organic compounds
Mesaconitine
aSchool of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China, and bCollege of Chemistry and Chemical Engineering, Hunan University of Technology, Changsha 410082, People's Republic of China
*Correspondence e-mail: daohanghe@yahoo.com.cn
The title compound, (1α,3α,6α,14α,15α,16β)-3,8,13,14,15-pentahydroxy-1,6,16-trimethoxy-4-methoxymethyl-20-methylaconitan-8,14-diyl 8-acetate 14-benzoate, C33H45NO11, a C19 diterpenoid alkaloid, obtained from the roots of Aconitum kusnezoffii, has been crystallographically characterized in this study. Rings A, B and E have chair conformations, rings C and F display envelope conformations, and ring D adopts a boat conformation. There are inter- and intramolecular O—H⋯O hydrogen bonds, the latter resulting in the formation of a non-planar seven-membered ring. The intermolecular interactions link the molecules into a two-dimensional network.
Related literature
For general background, see: Hikino et al. (1980); Li et al. (1997); Mitamura et al. (2002); Saito et al. (1982); For ring conformation details, see: Codding (1982); De Camp & Pelletier (1977); Parvez et al. (1999); Pelletier et al. (1982). For related literature, see: Pelletier & Djarmati (1976); Tsuda & Marion (1963); Zhapova et al. (1986).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT-Plus (Bruker, 2003); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536808013147/wn2256sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808013147/wn2256Isup2.hkl
The title compound was isolated from the roots of A. kusnezoffii according to the literature procedure of Li et al. (1997) and crystals of X-ray quality were grown from methanol at room temperature by slow evaporation.
The H atom attached to C2 was located and refined freely [C—H = 0.97 (2) Å]. Other H atoms were included in the
at idealized positions and refin ed as riding, with C—H = 0.95 (aromatic), 0.98 (CH2), 1.00 (CH), O—H = 0.84 Å. Uiso(H) = xUeq(carrier atom), where x = 1.5 for O and methyl, 1.2 for all other H atoms. In the absence of significant effects, Friedel pairs were merged. The was assigned on the basis of the related literature (Pelletier & Djarmati, 1976; Tsuda & Marion, 1963; Zhapova et al., 1986).Data collection: SMART (Bruker, 2001); cell
SAINT-Plus (Bruker, 2003); data reduction: SAINT-Plus (Bruker, 2003); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C33H45NO11 | F(000) = 1352 |
Mr = 631.70 | Dx = 1.378 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 6314 reflections |
a = 12.6820 (6) Å | θ = 2.5–26.8° |
b = 15.3848 (7) Å | µ = 0.10 mm−1 |
c = 15.6110 (7) Å | T = 173 K |
V = 3045.9 (2) Å3 | Block, colorless |
Z = 4 | 0.46 × 0.35 × 0.12 mm |
Bruker SMART 1000 CCD diffractometer | 3713 independent reflections |
Radiation source: fine-focus sealed tube | 3026 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.042 |
ω scans | θmax = 27.0°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | h = −16→15 |
Tmin = 0.954, Tmax = 0.988 | k = −16→19 |
18319 measured reflections | l = −16→19 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.038 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.081 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0245P)2 + 1.2755P] where P = (Fo2 + 2Fc2)/3 |
3713 reflections | (Δ/σ)max = 0.001 |
418 parameters | Δρmax = 0.21 e Å−3 |
