organic compounds
15-Methoxy-14,15-dihydroandranginine
aSchool of Pharmacy, Anhui University of Traditional Chinese Medicine, Hefei 230038, People's Republic of China, and bState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China
*Correspondence e-mail: great7701@126.com, hhp760222@126.com
The title polycyclic alkaloid, C22H26N2O3, an indole derivative obtained from Melodinus yunnanensis, comprises three chiral C atoms and crystallizes as a racemate. Its seven-membered heterocyclic ring has a twisted conformation, with the N atom within the plane of the indole moiety and with two adjacent C atoms deviating in opposite directions from its plane by 0.756 (3) (methylene C) and −0.802 (3) Å (methine C). In the crystal, pairs of N—H⋯O hydrogen bonds connect the molecules into centrosymmetric dimers.
Related literature
Indole alkaloid derivatives obtained from Melodinus yunnanensis have been investigated due to their antimalarial and anticancer properties, see: Kanfan et al. (1974). For the structures of related compounds, see: Danieli et al. (1977a) and for applications of similar compounds see: Danieli et al. (1977a,b)
Experimental
Crystal data
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Data collection: CrystalClear (Rigaku, 2008); 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: SHELXTL.
Supporting information
10.1107/S1600536813011604/ld2092sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813011604/ld2092Isup2.hkl
Dried and powdered leaves and twigs of Melodinus yunnanensis (20 kg) were extracted three times with methanol at room temperature and the solvent evaporated in vacuo. The residue was dissolved in 0.3% aqueous hydrochloric acid, and the solution subsequently basified using ammonia water to pH 9–10. The basic solution was partitioned with EtOAc, producing an aqueous and EtOAc phase. The resulting EtOAc fraction (105 g) was collected and then subjected to
over silica gel and eluted with a chloroform-acetone gradient (1/0 to 3/1, v/v) to afford the title compound (500 mg). The product was purified by recrystalliaztion from methanol to give colorless crystals.All hydrogen atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms, with C—H = 0.95-1.00 Å and Uiso(H) = 1.2 Ueq. Positions of hydrogen atoms of methyl groups were rotationally optimized. Atom H of amino group was refined isotropically without restrictions.
Data collection: CrystalClear (Rigaku, 2008); cell
