organic compounds
4,5-Bis(4-fluorophenyl)-5-hydroxy-3-(2-methylpropanoyl)-1-phenylpyrrolidin-2-one
aDepartment of Applied Chemistry, Zhejiang Gongshang University, Hangzhou 310035, People's Republic of China, and bDepartment of Chemistry, Zaozhuang University, Shandong, People's Republic of China
*Correspondence e-mail: huangjy@mail.zjgsu.edu.cn
The title compound, C26H23F2NO3, was synthesized by the reaction of 2-(4-fluorobenzylidene)-4-methyl-3-oxo-N-phenylpentanamide and 4-fluorobenzaldehyde. The dihedral angles between the mean plane through the pyrrolidine ring (nearly planar; maximum deviation of 0.145 Å for the C atom bearing the hydroxy group) with the phenyl and benzene rings are 37.22 (7), 51.88 (7) and 87.64 (9)°, respectively. The pyyolidine ring is near coplaner, with max offset of 0.145 A for C19 atom.\uff09 In the crystal, molecules are linked by pairs of O—H⋯O hydrogen bonds into inversion dimers, which are further assembled into chains parallel to the b axis by weak C—H⋯O hydrogen bonds.
Related literature
The title compound is an impurity in the preparation of an intermediate in the synthesis of atorvastatin {systematic name [R-(R*,R*)]-2-(4-fluorophenyl)-ρ,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrole-1-heptenoic acid}, see: Baumann et al. (1992); Sagyam et al. (2007). For the use of atorvastatin as a hypolipidemic and hypocholesterolemic agent, see: Lea & McTavish, (1997). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2005); cell SAINT (Bruker, 2005); 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: SHELXL97.
Supporting information
10.1107/S1600536811008786/rz2536sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811008786/rz2536Isup2.hkl
A mixture of 2-(4-fluorobenzylidene)-4-methyl-3-oxo-N-phenylpentanamide (5.10 g, 16.4 mmol), ethyl hydroxyethylmethyl thiazolium bromide (0.60 g, 2.38 mmol), 4-fluorobenzaldehyde (2.16 g, 17.4 mmol) and triethylamine (1.20 g, 11.9 mmol) was heated with stirring to 338 K. The reaction mixture was allowed to stand for 24 h at this temperature. Then 2-propanol (6.0 ml) was added and the mixture was heated to about 373 K. Deionized water (6.0 ml) was dropwise added to the reaction mixture over 30 min while maintaining the temperature at 338 K. After it was gradually cooled to 273 K, a white solid was isolated on a filter and washed with 2-propanol. The solid was recrystallized from ethyl acetate/hexane (1:1 v/v) and dried under vacuum at 323 K to give the title product as a white solid (2.28 g, yield 32%). Colourless crystals were obtained by vapor diffusion of pentane into an acetone solution over a period of 5 d.
The hydroxy H atom was found in a difference Fourier map and refined using a riding model, with the O—H = 0.84 Å and with Uiso(H) = 1.5 Ueq(O). All other H atoms were placed in geometrically calculated position and refined using a riding model, with C—H = 0.95–1.00 Å and Uiso(H) = 1.2 Ueq(C) or 1.5 Ueq(C) for methyl H atoms.
