organic compounds
Talatisamine, a C19-diterpenoid alkaloid from Chinese traditional herbal `Chuanwu'
aInstitute of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang 621000, People's Republic of China
*Correspondence e-mail: wangxq193@126.com
The title compound [systematic name: (1S,4S,5R,7S,8S,9R,10R,11S,13S,14S,16S,17R)-N-methyl-8,14-dihydroxy-1,16-trimethoxy-4-(methoxymethylene)aconitane], C24H39NO5, was isolated from the roots of Aconitum carmichaelii Debx., which is known as `Chuanwu' in Chinese traditional herbal medicine. The molecule has an aconitane carbon skeleton with four six-membered rings and two five-membered rings, including a six-membered N-containing heterocyclic ring. Both five-membered rings adopt envelope conformations. The four six-membered adopt chair conformations. Two intramolecular O—H⋯O hydrogen bonds occur.
Related literature
The title compound is an aconitine-type C19-diterpenoid alkaloid. For reviews of diterpenoid see: Wang et al. (2009, 2010). For the chemical structure of the title compound established from NMR and MS data, see: Pelletier et al. (1984). For the total synthesis of the title compound, see: Wiesner et al. (1974). For structures of related C19-diterpenoid see: Gao et al. (2010); Tashkhodjaev & Sultankhodjaev (2009); He et al. (2008). For the of aconitine-type C19-diterpenoid see: Pelletier & Djarmati (1976); Tsuda & Marion (1963); Zhapova et al. (1986).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell CrysAlis CCD; data reduction: CrysAlis RED (Oxford Diffraction, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536811044242/xu5344sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811044242/xu5344Isup2.hkl
The title compound was isolated from the roots of Aconitum carmichaeli Debx. according to the literature procedure of Gao et al. (2010) and crystals of X-ray quality were grown from MeOH at room temperature by slow evaporation.
Hydroxy H atoms were located in a difference Fourier map and refined as riding in their as-found relative positions with Uiso(H) = 1.5Ueq(O). Other H atoms were located geometrically with C—H = 0.93–0.98 Å, and refined using a riding model with Uiso(H) = 1.5Ueq(C) for methyl and 1.2Ueq(C) for the others. The
has not been determined from the X-ray analysis, owing to the absence of strong anomalous scattering.As a famous Chinese traditional herbal, the roots of Aconitum carmichaeli Debx., known as "Chuanwu", has been therapeutically used to the treatment of rheumatic pain, rheumatoid arthritis and some other inflammations. Recently, two important reviews focus on the β,14β-dihydroxy-1α,16β-trimethoxy-4β-(methoxymethylene)aconitane, talatisamine, has been isolated previously from many genus of AconitumL., inculding A. carmichaeli Debx. (Pelletier et al., 1984), and its structure was established from the NMR and MS data (Wiesner et al., 1974). However, in our recent investigation, it was isolation from the root of Aconitum carmichaeli Debx. collected in the Jiangyou country, Sichuan Province of China in June, 2011. The of talatisamine has not been reported. In view of this, the determination of the title compound was carried out and the result is presented here.