2 restraints | Δρmin = −0.22 e Å−3 |
C33H45NO11 | V = 3045.9 (2) Å3 |
Mr = 631.70 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 12.6820 (6) Å | µ = 0.10 mm−1 |
b = 15.3848 (7) Å | T = 173 K |
c = 15.6110 (7) Å | 0.46 × 0.35 × 0.12 mm |
Bruker SMART 1000 CCD diffractometer | 3713 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 3026 reflections with I > 2σ(I) |
Tmin = 0.954, Tmax = 0.988 | Rint = 0.042 |
18319 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 2 restraints |
wR(F2) = 0.081 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | Δρmax = 0.21 e Å−3 |
3713 reflections | Δρmin = −0.22 e Å−3 |
418 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 | ||
C1 | −0.0391 (2) | 0.81198 (18) | 0.21029 (19) | 0.0220 (6) | |
H1 | −0.0477 | 0.8647 | 0.1734 | 0.026* | |
C2 | 0.0052 (2) | 0.8377 (2) | 0.3007 (2) | 0.0246 (7) | |
C3 | 0.0859 (2) | 0.76493 (18) | 0.32284 (18) | 0.0218 (6) | |
H3 | 0.0727 | 0.7412 | 0.3815 | 0.026* | |
C4 | 0.1968 (2) | 0.80413 (18) | 0.31663 (18) | 0.0209 (6) | |
C5 | 0.2045 (2) | 0.85444 (18) | 0.23165 (18) | 0.0219 (6) | |
H5 | 0.1701 | 0.9126 | 0.2373 | 0.026* | |
C6 | 0.1544 (2) | 0.80248 (19) | 0.15592 (18) | 0.0220 (6) | |
H6 | 0.1380 | 0.8456 | 0.1099 | 0.026* | |
C7 | 0.0505 (2) | 0.75172 (18) | 0.17449 (18) | 0.0207 (6) | |
C8 | 0.0175 (2) | 0.70445 (19) | 0.09137 (19) | 0.0226 (6) | |
H8 | 0.0235 | 0.7470 | 0.0432 | 0.027* | |
C9 | −0.0936 (2) | 0.6672 (2) | 0.0894 (2) | 0.0256 (7) | |
H9A | −0.1126 | 0.6534 | 0.0294 | 0.031* | |
H9B | −0.0949 | 0.6123 | 0.1225 | 0.031* | |
C10 | −0.1744 (2) | 0.72861 (19) | 0.12591 (19) | 0.0241 (6) | |
H10 | −0.1762 | 0.7807 | 0.0877 | 0.029* | |
C11 | −0.1439 (2) | 0.76086 (19) | 0.21596 (19) | 0.0236 (6) | |
C12 | −0.1281 (2) | 0.68527 (19) | 0.2794 (2) | 0.0254 (7) | |
H12A | −0.1312 | 0.7082 | 0.3386 | 0.030* | |
H12B | −0.1866 | 0.6432 | 0.2724 | 0.030* | |
C13 | 0.0663 (2) | 0.69431 (18) | 0.25371 (18) | 0.0226 (6) | |
H13 | 0.1306 | 0.6574 | 0.2466 | 0.027* | |
C14 | 0.2486 (2) | 0.7463 (2) | 0.1230 (2) | 0.0275 (7) | |
H14A | 0.2335 | 0.6837 | 0.1313 | 0.033* | |
H14B | 0.2606 | 0.7570 | 0.0612 | 0.033* | |
C15 | 0.3455 (2) | 0.7728 (2) | 0.17473 (18) | 0.0247 (6) | |
C16 | 0.3180 (2) | 0.86471 (19) | 0.20170 (19) | 0.0242 (6) | |
H16 | 0.3214 | 0.9048 | 0.1513 | 0.029* | |
C17 | 0.3584 (2) | 0.71420 (19) | 0.25396 (19) | 0.0253 (7) | |
H17 | 0.3397 | 0.6533 | 0.2376 | 0.030* | |
C18 | 0.2910 (2) | 0.74092 (19) | 0.33247 (18) | 0.0240 (6) | |
H18 | 0.3398 | 0.7717 | 0.3726 | 0.029* | |
C19 | 0.3869 (2) | 0.97097 (19) | 0.3007 (2) | 0.0257 (7) | |
C20 | 0.4690 (2) | 0.98015 (19) | 0.3682 (2) | 0.0250 (6) | |
C21 | 0.5301 (3) | 0.9093 (2) | 0.3930 (2) | 0.0299 (7) | |
H21 | 0.5187 | 0.8540 | 0.3677 | 0.036* | |
C22 | 0.6072 (3) | 0.9198 (2) | 0.4544 (2) | 0.0356 (8) | |
H22 | 0.6489 | 0.8715 | 0.4713 | 0.043* | |
C23 | 0.6240 (3) | 0.9998 (2) | 0.4915 (2) | 0.0365 (8) | |
H23 | 0.6767 | 1.0065 | 0.5342 | 0.044* | |
C24 | 0.5643 (3) | 1.0702 (2) | 0.4664 (2) | 0.0401 (9) | |
H24 | 0.5768 | 1.1255 | 0.4914 | 0.048* | |
C25 | 0.4865 (3) | 1.0608 (2) | 0.4053 (2) | 0.0362 (8) | |
H25 | 0.4451 | 1.1094 | 0.3887 | 0.043* | |
C26 | 0.2065 (2) | 0.8593 (2) | 0.46489 (19) | 0.0284 (7) | |
C27 | 0.2139 (3) | 0.9414 (2) | 0.5150 (2) | 0.0452 (9) | |
