(αR,4R,4aR,6aS,7R,8S,10R,11S)-Methyl α-acet­oxy-4-(3-furan­yl)-10-hy­droxy-4a,7,9,9-tetra­methyl-2,13-dioxo-1,4,4a,5,6,6a,7,8,9,10,11,12-dodeca­hydro-7,11-methano-2H-cyclo­octa­[f][2]benzopyran-8-acetate (6-O-acetyl­swietenolide) from the seeds of Swietenia macrophylla

Goh, B.H.; Abdul Kadir, H.; Abdul Malek, S.N.; Ng, S.W.

doi:10.1107/S1600536810039942

organic compounds

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 66| Part 11| November 2010| Pages o2802-o2803

https://doi.org/10.1107/S1600536810039942

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(αR,4R,4aR,6aS,7R,8S,10R,11S)-Methyl α-acetoxy-4-(3-furanyl)-10-hydroxy-4a,7,9,9-tetramethyl-2,13-dioxo-1,4,4a,5,6,6a,7,8,9,10,11,12-dodecahydro-7,11-methano-2H-cycloocta[f][2]benzopyran-8-acetate (6-O-acetylswietenolide) from the seeds of Swietenia macrophylla

Bey Hing Goh,^a Habsah Abdul Kadir,^a Sri Nurestri Abdul Malek ^a and Seik Weng Ng ^b ^*

^aInstitute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia, and ^bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
^*Correspondence e-mail: seikweng@um.edu.my

(Received 6 October 2010; accepted 6 October 2010; online 13 October 2010)

The molecule of O-acetylswietenolide, C₂₉H₃₆O₉, isolated from the seeds of Swietenia macrophylla, features four six-membered rings connected together in the shape of a bowl; one of the inner rings adopts a twisted chair conformation owing to the C=C double bond. The furyl substitutent is connected to an outer ring, and it points away from the bowl cavity. The hydroxy group is connected to a carbonyl O atom of an adjacent molecule by an O—H⋯O hydrogen bond, generating a chain running along the b axis.

Related literature

For the absolute stereochemistry assignment, see: Bickii et al. (2000 ); Kadota et al. (1990 ); Mootoo et al. (1999 ); Narender et al. (2008 ). For another swietenolide isolated from Swietenia macrophylla, see: Goh et al. (2010 ).

Experimental

Crystal data

C₂₉H₃₆O₉
M_r = 528.58
Monoclinic, P 2₁
a = 11.5648 (9) Å
b = 8.4355 (6) Å
c = 14.5082 (11) Å
β = 112.985 (1)°
V = 1302.98 (17) Å³
Z = 2
Mo Kα radiation
μ = 0.10 mm⁻¹
T = 100 K
0.35 × 0.15 × 0.05 mm

Data collection

Bruker SMART APEX diffractometer
12419 measured reflections
3178 independent reflections
2952 reflections with I > 2σ(I)
R_int = 0.034

Refinement

R[F² > 2σ(F²)] = 0.034
wR(F²) = 0.100
S = 1.00
3178 reflections
353 parameters
2 restraints
H atoms treated by a mixture of independent and constrained refinement
Δρ_max = 0.27 e Å⁻³
Δρ_min = −0.20 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O5—H5⋯O8ⁱ	0.84 (1)	1.99 (1)	2.827 (2)	175 (3)
Symmetry code: (i) x, y+1, z.

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: X-SEED (Barbour, 2001 ); software used to prepare material for publication: publCIF (Westrip, 2010 ).

Supporting information

Crystal structure: contains datablocks global, I. DOI: https://doi.org/10.1107/S1600536810039942/bt5372sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810039942/bt5372Isup2.hkl

checkCIF report

Comment top

Sweietenia macrophylla is a large mahogany tree growing in the rainforests of Malaysia. The extracts of the seeds contain flavonoids, saponins and alkaloids that are commecialized in local herbal products. A previous study reports the crystal structure of swietenolide diactate (Goh et al., 2010). The title compound (Scheme I, Fig. 1), which was isolated from the same plant, differs only in having a hydroxy group in place of a acetoxy group. The hydroxy group engages in O–H···O hydrogen bonding to generate a chain structure.

Related literature top

For the absolute stereochemistry assignment, see: Bickii et al. (2000); Kadota et al. (1990); Mootoo et al. (1999); Narender et al. (2008). For another swietenolide isolated from Swietenia macrophylla, see: Goh et al. (2010).

Experimental top

The finely ground seeds ofSweietenia macrophylla (600 g) were soaked in ethanol at room temperature for three days. The mixture was filtered and the solvent evaporated to give a dark yellow crude material (70 g). A portion (40 g) was successively extracted with n-hexane, ethyl acetate and water to give an n-hexane-insoluble residue. The residue was partitioned between ethyl acetate-water (1:1) to give an ethyl acetate-soluble fraction (30 g, 80%).