from the genus Aconitum (Wang et al., 2009 and 2010). The title compound, N-methyl-8The molecular structure of the title compound is shown in Fig. 1. The molecule has a high rigid structure consisting of six main rings (A–F). Six-membered rings A (C1/C2/C3/C4/C5/C11), B (C7/C8/C9/C10/C11/C17) and D(C8/C9/C14/C13/C16/C15) adopt chair conformations; six-membered heterocyclicring E (C4/C5/C11/C17/N1/C19) adopts the same chair conformation. The five-membered rings C (C9/C10/C12/C13/C14) and F (C5/C6/C7/C17/C11) display anenvelope conformation, in which, the C14 and C11 act as the "envelope atom" respectively. Two
-fused ring junctions are observed between rings A/E and between B/C. Two trans-fused ring junctions involve rings A/B and also E/F. The contains intermolecular O—H···O hydrogen bond between the hydroxyl group and carbonyl O atom. The of the title compound can not be confirmed by the present MoKa diffraction data. But it can be assumed to be the same as that reported for C19-diterpenoidalkaloids from the nature (Gao et al., 2010; Tashkhodjaev & Sultankhodjaev, 2009; He et al.., 2008; Pelletier & Djarmati, 1976; Tsuda & Marion, 1963; Zhapova et al., 1986).The title compound is an aconitine-type C19-diterpenoid alkaloid. For reviews of diterpenoid
see: Wang et al. (2009, 2010). For the chemical structure of the title compound established from NMR and MS data, see: Pelletier et al. (1984). For the total synthesis of the title compound, see: Wiesner et al. (1974). For structures of related C19-diterpenoid see: Gao et al. (2010); Tashkhodjaev & Sultankhodjaev (2009); He et al. (2008). For the of aconitine-type C19-diterpenoid see: Pelletier & Djarmati (1976); Tsuda & Marion (1963); Zhapova et al. (1986).Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell
CrysAlis CCD (Oxford Diffraction, 2009); data reduction: CrysAlis RED (Oxford Diffraction, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound with the atom numbering, showing displacement ellipsoids at the 30% probability level. | |
Fig. 2. Molecular packing of the title compound. |
C24H39NO5 | F(000) = 920 |
Mr = 421.56 | Dx = 1.263 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.7107 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 2165 reflections |
a = 9.7124 (4) Å | θ = 2.9–29.1° |
b = 13.9401 (7) Å | µ = 0.09 mm−1 |
c = 16.3729 (8) Å | T = 293 K |
V = 2216.77 (17) Å3 | Block, colourless |
Z = 4 | 0.40 × 0.40 × 0.35 mm |
Oxford Diffraction Xcalibur Eos diffractometer | 2068 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.026 |
Graphite monochromator | θmax = 26.4°, θmin = 2.9° |
Detector resolution: 16.0874 pixels mm-1 | h = −11→12 |
ω scans | k = −17→16 |
6644 measured reflections | l = −16→20 |
2572 independent reflections |
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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0403P)2 + 0.3082P] where P = (Fo2 + 2Fc2)/3 |
