4,4,6a,6b,11,12,14b-Heptamethyl-16-oxo-1,2,3,4,4a,5,6,6a,6b,7,8,9,10,11,12,12a,14a,14b-octa­deca­hydro-12b,8a-(epoxy­methano)­picen-3-yl acetate

Nisar, M.; Ali, S.; Tahir, M.N.; Ahmad, B.; Hameed, S.

doi:10.1107/S1600536813007253

organic compounds

CRYSTALLOGRAPHIC
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ISSN: 2056-9890

Volume 69| Part 4| April 2013| Page o573

doi:10.1107/S1600536813007253

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4,4,6a,6b,11,12,14b-Heptamethyl-16-oxo-1,2,3,4,4a,5,6,6a,6b,7,8,9,10,11,12,12a,14a,14b-octadecahydro-12b,8a-(epoxymethano)picen-3-yl acetate

Mohammad Nisar,^a Sajid Ali,^a M. Nawaz Tahir,^b ^* Bashir Ahmad ^c and Shahid Hameed ^d

^aUniversity of Peshawar, Institute of Chemical Sciences, Peshawar 25120, Pakistan, ^bUniversity of Sargodha, Department of Physics, Sargodha, Pakistan, ^cUniversity of Peshawar, Centre of Biotechnology and Microbiology, Peshawar 25120, Pakistan, and ^dQuaid-i-Azam University, Department of Chemistry, Islamabad, Pakistan
^*Correspondence e-mail: dmntahir_uos@yahoo.com

(Received 13 March 2013; accepted 16 March 2013; online 23 March 2013)

The title compound, C₃₂H₄₈O₄, which was extracted from the bark of Rhododendron arboreum, consists of five fused rings to which an acetate and seven methyl groups are attached. The A, D and E rings adopt chair conformations, the B ring is in a distorted chair and the C ring is in a half-chair conformation. The five-membered ring formed by the lactone group, which bridges from the A/B to the B/C ring junctions, is an approximate envelope with the C atom of the methyne group as the flap [displacement from the other four atoms = 0.753 (2) Å]. There are no identified directional interactions in the crystal structure.

Related literature

For a related crystal structure, see: El-Seedi et al. (1994 ). For puckering parameters, see: Cremer & Pople (1975).

Experimental

Crystal data

C₃₂H₄₈O₄
M_r = 496.70
Monoclinic, P 2₁
a = 13.7309 (8) Å
b = 6.9177 (4) Å
c = 14.8539 (9) Å
β = 90.943 (2)°
V = 1410.73 (14) Å³
Z = 2
Mo Kα radiation
μ = 0.08 mm⁻¹
T = 296 K
0.35 × 0.20 × 0.18 mm

Data collection

Bruker Kappa APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2005 ) T_min = 0.975, T_max = 0.987
11401 measured reflections
2856 independent reflections
2261 reflections with I > 2σ(I)
R_int = 0.029

Refinement

R[F² > 2σ(F²)] = 0.041
wR(F²) = 0.101
S = 1.03
2856 reflections
333 parameters
1 restraint
H-atom parameters constrained
Δρ_max = 0.15 e Å⁻³
Δρ_min = −0.15 e Å⁻³

Data collection: APEX2 (Bruker, 2009 ); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012 ) and PLATON (Spek, 2009 ); software used to prepare material for publication: WinGX (Farrugia, 2012) and PLATON.

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536813007253/hb7057sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536813007253/hb7057Isup2.hkl

Supporting information file. DOI: 10.1107/S1600536813007253/hb7057Isup3.cml

checkCIF report

Comment top

The title compound (I), (Fig. 1) has been extracted from the bark of Rhododendron arboreum collected in February 2011 from Butal, Hazar division, Pakistan.

The crystal structures of 3β,13β-13,28-Epoxy-3-acetoxy-11oleanene (El-Seedi et al., 1994) extracted from the bark of Minquartia guianensis has been published which is related to (I).

In (I), five six-membered rings A (C2–C7), B (C5/C6/C9—C12), C (C9/C10/C15—C18), D (C15/C16/C20—C23) and E (C22/C23/C25—C28) are fused to each other. Seven methyl groups are attached at different positions. A carboxylate group is fused over ring A & B. One acetate group is also attached at the terminal ring E. The rings A, B, C, D and E are confirmed by different puckering parameters (Cremer & Pople, 1975). The puckering amplitude Q for rings A, B, C, D and E have values of 0.558 (3), 0.623 (3), 0.557 (3), 0.574 (3) & 0.561 (3) Å, θ for rings A, B, C, D and E have values of 3.6 (3), 164.3 (3), 49.3 (3), 172.3 (3) & 2.7 (3)°, ϕ for rings A, B, C, D and E have values of 323 (5), 230.3 (9), 102.6 (4), 359 (2) & 184 (7)°, respectively. The acetate group F (O3/O4/C31/C32) is planar with r. m. s. deviation of 0.0021 Å. It is oriented at a dihedral angle of 72.36 (0.15) ° with the plane of (C22/C25/C26/C28).