H27A | 0.1483 | 0.9745 | 0.5086 | 0.068* | |
H27B | 0.2731 | 0.9762 | 0.4937 | 0.068* | |
H27C | 0.2251 | 0.9277 | 0.5756 | 0.068* | |
C28 | −0.0892 (3) | 0.9341 (3) | 0.3905 (3) | 0.0584 (12) | |
H28A | −0.0235 | 0.9626 | 0.4079 | 0.088* | |
H28B | −0.1399 | 0.9362 | 0.4378 | 0.088* | |
H28C | −0.1187 | 0.9641 | 0.3406 | 0.088* | |
C29 | 0.1046 (3) | 0.6183 (2) | −0.0140 (2) | 0.0339 (8) | |
H29A | 0.0383 | 0.5980 | −0.0393 | 0.051* | |
H29B | 0.1589 | 0.5735 | −0.0212 | 0.051* | |
H29C | 0.1272 | 0.6718 | −0.0427 | 0.051* | |
C30 | −0.0119 (3) | 0.5751 (2) | 0.3337 (2) | 0.0311 (7) | |
H30A | 0.0555 | 0.5451 | 0.3248 | 0.047* | |
H30B | −0.0696 | 0.5328 | 0.3315 | 0.047* | |
H30C | −0.0115 | 0.6038 | 0.3897 | 0.047* | |
C31 | −0.2345 (2) | 0.81935 (19) | 0.2462 (2) | 0.0284 (7) | |
H31A | −0.3027 | 0.7887 | 0.2400 | 0.034* | |
H31B | −0.2249 | 0.8348 | 0.3073 | 0.034* | |
C32 | −0.3153 (3) | 0.9539 (2) | 0.2150 (2) | 0.0399 (8) | |
H32A | −0.3834 | 0.9252 | 0.2058 | 0.060* | |
H32B | −0.3104 | 1.0054 | 0.1783 | 0.060* | |
H32C | −0.3092 | 0.9714 | 0.2751 | 0.060* | |
C33 | 0.5015 (3) | 0.6510 (2) | 0.3335 (2) | 0.0445 (9) | |
H33A | 0.4696 | 0.6603 | 0.3899 | 0.067* | |
H33B | 0.5785 | 0.6529 | 0.3386 | 0.067* | |
H33C | 0.4800 | 0.5941 | 0.3113 | 0.067* | |
N1 | −0.02662 (19) | 0.63950 (15) | 0.26699 (16) | 0.0239 (5) | |
O1 | 0.20493 (15) | 0.87584 (12) | 0.38022 (12) | 0.0241 (4) | |
O2 | 0.2048 (2) | 0.78785 (15) | 0.49642 (14) | 0.0402 (6) | |
O3 | 0.08940 (16) | 0.63488 (13) | 0.07442 (13) | 0.0263 (5) | |
O4 | −0.27732 (15) | 0.68993 (14) | 0.12299 (15) | 0.0316 (5) | |
H4 | −0.2766 | 0.6427 | 0.1499 | 0.047* | |
O5 | −0.23341 (17) | 0.89599 (14) | 0.19455 (15) | 0.0349 (6) | |
O6 | −0.06838 (16) | 0.84649 (14) | 0.36913 (14) | 0.0328 (5) | |
O7 | 0.43716 (15) | 0.76827 (15) | 0.12268 (13) | 0.0309 (5) | |
H7 | 0.4897 | 0.7566 | 0.1534 | 0.046* | |
O8 | 0.46752 (16) | 0.71676 (14) | 0.27663 (14) | 0.0305 (5) | |
O9 | 0.39220 (15) | 0.89139 (13) | 0.26615 (14) | 0.0257 (5) | |
O10 | 0.25977 (17) | 0.66318 (13) | 0.37478 (14) | 0.0290 (5) | |
H10A | 0.2344 | 0.6755 | 0.4230 | 0.044* | |
O11 | 0.32507 (17) | 1.02599 (13) | 0.27820 (16) | 0.0349 (5) | |
H2 | 0.037 (2) | 0.8949 (9) | 0.297 (2) | 0.042* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0223 (14) | 0.0175 (14) | 0.0261 (15) | −0.0007 (12) | 0.0000 (12) | 0.0027 (12) |
C2 | 0.0242 (15) | 0.0225 (15) | 0.0272 (16) | −0.0032 (12) | 0.0023 (13) | −0.0019 (13) |
C3 | 0.0241 (14) | 0.0210 (14) | 0.0204 (14) | −0.0024 (12) | 0.0003 (12) | 0.0007 (12) |
C4 | 0.0231 (14) | 0.0190 (14) | 0.0207 (14) | −0.0019 (12) | −0.0004 (12) | −0.0012 (12) |
C5 | 0.0216 (14) | 0.0180 (14) | 0.0261 (15) | −0.0037 (12) | −0.0013 (12) | 0.0012 (12) |
C6 | 0.0224 (14) | 0.0220 (15) | 0.0215 (15) | −0.0024 (12) | −0.0015 (12) | 0.0018 (12) |
C7 | 0.0203 (14) | 0.0180 (14) | 0.0239 (15) | −0.0014 (11) | −0.0029 (12) | −0.0007 (12) |
C8 | 0.0251 (15) | 0.0201 (15) | 0.0227 (14) | 0.0031 (12) | −0.0018 (12) | 0.0023 (12) |
C9 | 0.0263 (15) | 0.0254 (16) | 0.0251 (16) | −0.0045 (13) | −0.0068 (13) | −0.0003 (13) |
C10 | 0.0192 (14) | 0.0249 (15) | 0.0283 (15) | −0.0032 (12) | −0.0032 (12) | 0.0052 (13) |
C11 | 0.0217 (14) | 0.0211 (15) | 0.0281 (15) | −0.0004 (12) | −0.0001 (12) | 0.0029 (13) |
C12 | 0.0231 (14) | 0.0248 (15) | 0.0282 (16) | −0.0053 (12) | −0.0001 (13) | 0.0023 (13) |