2572 reflections | (Δ/σ)max < 0.001 |
277 parameters | Δρmax = 0.15 e Å−3 |
0 restraints | Δρmin = −0.15 e Å−3 |
C24H39NO5 | V = 2216.77 (17) Å3 |
Mr = 421.56 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 9.7124 (4) Å | µ = 0.09 mm−1 |
b = 13.9401 (7) Å | T = 293 K |
c = 16.3729 (8) Å | 0.40 × 0.40 × 0.35 mm |
Oxford Diffraction Xcalibur Eos diffractometer | 2068 reflections with I > 2σ(I) |
6644 measured reflections | Rint = 0.026 |
2572 independent reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.15 e Å−3 |
2572 reflections | Δρmin = −0.15 e Å−3 |
277 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 | ||
O1 | 0.32334 (17) | 0.44018 (14) | 0.41854 (12) | 0.0435 (5) | |
O2 | 0.89891 (18) | 0.25592 (15) | 0.37591 (14) | 0.0564 (6) | |
H2 | 0.9046 | 0.2223 | 0.3350 | 0.085* | |
O3 | 0.7579 (2) | 0.17270 (16) | 0.23475 (15) | 0.0605 (6) | |
H3 | 0.7429 | 0.1208 | 0.2565 | 0.091* | |
O4 | 0.6335 (2) | 0.05223 (14) | 0.33745 (13) | 0.0561 (6) | |
O5 | 0.7984 (2) | 0.70995 (17) | 0.35432 (14) | 0.0662 (6) | |
N1 | 0.6111 (2) | 0.47017 (16) | 0.54202 (13) | 0.0365 (5) | |
C1 | 0.4310 (2) | 0.50466 (19) | 0.39450 (17) | 0.0368 (6) | |
H1 | 0.4124 | 0.5232 | 0.3378 | 0.044* | |
C2 | 0.4232 (3) | 0.5949 (2) | 0.44516 (18) | 0.0448 (7) | |
H2B | 0.4167 | 0.5780 | 0.5025 | 0.054* | |
H2A | 0.3411 | 0.6306 | 0.4305 | 0.054* | |
C3 | 0.5493 (3) | 0.6571 (2) | 0.43140 (19) | 0.0440 (7) | |
H3B | 0.5462 | 0.7114 | 0.4683 | 0.053* | |
H3A | 0.5480 | 0.6816 | 0.3760 | 0.053* | |
C4 | 0.6830 (3) | 0.60164 (19) | 0.44529 (16) | 0.0385 (6) | |
C5 | 0.6955 (2) | 0.51749 (18) | 0.38407 (17) | 0.0356 (6) | |
H5 | 0.7034 | 0.5407 | 0.3278 | 0.043* | |
C6 | 0.8211 (3) | 0.45461 (19) | 0.40829 (18) | 0.0402 (7) | |
H6A | 0.8734 | 0.4363 | 0.3603 | 0.048* | |
H6B | 0.8812 | 0.4891 | 0.4454 | 0.048* | |
C7 | 0.7596 (2) | 0.3657 (2) | 0.45023 (17) | 0.0375 (6) | |
H7 | 0.8128 | 0.3489 | 0.4990 | 0.045* | |
C8 | 0.7561 (3) | 0.2812 (2) | 0.38994 (17) | 0.0403 (7) | |
C9 | 0.6954 (3) | 0.31884 (19) | 0.30943 (16) | 0.0381 (6) | |
H9 | 0.7625 | 0.3596 | 0.2812 | 0.046* | |
C10 | 0.5624 (2) | 0.37418 (19) | 0.32477 (16) | 0.0356 (6) | |
H10 | 0.5415 | 0.4092 | 0.2744 | 0.043* | |
C11 | 0.5686 (2) | 0.44982 (18) | 0.39451 (15) | 0.0317 (6) | |
C12 | 0.4537 (3) | 0.29090 (19) | 0.33160 (18) | 0.0431 (7) | |
H12B | 0.4238 | 0.2833 | 0.3878 | 0.052* | |
H12A | 0.3739 | 0.3047 | 0.2980 | 0.052* | |
C13 | 0.5264 (3) | 0.1990 (2) | 0.30144 (17) | 0.0434 (7) | |
H13 | 0.4657 | 0.1614 | 0.2659 | 0.052* | |
C14 | 0.6491 (3) | 0.2379 (2) | 0.25413 (17) | 0.0459 (7) | |
H14 | 0.6152 | 0.2659 | 0.2031 | 0.055* | |
C15 | 0.6805 (3) | 0.1936 (2) | 0.42678 (18) | 0.0459 (7) | |
H15B | 0.7498 | 0.1481 | 0.4447 | 0.055* | |
H15A | 0.6317 | 0.2152 | 0.4751 | 0.055* | |
C16 | 0.5773 (3) | 0.13917 (19) | 0.37274 (18) | 0.0448 (7) | |
H16 | 0.4978 | 0.1216 | 0.4064 | 0.054* | |
C17 | 0.6132 (2) | 0.40139 (19) | 0.47427 (15) | 0.0338 (6) | |