Data collection: SMART (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); 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: SHELXL97 (Sheldrick, 2008).Fig. 1. ORTEP view of the title compound. Dispalcement ellipsoids are drawn at 30% probability level. |
C26H23F2NO3 | F(000) = 1824 |
Mr = 435.45 | Dx = 1.325 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 10716 reflections |
a = 24.506 (4) Å | θ = 2.0–25.6° |
b = 10.2180 (15) Å | µ = 0.10 mm−1 |
c = 20.554 (3) Å | T = 153 K |
β = 121.963 (2)° | Prism, colourless |
V = 4366.5 (11) Å3 | 0.15 × 0.15 × 0.10 mm |
Z = 8 |
Bruker SMART CCD diffractometer | 4091 independent reflections |
Radiation source: fine-focus sealed tube | 2471 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.033 |
ϕ and ω scans | θmax = 25.6°, θmin = 2.0° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −29→20 |
Tmin = 0.986, Tmax = 0.990 | k = −12→12 |
10716 measured reflections | l = −21→25 |
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)] = 0.039 | H-atom parameters constrained |
wR(F2) = 0.103 | w = 1/[σ2(Fo2) + (0.0294P)2 + 3.1716P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max < 0.001 |
4091 reflections | Δρmax = 0.15 e Å−3 |
293 parameters | Δρmin = −0.18 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.00069 (13) |
C26H23F2NO3 | V = 4366.5 (11) Å3 |
Mr = 435.45 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 24.506 (4) Å | µ = 0.10 mm−1 |
b = 10.2180 (15) Å | T = 153 K |
c = 20.554 (3) Å | 0.15 × 0.15 × 0.10 mm |
β = 121.963 (2)° |
Bruker SMART CCD diffractometer | 4091 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2471 reflections with I > 2σ(I) |
Tmin = 0.986, Tmax = 0.990 | Rint = 0.033 |
10716 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 0 restraints |
wR(F2) = 0.103 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.15 e Å−3 |
4091 reflections | Δρmin = −0.18 e Å−3 |
293 parameters |
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 | ||
F1 | 0.29729 (8) | 0.50006 (17) | 0.53453 (10) | 0.0981 (6) | |
F2 | 0.42759 (8) | 0.66971 (13) | 0.21676 (8) | 0.0818 (5) | |
O1 | 0.48023 (6) | −0.09701 (13) | 0.40993 (8) | 0.0442 (4) | |
O2 | 0.50669 (6) | 0.28658 (13) | 0.48691 (7) | 0.0412 (4) | |
H2 | 0.5080 | 0.2276 | 0.5162 | 0.062* | |
O3 | 0.32087 (8) | 0.03185 (16) | 0.26703 (10) | 0.0698 (5) | |
N1 | 0.49052 (7) | 0.12325 (15) | 0.39667 (9) | 0.0350 (4) | |
C1 | 0.37194 (9) | 0.2815 (2) | 0.43135 (12) | 0.0413 (5) | |
C2 | 0.35015 (11) | 0.4082 (2) | 0.40746 (14) | 0.0562 (6) | |
H2A | 0.3519 | 0.4446 | 0.3661 | 0.067* | |
C3 | 0.36879 (12) | 0.2328 (2) | 0.49159 (13) | 0.0608 (7) | |
H3 | 0.3842 | 0.1469 | 0.5097 | 0.073* | |
C4 | 0.32592 (12) | 0.4824 (2) | 0.44287 (16) | 0.0670 (7) | |