This fraction (3 g) was subjected to column chromatography on silica gel (70–230 mesh, 300 g), with initial elution by n-hexane, followed by increasing proportions of chloroform. Eleven fractions were obtained. The fourth fraction (2 g) was further subjected to column chromatography (70–230 mesh,200 g), initially eluting with n-hexane and later with acetone to give twelve fractions.

The eighth fraction (600 mg) was dissolved in methanol and kept in a refrigerator. A white solid was obtained after two days, and a second crop was obtained after another two days. Recrystallization of the first crop from chloroform yielded colorless crystals of the swietenolide diacetate (yield 15 mg). The ninth fraction (80 mg) yielded O-acetylswietenolide (13 mg) after recrystalization from chloroform.

Structure description top

For the absolute stereochemistry assignment, see: Bickii et al. (2000); Kadota et al. (1990); Mootoo et al. (1999); Narender et al. (2008). For another swietenolide isolated from Swietenia macrophylla, see: Goh et al. (2010).

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: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2010).

Figures top

Fig. 1. Anisotropic displacement ellipsoid plot (Barbour, 2001) of C₂₉H₃₆O₉ at the 70% probability level; hydrogen atoms are drawn as spheres of arbitrary radius.

(αR,4R,4aR,6aS,7R,8S,10R, 11S)-Methyl α-acetoxy-4-(3-furanyl)-10-hydroxy-4a,7,9,9-tetramethyl-2,13-dioxo- 1,4,4a,5,6,6a,7,8,9,10,11,12-dodecahydro-7,11-methano-2H- cycloocta[f][2]benzopyran-8-acetate top

Crystal data top

C₂₉H₃₆O₉	F(000) = 564
M_r = 528.58	D_x = 1.347 Mg m⁻³
Monoclinic, P2₁	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2yb	Cell parameters from 4876 reflections
a = 11.5648 (9) Å	θ = 2.9–28.1°
b = 8.4355 (6) Å	µ = 0.10 mm⁻¹
c = 14.5082 (11) Å	T = 100 K
β = 112.985 (1)°	Prism, colorless
V = 1302.98 (17) Å³	0.35 × 0.15 × 0.05 mm
Z = 2

Data collection top

Bruker SMART APEX diffractometer	2952 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	R_int = 0.034
Graphite monochromator	θ_max = 27.5°, θ_min = 1.9°
ω scans	h = −15→15
12419 measured reflections	k = −10→10
3178 independent reflections	l = −18→18

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)] = 0.034	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.100	H atoms treated by a mixture of independent and constrained refinement
S = 1.00	w = 1/[σ²(F_o²) + (0.0733P)² + 0.1429P] where P = (F_o² + 2F_c²)/3
3178 reflections	(Δ/σ)_max = 0.001
353 parameters	Δρ_max = 0.27 e Å⁻³
2 restraints	Δρ_min = −0.20 e Å⁻³

Crystal data top

C₂₉H₃₆O₉	V = 1302.98 (17) Å³
M_r = 528.58	Z = 2
Monoclinic, P2₁	Mo Kα radiation
a = 11.5648 (9) Å	µ = 0.10 mm⁻¹
b = 8.4355 (6) Å	T = 100 K
c = 14.5082 (11) Å	0.35 × 0.15 × 0.05 mm
β = 112.985 (1)°

Data collection top

Bruker SMART APEX diffractometer	2952 reflections with I > 2σ(I)
12419 measured reflections	R_int = 0.034
3178 independent reflections

Refinement top

R[F² > 2σ(F²)] = 0.034	2 restraints
wR(F²) = 0.100	H atoms treated by a mixture of independent and constrained refinement
S = 1.00	Δρ_max = 0.27 e Å⁻³
3178 reflections	Δρ_min = −0.20 e Å⁻³
353 parameters

