1-Hydr-oxy-2-meth-oxy-6-methyl-9,10-anthraquinone from Rennellia elliptica Korth.

The title compound, C(16)H(12)O(4), exists as planar molecules in the solid state (r.m.s. deviation of 0.02 Å in one mol-ecule and 0.07 Å in the second independent mol-ecule comprising the asymmetric unit). In each mol-ecule, the 1-hydr-oxy group forms an intra-molecular hydrogen bond to the adjacent carbonyl O atom.

Related literature

The existence of the title natural product has only been reported for Crucianella maritima L. (El-Lakany et al., 2004 ▶). For another anthraquinone isolated from Rennellia elliptica Korth., see: Ismail et al. (2009 ▶).

Experimental

Crystal data

C16H12O4

M = 268.26

Triclinic,

a = 7.1755 (3) Å

b = 11.9082 (5) Å

c = 14.9683 (7) Å

α = 91.409 (3)°

β = 100.603 (3)°

γ = 105.666 (3)°

V = 1206.73 (9) Å3

Z = 4

Mo Kα radiation

μ = 0.11 mm−1

T = 100 K

0.25 × 0.20 × 0.01 mm

Data collection

Bruker SMART APEX diffractometer

Absorption correction: none

6750 measured reflections

4142 independent reflections

2248 reflections with I > 2σ(I)

R int = 0.051

Refinement

R[F 2 > 2σ(F 2)] = 0.082

wR(F 2) = 0.267

S = 1.08

4142 reflections

367 parameters

H-atom parameters constrained

Δρmax = 0.59 e Å−3

Δρmin = −0.35 e Å−3

Data collection: APEX2 (Bruker, 2008 ▶); cell refinement: SAINT (Bruker, 2008 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: X-SEED (Barbour, 2001 ▶); software used to prepare material for publication: publCIF (Westrip, 2009 ▶).

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809017619/tk2448sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536809017619/tk2448Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

C16H12O4	Z = 4
Mr = 268.26	F(000) = 560
Triclinic, P1	Dx = 1.477 Mg m−3
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 7.1755 (3) Å	Cell parameters from 1159 reflections
b = 11.9082 (5) Å	θ = 2.8–26.8°
c = 14.9683 (7) Å	µ = 0.11 mm−1
α = 91.409 (3)°	T = 100 K
β = 100.603 (3)°	Plate, yellow
γ = 105.666 (3)°	0.25 × 0.20 × 0.01 mm
V = 1206.73 (9) Å3

Bruker SMART APEX diffractometer	2248 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.051
graphite	θmax = 25.0°, θmin = 1.8°
ω scans	h = −8→8
6750 measured reflections	k = −14→13
4142 independent reflections	l = −17→17

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)] = 0.082	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.267	H-atom parameters constrained
S = 1.08	w = 1/[σ2(Fo2) + (0.1397P)2 + 0.3435P] where P = (Fo2 + 2Fc2)/3
4142 reflections	(Δ/σ)max = 0.001
367 parameters	Δρmax = 0.59 e Å−3
0 restraints	Δρmin = −0.35 e Å−3

