organic compounds
Anthriscifolcine A, a C18-diterpenoid alkaloid
aKey Laboratory of Natural Pesticides and Chemical Biology, South China Agricultural University, Guangzhou 510642, People's Republic of China, and bCollege of Agriculture, Yangtze University, Jingzhou, Hubei 434025, People's Republic of China
*Correspondence e-mail: hhxu@scau.edu.cn
The title compound, C26H39NO7, which was isolated from Delphinium anthriscifolium var. majus, has a lycoctonine carbon skeleton containing four six-membered rings (A, B, D and E) and three five-membered rings (C, F and G). Rings A, B and E adopt chair conformation, while ring D adopts a boat conformation. Rings C and F adopt envelope conformations.
Related literature
For the preparation, see: Song et al. (2007). For other lycoctonine-type diterpenoid see: Tashkhodjaev & Sultankhodjaev (2009).
Experimental
Crystal data
|
Data collection: CrystalClear (Rigaku, 2002); cell CrystalClear; data reduction: CrystalClear; 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/S1600536811001346/bt5455sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811001346/bt5455Isup2.hkl
The title compound was isolated from the EtOAc fraction of the leaves of D. A. var. majus by a known method (Song et al., 2007). Colourless single crystals were obtained by slow evaporation of an ethanol solution at room temperature (m.p. 485–487 K).
All H atoms were positioned geometrically and allowed to ride on their parent atoms at distances of Csp2—H = 0.93 Å with Uiso=1.2Ueq(C), and Csp3—H = 0.96 or 0.97 Å with Uiso=1.5Ueq(C).
Data collection: CrystalClear (Rigaku, 2002); cell
CrystalClear (Rigaku, 2002); data reduction: CrystalClear (Rigaku, 2002); 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. The molecular structure of the title compound with the atom numbering, showing displacement ellipsoids at the 30% probability level. |
C26H39NO7 | Dx = 1.313 Mg m−3 |
Mr = 477.58 | Mo Kα radiation, λ = 0.71073 Å |
Orthorhombic, P212121 | Cell parameters from 8028 reflections |
a = 8.9444 (16) Å | θ = 3.1–27.5° |
b = 14.135 (3) Å | µ = 0.09 mm−1 |
c = 19.112 (3) Å | T = 133 K |
V = 2416.4 (7) Å3 | Block, colorless |
Z = 4 | 0.45 × 0.43 × 0.31 mm |
F(000) = 1032 |
Rigaku AFC10/Saturn724+ diffractometer | 3020 reflections with I > 2σ(I) |
Radiation source: Rotating Anode | Rint = 0.034 |
Graphite monochromator | θmax = 27.5°, θmin = 3.1° |
Detector resolution: 28.5714 pixels mm-1 | h = −11→11 |
ϕ and ω scans | k = −18→18 |
19113 measured reflections | l = −21→24 |
3122 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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.080 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0431P)2 + 0.616P] where P = (Fo2 + 2Fc2)/3 |
3122 reflections | (Δ/σ)max < 0.001 |
312 parameters | Δρmax = 0.24 e Å−3 |