Related literature top

For a related crystal structure, see: El-Seedi et al. (1994). For puckering parameters, see: Cremer & Pople (1975).

Experimental top

The dried and crushed barks of Rhododendron arboreum (5 kg) were subjected to cold extraction with methanol (MeOH). The MeOH extract (0.3 kg) was suspended in water and successively partitioned with n-hexane, CHCl₃, EtOAc and butanol (BuOH). The CHCl₃ fraction (15 g) was subjected to column chromatography on silica gel. The column was first eluted with n-hexane: CHCL₃ (100:0 → 0:100) as solvent system. A total of 23 fractions, SF-1 to SF-23 were obtained based on TLC profiles. On further purification of fraction SF18 through pencil column colourless needles of (I) were obtained. Yield: 10 mg.

Computing details top

Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 2012) and PLATON (Spek, 2009).

Figures top

Fig. 1. View of the title compound with displacement ellipsoids drawn at the 50% probability level.

4,4,6a,6b,11,12,14b-Heptamethyl-16-oxo-1,2,3,4,4a,5,6,6a,6b,7,8,9,10,11,12,12a,14a,14b-octadecahydro-12b,8a-(epoxymethano)picen-3-yl acetate top

Crystal data top

C₃₂H₄₈O₄	F(000) = 544
M_r = 496.70	D_x = 1.169 Mg m⁻³
Monoclinic, P2₁	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2yb	Cell parameters from 2261 reflections
a = 13.7309 (8) Å	θ = 2.7–25.3°
b = 6.9177 (4) Å	µ = 0.08 mm⁻¹
c = 14.8539 (9) Å	T = 296 K
β = 90.943 (2)°	Needle, colorless
V = 1410.73 (14) Å³	0.35 × 0.20 × 0.18 mm
Z = 2

Data collection top

Bruker Kappa APEXII CCD diffractometer	2856 independent reflections
Radiation source: fine-focus sealed tube	2261 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.029
Detector resolution: 8.10 pixels mm^-1	θ_max = 25.5°, θ_min = 2.7°
ω scans	h = −15→16
Absorption correction: multi-scan (SADABS; Bruker, 2005)	k = −8→5
T_min = 0.975, T_max = 0.987	l = −17→17
11401 measured reflections

Refinement top

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) = 0.101	H-atom parameters constrained
S = 1.03	w = 1/[σ²(F_o²) + (0.0488P)² + 0.1608P] where P = (F_o² + 2F_c²)/3
2856 reflections	(Δ/σ)_max < 0.001
333 parameters	Δρ_max = 0.15 e Å⁻³
1 restraint	Δρ_min = −0.15 e Å⁻³

Crystal data top

C₃₂H₄₈O₄	V = 1410.73 (14) Å³
M_r = 496.70	Z = 2
Monoclinic, P2₁	Mo Kα radiation
a = 13.7309 (8) Å	µ = 0.08 mm⁻¹
b = 6.9177 (4) Å	T = 296 K
c = 14.8539 (9) Å	0.35 × 0.20 × 0.18 mm
β = 90.943 (2)°

Data collection top

Bruker Kappa APEXII CCD diffractometer	2856 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2005)	2261 reflections with I > 2σ(I)
T_min = 0.975, T_max = 0.987	R_int = 0.029
11401 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.041	1 restraint
wR(F²) = 0.101	H-atom parameters constrained
S = 1.03	Δρ_max = 0.15 e Å⁻³
2856 reflections	Δρ_min = −0.15 e Å⁻³
333 parameters