	x	y	z	Uiso*/Ueq
O1	0.2331 (5)	0.2601 (3)	0.5314 (2)	0.0207 (8)
O2	0.2924 (5)	0.7172 (3)	0.4917 (2)	0.0219 (9)
O3	0.3202 (5)	0.6932 (3)	0.3261 (2)	0.0205 (8)
H3	0.3084	0.7272	0.3737	0.031*
O4	0.3344 (5)	0.5601 (3)	0.1875 (2)	0.0207 (8)
O5	0.9299 (6)	1.2275 (3)	1.0962 (2)	0.0327 (10)
O6	0.5739 (6)	0.7665 (3)	1.0100 (2)	0.0281 (9)
O7	0.5636 (6)	0.7944 (3)	0.8409 (2)	0.0297 (10)
H7	0.5365	0.7587	0.8866	0.045*
O8	0.6524 (5)	0.9285 (3)	0.7122 (2)	0.0279 (9)
C1	0.1303 (8)	0.4169 (5)	0.8389 (3)	0.0247 (13)
H1A	0.2063	0.3608	0.8555	0.037*
H1B	−0.0110	0.3773	0.8316	0.037*
H1C	0.1682	0.4806	0.8872	0.037*
C2	0.1725 (7)	0.4662 (4)	0.7505 (3)	0.0188 (11)
C3	0.1867 (7)	0.3958 (4)	0.6786 (3)	0.0186 (11)
H3A	0.1746	0.3153	0.6858	0.022*
C4	0.2183 (7)	0.4406 (4)	0.5959 (3)	0.0163 (11)
C5	0.2389 (7)	0.3634 (4)	0.5212 (3)	0.0158 (11)
C6	0.2613 (7)	0.4126 (4)	0.4328 (3)	0.0155 (11)
C7	0.2703 (7)	0.3443 (4)	0.3595 (3)	0.0146 (11)
H7A	0.2615	0.2640	0.3662	0.017*
C8	0.2921 (7)	0.3884 (4)	0.2752 (3)	0.0187 (12)
H8	0.2951	0.3385	0.2253	0.022*
C9	0.3092 (7)	0.5067 (4)	0.2654 (3)	0.0179 (11)
C10	0.3034 (7)	0.5792 (4)	0.3390 (3)	0.0160 (11)
C11	0.2798 (7)	0.5340 (4)	0.4234 (3)	0.0153 (11)
C12	0.2727 (7)	0.6111 (4)	0.4991 (3)	0.0176 (11)
C13	0.2400 (7)	0.5601 (4)	0.5865 (3)	0.0143 (11)
C14	0.2299 (7)	0.6314 (4)	0.6590 (3)	0.0184 (11)
H14	0.2462	0.7125	0.6527	0.022*
C15	0.1964 (7)	0.5858 (4)	0.7401 (3)	0.0195 (12)
H15	0.1894	0.6355	0.7893	0.023*
C16	0.3257 (8)	0.4888 (5)	0.1080 (4)	0.0295 (14)
H16A	0.3329	0.5367	0.0558	0.044*
H16B	0.2014	0.4261	0.0959	0.044*
H16C	0.4370	0.4546	0.1179	0.044*
C17	0.8428 (9)	1.0596 (5)	1.4057 (3)	0.0262 (13)
H17A	0.9719	1.1182	1.4193	0.039*
H17B	0.8450	0.9950	1.4449	0.039*
H17C	0.7409	1.0957	1.4171	0.039*
C18	0.7980 (7)	1.0137 (5)	1.3075 (3)	0.0204 (12)
C19	0.8440 (7)	1.0856 (5)	1.2383 (3)	0.0204 (12)
H19	0.9084	1.1664	1.2537	0.024*
C20	0.7990 (7)	1.0432 (4)	1.1479 (3)	0.0167 (11)
C21	0.8479 (8)	1.1216 (5)	1.0761 (3)	0.0221 (12)
C22	0.7990 (7)	1.0732 (4)	0.9807 (3)	0.0206 (12)
C23	0.8403 (8)	1.1438 (5)	0.9115 (3)	0.0230 (12)
H23	0.9019	1.2251	0.9259	0.028*
C24	0.7944 (8)	1.0992 (5)	0.8208 (3)	0.0236 (12)
H24	0.8261	1.1500	0.7745	0.028*
C25	0.7032 (8)	0.9821 (5)	0.7979 (3)	0.0236 (13)
C26	0.6581 (7)	0.9084 (4)	0.8672 (4)	0.0218 (12)
C27	0.7028 (7)	0.9509 (4)	0.9582 (3)	0.0193 (12)
C28	0.6543 (7)	0.8737 (4)	1.0285 (3)	0.0196 (12)
C29	0.7021 (7)	0.9217 (4)	1.1244 (3)	0.0196 (12)
C30	0.6537 (7)	0.8511 (5)	1.1930 (3)	0.0221 (12)
H30	0.5869	0.7705	1.1781	0.027*
C31	0.7009 (8)	0.8955 (4)	1.2837 (3)	0.0224 (12)
H31	0.6666	0.8449	1.3299	0.027*
C32	0.6916 (9)	0.9996 (6)	0.6386 (4)	0.0317 (14)
H32A	0.6461	0.9508	0.5809	0.047*
H32B	0.8338	1.0370	0.6471	0.047*
H32C	0.6216	1.0600	0.6374	0.047*