0 restraints | Δρmin = −0.17 e Å−3 |
C26H39NO7 | V = 2416.4 (7) Å3 |
Mr = 477.58 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 8.9444 (16) Å | µ = 0.09 mm−1 |
b = 14.135 (3) Å | T = 133 K |
c = 19.112 (3) Å | 0.45 × 0.43 × 0.31 mm |
Rigaku AFC10/Saturn724+ diffractometer | 3020 reflections with I > 2σ(I) |
19113 measured reflections | Rint = 0.034 |
3122 independent reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.080 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.24 e Å−3 |
3122 reflections | Δρmin = −0.17 e Å−3 |
312 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 | 0.30623 (14) | 0.49917 (9) | 0.71667 (6) | 0.0201 (3) | |
O2 | 0.44209 (14) | 0.42792 (9) | 0.62909 (7) | 0.0203 (3) | |
O3 | 0.72126 (15) | 0.46178 (8) | 0.91841 (6) | 0.0199 (3) | |
O4 | 0.36463 (14) | 0.26667 (8) | 0.70942 (7) | 0.0195 (3) | |
O5 | 0.13732 (16) | 0.30454 (11) | 0.66750 (8) | 0.0329 (3) | |
O7 | 0.77283 (14) | 0.39651 (9) | 0.59355 (6) | 0.0194 (3) | |
O8 | 0.85214 (15) | 0.60530 (9) | 0.65703 (7) | 0.0232 (3) | |
N1 | 0.37859 (17) | 0.49307 (10) | 0.87482 (8) | 0.0191 (3) | |
C1 | 0.6416 (2) | 0.37444 (12) | 0.90962 (9) | 0.0197 (4) | |
H1 | 0.7167 | 0.3220 | 0.9102 | 0.024* | |
C2 | 0.5383 (2) | 0.36093 (14) | 0.97290 (9) | 0.0258 (4) | |
H2A | 0.5983 | 0.3382 | 1.0130 | 0.031* | |
H2B | 0.4949 | 0.4229 | 0.9859 | 0.031* | |
C3 | 0.4122 (3) | 0.29143 (15) | 0.95935 (10) | 0.0314 (5) | |
H3A | 0.3420 | 0.2917 | 0.9994 | 0.038* | |
H3B | 0.4534 | 0.2268 | 0.9546 | 0.038* | |
C4 | 0.3289 (2) | 0.31858 (13) | 0.89248 (10) | 0.0253 (4) | |
H4 | 0.2426 | 0.2743 | 0.8867 | 0.030* | |
C5 | 0.4337 (2) | 0.30608 (12) | 0.82959 (9) | 0.0196 (4) | |
H5 | 0.4687 | 0.2391 | 0.8254 | 0.024* | |
C6 | 0.3504 (2) | 0.33800 (12) | 0.76349 (9) | 0.0183 (4) | |
H6 | 0.2420 | 0.3455 | 0.7752 | 0.022* | |
C7 | 0.4165 (2) | 0.43769 (12) | 0.74658 (9) | 0.0162 (3) | |
C8 | 0.53840 (19) | 0.43831 (12) | 0.69037 (9) | 0.0158 (3) | |
C9 | 0.6448 (2) | 0.35546 (11) | 0.70054 (8) | 0.0158 (3) | |
H9 | 0.5985 | 0.2951 | 0.6840 | 0.019* | |
C10 | 0.6892 (2) | 0.34851 (12) | 0.78001 (9) | 0.0168 (3) | |
H10 | 0.7135 | 0.2804 | 0.7886 | 0.020* | |
C11 | 0.5674 (2) | 0.37552 (11) | 0.83597 (9) | 0.0164 (3) | |
C12 | 0.84195 (19) | 0.40274 (13) | 0.78403 (9) | 0.0195 (4) | |
H12A | 0.8383 | 0.4521 | 0.8207 | 0.023* | |
H12B | 0.9244 | 0.3584 | 0.7950 | 0.023* | |
C13 | 0.8657 (2) | 0.44761 (12) | 0.71208 (9) | 0.0172 (3) | |
H13 | 0.9745 | 0.4553 | 0.7017 | 0.021* | |
C14 | 0.7952 (2) | 0.37223 (12) | 0.66496 (9) | 0.0169 (3) | |
H14 | 0.8562 | 0.3130 | 0.6676 | 0.020* | |
C15 | 0.6204 (2) | 0.53451 (12) | 0.68240 (9) | 0.0176 (3) | |
H15A | 0.6172 | 0.5522 | 0.6323 | 0.021* | |
H15B | 0.5617 | 0.5826 | 0.7082 | 0.021* | |
C16 | 0.7835 (2) | 0.54252 (12) | 0.70678 (9) | 0.0174 (3) | |