Special details top

Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
O1	0.32780 (13)	0.9669 (3)	0.29373 (12)	0.0464 (6)
O2	0.45050 (16)	1.0954 (3)	0.21754 (15)	0.0664 (8)
O3	0.05842 (19)	0.5882 (4)	0.84926 (15)	0.0817 (10)
O4	0.0088 (2)	0.2830 (5)	0.83569 (19)	0.1098 (14)
C1	0.2961 (3)	0.2682 (6)	0.0396 (2)	0.0783 (14)
C2	0.3127 (2)	0.4699 (5)	0.08018 (18)	0.0571 (10)
C3	0.4184 (2)	0.5303 (5)	0.0680 (2)	0.0641 (11)
C4	0.4413 (2)	0.7319 (5)	0.1039 (2)	0.0610 (11)
C5	0.40994 (19)	0.7503 (4)	0.20146 (18)	0.0450 (9)
C6	0.30424 (18)	0.6838 (4)	0.21412 (16)	0.0407 (8)
C7	0.2829 (2)	0.4786 (4)	0.18059 (18)	0.0478 (9)
C8	0.1764 (2)	0.4236 (6)	0.1928 (2)	0.0706 (12)
C9	0.28636 (17)	0.7675 (4)	0.30996 (16)	0.0374 (8)
C10	0.34669 (17)	0.6733 (4)	0.38810 (16)	0.0349 (8)
C11	0.45584 (18)	0.6933 (4)	0.36732 (17)	0.0457 (9)
C12	0.47923 (19)	0.6465 (4)	0.26904 (18)	0.0495 (10)
C13	0.4016 (2)	0.9561 (4)	0.23483 (18)	0.0488 (9)
C14	0.3239 (2)	0.4550 (4)	0.39160 (17)	0.0442 (8)
C15	0.31827 (17)	0.7735 (4)	0.48074 (16)	0.0357 (8)
C16	0.20947 (17)	0.7223 (3)	0.49750 (16)	0.0383 (8)
C17	0.14878 (18)	0.7802 (5)	0.41643 (18)	0.0462 (9)
C18	0.18247 (18)	0.7978 (4)	0.33399 (18)	0.0463 (9)
C19	0.3337 (2)	0.9951 (3)	0.47758 (18)	0.0441 (9)
C20	0.38119 (18)	0.6971 (4)	0.56019 (17)	0.0454 (9)
C21	0.34095 (18)	0.7519 (5)	0.65228 (17)	0.0495 (10)
C22	0.23627 (19)	0.6818 (4)	0.66293 (18)	0.0456 (9)
C23	0.16692 (18)	0.7774 (4)	0.59105 (18)	0.0423 (8)
C24	0.1520 (2)	0.9982 (4)	0.6012 (2)	0.0558 (11)
C25	0.0663 (2)	0.6807 (5)	0.59872 (19)	0.0583 (10)
C26	0.0281 (2)	0.6833 (6)	0.6953 (2)	0.0675 (11)
C27	0.0994 (3)	0.5862 (5)	0.7590 (2)	0.0655 (11)
C28	0.2011 (2)	0.6766 (5)	0.76271 (19)	0.0574 (11)
C29	0.2007 (3)	0.8748 (6)	0.8091 (2)	0.0770 (16)
C30	0.2685 (3)	0.5399 (7)	0.8174 (2)	0.0900 (16)
C31	0.0121 (3)	0.4303 (7)	0.8771 (2)	0.0742 (14)
C32	−0.0336 (3)	0.4631 (8)	0.9671 (2)	0.1036 (19)
H1A	0.31578	0.26819	−0.02216	0.1174*
H1B	0.22830	0.23553	0.04261	0.1174*
H1C	0.33388	0.17490	0.07283	0.1174*
H2	0.27151	0.56130	0.04654	0.0684*
H3A	0.43318	0.52603	0.00442	0.0769*
H3B	0.46032	0.43764	0.09863	0.0769*
H4A	0.51065	0.75615	0.10003	0.0733*
H4B	0.40742	0.82764	0.06737	0.0733*
H6	0.26583	0.76721	0.17375	0.0488*
H7	0.32370	0.38788	0.21507	0.0573*
H8A	0.13590	0.50437	0.15519	0.1061*
H8B	0.15916	0.44118	0.25459	0.1061*
H8C	0.16697	0.29077	0.17610	0.1061*
H11A	0.47650	0.82443	0.38058	0.0548*
H11B	0.49275	0.60705	0.40647	0.0548*
H12A	0.47438	0.50797	0.25986	0.0595*
H12B	0.54579	0.68467	0.25724	0.0595*
H14A	0.36235	0.38834	0.34798	0.0662*
H14B	0.25605	0.43455	0.37834	0.0662*
H14C	0.33927	0.40616	0.45065	0.0662*
H16	0.20795	0.58066	0.49676	0.0460*
H17	0.08305	0.80536	0.42502	0.0554*
H18	0.13867	0.83109	0.28815	0.0555*
H19A	0.33521	1.04567	0.53778	0.0661*
H19B	0.28112	1.05391	0.44409	0.0661*
H19C	0.39420	1.02319	0.44892	0.0661*
H20A	0.38526	0.55736	0.55608	0.0545*
H20B	0.44664	0.74832	0.55529	0.0545*
H21A	0.38173	0.69537	0.69928	0.0594*
H21B	0.34304	0.89125	0.65922	0.0594*
H22	0.23849	0.54547	0.64517	0.0547*
H24A	0.13717	1.05359	0.54333	0.0837*
H24B	0.21051	1.05555	0.62533	0.0837*
H24C	0.09918	1.02218	0.64120	0.0837*
H25A	0.02015	0.74730	0.55946	0.0699*
H25B	0.07070	0.54785	0.57835	0.0699*