H4 | 0.3120 | 0.5698 | 0.4269 | 0.080* | |
C5 | 0.32242 (12) | 0.4286 (3) | 0.50057 (15) | 0.0653 (7) | |
C6 | 0.34365 (13) | 0.3059 (3) | 0.52658 (15) | 0.0721 (8) | |
H6 | 0.3414 | 0.2708 | 0.5679 | 0.086* | |
C7 | 0.46243 (9) | 0.35844 (19) | 0.35938 (11) | 0.0361 (5) | |
C8 | 0.43194 (10) | 0.3401 (2) | 0.28104 (12) | 0.0473 (6) | |
H8 | 0.4186 | 0.2547 | 0.2602 | 0.057* | |
C9 | 0.48343 (10) | 0.48238 (19) | 0.38900 (12) | 0.0443 (5) | |
H9 | 0.5059 | 0.4958 | 0.4429 | 0.053* | |
C10 | 0.47203 (12) | 0.5871 (2) | 0.34077 (13) | 0.0530 (6) | |
H10 | 0.4862 | 0.6725 | 0.3610 | 0.064* | |
C11 | 0.42063 (12) | 0.4446 (2) | 0.23262 (13) | 0.0555 (6) | |
H11 | 0.3997 | 0.4323 | 0.1788 | 0.067* | |
C12 | 0.44041 (12) | 0.5657 (2) | 0.26446 (13) | 0.0530 (6) | |
C13 | 0.54700 (9) | 0.11424 (19) | 0.39270 (11) | 0.0377 (5) | |
C14 | 0.55081 (11) | 0.0173 (2) | 0.34826 (12) | 0.0503 (6) | |
H14 | 0.5164 | −0.0429 | 0.3213 | 0.060* | |
C15 | 0.59694 (10) | 0.2022 (2) | 0.43122 (13) | 0.0512 (6) | |
H15 | 0.5948 | 0.2695 | 0.4617 | 0.061* | |
C16 | 0.60423 (12) | 0.0077 (3) | 0.34296 (14) | 0.0604 (7) | |
H16 | 0.6066 | −0.0597 | 0.3127 | 0.072* | |
C17 | 0.65415 (12) | 0.0945 (3) | 0.38100 (15) | 0.0653 (7) | |
H17 | 0.6909 | 0.0879 | 0.3770 | 0.078* | |
C18 | 0.65041 (11) | 0.1906 (3) | 0.42466 (15) | 0.0659 (7) | |
H18 | 0.6850 | 0.2507 | 0.4511 | 0.079* | |
C19 | 0.46645 (9) | 0.24691 (18) | 0.41043 (11) | 0.0357 (5) | |
C20 | 0.39741 (9) | 0.20473 (18) | 0.39012 (11) | 0.0370 (5) | |
H20 | 0.3676 | 0.2227 | 0.3342 | 0.044* | |
C21 | 0.40032 (9) | 0.05602 (18) | 0.39926 (11) | 0.0361 (5) | |
H21 | 0.4023 | 0.0310 | 0.4475 | 0.043* | |
C22 | 0.46109 (9) | 0.01616 (19) | 0.40310 (10) | 0.0348 (5) | |
C23 | 0.34501 (10) | −0.0155 (2) | 0.33026 (13) | 0.0440 (5) | |
C24 | 0.32304 (11) | −0.1444 (2) | 0.34376 (15) | 0.0612 (7) | |
H24 | 0.3593 | −0.1843 | 0.3917 | 0.073* | |
C25 | 0.30332 (16) | −0.2382 (3) | 0.27765 (19) | 0.1080 (12) | |
H25A | 0.2696 | −0.1979 | 0.2298 | 0.162* | |
H25B | 0.2870 | −0.3193 | 0.2866 | 0.162* | |
H25C | 0.3407 | −0.2579 | 0.2738 | 0.162* | |
C26 | 0.26836 (15) | −0.1156 (4) | 0.3559 (2) | 0.1135 (13) | |
H26C | 0.2831 | −0.0539 | 0.3985 | 0.170* | |
H26B | 0.2544 | −0.1971 | 0.3680 | 0.170* | |
H26A | 0.2323 | −0.0772 | 0.3091 | 0.170* |
U11 | U22 | U33 | U12 | U13 | U23 | |
F1 | 0.0963 (12) | 0.1070 (13) | 0.1038 (12) | 0.0287 (10) | 0.0616 (11) | −0.0280 (10) |
F2 | 0.1209 (13) | 0.0551 (9) | 0.0778 (10) | 0.0180 (8) | 0.0583 (10) | 0.0305 (8) |
O1 | 0.0472 (9) | 0.0305 (8) | 0.0572 (9) | 0.0039 (7) | 0.0291 (8) | 0.0038 (7) |
O2 | 0.0471 (8) | 0.0362 (8) | 0.0350 (8) | −0.0071 (7) | 0.0183 (7) | −0.0017 (6) |
O3 | 0.0736 (12) | 0.0648 (11) | 0.0495 (10) | −0.0192 (9) | 0.0180 (9) | −0.0024 (9) |