H17 | 0.5530 | 0.3468 | 0.4864 | 0.041* | |
C18 | 0.8026 (3) | 0.6714 (2) | 0.43440 (19) | 0.0491 (8) | |
H18B | 0.7958 | 0.7227 | 0.4742 | 0.059* | |
H18A | 0.8892 | 0.6382 | 0.4430 | 0.059* | |
C19 | 0.6885 (3) | 0.55955 (19) | 0.53215 (17) | 0.0425 (7) | |
H19A | 0.7839 | 0.5479 | 0.5465 | 0.051* | |
H19B | 0.6525 | 0.6067 | 0.5701 | 0.051* | |
C20 | 0.6367 (3) | 0.4256 (2) | 0.62167 (17) | 0.0474 (7) | |
H20B | 0.7342 | 0.4300 | 0.6341 | 0.057* | |
H20A | 0.6127 | 0.3582 | 0.6187 | 0.057* | |
C21 | 0.5563 (4) | 0.4716 (2) | 0.68945 (19) | 0.0646 (9) | |
H21A | 0.4601 | 0.4712 | 0.6759 | 0.097* | |
H21C | 0.5868 | 0.5366 | 0.6966 | 0.097* | |
H21B | 0.5706 | 0.4365 | 0.7392 | 0.097* | |
C22 | 0.1962 (3) | 0.4556 (2) | 0.3787 (2) | 0.0625 (9) | |
H22A | 0.2084 | 0.4491 | 0.3208 | 0.094* | |
H22C | 0.1634 | 0.5189 | 0.3909 | 0.094* | |
H22B | 0.1303 | 0.4091 | 0.3973 | 0.094* | |
C23 | 0.9152 (4) | 0.7649 (3) | 0.3346 (2) | 0.0748 (11) | |
H23A | 0.9080 | 0.7870 | 0.2793 | 0.112* | |
H23B | 0.9964 | 0.7262 | 0.3404 | 0.112* | |
H23C | 0.9210 | 0.8190 | 0.3707 | 0.112* | |
C24 | 0.6424 (4) | −0.0258 (2) | 0.3919 (2) | 0.0741 (11) | |
H24B | 0.6771 | −0.0810 | 0.3635 | 0.111* | |
H24A | 0.5527 | −0.0399 | 0.4134 | 0.111* | |
H24C | 0.7035 | −0.0098 | 0.4359 | 0.111* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0259 (9) | 0.0517 (11) | 0.0530 (11) | −0.0006 (10) | −0.0017 (8) | 0.0075 (10) |
O2 | 0.0364 (11) | 0.0614 (14) | 0.0715 (15) | 0.0142 (11) | −0.0029 (10) | −0.0154 (12) |
O3 | 0.0587 (12) | 0.0572 (13) | 0.0657 (16) | −0.0016 (12) | 0.0165 (11) | −0.0190 (12) |
O4 | 0.0651 (13) | 0.0430 (11) | 0.0603 (13) | 0.0047 (11) | 0.0012 (11) | −0.0085 (11) |
O5 | 0.0634 (13) | 0.0682 (14) | 0.0670 (15) | −0.0224 (13) | −0.0008 (12) | 0.0161 (12) |
N1 | 0.0382 (11) | 0.0412 (12) | 0.0300 (11) | −0.0002 (11) | −0.0029 (10) | −0.0015 (10) |
C1 | 0.0279 (12) | 0.0447 (15) | 0.0378 (16) | 0.0005 (13) | −0.0033 (12) | 0.0065 (12) |
C2 | 0.0360 (14) | 0.0466 (16) | 0.0518 (18) | 0.0059 (14) | 0.0000 (13) | 0.0005 (15) |
C3 | 0.0427 (15) | 0.0407 (15) | 0.0486 (17) | 0.0047 (14) | −0.0016 (13) | −0.0011 (13) |
C4 | 0.0369 (14) | 0.0371 (14) | 0.0414 (16) | −0.0017 (13) | −0.0041 (12) | −0.0010 (12) |
C5 | 0.0274 (12) | 0.0435 (14) | 0.0360 (15) | −0.0021 (12) | −0.0004 (11) | 0.0008 (13) |
C6 | 0.0276 (12) | 0.0482 (16) | 0.0449 (16) | −0.0010 (14) | −0.0043 (12) | −0.0064 (14) |
C7 | 0.0285 (12) | 0.0430 (15) | 0.0410 (16) | 0.0022 (12) | −0.0093 (12) | −0.0026 (13) |
C8 | 0.0314 (13) | 0.0436 (15) | 0.0459 (16) | 0.0044 (13) | −0.0037 (12) | −0.0054 (14) |
C9 | 0.0359 (13) | 0.0430 (15) | 0.0354 (14) | −0.0062 (14) | 0.0001 (12) | −0.0016 (12) |
C10 | 0.0316 (12) | 0.0445 (14) | 0.0305 (14) | −0.0012 (13) | −0.0052 (11) | −0.0007 (12) |
C11 | 0.0255 (11) | 0.0377 (14) | 0.0318 (14) | 0.0004 (12) | −0.0013 (10) | 0.0015 (11) |
C12 | 0.0352 (14) | 0.0495 (16) | 0.0447 (16) | −0.0038 (14) | −0.0087 (13) | −0.0032 (14) |
C13 | 0.0394 (15) | 0.0495 (17) | 0.0413 (16) | −0.0062 (14) | −0.0032 (13) | −0.0107 (14) |