H26A	0.01795	0.81592	0.71418	0.0809*
H26B	−0.03406	0.61680	0.69708	0.0809*
H27	0.10620	0.45116	0.74024	0.0784*
H29A	0.14881	0.95220	0.78418	0.1155*
H29B	0.26180	0.93833	0.79966	0.1155*
H29C	0.19106	0.85794	0.87249	0.1155*
H30A	0.24031	0.51464	0.87495	0.1345*
H30B	0.33106	0.59959	0.82595	0.1345*
H30C	0.27590	0.42051	0.78530	0.1345*
H32A	−0.06580	0.34703	0.98592	0.1552*
H32B	−0.08018	0.56618	0.96236	0.1552*
H32C	0.01602	0.49687	1.01063	0.1552*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
O1	0.0564 (11)	0.0303 (9)	0.0526 (11)	0.0062 (9)	0.0044 (9)	0.0073 (8)
O2	0.0744 (15)	0.0429 (12)	0.0820 (16)	−0.0120 (11)	0.0050 (12)	0.0171 (11)
O3	0.112 (2)	0.0720 (17)	0.0624 (14)	−0.0162 (15)	0.0373 (13)	−0.0018 (12)
O4	0.150 (3)	0.095 (2)	0.085 (2)	−0.049 (2)	0.0222 (18)	0.0005 (19)
C1	0.109 (3)	0.069 (2)	0.057 (2)	0.005 (2)	0.0036 (19)	−0.0152 (18)
C2	0.074 (2)	0.0529 (17)	0.0445 (16)	0.0090 (17)	0.0024 (14)	0.0008 (14)
C3	0.078 (2)	0.061 (2)	0.0540 (19)	0.0142 (18)	0.0183 (16)	0.0011 (15)
C4	0.063 (2)	0.062 (2)	0.0585 (19)	0.0050 (16)	0.0183 (15)	0.0111 (15)
C5	0.0459 (16)	0.0402 (15)	0.0493 (16)	0.0042 (13)	0.0102 (12)	0.0075 (12)
C6	0.0441 (15)	0.0396 (14)	0.0383 (14)	0.0060 (12)	0.0017 (11)	0.0068 (12)
C7	0.0563 (17)	0.0407 (15)	0.0463 (15)	−0.0001 (14)	0.0018 (12)	−0.0007 (12)
C8	0.066 (2)	0.078 (2)	0.068 (2)	−0.0183 (18)	0.0033 (16)	−0.0197 (18)
C9	0.0390 (14)	0.0291 (12)	0.0440 (15)	0.0047 (11)	−0.0012 (11)	0.0036 (11)
C10	0.0314 (13)	0.0286 (12)	0.0445 (14)	0.0015 (11)	−0.0006 (11)	0.0063 (11)
C11	0.0377 (15)	0.0431 (15)	0.0562 (17)	0.0047 (12)	−0.0002 (12)	0.0073 (13)
C12	0.0388 (15)	0.0467 (17)	0.0634 (18)	0.0045 (13)	0.0098 (13)	0.0090 (14)
C13	0.0556 (18)	0.0392 (15)	0.0516 (16)	0.0006 (14)	0.0035 (14)	0.0118 (13)
C14	0.0547 (16)	0.0307 (13)	0.0472 (15)	0.0032 (13)	0.0022 (12)	0.0043 (12)
C15	0.0351 (13)	0.0267 (12)	0.0451 (14)	0.0007 (11)	−0.0040 (11)	0.0042 (11)
C16	0.0363 (14)	0.0322 (14)	0.0463 (15)	−0.0022 (10)	−0.0036 (11)	0.0001 (11)
C17	0.0311 (13)	0.0579 (17)	0.0494 (17)	0.0049 (14)	−0.0014 (12)	−0.0036 (14)
C18	0.0381 (14)	0.0522 (17)	0.0482 (17)	0.0115 (13)	−0.0092 (12)	−0.0003 (13)
C19	0.0490 (16)	0.0301 (14)	0.0532 (16)	−0.0053 (12)	−0.0006 (12)	0.0002 (12)
C20	0.0398 (15)	0.0444 (15)	0.0518 (16)	−0.0001 (12)	−0.0077 (12)	0.0063 (13)
C21	0.0487 (16)	0.0545 (18)	0.0449 (16)	−0.0017 (14)	−0.0116 (12)	0.0038 (13)
C22	0.0516 (16)	0.0370 (14)	0.0482 (15)	−0.0017 (13)	−0.0006 (12)	0.0019 (12)
C23	0.0407 (15)	0.0401 (14)	0.0460 (15)	−0.0014 (13)	0.0016 (12)	−0.0018 (12)
C24	0.0584 (18)	0.0503 (19)	0.0589 (18)	0.0133 (15)	0.0042 (14)	−0.0026 (14)
C25	0.0456 (16)	0.075 (2)	0.0546 (18)	−0.0080 (16)	0.0097 (13)	−0.0088 (16)
C26	0.0585 (19)	0.083 (2)	0.0615 (19)	−0.0168 (19)	0.0159 (16)	−0.0089 (18)
C27	0.086 (2)	0.058 (2)	0.0533 (19)	−0.0095 (19)	0.0227 (17)	−0.0043 (16)
C28	0.070 (2)	0.0596 (19)	0.0428 (16)	−0.0005 (17)	0.0050 (14)	0.0030 (15)
C29	0.095 (3)	0.080 (3)	0.056 (2)	−0.015 (2)	0.0053 (18)	−0.0143 (19)
C30	0.105 (3)	0.108 (3)	0.057 (2)	0.019 (3)	0.0047 (19)	0.027 (2)
C31	0.080 (2)	0.085 (3)	0.058 (2)	−0.010 (2)	0.0121 (18)	0.015 (2)
C32	0.119 (3)	0.118 (4)	0.075 (3)	−0.002 (3)	0.038 (2)	0.023 (3)