	U11	U22	U33	U12	U13	U23
O1	0.025 (2)	0.0202 (19)	0.0184 (19)	0.0103 (16)	0.0018 (15)	0.0029 (15)
O2	0.027 (2)	0.0162 (19)	0.023 (2)	0.0089 (16)	0.0025 (16)	0.0009 (15)
O3	0.026 (2)	0.0153 (18)	0.020 (2)	0.0053 (16)	0.0048 (16)	0.0001 (15)
O4	0.023 (2)	0.025 (2)	0.0140 (19)	0.0080 (16)	0.0030 (15)	−0.0005 (15)
O5	0.048 (3)	0.018 (2)	0.025 (2)	−0.0013 (19)	0.0036 (19)	−0.0023 (16)
O6	0.035 (2)	0.018 (2)	0.028 (2)	0.0044 (18)	0.0015 (17)	−0.0022 (16)
O7	0.037 (2)	0.026 (2)	0.024 (2)	0.0076 (19)	0.0049 (18)	−0.0012 (17)
O8	0.033 (2)	0.038 (2)	0.014 (2)	0.0150 (19)	−0.0003 (16)	−0.0025 (17)
C1	0.021 (3)	0.033 (3)	0.024 (3)	0.010 (3)	0.011 (2)	0.007 (2)
C2	0.011 (3)	0.028 (3)	0.017 (3)	0.007 (2)	−0.001 (2)	0.003 (2)
C3	0.012 (3)	0.020 (3)	0.023 (3)	0.005 (2)	0.000 (2)	0.005 (2)
C4	0.006 (2)	0.025 (3)	0.017 (3)	0.005 (2)	−0.002 (2)	−0.004 (2)
C5	0.008 (3)	0.020 (3)	0.019 (3)	0.005 (2)	0.000 (2)	0.000 (2)
C6	0.008 (3)	0.022 (3)	0.015 (3)	0.005 (2)	−0.003 (2)	0.000 (2)
C7	0.010 (3)	0.013 (2)	0.020 (3)	0.002 (2)	0.004 (2)	0.001 (2)
C8	0.016 (3)	0.023 (3)	0.016 (3)	0.008 (2)	−0.001 (2)	−0.005 (2)
C9	0.013 (3)	0.025 (3)	0.016 (3)	0.005 (2)	0.002 (2)	0.004 (2)
C10	0.010 (3)	0.022 (3)	0.015 (3)	0.004 (2)	−0.001 (2)	0.004 (2)
C11	0.011 (3)	0.018 (3)	0.015 (3)	0.007 (2)	−0.004 (2)	−0.001 (2)
C12	0.010 (3)	0.022 (3)	0.019 (3)	0.004 (2)	−0.002 (2)	0.000 (2)
C13	0.007 (2)	0.021 (3)	0.016 (3)	0.007 (2)	0.0013 (19)	0.002 (2)
C14	0.017 (3)	0.019 (3)	0.018 (3)	0.007 (2)	−0.002 (2)	−0.001 (2)
C15	0.015 (3)	0.027 (3)	0.014 (3)	0.006 (2)	−0.003 (2)	−0.005 (2)
C16	0.031 (3)	0.034 (3)	0.020 (3)	0.003 (3)	0.005 (2)	0.000 (2)
C17	0.034 (3)	0.027 (3)	0.018 (3)	0.011 (3)	−0.001 (2)	0.002 (2)
C18	0.017 (3)	0.028 (3)	0.018 (3)	0.013 (2)	0.000 (2)	0.002 (2)
C19	0.020 (3)	0.022 (3)	0.019 (3)	0.009 (2)	−0.003 (2)	−0.002 (2)
C20	0.017 (3)	0.023 (3)	0.014 (3)	0.013 (2)	0.003 (2)	0.000 (2)
C21	0.019 (3)	0.025 (3)	0.024 (3)	0.011 (3)	0.001 (2)	0.004 (2)
C22	0.022 (3)	0.025 (3)	0.017 (3)	0.012 (2)	0.003 (2)	0.004 (2)
C23	0.021 (3)	0.026 (3)	0.021 (3)	0.005 (2)	0.005 (2)	0.000 (2)
C24	0.028 (3)	0.031 (3)	0.013 (3)	0.010 (3)	0.003 (2)	0.005 (2)
C25	0.019 (3)	0.042 (3)	0.015 (3)	0.015 (3)	0.006 (2)	−0.002 (2)
C26	0.015 (3)	0.022 (3)	0.030 (3)	0.010 (2)	0.004 (2)	0.000 (2)
C27	0.013 (3)	0.025 (3)	0.022 (3)	0.010 (2)	0.003 (2)	0.002 (2)
C28	0.009 (3)	0.026 (3)	0.025 (3)	0.008 (2)	0.000 (2)	0.000 (2)
C29	0.014 (3)	0.020 (3)	0.026 (3)	0.010 (2)	−0.001 (2)	−0.002 (2)
C30	0.020 (3)	0.025 (3)	0.027 (3)	0.012 (2)	0.007 (2)	0.007 (2)
C31	0.027 (3)	0.022 (3)	0.022 (3)	0.012 (2)	0.008 (2)	0.010 (2)
C32	0.030 (3)	0.056 (4)	0.013 (3)	0.017 (3)	0.008 (2)	0.005 (3)