H16 | 0.7850 | 0.5735 | 0.7538 | 0.021* | |
C17 | 0.4825 (2) | 0.46807 (12) | 0.81829 (9) | 0.0160 (3) | |
H17 | 0.5558 | 0.5206 | 0.8112 | 0.019* | |
C19 | 0.2676 (2) | 0.42064 (14) | 0.89324 (11) | 0.0254 (4) | |
H19A | 0.1831 | 0.4248 | 0.8600 | 0.030* | |
H19B | 0.2282 | 0.4346 | 0.9405 | 0.030* | |
C21 | 0.3093 (2) | 0.58623 (13) | 0.86550 (10) | 0.0239 (4) | |
H21A | 0.2231 | 0.5803 | 0.8333 | 0.029* | |
H21B | 0.3826 | 0.6297 | 0.8437 | 0.029* | |
C22 | 0.2559 (3) | 0.62839 (16) | 0.93459 (11) | 0.0325 (5) | |
H22A | 0.3375 | 0.6265 | 0.9688 | 0.049* | |
H22B | 0.1710 | 0.5917 | 0.9522 | 0.049* | |
H22C | 0.2250 | 0.6941 | 0.9272 | 0.049* | |
C23 | 0.8432 (2) | 0.45474 (15) | 0.96600 (10) | 0.0280 (4) | |
H23A | 0.9164 | 0.4092 | 0.9480 | 0.042* | |
H23B | 0.8064 | 0.4333 | 1.0116 | 0.042* | |
H23C | 0.8907 | 0.5168 | 0.9711 | 0.042* | |
C24 | 0.3230 (2) | 0.49072 (13) | 0.64212 (9) | 0.0222 (4) | |
H24A | 0.2297 | 0.4661 | 0.6211 | 0.027* | |
H24B | 0.3448 | 0.5534 | 0.6213 | 0.027* | |
C25 | 0.9100 (2) | 0.40192 (14) | 0.55639 (9) | 0.0235 (4) | |
H25A | 0.9603 | 0.3404 | 0.5580 | 0.035* | |
H25B | 0.9741 | 0.4500 | 0.5779 | 0.035* | |
H25C | 0.8902 | 0.4191 | 0.5076 | 0.035* | |
C26 | 0.9849 (2) | 0.64858 (14) | 0.68263 (12) | 0.0309 (5) | |
H26A | 1.0587 | 0.5996 | 0.6938 | 0.046* | |
H26B | 0.9618 | 0.6849 | 0.7249 | 0.046* | |
H26C | 1.0256 | 0.6910 | 0.6468 | 0.046* | |
C27 | 0.2532 (2) | 0.26281 (12) | 0.66158 (10) | 0.0217 (4) | |
C28 | 0.2948 (3) | 0.20041 (14) | 0.60156 (10) | 0.0290 (4) | |
H28A | 0.2156 | 0.2024 | 0.5662 | 0.043* | |
H28B | 0.3074 | 0.1353 | 0.6182 | 0.043* | |
H28C | 0.3888 | 0.2226 | 0.5809 | 0.043* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0192 (6) | 0.0210 (6) | 0.0201 (6) | 0.0050 (5) | −0.0024 (5) | 0.0006 (5) |
O2 | 0.0209 (6) | 0.0231 (6) | 0.0169 (6) | 0.0025 (5) | −0.0042 (5) | −0.0019 (5) |
O3 | 0.0232 (6) | 0.0172 (6) | 0.0192 (6) | −0.0015 (5) | −0.0048 (5) | −0.0015 (5) |
O4 | 0.0214 (6) | 0.0166 (6) | 0.0205 (6) | −0.0012 (5) | −0.0026 (5) | −0.0049 (5) |
O5 | 0.0222 (7) | 0.0412 (8) | 0.0355 (8) | 0.0049 (7) | −0.0078 (6) | −0.0115 (7) |
O7 | 0.0208 (6) | 0.0235 (6) | 0.0139 (6) | 0.0023 (5) | −0.0001 (5) | −0.0004 (5) |
O8 | 0.0231 (6) | 0.0188 (6) | 0.0277 (7) | −0.0045 (6) | 0.0002 (6) | 0.0053 (5) |
N1 | 0.0202 (7) | 0.0173 (7) | 0.0196 (7) | −0.0008 (6) | 0.0042 (6) | −0.0032 (6) |
C1 | 0.0277 (9) | 0.0134 (7) | 0.0180 (8) | 0.0003 (7) | −0.0022 (8) | 0.0013 (6) |
C2 | 0.0372 (11) | 0.0245 (9) | 0.0157 (9) | −0.0057 (9) | 0.0001 (8) | 0.0021 (7) |
C3 | 0.0460 (12) | 0.0281 (10) | 0.0200 (9) | −0.0140 (10) | 0.0045 (9) | 0.0034 (8) |
C4 | 0.0310 (10) | 0.0225 (9) | 0.0223 (9) | −0.0124 (8) | 0.0046 (8) | −0.0007 (7) |