CrystalClear (Rigaku, 2008); data reduction: CrystalClear (Rigaku, 2008); 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: SHELXTL (Sheldrick, 2008).Fig. 1. : The molecular structure of the title molecule(I) with atom labels and 30% probability displacement ellipsoids. | |
Fig. 2. : packing diagram of (I). Hydrogen bonds shown as dashed lines. |
C22H26N2O3 | Z = 2 |
Mr = 366.45 | F(000) = 392 |
Triclinic, P1 | Dx = 1.361 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.914 (3) Å | Cell parameters from 2653 reflections |
b = 11.232 (4) Å | θ = 3.0–27.5° |
c = 11.806 (4) Å | µ = 0.09 mm−1 |
α = 91.079 (6)° | T = 153 K |
β = 100.737 (5)° | Prism, colorless |
γ = 96.317 (6)° | 0.43 × 0.23 × 0.13 mm |
V = 894.5 (6) Å3 |
Rigaku AFC10/Saturn724+ diffractometer | 2868 reflections with I > 2σ(I) |
Radiation source: Rotating Anode | Rint = 0.030 |
Graphite monochromator | θmax = 27.5°, θmin = 3.0° |
Detector resolution: 28.5714 pixels mm-1 | h = −8→8 |
phi and ω scans | k = −14→14 |
8672 measured reflections | l = −14→15 |
4028 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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.089 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0318P)2 + 0.160P] where P = (Fo2 + 2Fc2)/3 |
4028 reflections | (Δ/σ)max = 0.001 |
250 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.19 e Å−3 |
C22H26N2O3 | γ = 96.317 (6)° |
Mr = 366.45 | V = 894.5 (6) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.914 (3) Å | Mo Kα radiation |
b = 11.232 (4) Å | µ = 0.09 mm−1 |
c = 11.806 (4) Å | T = 153 K |
α = 91.079 (6)° | 0.43 × 0.23 × 0.13 mm |
β = 100.737 (5)° |
Rigaku AFC10/Saturn724+ diffractometer | 2868 reflections with I > 2σ(I) |
8672 measured reflections | Rint = 0.030 |
4028 independent reflections |
R[F2 > 2σ(F2)] = 0.041 | 0 restraints |
wR(F2) = 0.089 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.27 e Å−3 |
4028 reflections | Δρmin = −0.19 e Å−3 |
250 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 | 0.60683 (16) | 0.85999 (9) | 0.01190 (9) | 0.0277 (3) | |
O2 | 0.46541 (15) | 0.48350 (9) | 0.27560 (8) | 0.0239 (2) | |
O3 | 0.67895 (15) | 0.46849 (9) | 0.44057 (8) | 0.0244 (2) | |
N1 | 1.00622 (18) | 0.69322 (12) | 0.50300 (10) | 0.0205 (3) | |
N4 | 0.42553 (17) | 0.72717 (10) | 0.24809 (9) | 0.0185 (3) | |
C2 | 0.8300 (2) | 0.71262 (13) | 0.43152 (11) | 0.0175 (3) | |
C3 | 0.3346 (2) | 0.81220 (14) | 0.16762 (12) | 0.0229 (3) | |
H3A | 0.4208 | 0.8895 | 0.1758 | 0.028* | |
H3B | 0.2048 | 0.8269 | 0.1856 | 0.028* | |
C5 | 0.4122 (2) | 0.75869 (13) | 0.36721 (11) | 0.0194 (3) | |