O1—C5	1.235 (6)	C14—C15	1.377 (7)
O2—C12	1.243 (6)	C14—H14	0.9500
O3—C10	1.351 (6)	C15—H15	0.9500
O3—H3	0.8400	C16—H16A	0.9800
O4—C9	1.360 (6)	C16—H16B	0.9800
O4—C16	1.426 (6)	C16—H16C	0.9800
O5—C21	1.242 (6)	C17—C18	1.502 (7)
O6—C28	1.251 (6)	C17—H17A	0.9800
O7—C26	1.356 (6)	C17—H17B	0.9800
O7—H7	0.8400	C17—H17C	0.9800
O8—C25	1.359 (6)	C18—C19	1.390 (7)
O8—C32	1.429 (6)	C18—C31	1.396 (7)
C1—C2	1.509 (7)	C19—C20	1.382 (7)
C1—H1A	0.9800	C19—H19	0.9500
C1—H1B	0.9800	C20—C29	1.429 (7)
C1—H1C	0.9800	C20—C21	1.469 (7)
C2—C3	1.383 (7)	C21—C22	1.470 (7)
C2—C15	1.404 (7)	C22—C23	1.375 (7)
C3—C4	1.394 (7)	C22—C27	1.434 (7)
C3—H3A	0.9500	C23—C24	1.392 (7)
C4—C13	1.402 (7)	C23—H23	0.9500
C4—C5	1.483 (7)	C24—C25	1.376 (8)
C5—C6	1.478 (7)	C24—H24	0.9500
C6—C7	1.372 (7)	C25—C26	1.402 (7)
C6—C11	1.428 (7)	C26—C27	1.390 (7)
C7—C8	1.397 (7)	C27—C28	1.443 (7)
C7—H7A	0.9500	C28—C29	1.476 (7)
C8—C9	1.395 (7)	C29—C30	1.377 (7)
C8—H8	0.9500	C30—C31	1.392 (7)
C9—C10	1.397 (7)	C30—H30	0.9500
C10—C11	1.406 (7)	C31—H31	0.9500
C11—C12	1.459 (7)	C32—H32A	0.9800
C12—C13	1.487 (7)	C32—H32B	0.9800
C13—C14	1.386 (7)	C32—H32C	0.9800
C10—O3—H3	109.5	H16A—C16—H16C	109.5
C9—O4—C16	117.9 (4)	H16B—C16—H16C	109.5
C26—O7—H7	109.5	C18—C17—H17A	109.5
C25—O8—C32	117.7 (4)	C18—C17—H17B	109.5
C2—C1—H1A	109.5	H17A—C17—H17B	109.5
C2—C1—H1B	109.5	C18—C17—H17C	109.5
H1A—C1—H1B	109.5	H17A—C17—H17C	109.5
C2—C1—H1C	109.5	H17B—C17—H17C	109.5
H1A—C1—H1C	109.5	C19—C18—C31	118.3 (5)
H1B—C1—H1C	109.5	C19—C18—C17	122.3 (5)
C3—C2—C15	118.9 (5)	C31—C18—C17	119.3 (5)
C3—C2—C1	121.5 (5)	C20—C19—C18	122.1 (5)
C15—C2—C1	119.7 (5)	C20—C19—H19	119.0
C2—C3—C4	121.4 (5)	C18—C19—H19	119.0
C2—C3—H3A	119.3	C19—C20—C29	119.1 (5)
C4—C3—H3A	119.3	C19—C20—C21	120.8 (5)
C3—C4—C13	118.9 (5)	C29—C20—C21	120.0 (4)
C3—C4—C5	119.9 (4)	O5—C21—C22	120.6 (5)
C13—C4—C5	121.1 (4)	O5—C21—C20	120.1 (5)
O1—C5—C6	120.5 (4)	C22—C21—C20	119.2 (5)
O1—C5—C4	121.3 (4)	C23—C22—C27	118.8 (5)
C6—C5—C4	118.2 (4)	C23—C22—C21	121.1 (5)