C13 | 0.0218 (14) | 0.0198 (14) | 0.0263 (16) | −0.0016 (12) | −0.0013 (12) | 0.0010 (13) |
C14 | 0.0273 (15) | 0.0290 (16) | 0.0263 (15) | −0.0029 (14) | 0.0031 (13) | −0.0012 (13) |
C15 | 0.0242 (14) | 0.0255 (15) | 0.0243 (15) | −0.0033 (13) | 0.0022 (12) | 0.0001 (13) |
C16 | 0.0244 (15) | 0.0248 (15) | 0.0235 (15) | −0.0030 (13) | −0.0028 (12) | 0.0058 (12) |
C17 | 0.0230 (15) | 0.0217 (15) | 0.0311 (16) | −0.0013 (12) | 0.0002 (13) | −0.0003 (13) |
C18 | 0.0259 (15) | 0.0225 (15) | 0.0237 (15) | −0.0018 (13) | 0.0000 (13) | 0.0021 (12) |
C19 | 0.0233 (15) | 0.0203 (15) | 0.0337 (18) | −0.0055 (13) | 0.0016 (13) | 0.0034 (13) |
C20 | 0.0217 (14) | 0.0266 (15) | 0.0267 (16) | −0.0045 (13) | 0.0035 (13) | 0.0004 (13) |
C21 | 0.0336 (17) | 0.0256 (16) | 0.0307 (18) | −0.0019 (14) | −0.0003 (14) | 0.0026 (14) |
C22 | 0.0373 (18) | 0.0350 (19) | 0.0343 (19) | 0.0011 (16) | −0.0072 (15) | 0.0090 (16) |
C23 | 0.0339 (18) | 0.047 (2) | 0.0284 (18) | −0.0087 (16) | −0.0056 (15) | 0.0040 (16) |
C24 | 0.0358 (19) | 0.036 (2) | 0.049 (2) | −0.0075 (16) | −0.0028 (17) | −0.0144 (17) |
C25 | 0.0302 (17) | 0.0269 (17) | 0.051 (2) | 0.0008 (14) | −0.0034 (16) | −0.0027 (16) |
C26 | 0.0288 (16) | 0.0304 (18) | 0.0260 (16) | −0.0039 (14) | 0.0002 (14) | −0.0031 (14) |
C27 | 0.064 (3) | 0.035 (2) | 0.036 (2) | −0.0062 (19) | −0.0018 (19) | −0.0077 (16) |
C28 | 0.043 (2) | 0.050 (2) | 0.082 (3) | −0.0042 (19) | 0.019 (2) | −0.034 (2) |
C29 | 0.0347 (17) | 0.0335 (18) | 0.0335 (18) | 0.0068 (15) | 0.0028 (15) | −0.0042 (15) |
C30 | 0.0338 (17) | 0.0234 (16) | 0.0362 (18) | −0.0041 (14) | −0.0038 (15) | 0.0080 (14) |
C31 | 0.0241 (15) | 0.0279 (16) | 0.0332 (17) | −0.0026 (13) | 0.0009 (13) | 0.0014 (14) |
C32 | 0.041 (2) | 0.0364 (19) | 0.043 (2) | 0.0109 (16) | 0.0066 (17) | 0.0022 (17) |
C33 | 0.0345 (19) | 0.045 (2) | 0.054 (2) | 0.0089 (17) | −0.0026 (17) | 0.0134 (19) |
N1 | 0.0250 (13) | 0.0197 (12) | 0.0269 (13) | −0.0043 (11) | −0.0018 (11) | 0.0047 (11) |
O1 | 0.0270 (10) | 0.0215 (10) | 0.0238 (11) | −0.0029 (9) | −0.0012 (9) | −0.0031 (9) |
O2 | 0.0527 (15) | 0.0367 (14) | 0.0313 (12) | −0.0038 (12) | 0.0017 (11) | 0.0005 (11) |
O3 | 0.0290 (11) | 0.0230 (11) | 0.0270 (11) | 0.0031 (9) | −0.0036 (9) | −0.0029 (9) |
O4 | 0.0239 (11) | 0.0305 (12) | 0.0405 (13) | −0.0063 (9) | −0.0056 (10) | 0.0057 (11) |
O5 | 0.0348 (12) | 0.0273 (12) | 0.0424 (14) | 0.0098 (10) | 0.0107 (11) | 0.0074 (10) |
O6 | 0.0293 (11) | 0.0338 (12) | 0.0354 (12) | −0.0005 (10) | 0.0084 (10) | −0.0081 (11) |
O7 | 0.0232 (10) | 0.0401 (13) | 0.0293 (11) | −0.0012 (10) | 0.0048 (9) | 0.0014 (11) |
O8 | 0.0248 (11) | 0.0300 (12) | 0.0367 (12) | 0.0019 (9) | 0.0003 (10) | 0.0067 (10) |
O9 | 0.0231 (10) | 0.0224 (10) | 0.0318 (12) | −0.0035 (9) | −0.0030 (9) | 0.0003 (9) |
O10 | 0.0326 (11) | 0.0249 (11) | 0.0297 (12) | −0.0004 (9) | 0.0023 (10) | 0.0080 (10) |
O11 | 0.0287 (12) | 0.0229 (11) | 0.0532 (15) | 0.0023 (10) | −0.0106 (11) | 0.0011 (11) |
C1—C11 | 1.547 (4) | C18—O10 | 1.422 (3) |
C1—C7 | 1.570 (4) | C18—H18 | 1.0000 |
C1—C2 | 1.570 (4) | C19—O11 | 1.206 (3) |
C1—H1 | 1.0000 | C19—O9 | 1.339 (3) |
C2—O6 | 1.424 (4) | C19—C20 | 1.489 (4) |
C2—C3 | 1.556 (4) | C20—C25 | 1.387 (4) |
C2—H2 | 0.970 (16) | C20—C21 | 1.391 (4) |
C3—C4 | 1.533 (4) | C21—C22 | 1.379 (4) |