H5A | 0.4215 | 0.6854 | 0.4123 | 0.023* | |
H5B | 0.2793 | 0.7840 | 0.3669 | 0.023* | |
C6 | 0.5671 (2) | 0.85711 (13) | 0.43018 (12) | 0.0215 (3) | |
H6A | 0.5876 | 0.9223 | 0.3769 | 0.026* | |
H6B | 0.5176 | 0.8911 | 0.4959 | 0.026* | |
C7 | 0.7607 (2) | 0.81020 (13) | 0.47397 (12) | 0.0189 (3) | |
C8 | 0.8993 (2) | 0.85448 (13) | 0.57542 (12) | 0.0201 (3) | |
C9 | 0.9085 (2) | 0.95044 (14) | 0.65452 (12) | 0.0246 (3) | |
H9 | 0.8069 | 1.0019 | 0.6457 | 0.030* | |
C10 | 1.0671 (2) | 0.96896 (14) | 0.74531 (13) | 0.0275 (4) | |
H10 | 1.0739 | 1.0336 | 0.7996 | 0.033* | |
C11 | 1.2176 (2) | 0.89460 (14) | 0.75890 (13) | 0.0280 (4) | |
H11 | 1.3261 | 0.9102 | 0.8217 | 0.034* | |
C12 | 1.2125 (2) | 0.79874 (14) | 0.68306 (12) | 0.0262 (4) | |
H12 | 1.3149 | 0.7478 | 0.6929 | 0.031* | |
C13 | 1.0515 (2) | 0.77946 (13) | 0.59135 (12) | 0.0202 (3) | |
C14 | 0.3065 (2) | 0.76125 (15) | 0.04513 (12) | 0.0259 (4) | |
H14A | 0.2199 | 0.6841 | 0.0371 | 0.031* | |
H14B | 0.2414 | 0.8173 | −0.0092 | 0.031* | |
C15 | 0.5046 (2) | 0.74198 (14) | 0.01609 (12) | 0.0235 (3) | |
H15 | 0.4846 | 0.6994 | −0.0611 | 0.028* | |
C16 | 0.7451 (2) | 0.63502 (12) | 0.32228 (11) | 0.0168 (3) | |
C17 | 0.9184 (2) | 0.59056 (13) | 0.27308 (12) | 0.0214 (3) | |
H17A | 1.0106 | 0.6608 | 0.2605 | 0.026* | |
H17B | 0.9920 | 0.5411 | 0.3308 | 0.026* | |
C18 | 0.8514 (2) | 0.51737 (14) | 0.16040 (12) | 0.0242 (3) | |
H18A | 0.9685 | 0.5019 | 0.1276 | 0.029* | |
H18B | 0.7812 | 0.4392 | 0.1750 | 0.029* | |
C19 | 0.7168 (2) | 0.58305 (13) | 0.07633 (12) | 0.0231 (3) | |
H19 | 0.6987 | 0.5606 | −0.0033 | 0.028* | |
C20 | 0.6212 (2) | 0.67091 (13) | 0.10661 (12) | 0.0200 (3) | |
C21 | 0.6292 (2) | 0.71353 (12) | 0.23085 (11) | 0.0177 (3) | |
H21 | 0.7039 | 0.7957 | 0.2404 | 0.021* | |
C22 | 0.7679 (3) | 0.86269 (17) | −0.04602 (15) | 0.0386 (4) | |
H22A | 0.8327 | 0.9450 | −0.0440 | 0.046* | |
H22B | 0.7199 | 0.8342 | −0.1264 | 0.046* | |
H22C | 0.8632 | 0.8107 | −0.0079 | 0.046* | |
C23 | 0.6256 (2) | 0.52135 (12) | 0.35387 (12) | 0.0174 (3) | |
C24 | 0.3361 (2) | 0.38405 (13) | 0.30607 (13) | 0.0250 (3) | |
H24A | 0.2227 | 0.3645 | 0.2427 | 0.030* | |
H24B | 0.2888 | 0.4061 | 0.3760 | 0.030* | |
H24C | 0.4092 | 0.3142 | 0.3202 | 0.030* | |
H1N | 1.078 (2) | 0.6370 (16) | 0.4959 (14) | 0.032 (5)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0297 (6) | 0.0267 (6) | 0.0277 (6) | 0.0001 (5) | 0.0091 (5) | 0.0057 (5) |
O2 | 0.0229 (6) | 0.0209 (6) | 0.0248 (6) | −0.0055 (4) | 0.0007 (5) | 0.0038 (4) |