C7—C6—C11	118.8 (4)	C27—C22—C21	120.1 (4)
C7—C6—C5	121.2 (4)	C22—C23—C24	121.7 (5)
C11—C6—C5	120.0 (4)	C22—C23—H23	119.1
C6—C7—C8	122.5 (4)	C24—C23—H23	119.1
C6—C7—H7A	118.8	C25—C24—C23	120.4 (5)
C8—C7—H7A	118.8	C25—C24—H24	119.8
C9—C8—C7	119.0 (5)	C23—C24—H24	119.8
C9—C8—H8	120.5	O8—C25—C24	125.8 (5)
C7—C8—H8	120.5	O8—C25—C26	115.3 (5)
O4—C9—C10	115.4 (4)	C24—C25—C26	119.0 (5)
O4—C9—C8	124.5 (5)	O7—C26—C27	121.6 (5)
C10—C9—C8	120.1 (4)	O7—C26—C25	116.7 (5)
O3—C10—C9	117.9 (4)	C27—C26—C25	121.7 (5)
O3—C10—C11	121.6 (4)	C26—C27—C22	118.5 (5)
C9—C10—C11	120.5 (4)	C26—C27—C28	120.8 (5)
C10—C11—C6	119.1 (4)	C22—C27—C28	120.7 (5)
C10—C11—C12	119.6 (4)	O6—C28—C27	121.4 (5)
C6—C11—C12	121.3 (4)	O6—C28—C29	119.1 (5)
O2—C12—C11	121.5 (4)	C27—C28—C29	119.5 (5)
O2—C12—C13	120.0 (4)	C30—C29—C20	118.6 (5)
C11—C12—C13	118.5 (4)	C30—C29—C28	121.0 (5)
C14—C13—C4	119.9 (4)	C20—C29—C28	120.3 (5)
C14—C13—C12	119.5 (4)	C29—C30—C31	121.3 (5)
C4—C13—C12	120.6 (4)	C29—C30—H30	119.3
C15—C14—C13	120.6 (5)	C31—C30—H30	119.3
C15—C14—H14	119.7	C30—C31—C18	120.5 (5)
C13—C14—H14	119.7	C30—C31—H31	119.7
C14—C15—C2	120.3 (5)	C18—C31—H31	119.7
C14—C15—H15	119.8	O8—C32—H32A	109.5
C2—C15—H15	119.8	O8—C32—H32B	109.5
O4—C16—H16A	109.5	H32A—C32—H32B	109.5
O4—C16—H16B	109.5	O8—C32—H32C	109.5
H16A—C16—H16B	109.5	H32A—C32—H32C	109.5
O4—C16—H16C	109.5	H32B—C32—H32C	109.5
C15—C2—C3—C4	−1.8 (7)	C31—C18—C19—C20	−0.9 (7)
C1—C2—C3—C4	177.5 (4)	C17—C18—C19—C20	−178.7 (5)
C2—C3—C4—C13	1.3 (7)	C18—C19—C20—C29	0.0 (7)
C2—C3—C4—C5	178.1 (4)	C18—C19—C20—C21	179.4 (4)
C3—C4—C5—O1	−1.6 (7)	C19—C20—C21—O5	−0.3 (7)
C13—C4—C5—O1	175.1 (5)	C29—C20—C21—O5	179.1 (5)
C3—C4—C5—C6	176.7 (4)	C19—C20—C21—C22	179.6 (4)
C13—C4—C5—C6	−6.6 (6)	C29—C20—C21—C22	−1.0 (7)
O1—C5—C6—C7	1.9 (7)	O5—C21—C22—C23	−0.8 (8)
C4—C5—C6—C7	−176.5 (4)	C20—C21—C22—C23	179.3 (4)
O1—C5—C6—C11	−176.2 (4)	O5—C21—C22—C27	−179.5 (5)
C4—C5—C6—C11	5.4 (6)	C20—C21—C22—C27	0.6 (7)