C14 | 0.0458 (16) | 0.0530 (17) | 0.0389 (16) | −0.0011 (15) | 0.0012 (13) | −0.0081 (14) |
C15 | 0.0501 (17) | 0.0405 (15) | 0.0471 (17) | 0.0035 (15) | −0.0062 (14) | −0.0014 (13) |
C16 | 0.0444 (15) | 0.0428 (15) | 0.0473 (17) | −0.0024 (14) | 0.0063 (14) | −0.0055 (14) |
C17 | 0.0302 (12) | 0.0371 (13) | 0.0339 (14) | 0.0001 (12) | −0.0058 (11) | −0.0021 (12) |
C18 | 0.0472 (16) | 0.0451 (16) | 0.0550 (19) | −0.0078 (16) | −0.0027 (15) | −0.0015 (15) |
C19 | 0.0428 (15) | 0.0443 (15) | 0.0406 (15) | −0.0008 (15) | −0.0051 (13) | −0.0056 (13) |
C20 | 0.0462 (15) | 0.0544 (17) | 0.0416 (16) | 0.0001 (15) | −0.0075 (14) | −0.0002 (15) |
C21 | 0.088 (2) | 0.068 (2) | 0.0375 (17) | 0.000 (2) | −0.0023 (17) | −0.0056 (16) |
C22 | 0.0278 (13) | 0.071 (2) | 0.089 (3) | 0.0022 (16) | −0.0100 (16) | 0.008 (2) |
C23 | 0.068 (2) | 0.073 (2) | 0.084 (3) | −0.021 (2) | 0.017 (2) | 0.006 (2) |
C24 | 0.084 (3) | 0.0498 (19) | 0.088 (3) | 0.009 (2) | −0.001 (2) | −0.003 (2) |
O1—C1 | 1.434 (3) | C9—C10 | 1.526 (4) |
O1—C22 | 1.413 (3) | C9—C14 | 1.515 (4) |
O2—H2 | 0.8200 | C10—H10 | 0.9800 |
O2—C8 | 1.449 (3) | C10—C11 | 1.556 (3) |
O3—H3 | 0.8200 | C10—C12 | 1.573 (4) |
O3—C14 | 1.429 (3) | C11—C17 | 1.532 (3) |
O4—C16 | 1.449 (3) | C12—H12B | 0.9700 |
O4—C24 | 1.410 (4) | C12—H12A | 0.9700 |
O5—C18 | 1.418 (4) | C12—C13 | 1.543 (4) |
O5—C23 | 1.406 (4) | C13—H13 | 0.9800 |
N1—C17 | 1.466 (3) | C13—C14 | 1.521 (4) |
N1—C19 | 1.464 (3) | C13—C16 | 1.518 (4) |
N1—C20 | 1.466 (3) | C14—H14 | 0.9800 |
C1—H1 | 0.9800 | C15—H15B | 0.9700 |
C1—C2 | 1.508 (4) | C15—H15A | 0.9700 |
C1—C11 | 1.540 (3) | C15—C16 | 1.537 (4) |
C2—H2B | 0.9700 | C16—H16 | 0.9800 |
C2—H2A | 0.9700 | C17—H17 | 0.9800 |
C2—C3 | 1.518 (4) | C18—H18B | 0.9700 |
C3—H3B | 0.9700 | C18—H18A | 0.9700 |
C3—H3A | 0.9700 | C19—H19A | 0.9700 |
C3—C4 | 1.527 (4) | C19—H19B | 0.9700 |
C4—C5 | 1.548 (4) | C20—H20B | 0.9700 |
C4—C18 | 1.525 (4) | C20—H20A | 0.9700 |
C4—C19 | 1.539 (4) | C20—C21 | 1.501 (4) |
C5—H5 | 0.9800 | C21—H21A | 0.9600 |
C5—C6 | 1.554 (3) | C21—H21C | 0.9600 |
C5—C11 | 1.561 (3) | C21—H21B | 0.9600 |
C6—H6A | 0.9700 | C22—H22A | 0.9600 |
C6—H6B | 0.9700 | C22—H22C | 0.9600 |
C6—C7 | 1.538 (4) | C22—H22B | 0.9600 |
C7—H7 | 0.9800 | C23—H23A | 0.9600 |
C7—C8 | 1.537 (4) | C23—H23B | 0.9600 |
C7—C17 | 1.558 (3) | C23—H23C | 0.9600 |
C8—C9 | 1.536 (4) | C24—H24B | 0.9600 |
C8—C15 | 1.548 (4) | C24—H24A | 0.9600 |
C9—H9 | 0.9800 | C24—H24C | 0.9600 |
O1—C1—H1 | 106.9 | C8—C15—H15A | 107.7 |
O1—C1—C2 | 109.6 (2) | C9—C8—C7 | 107.3 (2) |
O1—C1—C11 | 108.77 (19) | C9—C8—C15 | 114.9 (2) |
O1—C22—H22A | 109.5 | C9—C10—H10 | 106.8 |
O1—C22—H22C | 109.5 | C9—C10—C11 | 115.5 (2) |
O1—C22—H22B | 109.5 | C9—C10—C12 | 101.9 (2) |
O2—C8—C7 | 105.5 (2) | C9—C14—C13 | 101.2 (2) |
O2—C8—C9 | 108.3 (2) | C9—C14—H14 | 108.2 |
O2—C8—C15 | 108.9 (2) | C10—C9—C8 | 110.9 (2) |
O3—C14—C9 | 112.7 (2) | C10—C9—H9 | 110.3 |
O3—C14—C13 | 117.8 (2) | C10—C11—C5 | 111.1 (2) |
O3—C14—H14 | 108.2 | C10—C12—H12B | 110.4 |