O3 | 0.0259 (6) | 0.0219 (6) | 0.0249 (6) | 0.0035 (4) | 0.0028 (5) | 0.0062 (4) |
N1 | 0.0180 (7) | 0.0223 (7) | 0.0209 (7) | 0.0044 (5) | 0.0020 (5) | 0.0000 (5) |
N4 | 0.0168 (6) | 0.0219 (7) | 0.0172 (6) | 0.0036 (5) | 0.0031 (5) | 0.0027 (5) |
C2 | 0.0161 (7) | 0.0182 (7) | 0.0174 (7) | −0.0001 (6) | 0.0020 (6) | 0.0035 (6) |
C3 | 0.0193 (8) | 0.0253 (8) | 0.0249 (8) | 0.0061 (6) | 0.0035 (6) | 0.0064 (6) |
C5 | 0.0181 (7) | 0.0198 (8) | 0.0211 (7) | 0.0036 (6) | 0.0052 (6) | 0.0018 (6) |
C6 | 0.0225 (8) | 0.0188 (8) | 0.0232 (8) | 0.0039 (6) | 0.0036 (6) | −0.0007 (6) |
C7 | 0.0196 (7) | 0.0170 (7) | 0.0194 (7) | 0.0000 (6) | 0.0032 (6) | 0.0018 (6) |
C8 | 0.0215 (8) | 0.0205 (8) | 0.0175 (7) | −0.0021 (6) | 0.0039 (6) | 0.0021 (6) |
C9 | 0.0278 (9) | 0.0212 (8) | 0.0243 (8) | −0.0013 (6) | 0.0063 (7) | −0.0001 (6) |
C10 | 0.0338 (9) | 0.0250 (8) | 0.0213 (8) | −0.0062 (7) | 0.0050 (7) | −0.0028 (6) |
C11 | 0.0268 (9) | 0.0341 (9) | 0.0183 (8) | −0.0078 (7) | −0.0016 (7) | 0.0023 (7) |
C12 | 0.0217 (8) | 0.0311 (9) | 0.0244 (8) | 0.0006 (7) | 0.0017 (7) | 0.0042 (7) |
C13 | 0.0203 (8) | 0.0209 (8) | 0.0188 (7) | −0.0016 (6) | 0.0045 (6) | 0.0015 (6) |
C14 | 0.0218 (8) | 0.0328 (9) | 0.0216 (8) | 0.0025 (7) | 0.0003 (6) | 0.0063 (7) |
C15 | 0.0237 (8) | 0.0266 (8) | 0.0190 (7) | −0.0003 (6) | 0.0030 (6) | 0.0014 (6) |
C16 | 0.0164 (7) | 0.0161 (7) | 0.0176 (7) | 0.0021 (6) | 0.0030 (6) | 0.0007 (5) |
C17 | 0.0178 (7) | 0.0238 (8) | 0.0226 (8) | 0.0022 (6) | 0.0038 (6) | 0.0012 (6) |
C18 | 0.0245 (8) | 0.0246 (8) | 0.0250 (8) | 0.0036 (6) | 0.0084 (7) | −0.0023 (6) |
C19 | 0.0245 (8) | 0.0267 (8) | 0.0178 (7) | −0.0008 (6) | 0.0054 (6) | −0.0023 (6) |
C20 | 0.0174 (7) | 0.0223 (8) | 0.0190 (7) | −0.0031 (6) | 0.0035 (6) | 0.0002 (6) |
C21 | 0.0169 (7) | 0.0160 (7) | 0.0199 (7) | 0.0009 (6) | 0.0033 (6) | 0.0021 (6) |
C22 | 0.0347 (10) | 0.0414 (11) | 0.0410 (10) | −0.0059 (8) | 0.0162 (8) | 0.0048 (8) |
C23 | 0.0176 (7) | 0.0160 (7) | 0.0200 (7) | 0.0048 (6) | 0.0061 (6) | −0.0011 (6) |
C24 | 0.0223 (8) | 0.0193 (8) | 0.0332 (9) | −0.0031 (6) | 0.0083 (7) | 0.0009 (6) |
O1—C22 | 1.4091 (19) | C11—C12 | 1.381 (2) |
O1—C15 | 1.4381 (18) | C11—H11 | 0.9500 |
O2—C23 | 1.3274 (17) | C12—C13 | 1.396 (2) |
O2—C24 | 1.4461 (17) | C12—H12 | 0.9500 |
O3—C23 | 1.2109 (16) | C14—C15 | 1.509 (2) |
N1—C13 | 1.3775 (19) | C14—H14A | 0.9900 |
N1—C2 | 1.3881 (18) | C14—H14B | 0.9900 |
N1—H1N | 0.859 (17) | C15—C20 | 1.5105 (19) |
N4—C5 | 1.4657 (18) | C15—H15 | 1.0000 |
N4—C3 | 1.4675 (17) | C16—C23 | 1.5337 (19) |