C5 | 0.0260 (9) | 0.0136 (8) | 0.0191 (9) | −0.0036 (7) | −0.0001 (7) | −0.0005 (6) |
C6 | 0.0199 (8) | 0.0156 (8) | 0.0194 (8) | −0.0026 (7) | 0.0002 (7) | −0.0032 (7) |
C7 | 0.0157 (8) | 0.0141 (7) | 0.0187 (8) | 0.0005 (7) | −0.0007 (7) | 0.0010 (6) |
C8 | 0.0187 (8) | 0.0147 (8) | 0.0140 (8) | 0.0011 (7) | −0.0021 (7) | −0.0004 (6) |
C9 | 0.0184 (8) | 0.0136 (7) | 0.0154 (8) | 0.0008 (7) | −0.0009 (7) | −0.0007 (6) |
C10 | 0.0203 (8) | 0.0136 (7) | 0.0166 (8) | 0.0037 (7) | −0.0008 (7) | 0.0006 (6) |
C11 | 0.0212 (8) | 0.0120 (7) | 0.0159 (8) | −0.0002 (7) | −0.0002 (7) | 0.0011 (6) |
C12 | 0.0184 (8) | 0.0216 (8) | 0.0185 (8) | 0.0018 (7) | −0.0024 (7) | 0.0020 (7) |
C13 | 0.0183 (7) | 0.0169 (8) | 0.0166 (8) | 0.0027 (7) | −0.0007 (7) | −0.0009 (6) |
C14 | 0.0195 (8) | 0.0151 (8) | 0.0160 (8) | 0.0026 (7) | −0.0003 (7) | −0.0011 (6) |
C15 | 0.0196 (9) | 0.0151 (8) | 0.0181 (8) | 0.0030 (7) | 0.0006 (7) | 0.0025 (6) |
C16 | 0.0203 (8) | 0.0150 (8) | 0.0171 (8) | −0.0003 (7) | 0.0012 (7) | 0.0006 (6) |
C17 | 0.0181 (8) | 0.0141 (7) | 0.0158 (8) | −0.0008 (7) | 0.0019 (7) | −0.0009 (6) |
C19 | 0.0255 (9) | 0.0284 (10) | 0.0223 (10) | −0.0073 (8) | 0.0071 (8) | −0.0042 (7) |
C21 | 0.0242 (9) | 0.0237 (9) | 0.0240 (9) | 0.0048 (8) | 0.0002 (8) | −0.0037 (7) |
C22 | 0.0350 (11) | 0.0320 (11) | 0.0304 (11) | 0.0120 (9) | 0.0020 (9) | −0.0085 (8) |
C23 | 0.0269 (10) | 0.0335 (10) | 0.0237 (9) | 0.0028 (9) | −0.0071 (8) | −0.0031 (8) |
C24 | 0.0216 (9) | 0.0247 (9) | 0.0204 (9) | 0.0032 (8) | −0.0043 (7) | 0.0005 (7) |
C25 | 0.0234 (8) | 0.0292 (10) | 0.0180 (9) | −0.0001 (8) | 0.0025 (7) | 0.0015 (7) |
C26 | 0.0256 (10) | 0.0214 (9) | 0.0457 (12) | −0.0053 (8) | −0.0010 (9) | −0.0005 (9) |
C27 | 0.0228 (9) | 0.0188 (8) | 0.0236 (9) | −0.0038 (8) | −0.0021 (7) | −0.0003 (7) |
C28 | 0.0353 (11) | 0.0275 (10) | 0.0242 (10) | 0.0037 (9) | −0.0070 (9) | −0.0063 (8) |
O1—C7 | 1.433 (2) | C10—C12 | 1.568 (2) |
O1—C24 | 1.438 (2) | C10—C11 | 1.574 (2) |
O2—C24 | 1.409 (2) | C10—H10 | 1.0000 |
O2—C8 | 1.461 (2) | C11—C17 | 1.550 (2) |
O3—C23 | 1.424 (2) | C12—C13 | 1.529 (2) |
O3—C1 | 1.435 (2) | C12—H12A | 0.9900 |
O4—C27 | 1.354 (2) | C12—H12B | 0.9900 |
O4—C6 | 1.449 (2) | C13—C14 | 1.531 (2) |
O5—C27 | 1.198 (2) | C13—C16 | 1.533 (2) |
O7—C25 | 1.419 (2) | C13—H13 | 1.0000 |
O7—C14 | 1.422 (2) | C14—H14 | 1.0000 |
O8—C26 | 1.422 (2) | C15—C16 | 1.536 (2) |
O8—C16 | 1.438 (2) | C15—H15A | 0.9900 |
N1—C21 | 1.466 (2) | C15—H15B | 0.9900 |
N1—C17 | 1.468 (2) | C16—H16 | 1.0000 |
N1—C19 | 1.469 (2) | C17—H17 | 1.0000 |
C1—C2 | 1.534 (3) | C19—H19A | 0.9900 |
C1—C11 | 1.557 (2) | C19—H19B | 0.9900 |
C1—H1 | 1.0000 | C21—C22 | 1.525 (3) |
C2—C3 | 1.518 (3) | C21—H21A | 0.9900 |
C2—H2A | 0.9900 | C21—H21B | 0.9900 |
C2—H2B | 0.9900 | C22—H22A | 0.9800 |
C3—C4 | 1.528 (3) | C22—H22B | 0.9800 |