O4—C16—C13 | 106.0 (2) | C10—C12—H12A | 110.4 |
O4—C16—C15 | 113.4 (2) | C11—C1—H1 | 106.9 |
O4—C16—H16 | 108.2 | C11—C5—H5 | 111.4 |
O4—C24—H24B | 109.5 | C11—C10—H10 | 106.8 |
O4—C24—H24A | 109.5 | C11—C10—C12 | 118.3 (2) |
O4—C24—H24C | 109.5 | C11—C17—C7 | 100.6 (2) |
O5—C18—C4 | 109.1 (2) | C11—C17—H17 | 110.3 |
O5—C18—H18B | 109.9 | C12—C10—H10 | 106.8 |
O5—C18—H18A | 109.9 | C12—C13—H13 | 111.0 |
O5—C23—H23A | 109.5 | H12B—C12—H12A | 108.6 |
O5—C23—H23B | 109.5 | C13—C12—C10 | 106.4 (2) |
O5—C23—H23C | 109.5 | C13—C12—H12B | 110.4 |
N1—C17—C7 | 114.36 (19) | C13—C12—H12A | 110.4 |
N1—C17—C11 | 110.7 (2) | C13—C14—H14 | 108.2 |
N1—C17—H17 | 110.3 | C13—C16—C15 | 112.6 (2) |
N1—C19—C4 | 114.1 (2) | C13—C16—H16 | 108.2 |
N1—C19—H19A | 108.7 | C14—O3—H3 | 109.5 |
N1—C19—H19B | 108.7 | C14—C9—C8 | 111.9 (2) |
N1—C20—H20B | 109.0 | C14—C9—H9 | 110.3 |
N1—C20—H20A | 109.0 | C14—C9—C10 | 102.9 (2) |
N1—C20—C21 | 112.9 (2) | C14—C13—C12 | 103.1 (2) |
C1—C2—H2B | 109.5 | C14—C13—H13 | 111.0 |
C1—C2—H2A | 109.5 | C15—C16—H16 | 108.2 |
C1—C2—C3 | 110.7 (2) | H15B—C15—H15A | 107.1 |
C1—C11—C5 | 112.7 (2) | C16—C13—C12 | 111.0 (2) |
C1—C11—C10 | 107.6 (2) | C16—C13—H13 | 111.0 |
C2—C1—H1 | 106.9 | C16—C13—C14 | 109.4 (2) |
C2—C1—C11 | 117.2 (2) | C16—C15—C8 | 118.3 (2) |
C2—C3—H3B | 109.2 | C16—C15—H15B | 107.7 |
C2—C3—H3A | 109.2 | C16—C15—H15A | 107.7 |
C2—C3—C4 | 112.0 (2) | C17—C7—H7 | 110.6 |
H2B—C2—H2A | 108.1 | C17—C11—C1 | 117.6 (2) |
C3—C2—H2B | 109.5 | C17—C11—C5 | 97.86 (19) |
C3—C2—H2A | 109.5 | C17—C11—C10 | 109.7 (2) |
C3—C4—C5 | 110.7 (2) | C18—C4—C3 | 107.9 (2) |
C3—C4—C19 | 111.1 (2) | C18—C4—C5 | 110.3 (2) |
H3B—C3—H3A | 107.9 | C18—C4—C19 | 108.9 (2) |
C4—C3—H3B | 109.2 | H18B—C18—H18A | 108.3 |
C4—C3—H3A | 109.2 | C19—N1—C17 | 117.8 (2) |
C4—C5—H5 | 111.4 | C19—N1—C20 | 111.8 (2) |
C4—C5—C6 | 108.9 (2) | C19—C4—C5 | 107.9 (2) |
C4—C5—C11 | 109.0 (2) | H19A—C19—H19B | 107.6 |
C4—C18—H18B | 109.9 | C20—N1—C17 | 113.2 (2) |
C4—C18—H18A | 109.9 | C20—C21—H21A | 109.5 |
C4—C19—H19A | 108.7 | C20—C21—H21C | 109.5 |
C4—C19—H19B | 108.7 | C20—C21—H21B | 109.5 |
C5—C6—H6A | 110.7 | H20B—C20—H20A | 107.8 |
C5—C6—H6B | 110.7 | C21—C20—H20B | 109.0 |
C6—C5—H5 | 111.4 | C21—C20—H20A | 109.0 |
C6—C5—C11 | 104.53 (19) | H21A—C21—H21C | 109.5 |
C6—C7—H7 | 110.6 | H21A—C21—H21B | 109.5 |
C6—C7—C17 | 102.1 (2) | H21C—C21—H21B | 109.5 |
H6A—C6—H6B | 108.8 | C22—O1—C1 | 114.6 (2) |
C7—C6—C5 | 105.31 (19) | H22A—C22—H22C | 109.5 |
C7—C6—H6A | 110.7 | H22A—C22—H22B | 109.5 |
C7—C6—H6B | 110.7 | H22C—C22—H22B | 109.5 |
C7—C8—C15 | 111.4 (2) | C23—O5—C18 | 113.3 (3) |
C7—C17—H17 | 110.3 | H23A—C23—H23B | 109.5 |
C8—O2—H2 | 109.5 | H23A—C23—H23C | 109.5 |
C8—C7—C6 | 109.8 (2) | H23B—C23—H23C | 109.5 |
C8—C7—H7 | 110.6 | C24—O4—C16 | 114.6 (2) |
C8—C7—C17 | 112.8 (2) | H24B—C24—H24A | 109.5 |
C8—C9—H9 | 110.3 | H24B—C24—H24C | 109.5 |
C8—C15—H15B | 107.7 | H24A—C24—H24C | 109.5 |
O1—C1—C2—C3 | 170.4 (2) | C9—C10—C11—C1 | 174.2 (2) |
O1—C1—C11—C5 | −170.0 (2) | C9—C10—C11—C5 | 50.5 (3) |