C3—C13 | 1.551 (4) | C21—H21 | 0.9500 |
C3—H3 | 1.0000 | C22—C23 | 1.376 (5) |
C4—O1 | 1.488 (3) | C22—H22 | 0.9500 |
C4—C5 | 1.539 (4) | C23—C24 | 1.377 (5) |
C4—C18 | 1.560 (4) | C23—H23 | 0.9500 |
C5—C16 | 1.522 (4) | C24—C25 | 1.380 (5) |
C5—C6 | 1.562 (4) | C24—H24 | 0.9500 |
C5—H5 | 1.0000 | C25—H25 | 0.9500 |
C6—C7 | 1.559 (4) | C26—O2 | 1.204 (4) |
C6—C14 | 1.561 (4) | C26—O1 | 1.346 (4) |
C6—H6 | 1.0000 | C26—C27 | 1.490 (4) |
C7—C13 | 1.533 (4) | C27—H27A | 0.9800 |
C7—C8 | 1.545 (4) | C27—H27B | 0.9800 |
C8—O3 | 1.431 (3) | C27—H27C | 0.9800 |
C8—C9 | 1.521 (4) | C28—O6 | 1.413 (4) |
C8—H8 | 1.0000 | C28—H28A | 0.9800 |
C9—C10 | 1.506 (4) | C28—H28B | 0.9800 |
C9—H9A | 0.9900 | C28—H28C | 0.9800 |
C9—H9B | 0.9900 | C29—O3 | 1.417 (4) |
C10—O4 | 1.435 (3) | C29—H29A | 0.9800 |
C10—C11 | 1.540 (4) | C29—H29B | 0.9800 |
C10—H10 | 1.0000 | C29—H29C | 0.9800 |
C11—C31 | 1.534 (4) | C30—N1 | 1.449 (4) |
C11—C12 | 1.540 (4) | C30—H30A | 0.9800 |
C12—N1 | 1.480 (4) | C30—H30B | 0.9800 |
C12—H12A | 0.9900 | C30—H30C | 0.9800 |
C12—H12B | 0.9900 | C31—O5 | 1.429 (4) |
C13—N1 | 1.464 (4) | C31—H31A | 0.9900 |
C13—H13 | 1.0000 | C31—H31B | 0.9900 |
C14—C15 | 1.526 (4) | C32—O5 | 1.405 (4) |
C14—H14A | 0.9900 | C32—H32A | 0.9800 |
C14—H14B | 0.9900 | C32—H32B | 0.9800 |
C15—O7 | 1.420 (3) | C32—H32C | 0.9800 |
C15—C16 | 1.516 (4) | C33—O8 | 1.413 (4) |
C15—C17 | 1.539 (4) | C33—H33A | 0.9800 |
C16—O9 | 1.437 (3) | C33—H33B | 0.9800 |
C16—H16 | 1.0000 | C33—H33C | 0.9800 |
C17—O8 | 1.429 (3) | O4—H4 | 0.8400 |
C17—C18 | 1.550 (4) | O7—H7 | 0.8400 |
C17—H17 | 1.0000 | O10—H10A | 0.8400 |
C11—C1—C7 | 110.0 (2) | O9—C16—H16 | 110.3 |
C11—C1—C2 | 112.6 (2) | C15—C16—H16 | 110.3 |
C7—C1—C2 | 102.1 (2) | C5—C16—H16 | 110.3 |
C11—C1—H1 | 110.6 | O8—C17—C15 | 106.6 (2) |
C7—C1—H1 | 110.6 | O8—C17—C18 | 109.3 (2) |
C2—C1—H1 | 110.6 | C15—C17—C18 | 114.9 (2) |
O6—C2—C3 | 109.5 (2) | O8—C17—H17 | 108.6 |
O6—C2—C1 | 117.6 (2) | C15—C17—H17 | 108.6 |
C3—C2—C1 | 104.7 (2) | C18—C17—H17 | 108.6 |
O6—C2—H2 | 104 (2) | O10—C18—C17 | 107.3 (2) |
C3—C2—H2 | 113 (2) | O10—C18—C4 | 112.6 (2) |
C1—C2—H2 | 109 (2) | C17—C18—C4 | 117.6 (2) |
C4—C3—C13 | 112.2 (2) | O10—C18—H18 | 106.2 |
C4—C3—C2 | 107.8 (2) | C17—C18—H18 | 106.2 |
C13—C3—C2 | 104.1 (2) | C4—C18—H18 | 106.2 |
C4—C3—H3 | 110.8 | O11—C19—O9 | 123.9 (3) |
C13—C3—H3 | 110.8 | O11—C19—C20 | 126.5 (3) |
C2—C3—H3 | 110.8 | O9—C19—C20 | 109.7 (2) |
O1—C4—C3 | 108.3 (2) | C25—C20—C21 | 119.7 (3) |
O1—C4—C5 | 101.4 (2) | C25—C20—C19 | 119.5 (3) |
C3—C4—C5 | 108.1 (2) | C21—C20—C19 | 120.8 (3) |
O1—C4—C18 | 107.7 (2) | C22—C21—C20 | 119.7 (3) |
C3—C4—C18 | 116.6 (2) | C22—C21—H21 | 120.1 |
C5—C4—C18 | 113.7 (2) | C20—C21—H21 | 120.1 |
C16—C5—C4 | 112.2 (2) | C23—C22—C21 | 120.5 (3) |
C16—C5—C6 | 101.9 (2) | C23—C22—H22 | 119.8 |
C4—C5—C6 | 111.7 (2) | C21—C22—H22 | 119.8 |
C16—C5—H5 | 110.3 | C22—C23—C24 | 119.9 (3) |
C4—C5—H5 | 110.3 | C22—C23—H23 | 120.1 |
C6—C5—H5 | 110.3 | C24—C23—H23 | 120.1 |
C7—C6—C14 | 115.5 (2) | C23—C24—C25 | 120.4 (3) |
C7—C6—C5 | 117.3 (2) | C23—C24—H24 | 119.8 |
C14—C6—C5 | 102.8 (2) | C25—C24—H24 | 119.8 |
C7—C6—H6 | 106.8 | C24—C25—C20 | 119.8 (3) |
C14—C6—H6 | 106.8 | C24—C25—H25 | 120.1 |
C5—C6—H6 | 106.8 | C20—C25—H25 | 120.1 |
C13—C7—C8 | 116.2 (2) | O2—C26—O1 | 125.0 (3) |