N1 | 0.0328 (9) | 0.0298 (9) | 0.0419 (10) | 0.0008 (7) | 0.0195 (8) | 0.0006 (7) |
C1 | 0.0320 (11) | 0.0418 (12) | 0.0455 (12) | 0.0033 (9) | 0.0174 (10) | −0.0048 (10) |
C2 | 0.0540 (15) | 0.0462 (14) | 0.0736 (16) | 0.0108 (11) | 0.0374 (14) | 0.0034 (12) |
C3 | 0.0721 (17) | 0.0615 (16) | 0.0571 (15) | 0.0233 (13) | 0.0398 (14) | 0.0070 (12) |
C4 | 0.0627 (17) | 0.0484 (15) | 0.092 (2) | 0.0155 (12) | 0.0419 (16) | −0.0056 (14) |
C5 | 0.0519 (16) | 0.0776 (19) | 0.0657 (17) | 0.0131 (14) | 0.0307 (14) | −0.0216 (15) |
C6 | 0.0793 (19) | 0.086 (2) | 0.0597 (16) | 0.0261 (16) | 0.0425 (15) | 0.0023 (15) |
C7 | 0.0393 (11) | 0.0329 (11) | 0.0389 (11) | 0.0028 (9) | 0.0226 (10) | 0.0010 (9) |
C8 | 0.0578 (14) | 0.0382 (12) | 0.0428 (13) | −0.0006 (10) | 0.0246 (11) | −0.0028 (10) |
C9 | 0.0580 (14) | 0.0356 (12) | 0.0413 (12) | −0.0037 (10) | 0.0277 (11) | −0.0017 (10) |
C10 | 0.0792 (17) | 0.0305 (12) | 0.0596 (15) | −0.0012 (11) | 0.0438 (14) | 0.0004 (11) |
C11 | 0.0697 (17) | 0.0540 (15) | 0.0412 (13) | 0.0036 (12) | 0.0282 (12) | 0.0054 (11) |
C12 | 0.0720 (17) | 0.0404 (13) | 0.0577 (15) | 0.0123 (12) | 0.0420 (14) | 0.0161 (12) |
C13 | 0.0331 (11) | 0.0377 (11) | 0.0409 (12) | 0.0032 (9) | 0.0187 (10) | 0.0055 (9) |
C14 | 0.0523 (14) | 0.0516 (14) | 0.0537 (14) | −0.0020 (11) | 0.0327 (12) | −0.0017 (11) |
C15 | 0.0390 (13) | 0.0498 (14) | 0.0614 (14) | −0.0043 (11) | 0.0243 (11) | −0.0029 (11) |
C16 | 0.0642 (17) | 0.0649 (16) | 0.0687 (16) | 0.0097 (14) | 0.0465 (14) | 0.0043 (13) |
C17 | 0.0474 (16) | 0.081 (2) | 0.0783 (18) | 0.0121 (14) | 0.0407 (15) | 0.0148 (15) |
C18 | 0.0391 (14) | 0.0732 (18) | 0.0823 (18) | −0.0084 (12) | 0.0300 (14) | 0.0022 (15) |
C19 | 0.0372 (11) | 0.0321 (11) | 0.0353 (11) | 0.0002 (9) | 0.0176 (9) | −0.0027 (9) |
C20 | 0.0356 (11) | 0.0334 (11) | 0.0391 (11) | 0.0022 (9) | 0.0178 (9) | 0.0007 (9) |
C21 | 0.0364 (11) | 0.0343 (11) | 0.0382 (11) | −0.0016 (9) | 0.0202 (10) | −0.0005 (9) |
C22 | 0.0351 (11) | 0.0316 (11) | 0.0344 (11) | −0.0004 (9) | 0.0161 (9) | −0.0009 (9) |
C23 | 0.0347 (12) | 0.0431 (13) | 0.0516 (14) | −0.0005 (10) | 0.0210 (11) | −0.0016 (11) |
C24 | 0.0427 (14) | 0.0458 (14) | 0.0762 (17) | −0.0102 (11) | 0.0186 (13) | 0.0069 (13) |
C25 | 0.095 (2) | 0.0598 (19) | 0.122 (3) | −0.0212 (17) | 0.025 (2) | −0.0242 (19) |
C26 | 0.081 (2) | 0.118 (3) | 0.168 (3) | −0.005 (2) | 0.083 (3) | 0.035 (3) |
F1—C5 | 1.362 (3) | C11—C12 | 1.363 (3) |
F2—C12 | 1.365 (2) | C11—H11 | 0.9500 |
O1—C22 | 1.228 (2) | C13—C15 | 1.381 (3) |
O2—C19 | 1.402 (2) | C13—C14 | 1.384 (3) |
O2—H2 | 0.8400 | C14—C16 | 1.373 (3) |
O3—C23 | 1.208 (2) | C14—H14 | 0.9500 |
N1—C22 | 1.355 (2) | C15—C18 | 1.392 (3) |
N1—C13 | 1.432 (2) | C15—H15 | 0.9500 |
N1—C19 | 1.484 (2) | C16—C17 | 1.372 (3) |