O1—C1—C11—C10 | 67.2 (2) | C9—C10—C11—C17 | −56.6 (3) |
O1—C1—C11—C17 | −57.3 (3) | C9—C10—C12—C13 | −12.0 (3) |
O2—C8—C9—C10 | −162.8 (2) | C10—C9—C14—O3 | −177.0 (2) |
O2—C8—C9—C14 | 82.9 (3) | C10—C9—C14—C13 | −50.3 (3) |
O2—C8—C15—C16 | −108.1 (3) | C10—C11—C17—N1 | −176.36 (19) |
C1—C2—C3—C4 | −53.5 (3) | C10—C11—C17—C7 | 62.4 (2) |
C1—C11—C17—N1 | −52.9 (3) | C10—C12—C13—C14 | −18.0 (3) |
C1—C11—C17—C7 | −174.2 (2) | C10—C12—C13—C16 | 99.0 (2) |
C2—C1—C11—C5 | −45.0 (3) | C11—C1—C2—C3 | 45.9 (3) |
C2—C1—C11—C10 | −167.8 (2) | C11—C5—C6—C7 | −13.3 (3) |
C2—C1—C11—C17 | 67.7 (3) | C11—C10—C12—C13 | −139.9 (2) |
C2—C3—C4—C5 | 62.1 (3) | C12—C10—C11—C1 | −64.6 (3) |
C2—C3—C4—C18 | −177.1 (2) | C12—C10—C11—C5 | 171.6 (2) |
C2—C3—C4—C19 | −57.7 (3) | C12—C10—C11—C17 | 64.5 (3) |
C3—C4—C5—C6 | −171.8 (2) | C12—C13—C14—O3 | 164.7 (2) |
C3—C4—C5—C11 | −58.4 (3) | C12—C13—C14—C9 | 41.4 (3) |
C3—C4—C18—O5 | −59.6 (3) | C12—C13—C16—O4 | 175.7 (2) |
C3—C4—C19—N1 | 80.8 (3) | C12—C13—C16—C15 | −59.8 (3) |
C4—C5—C6—C7 | 103.0 (2) | C14—C9—C10—C11 | 167.5 (2) |
C4—C5—C11—C1 | 49.3 (3) | C14—C9—C10—C12 | 37.9 (3) |
C4—C5—C11—C10 | 170.1 (2) | C14—C13—C16—O4 | −71.2 (3) |
C4—C5—C11—C17 | −75.1 (2) | C14—C13—C16—C15 | 53.3 (3) |
C5—C4—C18—O5 | 61.5 (3) | C15—C8—C9—C10 | 75.1 (3) |
C5—C4—C19—N1 | −40.7 (3) | C15—C8—C9—C14 | −39.1 (3) |
C5—C6—C7—C8 | 100.3 (2) | C16—C13—C14—O3 | 46.5 (3) |
C5—C6—C7—C17 | −19.6 (3) | C16—C13—C14—C9 | −76.8 (3) |
C5—C11—C17—N1 | 67.8 (2) | C17—N1—C19—C4 | 37.6 (3) |
C5—C11—C17—C7 | −53.4 (2) | C17—N1—C20—C21 | −144.9 (2) |
C6—C5—C11—C1 | 165.6 (2) | C17—C7—C8—O2 | −178.7 (2) |
C6—C5—C11—C10 | −73.6 (2) | C17—C7—C8—C9 | 66.0 (3) |
C6—C5—C11—C17 | 41.1 (2) | C17—C7—C8—C15 | −60.6 (3) |
C6—C7—C8—O2 | 68.2 (3) | C18—C4—C5—C6 | 68.8 (3) |
C6—C7—C8—C9 | −47.2 (3) | C18—C4—C5—C11 | −177.8 (2) |
C6—C7—C8—C15 | −173.8 (2) | C18—C4—C19—N1 | −160.5 (2) |
C6—C7—C17—N1 | −72.3 (3) | C19—N1—C17—C7 | 58.9 (3) |
C6—C7—C17—C11 | 46.3 (2) | C19—N1—C17—C11 | −53.8 (3) |
C7—C8—C9—C10 | −49.4 (3) | C19—N1—C20—C21 | 79.3 (3) |
C7—C8—C9—C14 | −163.6 (2) | C19—C4—C5—C6 | −50.1 (3) |
C7—C8—C15—C16 | 135.9 (2) | C19—C4—C5—C11 | 63.4 (3) |
C8—C7—C17—N1 | 169.9 (2) | C19—C4—C18—O5 | 179.7 (2) |
C8—C7—C17—C11 | −71.5 (3) | C20—N1—C17—C7 | −74.2 (3) |
C8—C9—C10—C11 | 47.8 (3) | C20—N1—C17—C11 | 173.1 (2) |
C8—C9—C10—C12 | −81.9 (2) | C20—N1—C19—C4 | 171.3 (2) |
C8—C9—C14—O3 | −58.0 (3) | C22—O1—C1—C2 | 86.3 (3) |
C8—C9—C14—C13 | 68.8 (3) | C22—O1—C1—C11 | −144.4 (2) |
C8—C15—C16—O4 | 99.8 (3) | C23—O5—C18—C4 | −171.7 (2) |
C8—C15—C16—C13 | −20.5 (3) | C24—O4—C16—C13 | −159.0 (3) |
C9—C8—C15—C16 | 13.6 (3) | C24—O4—C16—C15 | 77.0 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O3 | 0.82 | 2.28 | 2.926 (3) | 136 |
O3—H3···O4 | 0.82 | 1.95 | 2.666 (3) | 146 |
Experimental details
Crystal data | |
Chemical formula | C24H39NO5 |
Mr | 421.56 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 293 |
a, b, c (Å) | 9.7124 (4), 13.9401 (7), 16.3729 (8) |