N4—C21 | 1.4836 (18) | C16—C17 | 1.549 (2) |
C2—C7 | 1.366 (2) | C16—C21 | 1.5665 (18) |
C2—C16 | 1.5265 (19) | C17—C18 | 1.518 (2) |
C3—C14 | 1.515 (2) | C17—H17A | 0.9900 |
C3—H3A | 0.9900 | C17—H17B | 0.9900 |
C3—H3B | 0.9900 | C18—C19 | 1.493 (2) |
C5—C6 | 1.527 (2) | C18—H18A | 0.9900 |
C5—H5A | 0.9900 | C18—H18B | 0.9900 |
C5—H5B | 0.9900 | C19—C20 | 1.325 (2) |
C6—C7 | 1.498 (2) | C19—H19 | 0.9500 |
C6—H6A | 0.9900 | C20—C21 | 1.523 (2) |
C6—H6B | 0.9900 | C21—H21 | 1.0000 |
C7—C8 | 1.430 (2) | C22—H22A | 0.9800 |
C8—C9 | 1.401 (2) | C22—H22B | 0.9800 |
C8—C13 | 1.407 (2) | C22—H22C | 0.9800 |
C9—C10 | 1.378 (2) | C24—H24A | 0.9800 |
C9—H9 | 0.9500 | C24—H24B | 0.9800 |
C10—C11 | 1.393 (2) | C24—H24C | 0.9800 |
C10—H10 | 0.9500 | ||
C22—O1—C15 | 113.67 (12) | C3—C14—H14B | 109.7 |
C23—O2—C24 | 116.57 (11) | H14A—C14—H14B | 108.2 |
C13—N1—C2 | 109.27 (12) | O1—C15—C14 | 105.53 (12) |
C13—N1—H1N | 123.4 (11) | O1—C15—C20 | 110.41 (12) |
C2—N1—H1N | 127.3 (11) | C14—C15—C20 | 111.29 (12) |
C5—N4—C3 | 111.16 (11) | O1—C15—H15 | 109.8 |
C5—N4—C21 | 114.27 (10) | C14—C15—H15 | 109.8 |
C3—N4—C21 | 110.72 (11) | C20—C15—H15 | 109.8 |
C7—C2—N1 | 108.82 (12) | C2—C16—C23 | 109.26 (11) |
C7—C2—C16 | 129.33 (12) | C2—C16—C17 | 108.93 (11) |
N1—C2—C16 | 121.80 (12) | C23—C16—C17 | 105.34 (11) |
N4—C3—C14 | 109.50 (12) | C2—C16—C21 | 108.70 (11) |
N4—C3—H3A | 109.8 | C23—C16—C21 | 115.68 (11) |
C14—C3—H3A | 109.8 | C17—C16—C21 | 108.74 (11) |
N4—C3—H3B | 109.8 | C18—C17—C16 | 113.48 (12) |
C14—C3—H3B | 109.8 | C18—C17—H17A | 108.9 |
H3A—C3—H3B | 108.2 | C16—C17—H17A | 108.9 |
N4—C5—C6 | 116.69 (12) | C18—C17—H17B | 108.9 |
N4—C5—H5A | 108.1 | C16—C17—H17B | 108.9 |
C6—C5—H5A | 108.1 | H17A—C17—H17B | 107.7 |
N4—C5—H5B | 108.1 | C19—C18—C17 | 110.25 (12) |
C6—C5—H5B | 108.1 | C19—C18—H18A | 109.6 |
H5A—C5—H5B | 107.3 | C17—C18—H18A | 109.6 |
C7—C6—C5 | 111.61 (12) | C19—C18—H18B | 109.6 |
C7—C6—H6A | 109.3 | C17—C18—H18B | 109.6 |
C5—C6—H6A | 109.3 | H18A—C18—H18B | 108.1 |
C7—C6—H6B | 109.3 | C20—C19—C18 | 123.64 (13) |
C5—C6—H6B | 109.3 | C20—C19—H19 | 118.2 |
H6A—C6—H6B | 108.0 | C18—C19—H19 | 118.2 |
C2—C7—C8 | 107.44 (12) | C19—C20—C15 | 120.65 (13) |
C2—C7—C6 | 127.05 (13) | C19—C20—C21 | 124.21 (13) |
C8—C7—C6 | 125.29 (13) | C15—C20—C21 | 115.03 (12) |
C9—C8—C13 | 119.11 (13) | N4—C21—C20 | 109.21 (11) |
C9—C8—C7 | 133.72 (14) | N4—C21—C16 | 113.89 (11) |
C13—C8—C7 | 107.18 (13) | C20—C21—C16 | 113.54 (11) |
C10—C9—C8 | 118.96 (15) | N4—C21—H21 | 106.6 |