C3—H3A | 0.9900 | C22—H22C | 0.9800 |
C3—H3B | 0.9900 | C23—H23A | 0.9800 |
C4—C5 | 1.534 (3) | C23—H23B | 0.9800 |
C4—C19 | 1.543 (3) | C23—H23C | 0.9800 |
C4—H4 | 1.0000 | C24—H24A | 0.9900 |
C5—C6 | 1.534 (2) | C24—H24B | 0.9900 |
C5—C11 | 1.552 (2) | C25—H25A | 0.9800 |
C5—H5 | 1.0000 | C25—H25B | 0.9800 |
C6—C7 | 1.562 (2) | C25—H25C | 0.9800 |
C6—H6 | 1.0000 | C26—H26A | 0.9800 |
C7—C8 | 1.531 (2) | C26—H26B | 0.9800 |
C7—C17 | 1.553 (2) | C26—H26C | 0.9800 |
C8—C9 | 1.522 (2) | C27—C28 | 1.494 (3) |
C8—C15 | 1.552 (2) | C28—H28A | 0.9800 |
C9—C14 | 1.526 (2) | C28—H28B | 0.9800 |
C9—C10 | 1.573 (2) | C28—H28C | 0.9800 |
C9—H9 | 1.0000 | ||
C7—O1—C24 | 105.84 (13) | C12—C13—C14 | 100.56 (14) |
C24—O2—C8 | 103.92 (13) | C12—C13—C16 | 110.85 (14) |
C23—O3—C1 | 113.26 (14) | C14—C13—C16 | 111.90 (14) |
C27—O4—C6 | 116.41 (14) | C12—C13—H13 | 111.0 |
C25—O7—C14 | 111.81 (14) | C14—C13—H13 | 111.0 |
C26—O8—C16 | 113.22 (15) | C16—C13—H13 | 111.0 |
C21—N1—C17 | 113.23 (14) | O7—C14—C9 | 109.93 (14) |
C21—N1—C19 | 111.68 (15) | O7—C14—C13 | 117.06 (14) |
C17—N1—C19 | 115.87 (14) | C9—C14—C13 | 102.05 (13) |
O3—C1—C2 | 108.29 (14) | O7—C14—H14 | 109.1 |
O3—C1—C11 | 108.02 (13) | C9—C14—H14 | 109.1 |
C2—C1—C11 | 117.18 (16) | C13—C14—H14 | 109.1 |
O3—C1—H1 | 107.7 | C16—C15—C8 | 118.92 (14) |
C2—C1—H1 | 107.7 | C16—C15—H15A | 107.6 |
C11—C1—H1 | 107.7 | C8—C15—H15A | 107.6 |
C3—C2—C1 | 113.19 (16) | C16—C15—H15B | 107.6 |
C3—C2—H2A | 108.9 | C8—C15—H15B | 107.6 |
C1—C2—H2A | 108.9 | H15A—C15—H15B | 107.0 |
C3—C2—H2B | 108.9 | O8—C16—C13 | 112.28 (14) |
C1—C2—H2B | 108.9 | O8—C16—C15 | 104.50 (14) |
H2A—C2—H2B | 107.8 | C13—C16—C15 | 114.26 (14) |
C2—C3—C4 | 110.01 (16) | O8—C16—H16 | 108.5 |
C2—C3—H3A | 109.7 | C13—C16—H16 | 108.5 |
C4—C3—H3A | 109.7 | C15—C16—H16 | 108.5 |
C2—C3—H3B | 109.7 | N1—C17—C11 | 110.66 (14) |
C4—C3—H3B | 109.7 | N1—C17—C7 | 118.36 (14) |
H3A—C3—H3B | 108.2 | C11—C17—C7 | 98.35 (13) |
C3—C4—C5 | 109.20 (17) | N1—C17—H17 | 109.6 |
C3—C4—C19 | 113.58 (17) | C11—C17—H17 | 109.6 |
C5—C4—C19 | 109.38 (14) | C7—C17—H17 | 109.6 |
C3—C4—H4 | 108.2 | N1—C19—C4 | 114.17 (16) |
C5—C4—H4 | 108.2 | N1—C19—H19A | 108.7 |
C19—C4—H4 | 108.2 | C4—C19—H19A | 108.7 |
C4—C5—C6 | 108.35 (15) | N1—C19—H19B | 108.7 |
C4—C5—C11 | 109.64 (14) | C4—C19—H19B | 108.7 |
C6—C5—C11 | 104.64 (13) | H19A—C19—H19B | 107.6 |
C4—C5—H5 | 111.3 | N1—C21—C22 | 112.21 (16) |
C6—C5—H5 | 111.3 | N1—C21—H21A | 109.2 |
C11—C5—H5 | 111.3 | C22—C21—H21A | 109.2 |
O4—C6—C5 | 109.86 (14) | N1—C21—H21B | 109.2 |
O4—C6—C7 | 116.54 (14) | C22—C21—H21B | 109.2 |
C5—C6—C7 | 104.58 (14) | H21A—C21—H21B | 107.9 |
O4—C6—H6 | 108.5 | C21—C22—H22A | 109.5 |
C5—C6—H6 | 108.5 | C21—C22—H22B | 109.5 |
C7—C6—H6 | 108.5 | H22A—C22—H22B | 109.5 |
O1—C7—C8 | 101.93 (13) | C21—C22—H22C | 109.5 |