Geometric parameters (Å, º) top

O1—C9	1.513 (3)	C3—H3A	0.9700
O1—C13	1.352 (3)	C3—H3B	0.9700
O2—C13	1.205 (3)	C4—H4A	0.9700
O3—C27	1.463 (4)	C4—H4B	0.9700
O3—C31	1.333 (5)	C6—H6	0.9800
O4—C31	1.191 (6)	C7—H7	0.9800
C1—C2	1.536 (5)	C8—H8A	0.9600
C2—C3	1.524 (4)	C8—H8B	0.9600
C2—C7	1.554 (4)	C8—H8C	0.9600
C3—C4	1.524 (5)	C11—H11A	0.9700
C4—C5	1.524 (4)	C11—H11B	0.9700
C5—C6	1.537 (4)	C12—H12A	0.9700
C5—C12	1.548 (4)	C12—H12B	0.9700
C5—C13	1.512 (4)	C14—H14A	0.9600
C6—C7	1.531 (4)	C14—H14B	0.9600
C6—C9	1.560 (3)	C14—H14C	0.9600
C7—C8	1.525 (4)	C16—H16	0.9800
C9—C10	1.558 (3)	C17—H17	0.9300
C9—C18	1.491 (3)	C18—H18	0.9300
C10—C11	1.541 (3)	C19—H19A	0.9600
C10—C14	1.543 (4)	C19—H19B	0.9600
C10—C15	1.595 (3)	C19—H19C	0.9600
C11—C12	1.534 (4)	C20—H20A	0.9700
C15—C16	1.559 (3)	C20—H20B	0.9700
C15—C19	1.548 (3)	C21—H21A	0.9700
C15—C20	1.544 (4)	C21—H21B	0.9700
C16—C17	1.507 (4)	C22—H22	0.9800
C16—C23	1.563 (4)	C24—H24A	0.9600
C17—C18	1.322 (4)	C24—H24B	0.9600
C20—C21	1.531 (4)	C24—H24C	0.9600
C21—C22	1.528 (4)	C25—H25A	0.9700
C22—C23	1.565 (4)	C25—H25B	0.9700
C22—C28	1.567 (4)	C26—H26A	0.9700
C23—C24	1.549 (4)	C26—H26B	0.9700
C23—C25	1.541 (4)	C27—H27	0.9800
C25—C26	1.536 (4)	C29—H29A	0.9600
C26—C27	1.508 (5)	C29—H29B	0.9600
C27—C28	1.530 (5)	C29—H29C	0.9600
C28—C29	1.535 (5)	C30—H30A	0.9600
C28—C30	1.545 (5)	C30—H30B	0.9600
C31—C32	1.503 (5)	C30—H30C	0.9600
C1—H1A	0.9600	C32—H32A	0.9600
C1—H1B	0.9600	C32—H32B	0.9600
C1—H1C	0.9600	C32—H32C	0.9600
C2—H2	0.9800