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

	x	y	z	U_iso*/U_eq
O1	0.61851 (17)	0.5009 (2)	1.01707 (12)	0.0283 (4)
O2	0.47929 (19)	1.1423 (2)	0.73073 (15)	0.0344 (4)
O3	0.55291 (15)	0.92107 (19)	0.81247 (12)	0.0198 (3)
O4	0.87219 (16)	0.6373 (2)	0.44745 (12)	0.0257 (4)
O5	0.89022 (14)	0.99908 (19)	0.69927 (12)	0.0200 (3)
H5	0.945 (2)	1.059 (3)	0.7393 (18)	0.024 (7)*
O6	0.92901 (15)	0.6390 (2)	0.91487 (12)	0.0264 (4)
O7	1.12489 (15)	0.5429 (2)	0.96568 (11)	0.0224 (4)
O8	1.06597 (15)	0.21550 (19)	0.82808 (12)	0.0218 (3)
O9	1.10687 (14)	0.46053 (18)	0.78928 (12)	0.0169 (3)
C1	0.4977 (2)	0.5532 (3)	0.98089 (18)	0.0268 (5)
H1	0.4365	0.5202	1.0054	0.032*
C2	0.4760 (2)	0.6575 (3)	0.90604 (17)	0.0237 (5)
H2	0.3990	0.7097	0.8688	0.028*
C3	0.5928 (2)	0.6741 (3)	0.89368 (16)	0.0184 (4)
C4	0.6748 (2)	0.5781 (3)	0.96307 (17)	0.0252 (5)
H4	0.7605	0.5660	0.9730	0.030*
C5	0.61902 (19)	0.7714 (3)	0.81867 (16)	0.0162 (4)
H5A	0.7112	0.7937	0.8451	0.019*
C6	0.5376 (2)	1.0223 (3)	0.73623 (17)	0.0200 (4)
C7	0.5993 (2)	0.9818 (3)	0.66575 (16)	0.0174 (4)
H7A	0.6814	1.0370	0.6892	0.021*
H7B	0.5471	1.0261	0.5993	0.021*
C8	0.62213 (18)	0.8084 (3)	0.65186 (15)	0.0144 (4)
C9	0.57977 (19)	0.6948 (3)	0.71383 (16)	0.0156 (4)
C10	0.4363 (2)	0.6743 (3)	0.66379 (17)	0.0203 (5)
H10A	0.4133	0.6334	0.5957	0.030*
H10B	0.3955	0.7770	0.6610	0.030*
H10C	0.4088	0.5995	0.7028	0.030*
C11	0.6478 (2)	0.5347 (2)	0.72606 (16)	0.0159 (4)
H11A	0.7348	0.5460	0.7762	0.019*
H11B	0.6046	0.4553	0.7517	0.019*
C12	0.6513 (2)	0.4750 (3)	0.62825 (16)	0.0178 (4)
H12A	0.5646	0.4503	0.5813	0.021*
H12B	0.7002	0.3751	0.6415	0.021*
C13	0.70907 (19)	0.5924 (3)	0.57788 (16)	0.0159 (4)
H13	0.6677	0.5706	0.5044	0.019*
C14	0.67811 (19)	0.7634 (3)	0.59133 (15)	0.0148 (4)
C15	0.7178 (2)	0.8800 (3)	0.53024 (16)	0.0183 (4)
H15A	0.7045	0.9891	0.5493	0.022*
H15B	0.6638	0.8655	0.4585	0.022*
C16	0.8571 (2)	0.8611 (3)	0.54462 (17)	0.0186 (4)
H16	0.8712	0.9238	0.4914	0.022*
C17	0.8692 (2)	0.6869 (3)	0.52527 (16)	0.0189 (4)
C18	0.85658 (19)	0.5781 (3)	0.60545 (16)	0.0153 (4)
C19	0.8895 (2)	0.4080 (3)	0.58576 (17)	0.0189 (4)
H19A	0.8320	0.3742	0.5189	0.028*
H19B	0.8813	0.3364	0.6361	0.028*
H19C	0.9760	0.4050	0.5897	0.028*
C20	0.93657 (19)	0.6467 (2)	0.71258 (15)	0.0125 (4)
H20	0.8750	0.7049	0.7329	0.015*
C21	1.03242 (19)	0.7743 (3)	0.71073 (16)	0.0154 (4)
C22	0.9545 (2)	0.9152 (3)	0.64803 (17)	0.0185 (4)
H22	1.0139	0.9906	0.6361	0.022*
C23	1.1253 (2)	0.7223 (3)	0.66323 (18)	0.0211 (5)
H23A	1.1843	0.6442	0.7067	0.032*
H23B	1.1719	0.8149	0.6555	0.032*
H23C	1.0785	0.6748	0.5975	0.032*
C24	1.1129 (2)	0.8349 (3)	0.81604 (17)	0.0198 (5)
H24A	1.1701	0.7508	0.8541	0.030*
H24B	1.0582	0.8656	0.8503	0.030*
H24C	1.1618	0.9270	0.8110	0.030*