C13—C7—C6 | 109.1 (2) | O2—C26—C27 | 124.1 (3) |
C8—C7—C6 | 108.0 (2) | O1—C26—C27 | 110.8 (3) |
C13—C7—C1 | 98.5 (2) | C26—C27—H27A | 109.5 |
C8—C7—C1 | 112.4 (2) | C26—C27—H27B | 109.5 |
C6—C7—C1 | 112.5 (2) | H27A—C27—H27B | 109.5 |
O3—C8—C9 | 107.7 (2) | C26—C27—H27C | 109.5 |
O3—C8—C7 | 109.5 (2) | H27A—C27—H27C | 109.5 |
C9—C8—C7 | 116.4 (2) | H27B—C27—H27C | 109.5 |
O3—C8—H8 | 107.6 | O6—C28—H28A | 109.5 |
C9—C8—H8 | 107.6 | O6—C28—H28B | 109.5 |
C7—C8—H8 | 107.6 | H28A—C28—H28B | 109.5 |
C10—C9—C8 | 112.7 (2) | O6—C28—H28C | 109.5 |
C10—C9—H9A | 109.0 | H28A—C28—H28C | 109.5 |
C8—C9—H9A | 109.0 | H28B—C28—H28C | 109.5 |
C10—C9—H9B | 109.0 | O3—C29—H29A | 109.5 |
C8—C9—H9B | 109.0 | O3—C29—H29B | 109.5 |
H9A—C9—H9B | 107.8 | H29A—C29—H29B | 109.5 |
O4—C10—C9 | 110.3 (2) | O3—C29—H29C | 109.5 |
O4—C10—C11 | 113.0 (2) | H29A—C29—H29C | 109.5 |
C9—C10—C11 | 112.1 (2) | H29B—C29—H29C | 109.5 |
O4—C10—H10 | 107.0 | N1—C30—H30A | 109.5 |
C9—C10—H10 | 107.0 | N1—C30—H30B | 109.5 |
C11—C10—H10 | 107.0 | H30A—C30—H30B | 109.5 |
C31—C11—C10 | 106.4 (2) | N1—C30—H30C | 109.5 |
C31—C11—C12 | 110.0 (2) | H30A—C30—H30C | 109.5 |
C10—C11—C12 | 112.1 (2) | H30B—C30—H30C | 109.5 |
C31—C11—C1 | 111.3 (2) | O5—C31—C11 | 107.6 (2) |
C10—C11—C1 | 109.1 (2) | O5—C31—H31A | 110.2 |
C12—C11—C1 | 108.0 (2) | C11—C31—H31A | 110.2 |
N1—C12—C11 | 112.9 (2) | O5—C31—H31B | 110.2 |
N1—C12—H12A | 109.0 | C11—C31—H31B | 110.2 |
C11—C12—H12A | 109.0 | H31A—C31—H31B | 108.5 |
N1—C12—H12B | 109.0 | O5—C32—H32A | 109.5 |
C11—C12—H12B | 109.0 | O5—C32—H32B | 109.5 |
H12A—C12—H12B | 107.8 | H32A—C32—H32B | 109.5 |
N1—C13—C7 | 109.9 (2) | O5—C32—H32C | 109.5 |
N1—C13—C3 | 115.7 (2) | H32A—C32—H32C | 109.5 |
C7—C13—C3 | 100.3 (2) | H32B—C32—H32C | 109.5 |
N1—C13—H13 | 110.2 | O8—C33—H33A | 109.5 |
C7—C13—H13 | 110.2 | O8—C33—H33B | 109.5 |
C3—C13—H13 | 110.2 | H33A—C33—H33B | 109.5 |
C15—C14—C6 | 107.1 (2) | O8—C33—H33C | 109.5 |
C15—C14—H14A | 110.3 | H33A—C33—H33C | 109.5 |
C6—C14—H14A | 110.3 | H33B—C33—H33C | 109.5 |
C15—C14—H14B | 110.3 | C30—N1—C13 | 113.1 (2) |
C6—C14—H14B | 110.3 | C30—N1—C12 | 110.1 (2) |
H14A—C14—H14B | 108.5 | C13—N1—C12 | 116.4 (2) |
O7—C15—C16 | 113.1 (2) | C26—O1—C4 | 121.0 (2) |
O7—C15—C14 | 110.1 (2) | C29—O3—C8 | 113.7 (2) |
C16—C15—C14 | 102.2 (2) | C10—O4—H4 | 109.5 |
O7—C15—C17 | 110.1 (2) | C32—O5—C31 | 112.8 (2) |
C16—C15—C17 | 110.4 (2) | C28—O6—C2 | 112.9 (3) |
C14—C15—C17 | 110.8 (2) | C15—O7—H7 | 109.5 |
O9—C16—C15 | 108.1 (2) | C33—O8—C17 | 115.5 (2) |
O9—C16—C5 | 115.7 (2) | C19—O9—C16 | 120.7 (2) |
C15—C16—C5 | 101.9 (2) | C18—O10—H10A | 109.5 |
C11—C1—C2—O6 | −26.0 (4) | C2—C3—C13—C7 | 40.7 (3) |
C7—C1—C2—O6 | −143.9 (2) | C7—C6—C14—C15 | −133.1 (2) |
C11—C1—C2—C3 | 95.8 (3) | C5—C6—C14—C15 | −4.0 (3) |
C7—C1—C2—C3 | −22.2 (3) | C6—C14—C15—O7 | −145.6 (2) |
O6—C2—C3—C4 | −124.5 (2) | C6—C14—C15—C16 | −25.2 (3) |
C1—C2—C3—C4 | 108.5 (2) | C6—C14—C15—C17 | 92.4 (3) |
O6—C2—C3—C13 | 116.1 (2) | O7—C15—C16—O9 | −73.8 (3) |
C1—C2—C3—C13 | −10.9 (3) | C14—C15—C16—O9 | 167.8 (2) |
C13—C3—C4—O1 | 175.3 (2) | C17—C15—C16—O9 | 50.0 (3) |
C2—C3—C4—O1 | 61.2 (3) | O7—C15—C16—C5 | 163.8 (2) |
C13—C3—C4—C5 | 66.2 (3) | C14—C15—C16—C5 | 45.5 (3) |
C2—C3—C4—C5 | −47.9 (3) | C17—C15—C16—C5 | −72.4 (3) |
C13—C3—C4—C18 | −63.2 (3) | C4—C5—C16—O9 | −45.8 (3) |
C2—C3—C4—C18 | −177.4 (2) | C6—C5—C16—O9 | −165.3 (2) |