C1—C3 | 1.374 (3) | C16—H16 | 0.9500 |
C1—C2 | 1.387 (3) | C17—C18 | 1.366 (3) |
C1—C20 | 1.511 (3) | C17—H17 | 0.9500 |
C2—C4 | 1.384 (3) | C18—H18 | 0.9500 |
C2—H2A | 0.9500 | C19—C20 | 1.573 (3) |
C3—C6 | 1.387 (3) | C20—C21 | 1.528 (3) |
C3—H3 | 0.9500 | C20—H20 | 1.0000 |
C4—C5 | 1.351 (3) | C21—C22 | 1.505 (3) |
C4—H4 | 0.9500 | C21—C23 | 1.532 (3) |
C5—C6 | 1.354 (4) | C21—H21 | 1.0000 |
C6—H6 | 0.9500 | C23—C24 | 1.504 (3) |
C7—C9 | 1.381 (3) | C24—C26 | 1.516 (4) |
C7—C8 | 1.383 (3) | C24—C25 | 1.517 (4) |
C7—C19 | 1.517 (3) | C24—H24 | 1.0000 |
C8—C11 | 1.384 (3) | C25—H25A | 0.9800 |
C8—H8 | 0.9500 | C25—H25B | 0.9800 |
C9—C10 | 1.383 (3) | C25—H25C | 0.9800 |
C9—H9 | 0.9500 | C26—H26C | 0.9800 |
C10—C12 | 1.350 (3) | C26—H26B | 0.9800 |
C10—H10 | 0.9500 | C26—H26A | 0.9800 |
C19—O2—H2 | 109.5 | C17—C16—H16 | 119.7 |
C22—N1—C13 | 122.29 (16) | C14—C16—H16 | 119.7 |
C22—N1—C19 | 112.54 (15) | C18—C17—C16 | 119.3 (2) |
C13—N1—C19 | 124.01 (15) | C18—C17—H17 | 120.3 |
C3—C1—C2 | 117.6 (2) | C16—C17—H17 | 120.3 |
C3—C1—C20 | 123.64 (19) | C17—C18—C15 | 121.3 (2) |
C2—C1—C20 | 118.81 (19) | C17—C18—H18 | 119.4 |
C4—C2—C1 | 121.2 (2) | C15—C18—H18 | 119.4 |
C4—C2—H2A | 119.4 | O2—C19—N1 | 110.20 (15) |
C1—C2—H2A | 119.4 | O2—C19—C7 | 107.93 (15) |
C1—C3—C6 | 121.6 (2) | N1—C19—C7 | 113.26 (15) |
C1—C3—H3 | 119.2 | O2—C19—C20 | 113.32 (15) |
C6—C3—H3 | 119.2 | N1—C19—C20 | 101.33 (14) |
C5—C4—C2 | 118.9 (2) | C7—C19—C20 | 110.82 (16) |
C5—C4—H4 | 120.6 | C1—C20—C21 | 116.98 (16) |
C2—C4—H4 | 120.6 | C1—C20—C19 | 114.49 (16) |
C4—C5—C6 | 122.3 (2) | C21—C20—C19 | 105.44 (15) |
C4—C5—F1 | 119.2 (3) | C1—C20—H20 | 106.4 |
C6—C5—F1 | 118.5 (3) | C21—C20—H20 | 106.4 |
C5—C6—C3 | 118.5 (2) | C19—C20—H20 | 106.4 |
C5—C6—H6 | 120.7 | C22—C21—C20 | 104.83 (15) |
C3—C6—H6 | 120.7 | C22—C21—C23 | 106.58 (15) |
C9—C7—C8 | 118.89 (18) | C20—C21—C23 | 113.56 (16) |
C9—C7—C19 | 120.76 (17) | C22—C21—H21 | 110.5 |
C8—C7—C19 | 120.06 (17) | C20—C21—H21 | 110.5 |
C7—C8—C11 | 120.8 (2) | C23—C21—H21 | 110.5 |
C7—C8—H8 | 119.6 | O1—C22—N1 | 125.51 (18) |
C11—C8—H8 | 119.6 | O1—C22—C21 | 124.65 (17) |
C7—C9—C10 | 120.45 (19) | N1—C22—C21 | 109.84 (16) |
C7—C9—H9 | 119.8 | O3—C23—C24 | 122.0 (2) |
C10—C9—H9 | 119.8 | O3—C23—C21 | 119.63 (19) |
C12—C10—C9 | 118.8 (2) | C24—C23—C21 | 118.35 (19) |
C12—C10—H10 | 120.6 | C23—C24—C26 | 107.1 (2) |
C9—C10—H10 | 120.6 | C23—C24—C25 | 111.3 (2) |
C12—C11—C8 | 118.0 (2) | C26—C24—C25 | 112.3 (2) |
C12—C11—H11 | 121.0 | C23—C24—H24 | 108.7 |
C8—C11—H11 | 121.0 | C26—C24—H24 | 108.7 |
C10—C12—C11 | 123.0 (2) | C25—C24—H24 | 108.7 |
C10—C12—F2 | 118.7 (2) | C24—C25—H25A | 109.5 |
C11—C12—F2 | 118.3 (2) | C24—C25—H25B | 109.5 |
C15—C13—C14 | 119.70 (19) | H25A—C25—H25B | 109.5 |