C10—C9—H9 | 120.5 | C20—C21—H21 | 106.6 |
C8—C9—H9 | 120.5 | C16—C21—H21 | 106.6 |
C9—C10—C11 | 121.12 (15) | O1—C22—H22A | 109.5 |
C9—C10—H10 | 119.4 | O1—C22—H22B | 109.5 |
C11—C10—H10 | 119.4 | H22A—C22—H22B | 109.5 |
C12—C11—C10 | 121.44 (14) | O1—C22—H22C | 109.5 |
C12—C11—H11 | 119.3 | H22A—C22—H22C | 109.5 |
C10—C11—H11 | 119.3 | H22B—C22—H22C | 109.5 |
C11—C12—C13 | 117.53 (15) | O3—C23—O2 | 123.37 (13) |
C11—C12—H12 | 121.2 | O3—C23—C16 | 122.35 (12) |
C13—C12—H12 | 121.2 | O2—C23—C16 | 114.20 (11) |
N1—C13—C12 | 130.87 (14) | O2—C24—H24A | 109.5 |
N1—C13—C8 | 107.29 (12) | O2—C24—H24B | 109.5 |
C12—C13—C8 | 121.84 (14) | H24A—C24—H24B | 109.5 |
C15—C14—C3 | 109.99 (12) | O2—C24—H24C | 109.5 |
C15—C14—H14A | 109.7 | H24A—C24—H24C | 109.5 |
C3—C14—H14A | 109.7 | H24B—C24—H24C | 109.5 |
C15—C14—H14B | 109.7 | ||
C13—N1—C2—C7 | −0.53 (16) | C7—C2—C16—C17 | 146.69 (14) |
C13—N1—C2—C16 | 177.13 (12) | N1—C2—C16—C17 | −30.45 (17) |
C5—N4—C3—C14 | −166.45 (12) | C7—C2—C16—C21 | 28.35 (19) |
C21—N4—C3—C14 | 65.41 (15) | N1—C2—C16—C21 | −148.79 (12) |
C3—N4—C5—C6 | −81.17 (15) | C2—C16—C17—C18 | −177.04 (11) |
C21—N4—C5—C6 | 45.04 (16) | C23—C16—C17—C18 | 65.86 (14) |
N4—C5—C6—C7 | −79.41 (15) | C21—C16—C17—C18 | −58.73 (15) |
N1—C2—C7—C8 | 0.47 (15) | C16—C17—C18—C19 | 50.95 (16) |
C16—C2—C7—C8 | −176.97 (13) | C17—C18—C19—C20 | −19.8 (2) |
N1—C2—C7—C6 | −174.43 (13) | C18—C19—C20—C15 | 173.52 (13) |
C16—C2—C7—C6 | 8.1 (2) | C18—C19—C20—C21 | −2.4 (2) |
C5—C6—C7—C2 | 24.9 (2) | O1—C15—C20—C19 | −106.75 (16) |
C5—C6—C7—C8 | −149.13 (13) | C14—C15—C20—C19 | 136.40 (15) |
C2—C7—C8—C9 | 180.00 (15) | O1—C15—C20—C21 | 69.54 (15) |
C6—C7—C8—C9 | −5.0 (2) | C14—C15—C20—C21 | −47.31 (17) |
C2—C7—C8—C13 | −0.24 (15) | C5—N4—C21—C20 | 175.36 (11) |
C6—C7—C8—C13 | 174.77 (13) | C3—N4—C21—C20 | −58.20 (14) |
C13—C8—C9—C10 | 0.4 (2) | C5—N4—C21—C16 | 47.27 (15) |
C7—C8—C9—C10 | −179.88 (15) | C3—N4—C21—C16 | 173.71 (11) |
C8—C9—C10—C11 | 0.4 (2) | C19—C20—C21—N4 | −134.12 (14) |
C9—C10—C11—C12 | −0.9 (2) | C15—C20—C21—N4 | 49.74 (15) |
C10—C11—C12—C13 | 0.5 (2) | C19—C20—C21—C16 | −5.84 (19) |
C2—N1—C13—C12 | −179.14 (14) | C15—C20—C21—C16 | 178.02 (12) |
C2—N1—C13—C8 | 0.37 (15) | C2—C16—C21—N4 | −81.24 (14) |
C11—C12—C13—N1 | 179.70 (14) | C23—C16—C21—N4 | 42.06 (16) |
C11—C12—C13—C8 | 0.3 (2) | C17—C16—C21—N4 | 160.30 (12) |
C9—C8—C13—N1 | 179.72 (12) | C2—C16—C21—C20 | 152.92 (11) |
C7—C8—C13—N1 | −0.08 (15) | C23—C16—C21—C20 | −83.78 (14) |
C9—C8—C13—C12 | −0.7 (2) | C17—C16—C21—C20 | 34.46 (15) |