O1—C4—C5—C16 | 89.2 (3) | C4—C5—C16—C15 | 71.2 (3) |
C3—C4—C5—C16 | −157.1 (2) | C6—C5—C16—C15 | −48.4 (3) |
C18—C4—C5—C16 | −26.0 (3) | O7—C15—C17—O8 | 33.8 (3) |
O1—C4—C5—C6 | −157.2 (2) | C16—C15—C17—O8 | −91.8 (3) |
C3—C4—C5—C6 | −43.5 (3) | C14—C15—C17—O8 | 155.8 (2) |
C18—C4—C5—C6 | 87.6 (3) | O7—C15—C17—C18 | 155.1 (2) |
C16—C5—C6—C7 | 159.5 (2) | C16—C15—C17—C18 | 29.5 (3) |
C4—C5—C6—C7 | 39.7 (3) | C14—C15—C17—C18 | −82.9 (3) |
C16—C5—C6—C14 | 31.6 (3) | O8—C17—C18—O10 | −95.0 (3) |
C4—C5—C6—C14 | −88.3 (3) | C15—C17—C18—O10 | 145.2 (2) |
C14—C6—C7—C13 | 69.8 (3) | O8—C17—C18—C4 | 136.9 (3) |
C5—C6—C7—C13 | −51.7 (3) | C15—C17—C18—C4 | 17.0 (4) |
C14—C6—C7—C8 | −57.4 (3) | O1—C4—C18—O10 | 104.2 (3) |
C5—C6—C7—C8 | −178.9 (2) | C3—C4—C18—O10 | −17.5 (3) |
C14—C6—C7—C1 | 178.0 (2) | C5—C4—C18—O10 | −144.3 (2) |
C5—C6—C7—C1 | 56.5 (3) | O1—C4—C18—C17 | −130.2 (2) |
C11—C1—C7—C13 | −72.6 (3) | C3—C4—C18—C17 | 108.0 (3) |
C2—C1—C7—C13 | 47.1 (2) | C5—C4—C18—C17 | −18.7 (3) |
C11—C1—C7—C8 | 50.4 (3) | O11—C19—C20—C25 | −6.9 (5) |
C2—C1—C7—C8 | 170.1 (2) | O9—C19—C20—C25 | 172.2 (3) |
C11—C1—C7—C6 | 172.5 (2) | O11—C19—C20—C21 | 174.7 (3) |
C2—C1—C7—C6 | −67.8 (3) | O9—C19—C20—C21 | −6.2 (4) |
C13—C7—C8—O3 | −52.6 (3) | C25—C20—C21—C22 | 0.2 (5) |
C6—C7—C8—O3 | 70.3 (3) | C19—C20—C21—C22 | 178.6 (3) |
C1—C7—C8—O3 | −165.0 (2) | C20—C21—C22—C23 | 0.1 (5) |
C13—C7—C8—C9 | 69.9 (3) | C21—C22—C23—C24 | −0.7 (5) |
C6—C7—C8—C9 | −167.2 (2) | C22—C23—C24—C25 | 0.9 (5) |
C1—C7—C8—C9 | −42.5 (3) | C23—C24—C25—C20 | −0.6 (5) |
O3—C8—C9—C10 | 166.8 (2) | C21—C20—C25—C24 | 0.0 (5) |
C7—C8—C9—C10 | 43.4 (3) | C19—C20—C25—C24 | −178.4 (3) |
C8—C9—C10—O4 | −179.6 (2) | C10—C11—C31—O5 | −68.7 (3) |
C8—C9—C10—C11 | −52.7 (3) | C12—C11—C31—O5 | 169.7 (2) |
O4—C10—C11—C31 | −52.4 (3) | C1—C11—C31—O5 | 50.1 (3) |
C9—C10—C11—C31 | −177.8 (2) | C7—C13—N1—C30 | 172.1 (2) |
O4—C10—C11—C12 | 67.9 (3) | C3—C13—N1—C30 | −75.2 (3) |
C9—C10—C11—C12 | −57.5 (3) | C7—C13—N1—C12 | −59.0 (3) |
O4—C10—C11—C1 | −172.6 (2) | C3—C13—N1—C12 | 53.7 (3) |
C9—C10—C11—C1 | 62.0 (3) | C11—C12—N1—C30 | 174.3 (2) |
C7—C1—C11—C31 | −177.0 (2) | C11—C12—N1—C13 | 44.0 (3) |
C2—C1—C11—C31 | 69.9 (3) | O2—C26—O1—C4 | 2.3 (5) |
C7—C1—C11—C10 | −59.9 (3) | C27—C26—O1—C4 | −179.4 (3) |
C2—C1—C11—C10 | −173.0 (2) | C3—C4—O1—C26 | 69.5 (3) |
C7—C1—C11—C12 | 62.2 (3) | C5—C4—O1—C26 | −176.9 (2) |
C2—C1—C11—C12 | −51.0 (3) | C18—C4—O1—C26 | −57.3 (3) |
C31—C11—C12—N1 | −165.4 (2) | C9—C8—O3—C29 | 84.5 (3) |
C10—C11—C12—N1 | 76.4 (3) | C7—C8—O3—C29 | −148.0 (2) |
C1—C11—C12—N1 | −43.8 (3) | C11—C31—O5—C32 | 178.3 (3) |
C8—C7—C13—N1 | −51.9 (3) | C3—C2—O6—C28 | 136.2 (3) |
C6—C7—C13—N1 | −174.2 (2) | C1—C2—O6—C28 | −104.5 (3) |
C1—C7—C13—N1 | 68.3 (3) | C15—C17—O8—C33 | −164.5 (3) |
C8—C7—C13—C3 | −174.2 (2) | C18—C17—O8—C33 | 70.7 (3) |
C6—C7—C13—C3 | 63.4 (3) | O11—C19—O9—C16 | −3.7 (4) |
C1—C7—C13—C3 | −54.0 (2) | C20—C19—O9—C16 | 177.3 (2) |
C4—C3—C13—N1 | 166.2 (2) | C15—C16—O9—C19 | 179.1 (2) |
C2—C3—C13—N1 | −77.4 (3) | C5—C16—O9—C19 | −67.5 (3) |
C4—C3—C13—C7 | −75.7 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O10—H10A···O2 | 0.84 | 2.11 | 2.788 (3) | 138 |
O7—H7···O8 | 0.84 | 2.04 | 2.560 (3) | 120 |
O4—H4···O11i | 0.84 | 2.20 | 3.018 (3) | 163 |