C9—O1—C13	109.9 (2)	C5—C6—H6	104.00
C27—O3—C31	118.0 (3)	C7—C6—H6	104.00
C1—C2—C3	109.8 (3)	C9—C6—H6	104.00
C1—C2—C7	111.9 (3)	C2—C7—H7	109.00
C3—C2—C7	111.7 (2)	C6—C7—H7	109.00
C2—C3—C4	113.6 (3)	C8—C7—H7	109.00
C3—C4—C5	110.4 (2)	C7—C8—H8A	109.00
C4—C5—C6	111.9 (2)	C7—C8—H8B	110.00
C4—C5—C12	113.4 (2)	C7—C8—H8C	109.00
C4—C5—C13	114.5 (2)	H8A—C8—H8B	109.00
C6—C5—C12	110.7 (2)	H8A—C8—H8C	109.00
C6—C5—C13	99.5 (2)	H8B—C8—H8C	110.00
C12—C5—C13	105.9 (2)	C10—C11—H11A	109.00
C5—C6—C7	114.4 (2)	C10—C11—H11B	109.00
C5—C6—C9	99.4 (2)	C12—C11—H11A	109.00
C7—C6—C9	127.5 (2)	C12—C11—H11B	109.00
C2—C7—C6	107.2 (2)	H11A—C11—H11B	108.00
C2—C7—C8	111.9 (2)	C5—C12—H12A	109.00
C6—C7—C8	111.8 (2)	C5—C12—H12B	109.00
O1—C9—C6	97.34 (18)	C11—C12—H12A	109.00
O1—C9—C10	107.66 (19)	C11—C12—H12B	109.00
O1—C9—C18	105.9 (2)	H12A—C12—H12B	108.00
C6—C9—C10	115.8 (2)	C10—C14—H14A	109.00
C6—C9—C18	115.9 (2)	C10—C14—H14B	110.00
C10—C9—C18	112.3 (2)	C10—C14—H14C	109.00
C9—C10—C11	108.7 (2)	H14A—C14—H14B	109.00
C9—C10—C14	109.2 (2)	H14A—C14—H14C	109.00
C9—C10—C15	109.1 (2)	H14B—C14—H14C	109.00
C11—C10—C14	107.0 (2)	C15—C16—H16	104.00
C11—C10—C15	112.7 (2)	C17—C16—H16	104.00
C14—C10—C15	110.1 (2)	C23—C16—H16	104.00
C10—C11—C12	113.0 (2)	C16—C17—H17	118.00
C5—C12—C11	112.5 (2)	C18—C17—H17	118.00
O1—C13—O2	121.4 (3)	C9—C18—H18	118.00
O1—C13—C5	109.0 (2)	C17—C18—H18	118.00
O2—C13—C5	129.6 (3)	C15—C19—H19A	109.00
C10—C15—C16	106.72 (19)	C15—C19—H19B	109.00
C10—C15—C19	111.6 (2)	C15—C19—H19C	110.00
C10—C15—C20	111.6 (2)	H19A—C19—H19B	109.00
C16—C15—C19	111.2 (2)	H19A—C19—H19C	110.00
C16—C15—C20	109.0 (2)	H19B—C19—H19C	109.00
C19—C15—C20	106.7 (2)	C15—C20—H20A	109.00
C15—C16—C17	109.3 (2)	C15—C20—H20B	109.00
C15—C16—C23	117.36 (19)	C21—C20—H20A	109.00
C17—C16—C23	115.8 (2)	C21—C20—H20B	109.00
C16—C17—C18	124.6 (2)	H20A—C20—H20B	108.00
C9—C18—C17	124.0 (2)	C20—C21—H21A	109.00
C15—C20—C21	113.1 (2)	C20—C21—H21B	109.00
C20—C21—C22	111.6 (2)	C22—C21—H21A	109.00
C21—C22—C23	111.0 (2)	C22—C21—H21B	109.00
C21—C22—C28	114.2 (2)	H21A—C21—H21B	108.00
C23—C22—C28	117.5 (2)	C21—C22—H22	104.00
C16—C23—C22	105.7 (2)	C23—C22—H22	104.00
C16—C23—C24	112.3 (2)	C28—C22—H22	104.00
C16—C23—C25	108.0 (2)	C23—C24—H24A	109.00
C22—C23—C24	115.5 (2)	C23—C24—H24B	109.00
C22—C23—C25	107.6 (2)	C23—C24—H24C	109.00
C24—C23—C25	107.5 (2)	H24A—C24—H24B	109.00
C23—C25—C26	112.6 (2)	H24A—C24—H24C	110.00
C25—C26—C27	110.7 (3)	H24B—C24—H24C	109.00
O3—C27—C26	108.4 (3)	C23—C25—H25A	109.00
O3—C27—C28	109.1 (3)	C23—C25—H25B	109.00
C26—C27—C28	115.0 (3)	C26—C25—H25A	109.00
C22—C28—C27	105.7 (2)	C26—C25—H25B	109.00
C22—C28—C29	114.1 (3)	H25A—C25—H25B	108.00
C22—C28—C30	108.7 (2)	C25—C26—H26A	110.00
C27—C28—C29	111.8 (3)	C25—C26—H26B	110.00
C27—C28—C30	107.9 (3)	C27—C26—H26A	110.00
C29—C28—C30	108.5 (3)	C27—C26—H26B	110.00
O3—C31—O4	123.7 (3)	H26A—C26—H26B	108.00
O3—C31—C32	111.1 (4)	O3—C27—H27	108.00
O4—C31—C32	125.1 (4)	C26—C27—H27	108.00
C2—C1—H1A	109.00	C28—C27—H27	108.00
C2—C1—H1B	109.00	C28—C29—H29A	109.00
C2—C1—H1C	109.00	C28—C29—H29B	110.00
H1A—C1—H1B	109.00	C28—C29—H29C	109.00
H1A—C1—H1C	109.00	H29A—C29—H29B	109.00
H1B—C1—H1C	110.00	H29A—C29—H29C	109.00
C1—C2—H2	108.00	H29B—C29—H29C	110.00
C3—C2—H2	108.00	C28—C30—H30A	109.00
C7—C2—H2	108.00	C28—C30—H30B	109.00
C2—C3—H3A	109.00	C28—C30—H30C	109.00
C2—C3—H3B	109.00	H30A—C30—H30B	109.00
C4—C3—H3A	109.00	H30A—C30—H30C	109.00
C4—C3—H3B	109.00	H30B—C30—H30C	110.00
H3A—C3—H3B	108.00	C31—C32—H32A	109.00
C3—C4—H4A	110.00	C31—C32—H32B	110.00
C3—C4—H4B	110.00	C31—C32—H32C	109.00
C5—C4—H4A	110.00	H32A—C32—H32B	109.00
C5—C4—H4B	110.00	H32A—C32—H32C	109.00
H4A—C4—H4B	108.00	H32B—C32—H32C	109.00