C7—C8—C13—C12 | 179.48 (13) | C24—O2—C23—O3 | 9.3 (2) |
N4—C3—C14—C15 | −61.07 (16) | C24—O2—C23—C16 | −173.83 (12) |
C22—O1—C15—C14 | −162.46 (12) | C2—C16—C23—O3 | −39.04 (18) |
C22—O1—C15—C20 | 77.17 (15) | C17—C16—C23—O3 | 77.84 (16) |
C3—C14—C15—O1 | −68.38 (14) | C21—C16—C23—O3 | −162.05 (12) |
C3—C14—C15—C20 | 51.41 (17) | C2—C16—C23—O2 | 144.01 (12) |
C7—C2—C16—C23 | −98.72 (16) | C17—C16—C23—O2 | −99.11 (13) |
N1—C2—C16—C23 | 84.13 (16) | C21—C16—C23—O2 | 20.99 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O3i | 0.859 (17) | 2.187 (16) | 2.9759 (18) | 152.6 (15) |
Symmetry code: (i) −x+2, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C22H26N2O3 |
Mr | 366.45 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 153 |
a, b, c (Å) | 6.914 (3), 11.232 (4), 11.806 (4) |
α, β, γ (°) | 91.079 (6), 100.737 (5), 96.317 (6) |
V (Å3) | 894.5 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.43 × 0.23 × 0.13 |
Data collection | |
Diffractometer | Rigaku AFC10/Saturn724+ diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8672, 4028, 2868 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.089, 1.00 |
No. of reflections | 4028 |
No. of parameters | 250 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.27, −0.19 |
Computer programs: CrystalClear (Rigaku, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O3i | 0.859 (17) | 2.187 (16) | 2.9759 (18) | 152.6 (15) |
Symmetry code: (i) −x+2, −y+1, −z+1. |
Acknowledgements
This work was supported financially by the National Natural Science Foundation of China (2107298, 81001592) and the Natural Science Foundation of th Education Committee of Anhui Province (KJ2010A210).
References
Danieli, B., Lesma, G., Luzzani, M., Passarella, D. & Silvani, A. (1977b). Tetrahedron, 34, 11291–11296. Google Scholar
Danieli, B., Lesma, G., Martinelli, M., Passarella, D. & Silvani, A. (1977a). J. Org. Chem. 19, 6519–6523. Google Scholar
Kanfan, C., Massiot, G., Ahond, A., Das, B. C., Husson, H. P. & Potier, P. (1974). J. Chem. Soc. Chem Commun. pp. 164–165. Google Scholar
Rigaku (2008). 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
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 indole alkaloid derivatives of the title compound, (I), are obtained from Melodinus yunnanensis leaves and twigs by column chromatography. These indole alkaloid derivatives have been investigated due to their antimalarial and anticancer properties (Kanfan et al. 1974). Herewith we present the crystal structure of (I).