C15—C13—N1 | 121.04 (18) | C24—C25—H25C | 109.5 |
C14—C13—N1 | 119.25 (18) | H25A—C25—H25C | 109.5 |
C16—C14—C13 | 120.3 (2) | H25B—C25—H25C | 109.5 |
C16—C14—H14 | 119.9 | C24—C26—H26C | 109.5 |
C13—C14—H14 | 119.9 | C24—C26—H26B | 109.5 |
C13—C15—C18 | 118.9 (2) | H26C—C26—H26B | 109.5 |
C13—C15—H15 | 120.5 | C24—C26—H26A | 109.5 |
C18—C15—H15 | 120.5 | H26C—C26—H26A | 109.5 |
C17—C16—C14 | 120.5 (2) | H26B—C26—H26A | 109.5 |
C3—C1—C2—C4 | −0.2 (3) | C13—N1—C19—C20 | 167.56 (16) |
C20—C1—C2—C4 | 179.5 (2) | C9—C7—C19—O2 | −13.9 (2) |
C2—C1—C3—C6 | 1.2 (4) | C8—C7—C19—O2 | 172.30 (17) |
C20—C1—C3—C6 | −178.5 (2) | C9—C7—C19—N1 | −136.22 (19) |
C1—C2—C4—C5 | −1.4 (4) | C8—C7—C19—N1 | 50.0 (2) |
C2—C4—C5—C6 | 2.1 (4) | C9—C7—C19—C20 | 110.7 (2) |
C2—C4—C5—F1 | −178.5 (2) | C8—C7—C19—C20 | −63.1 (2) |
C4—C5—C6—C3 | −1.1 (4) | C3—C1—C20—C21 | 19.1 (3) |
F1—C5—C6—C3 | 179.5 (2) | C2—C1—C20—C21 | −160.69 (19) |
C1—C3—C6—C5 | −0.6 (4) | C3—C1—C20—C19 | −105.0 (2) |
C9—C7—C8—C11 | −2.1 (3) | C2—C1—C20—C19 | 75.2 (2) |
C19—C7—C8—C11 | 171.8 (2) | O2—C19—C20—C1 | 34.5 (2) |
C8—C7—C9—C10 | 2.3 (3) | N1—C19—C20—C1 | 152.52 (15) |
C19—C7—C9—C10 | −171.51 (19) | C7—C19—C20—C1 | −87.0 (2) |
C7—C9—C10—C12 | −0.4 (3) | O2—C19—C20—C21 | −95.51 (18) |
C7—C8—C11—C12 | 0.0 (3) | N1—C19—C20—C21 | 22.51 (18) |
C9—C10—C12—C11 | −1.9 (4) | C7—C19—C20—C21 | 142.99 (15) |
C9—C10—C12—F2 | 178.2 (2) | C1—C20—C21—C22 | −142.77 (17) |
C8—C11—C12—C10 | 2.1 (4) | C19—C20—C21—C22 | −14.23 (19) |
C8—C11—C12—F2 | −178.0 (2) | C1—C20—C21—C23 | 101.3 (2) |
C22—N1—C13—C15 | −139.4 (2) | C19—C20—C21—C23 | −130.18 (17) |
C19—N1—C13—C15 | 27.3 (3) | C13—N1—C22—O1 | 3.7 (3) |
C22—N1—C13—C14 | 41.9 (3) | C19—N1—C22—O1 | −164.41 (18) |
C19—N1—C13—C14 | −151.38 (18) | C13—N1—C22—C21 | −175.28 (16) |
C15—C13—C14—C16 | 0.6 (3) | C19—N1—C22—C21 | 16.6 (2) |
N1—C13—C14—C16 | 179.30 (19) | C20—C21—C22—O1 | −179.48 (18) |
C14—C13—C15—C18 | −0.3 (3) | C23—C21—C22—O1 | −58.8 (2) |
N1—C13—C15—C18 | −179.03 (19) | C20—C21—C22—N1 | −0.5 (2) |
C13—C14—C16—C17 | −0.6 (3) | C23—C21—C22—N1 | 120.22 (17) |
C14—C16—C17—C18 | 0.3 (4) | C22—C21—C23—O3 | −85.3 (2) |
C16—C17—C18—C15 | −0.1 (4) | C20—C21—C23—O3 | 29.6 (3) |
C13—C15—C18—C17 | 0.1 (4) | C22—C21—C23—C24 | 94.0 (2) |
C22—N1—C19—O2 | 95.72 (18) | C20—C21—C23—C24 | −151.10 (19) |
C13—N1—C19—O2 | −72.2 (2) | O3—C23—C24—C26 | −88.0 (3) |
C22—N1—C19—C7 | −143.26 (17) | C21—C23—C24—C26 | 92.8 (3) |
C13—N1—C19—C7 | 48.8 (2) | O3—C23—C24—C25 | 35.2 (3) |
C22—N1—C19—C20 | −24.53 (19) | C21—C23—C24—C25 | −144.1 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10···O1i | 0.95 | 2.59 | 3.489 (3) | 157 |
O2—H2···O1ii | 0.84 | 1.93 | 2.7625 (18) | 174 |
Symmetry codes: (i) x, y+1, z; (ii) −x+1, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C26H23F2NO3 |