C13—O1—C9—C6	−32.6 (2)	C14—C10—C11—C12	74.0 (3)
C13—O1—C9—C10	87.5 (2)	C15—C10—C11—C12	−164.9 (2)
C13—O1—C9—C18	−152.2 (2)	C9—C10—C15—C16	65.3 (2)
C9—O1—C13—O2	−174.0 (2)	C9—C10—C15—C19	−56.4 (3)
C9—O1—C13—C5	4.4 (3)	C9—C10—C15—C20	−175.7 (2)
C31—O3—C27—C26	97.1 (4)	C11—C10—C15—C16	−174.0 (2)
C31—O3—C27—C28	−136.9 (3)	C11—C10—C15—C19	64.3 (3)
C27—O3—C31—O4	6.1 (6)	C11—C10—C15—C20	−55.0 (3)
C27—O3—C31—C32	−174.5 (3)	C14—C10—C15—C16	−54.5 (2)
C1—C2—C3—C4	178.3 (2)	C14—C10—C15—C19	−176.2 (2)
C7—C2—C3—C4	−57.0 (3)	C14—C10—C15—C20	64.5 (3)
C1—C2—C7—C6	179.0 (2)	C10—C11—C12—C5	48.1 (3)
C1—C2—C7—C8	−58.1 (3)	C10—C15—C16—C17	−54.2 (3)
C3—C2—C7—C6	55.5 (3)	C10—C15—C16—C23	171.3 (2)
C3—C2—C7—C8	178.4 (3)	C19—C15—C16—C17	67.8 (3)
C2—C3—C4—C5	53.2 (3)	C19—C15—C16—C23	−66.7 (3)
C3—C4—C5—C6	−50.6 (3)	C20—C15—C16—C17	−174.9 (2)
C3—C4—C5—C12	75.5 (3)	C20—C15—C16—C23	50.6 (3)
C3—C4—C5—C13	−162.9 (2)	C10—C15—C20—C21	−166.3 (2)
C4—C5—C6—C7	54.9 (3)	C16—C15—C20—C21	−48.6 (3)
C4—C5—C6—C9	−166.2 (2)	C19—C15—C20—C21	71.5 (3)
C12—C5—C6—C7	−72.7 (3)	C15—C16—C17—C18	24.5 (4)
C12—C5—C6—C9	66.2 (3)	C23—C16—C17—C18	159.8 (3)
C13—C5—C6—C7	176.2 (2)	C15—C16—C23—C22	−54.8 (3)
C13—C5—C6—C9	−44.9 (2)	C15—C16—C23—C24	72.0 (3)
C4—C5—C12—C11	170.9 (2)	C15—C16—C23—C25	−169.7 (2)
C6—C5—C12—C11	−62.3 (3)	C17—C16—C23—C22	173.7 (2)
C13—C5—C12—C11	44.6 (3)	C17—C16—C23—C24	−59.6 (3)
C4—C5—C13—O1	145.8 (2)	C17—C16—C23—C25	58.7 (3)
C4—C5—C13—O2	−36.0 (4)	C16—C17—C18—C9	−1.6 (5)
C6—C5—C13—O1	26.3 (3)	C15—C20—C21—C22	56.5 (3)
C6—C5—C13—O2	−155.5 (3)	C20—C21—C22—C23	−61.7 (3)
C12—C5—C13—O1	−88.5 (2)	C20—C21—C22—C28	162.7 (2)
C12—C5—C13—O2	89.7 (3)	C21—C22—C23—C16	57.9 (3)
C5—C6—C7—C2	−55.5 (3)	C21—C22—C23—C24	−66.9 (3)
C5—C6—C7—C8	−178.5 (2)	C21—C22—C23—C25	173.1 (2)
C9—C6—C7—C2	179.4 (2)	C28—C22—C23—C16	−168.1 (2)
C9—C6—C7—C8	56.4 (3)	C28—C22—C23—C24	67.1 (3)
C5—C6—C9—O1	46.7 (2)	C28—C22—C23—C25	−52.9 (3)
C5—C6—C9—C10	−67.0 (3)	C21—C22—C28—C27	−175.0 (3)
C5—C6—C9—C18	158.3 (2)	C21—C22—C28—C29	61.8 (3)
C7—C6—C9—O1	177.7 (2)	C21—C22—C28—C30	−59.4 (4)
C7—C6—C9—C10	64.0 (3)	C23—C22—C28—C27	52.4 (3)
C7—C6—C9—C18	−70.7 (3)	C23—C22—C28—C29	−70.8 (3)
O1—C9—C10—C11	−50.0 (3)	C23—C22—C28—C30	168.0 (3)
O1—C9—C10—C14	−166.42 (19)	C16—C23—C25—C26	166.3 (3)
O1—C9—C10—C15	73.2 (2)	C22—C23—C25—C26	52.6 (3)
C6—C9—C10—C11	57.6 (3)	C24—C23—C25—C26	−72.4 (3)
C6—C9—C10—C14	−58.8 (3)	C23—C25—C26—C27	−57.1 (4)
C6—C9—C10—C15	−179.2 (2)	C25—C26—C27—O3	−178.5 (3)
C18—C9—C10—C11	−166.2 (2)	C25—C26—C27—C28	59.0 (4)
C18—C9—C10—C14	77.4 (3)	O3—C27—C28—C22	−176.2 (2)
C18—C9—C10—C15	−42.9 (3)	O3—C27—C28—C29	−51.5 (3)
O1—C9—C18—C17	−105.8 (3)	O3—C27—C28—C30	67.7 (3)
C6—C9—C18—C17	147.6 (3)	C26—C27—C28—C22	−54.1 (3)
C10—C9—C18—C17	11.5 (4)	C26—C27—C28—C29	70.5 (3)
C9—C10—C11—C12	−43.9 (3)	C26—C27—C28—C30	−170.2 (3)