V (Å3) | 2216.77 (17) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.40 × 0.40 × 0.35 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Eos |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6644, 2572, 2068 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.625 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.097, 1.04 |
No. of reflections | 2572 |
No. of parameters | 277 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.15, −0.15 |
Computer programs: CrysAlis CCD (Oxford Diffraction, 2009), CrysAlis RED (Oxford Diffraction, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), OLEX2 (Dolomanov et al., 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O3 | 0.82 | 2.28 | 2.926 (3) | 136.0 |
O3—H3···O4 | 0.82 | 1.95 | 2.666 (3) | 145.6 |
Acknowledgements
This project was supported by the Scientific Research Fund of Mianyang Normal University, China.
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.
As a famous Chinese traditional herbal, the roots of Aconitum carmichaeli Debx., known as "Chuanwu", has been therapeutically used to the treatment of rheumatic pain, rheumatoid arthritis and some other inflammations. Recently, two important reviews focus on the alkaloids from the genus Aconitum (Wang et al., 2009 and 2010). The title compound, N-methyl-8β,14β-dihydroxy-1α,16β-trimethoxy-4β-(methoxymethylene)aconitane, talatisamine, has been isolated previously from many genus of AconitumL., inculding A. carmichaeli Debx. (Pelletier et al., 1984), and its structure was established from the NMR and MS data (Wiesner et al., 1974). However, in our recent investigation, it was isolation from the root of Aconitum carmichaeli Debx. collected in the Jiangyou country, Sichuan Province of China in June, 2011. The crystal structure of talatisamine has not been reported. In view of this, the crystal structure determination of the title compound was carried out and the result is presented here.
The molecular structure of the title compound is shown in Fig. 1. The molecule has a high rigid structure consisting of six main rings (A–F). Six-membered rings A (C1/C2/C3/C4/C5/C11), B (C7/C8/C9/C10/C11/C17) and D(C8/C9/C14/C13/C16/C15) adopt chair conformations; six-membered heterocyclicring E (C4/C5/C11/C17/N1/C19) adopts the same chair conformation. The five-membered rings C (C9/C10/C12/C13/C14) and F (C5/C6/C7/C17/C11) display anenvelope conformation, in which, the C14 and C11 act as the "envelope atom" respectively. Two cis-fused ring junctions are observed between rings A/E and between B/C. Two trans-fused ring junctions involve rings A/B and also E/F. The crystal structure contains intermolecular O—H···O hydrogen bond between the hydroxyl group and carbonyl O atom. The absolute configuration of the title compound can not be confirmed by the present MoKa diffraction data. But it can be assumed to be the same as that reported for C19-diterpenoidalkaloids from the nature (Gao et al., 2010; Tashkhodjaev & Sultankhodjaev, 2009; He et al.., 2008; Pelletier & Djarmati, 1976; Tsuda & Marion, 1963; Zhapova et al., 1986).