Mr | 435.45 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 153 |
a, b, c (Å) | 24.506 (4), 10.2180 (15), 20.554 (3) |
β (°) | 121.963 (2) |
V (Å3) | 4366.5 (11) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.15 × 0.15 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.986, 0.990 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10716, 4091, 2471 |
Rint | 0.033 |
(sin θ/λ)max (Å−1) | 0.608 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.103, 1.02 |
No. of reflections | 4091 |
No. of parameters | 293 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.15, −0.18 |
Computer programs: SMART (Bruker, 2005), SAINT (Bruker, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10···O1i | 0.95 | 2.59 | 3.489 (3) | 157 |
O2—H2···O1ii | 0.84 | 1.93 | 2.7625 (18) | 174 |
Symmetry codes: (i) x, y+1, z; (ii) −x+1, −y, −z+1. |
Acknowledgements
This work was supported by the Education Department of Zhejiang Province (No. Y200906515) and Zhejiang Gong Shang University (No. X-106).
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans 2, pp. S1–19. CrossRef Web of Science Google Scholar
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Atorvastatin, {[R-(R*,R*)]-2-(4-fluorophenyl)-ρ,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrole-1-heptenoic acid}, is a selective and competitive inhibitor of the enzyme hydroxyl-methylglutaryl coenzyme-A reductase (HMG-CoA-R), which plays a key role in the biosynthesis of cholesterol. By virtue of that activity atorvastatin is useful as a hypolipidemic and hypocholesterolemic agent (Lea & McTavish, 1997). The synthesis of atorvastatin is carried out via the critical intermediate 2-[2-(4-fluorophenyl)-2-oxo-1-phenylethyl]-4-methyl-3-oxo-pentanoic acid phenylamide (Sagyam et al., 20077; Baumann et al., 1992). The process for preparing this intermediate is particularly sensitive and vulnerable to the formation of some impurities which may cause product rejection and decreased yields. We report here the crystal structure of one of these impurities.
In the title compound (Fig. 1) bond lengths and angles are within normal ranges (Allen et al., 1987). The five atoms of the pyrrolidine ring are not coplanar, with deviations from the planarity ranging from -0.124 (2) to 0.163 (2) Å. The dihedral angles between the mean plane through the pyrrolidine ring with the C13–C18 phenyl ring and the C1–C6, C7–C12 benzene rings are 37.22 (7), 51.88 (7)° and 87.64 (9)°, respectively. In the crystal structure, the molecules are linked by intermolecular O—H···O hydrogen bonds into dinuclear units (Table 1). The dinuclear units are further assembled into one–dimensional chains along the [010] direction by C–H···O hydrogen bonds.