Experimental details

Crystal data
Chemical formula	C₃₂H₄₈O₄
M_r	496.70
Crystal system, space group	Monoclinic, P2₁
Temperature (K)	296
a, b, c (Å)	13.7309 (8), 6.9177 (4), 14.8539 (9)
β (°)	90.943 (2)
V (Å³)	1410.73 (14)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	0.08
Crystal size (mm)	0.35 × 0.20 × 0.18

Data collection
Diffractometer	Bruker Kappa APEXII CCD diffractometer
Absorption correction	Multi-scan (SADABS; Bruker, 2005)
T_min, T_max	0.975, 0.987
No. of measured, independent and observed [I > 2σ(I)] reflections	11401, 2856, 2261
R_int	0.029
(sin θ/λ)_max (Å⁻¹)	0.606

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.041, 0.101, 1.03
No. of reflections	2856
No. of parameters	333
No. of restraints	1
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.15, −0.15

Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012) and PLATON (Spek, 2009), WinGX (Farrugia, 2012) and PLATON (Spek, 2009).

Acknowledgements

The authors acknowledge the provision of funds for the purchase of the diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan. The authors also acknowledge the technical support provided by Syed Muhammad Hussain Rizvi of Bana International, Karachi, Pakistan.

References

Bruker (2005). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2009). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358. CrossRef CAS Web of Science Google Scholar
El-Seedi, H. R., Hazell, A. C. & Torssell, K. B. G. (1994). Phytochemistry, 35, 1297–1299. CAS Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar

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