O1—C7—C17 | 116.49 (14) | H22A—C22—H22C | 109.5 |
C8—C7—C17 | 110.30 (14) | H22B—C22—H22C | 109.5 |
O1—C7—C6 | 111.66 (14) | O3—C23—H23A | 109.5 |
C8—C7—C6 | 114.84 (14) | O3—C23—H23B | 109.5 |
C17—C7—C6 | 102.17 (13) | H23A—C23—H23B | 109.5 |
O2—C8—C9 | 113.19 (14) | O3—C23—H23C | 109.5 |
O2—C8—C7 | 98.17 (13) | H23A—C23—H23C | 109.5 |
C9—C8—C7 | 110.58 (14) | H23B—C23—H23C | 109.5 |
O2—C8—C15 | 106.73 (13) | O2—C24—O1 | 107.87 (14) |
C9—C8—C15 | 113.04 (14) | O2—C24—H24A | 110.1 |
C7—C8—C15 | 114.22 (14) | O1—C24—H24A | 110.1 |
C8—C9—C14 | 112.02 (14) | O2—C24—H24B | 110.1 |
C8—C9—C10 | 109.23 (13) | O1—C24—H24B | 110.1 |
C14—C9—C10 | 102.55 (14) | H24A—C24—H24B | 108.4 |
C8—C9—H9 | 110.9 | O7—C25—H25A | 109.5 |
C14—C9—H9 | 110.9 | O7—C25—H25B | 109.5 |
C10—C9—H9 | 110.9 | H25A—C25—H25B | 109.5 |
C12—C10—C9 | 103.69 (13) | O7—C25—H25C | 109.5 |
C12—C10—C11 | 116.83 (14) | H25A—C25—H25C | 109.5 |
C9—C10—C11 | 117.78 (14) | H25B—C25—H25C | 109.5 |
C12—C10—H10 | 105.8 | O8—C26—H26A | 109.5 |
C9—C10—H10 | 105.8 | O8—C26—H26B | 109.5 |
C11—C10—H10 | 105.8 | H26A—C26—H26B | 109.5 |
C17—C11—C5 | 98.02 (14) | O8—C26—H26C | 109.5 |
C17—C11—C1 | 114.49 (14) | H26A—C26—H26C | 109.5 |
C5—C11—C1 | 113.19 (14) | H26B—C26—H26C | 109.5 |
C17—C11—C10 | 113.31 (13) | O5—C27—O4 | 123.60 (17) |
C5—C11—C10 | 109.07 (13) | O5—C27—C28 | 125.38 (18) |
C1—C11—C10 | 108.45 (14) | O4—C27—C28 | 111.02 (16) |
C13—C12—C10 | 106.23 (14) | C27—C28—H28A | 109.5 |
C13—C12—H12A | 110.5 | C27—C28—H28B | 109.5 |
C10—C12—H12A | 110.5 | H28A—C28—H28B | 109.5 |
C13—C12—H12B | 110.5 | C27—C28—H28C | 109.5 |
C10—C12—H12B | 110.5 | H28A—C28—H28C | 109.5 |
H12A—C12—H12B | 108.7 | H28B—C28—H28C | 109.5 |
C23—O3—C1—C2 | 78.45 (18) | C2—C1—C11—C10 | −157.24 (15) |
C23—O3—C1—C11 | −153.71 (15) | C12—C10—C11—C17 | 79.16 (18) |
O3—C1—C2—C3 | 160.33 (16) | C9—C10—C11—C17 | −45.3 (2) |
C11—C1—C2—C3 | 37.9 (2) | C12—C10—C11—C5 | −172.79 (14) |
C1—C2—C3—C4 | −52.0 (2) | C9—C10—C11—C5 | 62.72 (18) |
C2—C3—C4—C5 | 66.2 (2) | C12—C10—C11—C1 | −49.12 (18) |
C2—C3—C4—C19 | −56.2 (2) | C9—C10—C11—C1 | −173.60 (14) |
C3—C4—C5—C6 | −177.44 (15) | C9—C10—C12—C13 | 7.26 (17) |
C19—C4—C5—C6 | −52.58 (19) | C11—C10—C12—C13 | −124.09 (15) |
C3—C4—C5—C11 | −63.79 (18) | C10—C12—C13—C14 | −34.41 (16) |
C19—C4—C5—C11 | 61.07 (19) | C10—C12—C13—C16 | 84.09 (17) |
C27—O4—C6—C5 | 153.01 (15) | C25—O7—C14—C9 | −173.13 (14) |
C27—O4—C6—C7 | −88.33 (19) | C25—O7—C14—C13 | 71.10 (19) |
C4—C5—C6—O4 | −130.98 (14) | C8—C9—C14—O7 | −53.00 (18) |
C11—C5—C6—O4 | 112.10 (15) | C10—C9—C14—O7 | −170.00 (13) |
C4—C5—C6—C7 | 103.22 (16) | C8—C9—C14—C13 | 71.91 (16) |
C11—C5—C6—C7 | −13.69 (17) | C10—C9—C14—C13 | −45.09 (15) |
C24—O1—C7—C8 | 28.66 (17) | C12—C13—C14—O7 | 169.43 (15) |
C24—O1—C7—C17 | 148.75 (15) | C16—C13—C14—O7 | 51.7 (2) |
