107.3
C5—C4—H4B109.3C13—C18—H18A109.5
H4A—C4—H4B107.9C13—C18—H18B109.5
C6—C5—C4112.09 (19)H18A—C18—H18B109.5
C6—C5—C10111.21 (16)C13—C18—H18C109.5
C4—C5—C10112.96 (19)H18A—C18—H18C109.5
C6—C5—H5106.7H18B—C18—H18C109.5
C4—C5—H5106.7C10—C19—H19A109.5
C10—C5—H5106.7C10—C19—H19B109.5
O1—C6—C7121.3 (2)H19A—C19—H19B109.5
O1—C6—C5123.2 (2)C10—C19—H19C109.5
C7—C6—C5115.59 (18)H19A—C19—H19C109.5
C6—C7—C8112.10 (19)H19B—C19—H19C109.5
C6—C7—H7A109.2C22—C20—C21109.17 (18)
C8—C7—H7A109.2C22—C20—C17110.62 (17)
C6—C7—H7B109.2C21—C20—C17112.97 (17)
C8—C7—H7B109.2C22—C20—H20108.0
H7A—C7—H7B107.9C21—C20—H20108.0
C14—C8—C7110.76 (18)C17—C20—H20108.0
C14—C8—C9109.04 (16)C20—C21—H21A109.5
C7—C8—C9111.18 (16)C20—C21—H21B109.5
C14—C8—H8108.6H21A—C21—H21B109.5
C7—C8—H8108.6C20—C21—H21C109.5
C9—C8—H8108.6H21A—C21—H21C109.5
C8—C9—C11111.22 (15)H21B—C21—H21C109.5
C8—C9—C10113.13 (17)C23—C22—C20125.81 (18)
C11—C9—C10113.82 (17)C23—C22—H22117.1
C8—C9—H9106.0C20—C22—H22117.1
C11—C9—H9106.0C22—C23—C24125.98 (18)
C10—C9—H9106.0C22—C23—H23117.0
C1—C10—C19109.40 (19)C24—C23—H23117.0
C1—C10—C9109.81 (17)C23—C24—C28109.84 (17)
C19—C10—C9112.18 (15)C23—C24—C25110.81 (17)
C1—C10—C5107.53 (16)C28—C24—C25111.51 (17)
C19—C10—C5109.67 (19)C23—C24—H24108.2
C9—C10—C5108.13 (16)C28—C24—H24108.2
C9—C11—C12113.11 (18)C25—C24—H24108.2
C9—C11—H11A109.0C27—C25—C26109.5 (2)
C12—C11—H11A109.0C27—C25—C24111.72 (17)
C9—C11—H11B109.0C26—C25—C24111.6 (2)
C12—C11—H11B109.0C27—C25—H25107.9
H11A—C11—H11B107.8C26—C25—H25107.9
C13—C12—C11112.29 (18)C24—C25—H25107.9
C13—C12—H12A109.1C25—C26—H26A109.5
C11—C12—H12A109.1C25—C26—H26B109.5
C13—C12—H12B109.1H26A—C26—H26B109.5
C11—C12—H12B109.1C25—C26—H26C109.5
H12A—C12—H12B107.9H26A—C26—H26C109.5
C12—C13—C18110.85 (19)H26B—C26—H26C109.5
C12—C13—C14106.36 (15)C25—C27—H27A109.5
C18—C13—C14112.21 (18)C25—C27—H27B109.5
C12—C13—C17116.88 (16)H27A—C27—H27B109.5
C18—C13—C17109.92 (15)C25—C27—H27C109.5
C14—C13—C17100.14 (16)H27A—C27—H27C109.5
C15—C14—C8118.85 (17)H27B—C27—H27C109.5
C15—C14—C13104.80 (16)C24—C28—H28A109.5
C8—C14—C13114.15 (17)C24—C28—H28B109.5
C15—C14—H14106.0H28A—C28—H28B109.5
C8—C14—H14106.0C24—C28—H28C109.5
C13—C14—H14106.0H28A—C28—H28C109.5
C14—C15—C16103.90 (17)H28B—C28—H28C109.5
C14—C15—H15A111.0