C11—C6—C7—C8	−1.7 (7)	C27—C22—C23—C24	−1.1 (7)
C5—C6—C7—C8	−179.8 (4)	C21—C22—C23—C24	−179.8 (5)
C6—C7—C8—C9	1.3 (7)	C22—C23—C24—C25	0.7 (8)
C16—O4—C9—C10	−175.1 (4)	C32—O8—C25—C24	−1.8 (7)
C16—O4—C9—C8	5.6 (7)	C32—O8—C25—C26	178.9 (4)
C7—C8—C9—O4	178.8 (4)	C23—C24—C25—O8	−179.5 (5)
C7—C8—C9—C10	−0.4 (7)	C23—C24—C25—C26	−0.2 (7)
O4—C9—C10—O3	0.8 (6)	O8—C25—C26—O7	−2.4 (7)
C8—C9—C10—O3	−179.9 (4)	C24—C25—C26—O7	178.3 (4)
O4—C9—C10—C11	−179.4 (4)	O8—C25—C26—C27	179.5 (4)
C8—C9—C10—C11	−0.1 (7)	C24—C25—C26—C27	0.2 (7)
O3—C10—C11—C6	179.5 (4)	O7—C26—C27—C22	−178.6 (4)
C9—C10—C11—C6	−0.2 (7)	C25—C26—C27—C22	−0.5 (7)
O3—C10—C11—C12	0.1 (7)	O7—C26—C27—C28	1.7 (7)
C9—C10—C11—C12	−179.6 (4)	C25—C26—C27—C28	179.7 (4)
C7—C6—C11—C10	1.1 (7)	C23—C22—C27—C26	1.0 (7)
C5—C6—C11—C10	179.2 (4)	C21—C22—C27—C26	179.7 (4)
C7—C6—C11—C12	−179.6 (4)	C23—C22—C27—C28	−179.2 (4)
C5—C6—C11—C12	−1.4 (7)	C21—C22—C27—C28	−0.5 (7)
C10—C11—C12—O2	−2.0 (7)	C26—C27—C28—O6	1.1 (7)
C6—C11—C12—O2	178.7 (4)	C22—C27—C28—O6	−178.6 (5)
C10—C11—C12—C13	177.7 (4)	C26—C27—C28—C29	−179.5 (4)
C6—C11—C12—C13	−1.7 (7)	C22—C27—C28—C29	0.8 (7)
C3—C4—C13—C14	0.0 (7)	C19—C20—C29—C30	1.1 (7)
C5—C4—C13—C14	−176.7 (4)	C21—C20—C29—C30	−178.3 (4)
C3—C4—C13—C12	−179.6 (4)	C19—C20—C29—C28	−179.3 (4)
C5—C4—C13—C12	3.6 (7)	C21—C20—C29—C28	1.3 (7)
O2—C12—C13—C14	0.6 (7)	O6—C28—C29—C30	−2.1 (7)
C11—C12—C13—C14	−179.1 (4)	C27—C28—C29—C30	178.4 (4)
O2—C12—C13—C4	−179.7 (4)	O6—C28—C29—C20	178.3 (4)
C11—C12—C13—C4	0.6 (6)	C27—C28—C29—C20	−1.2 (7)
C4—C13—C14—C15	−0.8 (7)	C20—C29—C30—C31	−1.3 (7)
C12—C13—C14—C15	178.9 (4)	C28—C29—C30—C31	179.1 (4)
C13—C14—C15—C2	0.2 (7)	C29—C30—C31—C18	0.4 (7)
C3—C2—C15—C14	1.1 (7)	C19—C18—C31—C30	0.7 (7)
C1—C2—C15—C14	−178.3 (4)	C17—C18—C31—C30	178.6 (5)

D—H···A	D—H	H···A	D···A	D—H···A
O3—H3···O2	0.84	1.80	2.538 (4)	147
O7—H7···O6	0.84	1.81	2.551 (5)	146

Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3⋯O2	0.84	1.80	2.538 (4)	147
O7—H7⋯O6	0.84	1.81	2.551 (5)	146