C24—O1—C7—C6 | −94.42 (16) | C12—C13—C14—C9 | 49.40 (15) |
O4—C6—C7—O1 | 92.28 (17) | C16—C13—C14—C9 | −68.33 (17) |
C5—C6—C7—O1 | −146.23 (14) | O2—C8—C15—C16 | −143.22 (15) |
O4—C6—C7—C8 | −23.1 (2) | C9—C8—C15—C16 | −18.1 (2) |
C5—C6—C7—C8 | 98.38 (16) | C7—C8—C15—C16 | 109.45 (17) |
O4—C6—C7—C17 | −142.51 (15) | C26—O8—C16—C13 | −76.69 (18) |
C5—C6—C7—C17 | −21.02 (16) | C26—O8—C16—C15 | 158.94 (14) |
C24—O2—C8—C9 | 160.42 (14) | C12—C13—C16—O8 | 153.62 (14) |
C24—O2—C8—C7 | 43.82 (15) | C14—C13—C16—O8 | −94.99 (17) |
C24—O2—C8—C15 | −74.60 (16) | C12—C13—C16—C15 | −87.59 (18) |
O1—C7—C8—O2 | −44.26 (15) | C14—C13—C16—C15 | 23.8 (2) |
C17—C7—C8—O2 | −168.60 (13) | C8—C15—C16—O8 | 144.03 (15) |
C6—C7—C8—O2 | 76.63 (16) | C8—C15—C16—C13 | 20.9 (2) |
O1—C7—C8—C9 | −162.87 (13) | C21—N1—C17—C11 | 172.51 (14) |
C17—C7—C8—C9 | 72.79 (17) | C19—N1—C17—C11 | −56.6 (2) |
C6—C7—C8—C9 | −41.98 (19) | C21—N1—C17—C7 | −75.16 (19) |
O1—C7—C8—C15 | 68.29 (17) | C19—N1—C17—C7 | 55.8 (2) |
C17—C7—C8—C15 | −56.06 (18) | C5—C11—C17—N1 | 69.33 (16) |
C6—C7—C8—C15 | −170.82 (14) | C1—C11—C17—N1 | −50.74 (19) |
O2—C8—C9—C14 | 92.06 (17) | C10—C11—C17—N1 | −175.83 (14) |
C7—C8—C9—C14 | −158.92 (14) | C5—C11—C17—C7 | −55.31 (14) |
C15—C8—C9—C14 | −29.44 (19) | C1—C11—C17—C7 | −175.38 (14) |
O2—C8—C9—C10 | −155.03 (14) | C10—C11—C17—C7 | 59.53 (16) |
C7—C8—C9—C10 | −46.01 (18) | O1—C7—C17—N1 | 50.6 (2) |
C15—C8—C9—C10 | 83.48 (17) | C8—C7—C17—N1 | 166.10 (14) |
C8—C9—C10—C12 | −96.06 (16) | C6—C7—C17—N1 | −71.36 (17) |
C14—C9—C10—C12 | 22.92 (16) | O1—C7—C17—C11 | 169.57 (14) |
C8—C9—C10—C11 | 34.7 (2) | C8—C7—C17—C11 | −74.93 (15) |
C14—C9—C10—C11 | 153.71 (14) | C6—C7—C17—C11 | 47.61 (15) |
C4—C5—C11—C17 | −73.03 (16) | C21—N1—C19—C4 | 170.95 (16) |
C6—C5—C11—C17 | 43.00 (16) | C17—N1—C19—C4 | 39.3 (2) |
C4—C5—C11—C1 | 48.02 (19) | C3—C4—C19—N1 | 81.9 (2) |
C6—C5—C11—C1 | 164.04 (14) | C5—C4—C19—N1 | −40.3 (2) |
C4—C5—C11—C10 | 168.83 (14) | C17—N1—C21—C22 | −156.45 (16) |
C6—C5—C11—C10 | −75.14 (16) | C19—N1—C21—C22 | 70.6 (2) |
O3—C1—C11—C17 | −47.39 (19) | C8—O2—C24—O1 | −28.12 (17) |
C2—C1—C11—C17 | 75.15 (19) | C7—O1—C24—O2 | −1.39 (18) |
O3—C1—C11—C5 | −158.61 (14) | C6—O4—C27—O5 | −11.0 (3) |
C2—C1—C11—C5 | −36.1 (2) | C6—O4—C27—C28 | 168.90 (15) |
O3—C1—C11—C10 | 80.22 (16) |
Experimental details
Crystal data | |
Chemical formula | C26H39NO7 |
Mr | 477.58 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 133 |
a, b, c (Å) | 8.9444 (16), 14.135 (3), 19.112 (3) |
V (Å3) | 2416.4 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.45 × 0.43 × 0.31 |
Data collection | |
Diffractometer | Rigaku AFC10/Saturn724+ diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 19113, 3122, 3020 |
Rint | 0.034 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.080, 1.00 |