Symmetry code: (i) −x, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C33H45NO11 |
Mr | 631.70 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 173 |
a, b, c (Å) | 12.6820 (6), 15.3848 (7), 15.6110 (7) |
V (Å3) | 3045.9 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.46 × 0.35 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART 1000 CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2003) |
Tmin, Tmax | 0.954, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 18319, 3713, 3026 |
Rint | 0.042 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.081, 1.07 |
No. of reflections | 3713 |
No. of parameters | 418 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.21, −0.22 |
Computer programs: SMART (Bruker, 2001), SAINT-Plus (Bruker, 2003), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O10—H10A···O2 | 0.84 | 2.11 | 2.788 (3) | 138 |
O7—H7···O8 | 0.84 | 2.04 | 2.560 (3) | 120 |
O4—H4···O11i | 0.84 | 2.20 | 3.018 (3) | 163 |
Symmetry code: (i) −x, y−1/2, −z+1/2. |
Acknowledgements
The authors thank Guangdong Provincial Natural Science Foundation of China (No. 04300531) for financial assistance.
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As an important Chinese herbal medicine belonging to the genus Aconitum, A. kusnzoffii has been therapeutically used to treat rheumatic pain, paralysis due to stroke, rheumatoid arthritis and some other inflammations. Mesaconitine, a C19 diterpenoid alkaloid, is pharmacologically one of the most active components obtained from the roots of A. kusnezoffii (Li et al., 1997). Mesaconitine has been reported to have an anti-inflammatory activity (Hikino et al.,1980; Saito et al., 1982), and the vasorelaxant effect of mesaconitine may contribute to the therapeutical effectiveness on persons with a weak constitution and poor metabolism, by improving peripheral blood circulation (Mitamura et al., 2002). The three-dimensional structure of most biologically active molecules plays a role in governing their interactions and activities. It is important to obtain information on the mode of action and selectivity of mesaconitine so that it can be used safely and efficiently. Many X-ray crystal structure determinations of C19 diterpenoid alkaloids have been reported, such as pseudaconitine, delphinine (Parvez et al., 1999; Pelletier et al., 1982.). However, the crystal structure of mesaconitine has not been reported. In view of this, the crystal structure determination of the title compound was carried out and the results are presented here.
The structure of mesaconitine is similar to that of aconitine (Codding, 1982). The only difference between aconitine and mesaconitine is a methylene group at the tertiary nitrogen atom. The bond lengths and angles in the title compound are in good agreement with expected values. In the molecule of the title compound, (Fig. 1), rings A, B and E have a chair conformation, rings C and F display an envelope conformation, ring D adopts a boat conformation. The packing of the title compound is shown in Fig. 2. In the crystal structure, there are inter- and intramolecular O—H···O hydrogen bonds. The former link the molecules into a two-dimensional network, while the latter results in the formation of a non-planar seven-membered ring. These intramolecular hydrogen bonds may be effective in the stabilization of the structure.