C10—C1—C2—C3−16.3 (3)C11—C12—C13—C1455.7 (2)
C1—C2—C3—C4−1.6 (4)C11—C12—C13—C17166.48 (17)
C2—C3—C4—C5−12.2 (3)C7—C8—C14—C15−52.7 (3)
C3—C4—C5—C6170.17 (19)C9—C8—C14—C15−175.30 (18)
C3—C4—C5—C1043.6 (2)C7—C8—C14—C13−177.17 (16)
C4—C5—C6—O1−1.4 (3)C9—C8—C14—C1360.2 (2)
C10—C5—C6—O1126.1 (2)C12—C13—C14—C15167.55 (17)
C4—C5—C6—C7178.9 (2)C18—C13—C14—C15−71.1 (2)
C10—C5—C6—C7−53.6 (2)C17—C13—C14—C1545.47 (18)
O1—C6—C7—C8−129.2 (2)C12—C13—C14—C8−60.7 (2)
C5—C6—C7—C850.5 (3)C18—C13—C14—C860.6 (2)
C6—C7—C8—C14−171.04 (17)C17—C13—C14—C8177.18 (16)
C6—C7—C8—C9−49.7 (2)C8—C14—C15—C16−163.18 (19)
C14—C8—C9—C11−52.8 (2)C13—C14—C15—C16−34.2 (2)
C7—C8—C9—C11−175.21 (17)C14—C15—C16—C179.2 (2)
C14—C8—C9—C10177.62 (16)C12—C13—C17—C2082.5 (2)
C7—C8—C9—C1055.2 (2)C18—C13—C17—C20−44.9 (3)
C2—C1—C10—C19−74.4 (2)C14—C13—C17—C20−163.16 (17)
C2—C1—C10—C9162.09 (17)C12—C13—C17—C16−152.84 (18)
C2—C1—C10—C544.7 (2)C18—C13—C17—C1679.7 (2)
C8—C9—C10—C1−174.10 (17)C14—C13—C17—C16−38.54 (18)
C11—C9—C10—C157.7 (2)C15—C16—C17—C20148.14 (17)
C8—C9—C10—C1964.0 (2)C15—C16—C17—C1318.6 (2)
C11—C9—C10—C19−64.2 (2)C13—C17—C20—C22179.15 (17)
C8—C9—C10—C5−57.0 (2)C16—C17—C20—C2258.1 (2)
C11—C9—C10—C5174.73 (17)C13—C17—C20—C21−58.1 (2)
C6—C5—C10—C1172.97 (17)C16—C17—C20—C21−179.16 (18)
C4—C5—C10—C1−60.0 (2)C21—C20—C22—C23110.1 (2)
C6—C5—C10—C19−68.2 (2)C17—C20—C22—C23−125.0 (2)
C4—C5—C10—C1958.9 (2)C20—C22—C23—C24−175.9 (2)
C6—C5—C10—C954.5 (2)C22—C23—C24—C28−116.4 (2)
C4—C5—C10—C9−178.51 (17)C22—C23—C24—C25119.9 (2)
C8—C9—C11—C1251.5 (2)C23—C24—C25—C27−52.4 (2)
C10—C9—C11—C12−179.31 (17)C28—C24—C25—C27−175.10 (19)
C9—C11—C12—C13−54.1 (2)C23—C24—C25—C26−175.45 (19)
C11—C12—C13—C18−66.5 (2)C28—C24—C25—C2661.9 (2)
D—H···AD—HH···AD···AD—H···A
C1—H1A···O1i0.992.593.574 (3)173
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C1—H1A⋯O1i0.992.593.574 (3)173

Symmetry code: (i) .

  3 in total

1.  A short history of SHELX.

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

2.  (22E,24R)-3α,5-Cyclo-5α-ergosta-22-en-6-one.

Authors:  Liu-Qing Sheng; Fang Zeng; Fei Chen; Chun-Nian Xia
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-01-08

3.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20
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