No. of reflections | 3122 |
No. of parameters | 312 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.24, −0.17 |
Computer programs: CrystalClear (Rigaku, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Acknowledgements
This work was supported by the Gangdong Provincial Natural Science Foundation of China (No. 8251064201000001).
References
Rigaku (2002). CrystalClear. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Song, L., Liang, X. X., Chen, D. L., Jian, X. X. & Wang, F. P. (2007). Chem. Pharm. Bull. 55, 918–921. Web of Science CrossRef PubMed CAS Google Scholar
Tashkhodjaev, B. & Sultankhodjaev, M. N. (2009). Acta Cryst. E65, o1543–o1544. Web of Science CSD CrossRef IUCr Journals Google Scholar
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.
The title compound, Anthriscifolcine A. (Song et al., 2007), C26H39NO7, is a norditerpenoid alkaloid and has a lycoctonine carbon skeleton. It contains four six-membered rings (A, B, D and E) and three five-membered rings (C, F and G). Its structure is similar with other lycoctonine-type diterpenoid alkaloids beside the appearance of new five-membered ring, which formed by a methylenedioxyl group at C-7 and C-8. (Tashkhodjaev & Sultankhodjaev, 2009). The rings A, B and E adopt a chair-conformation, while ring D adopts a boat-conformation with C-8, C-9, C-13 and C-16 in the same plane. The five-membered rings C and F adopt envelope conformations with C-9, C-10, C-12 and C-13 of ring C in the same plane, as well as C-5, C-6, C-7 and C-17 of ring F in the same plane. Ring G adopts a significant distorted five-membered ring. Since this type of norditerpenoid alkaloid is a well known skeleton mainly originated from Delphinium and Aconitum Linn with the absolute configuration of C(5) being R, the absolute structure of the chiral carbon centres of the title compound are identified as 1S, 4R, 5R, 6S, 7S, 8R, 9R, 10R, 11S, 13R, 14S, 16S and 17S.
At first, through one-dimensional and two-dimensional NMR analysis, we supposed the title compound that was isolated from Delphinium anthriscifolium var. majus is an isomer of Anthriscifolcines A (Song et al., 2007) for the strong 1H-1H COSY correlation of H-17 /H-5 seemingly indicative of the connection C(17)—C(5). On the other hand, comparison with the 13C NMR data reported by Dr Song, the chemical shift values of C-5, C-13, C-9 and C-10 differ from those of the one we got in D. A. var. majus. But X-ray crystal diffraction indicated that either the plane structure or its chirality was quite the same as Anthriscifolcine A as reported by Dr. Song. After detailed analysis of the HSQC and HMBC spectra, we found that the chemical shift values of C-5 with C-13, as well as C-9 with C-10 were wrongly exchanged in the literature.