C25	0.99178 (19)	0.5175 (2)	0.79253 (15)	0.0146 (4)
H25	0.9310	0.4271	0.7753	0.018*
C26	1.0111 (2)	0.5757 (3)	0.89756 (16)	0.0179 (4)
C27	1.1475 (3)	0.5980 (4)	1.06570 (19)	0.0352 (7)
H27A	1.2382	0.6054	1.1047	0.053*
H27B	1.1105	0.5233	1.0982	0.053*
H27C	1.1092	0.7027	1.0620	0.053*
C28	1.1339 (2)	0.3050 (3)	0.80775 (16)	0.0166 (4)
C29	1.2531 (2)	0.2641 (3)	0.79648 (18)	0.0216 (5)
H29A	1.2356	0.2438	0.7258	0.032*
H29B	1.2898	0.1691	0.8359	0.032*
H29C	1.3123	0.3526	0.8204	0.032*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
O1	0.0289 (9)	0.0383 (10)	0.0209 (8)	−0.0019 (8)	0.0133 (7)	0.0061 (7)
O2	0.0402 (11)	0.0271 (9)	0.0458 (11)	0.0131 (9)	0.0274 (9)	0.0032 (9)
O3	0.0224 (8)	0.0193 (7)	0.0225 (8)	−0.0008 (6)	0.0140 (7)	−0.0051 (6)
O4	0.0284 (9)	0.0365 (9)	0.0172 (8)	0.0106 (8)	0.0142 (7)	0.0037 (7)
O5	0.0157 (7)	0.0171 (7)	0.0276 (9)	0.0008 (6)	0.0090 (7)	0.0000 (6)
O6	0.0182 (8)	0.0465 (10)	0.0158 (8)	0.0061 (8)	0.0079 (6)	−0.0018 (8)
O7	0.0201 (8)	0.0307 (9)	0.0139 (7)	0.0063 (7)	0.0038 (6)	0.0016 (7)
O8	0.0229 (8)	0.0159 (7)	0.0267 (9)	0.0003 (6)	0.0097 (7)	0.0020 (7)
O9	0.0141 (7)	0.0146 (7)	0.0230 (8)	0.0029 (6)	0.0084 (6)	0.0025 (6)
C1	0.0251 (11)	0.0347 (13)	0.0254 (12)	−0.0046 (10)	0.0150 (10)	−0.0012 (10)
C2	0.0208 (11)	0.0304 (12)	0.0249 (12)	−0.0033 (10)	0.0142 (9)	−0.0012 (10)
C3	0.0196 (10)	0.0231 (11)	0.0150 (10)	−0.0037 (9)	0.0096 (8)	−0.0058 (8)
C4	0.0219 (11)	0.0363 (13)	0.0198 (11)	−0.0019 (10)	0.0105 (9)	0.0025 (10)
C5	0.0134 (9)	0.0197 (10)	0.0170 (10)	−0.0018 (8)	0.0077 (8)	−0.0030 (8)
C6	0.0172 (10)	0.0220 (10)	0.0223 (11)	0.0000 (9)	0.0095 (9)	−0.0044 (9)
C7	0.0158 (10)	0.0195 (10)	0.0182 (10)	0.0031 (8)	0.0081 (8)	0.0009 (8)
C8	0.0081 (9)	0.0189 (10)	0.0132 (10)	0.0018 (7)	0.0010 (7)	−0.0003 (8)
C9	0.0116 (9)	0.0203 (10)	0.0151 (9)	−0.0016 (8)	0.0053 (8)	−0.0032 (8)
C10	0.0137 (10)	0.0282 (12)	0.0199 (10)	−0.0035 (9)	0.0076 (8)	−0.0071 (9)
C11	0.0161 (9)	0.0175 (10)	0.0167 (10)	−0.0035 (8)	0.0094 (8)	−0.0018 (8)
C12	0.0165 (10)	0.0189 (10)	0.0200 (10)	−0.0024 (8)	0.0091 (8)	−0.0044 (8)
C13	0.0116 (9)	0.0201 (10)	0.0152 (10)	0.0017 (8)	0.0045 (8)	−0.0032 (8)
C14	0.0105 (9)	0.0203 (10)	0.0124 (9)	0.0026 (8)	0.0031 (7)	0.0008 (8)
C15	0.0147 (10)	0.0249 (10)	0.0156 (10)	0.0057 (9)	0.0063 (8)	0.0051 (9)
C16	0.0183 (11)	0.0241 (11)	0.0182 (10)	0.0055 (8)	0.0123 (9)	0.0081 (9)
C17	0.0136 (10)	0.0274 (11)	0.0172 (10)	0.0050 (8)	0.0077 (8)	0.0045 (9)
C18	0.0131 (9)	0.0193 (10)	0.0146 (9)	0.0019 (8)	0.0066 (8)	0.0007 (8)
C19	0.0188 (10)	0.0228 (11)	0.0174 (10)	0.0027 (9)	0.0096 (9)	−0.0033 (8)
C20	0.0108 (8)	0.0141 (9)	0.0127 (9)	0.0029 (7)	0.0045 (7)	0.0010 (7)
C21	0.0129 (9)	0.0161 (9)	0.0201 (10)	0.0013 (8)	0.0096 (8)	0.0029 (8)
C22	0.0154 (10)	0.0159 (10)	0.0260 (11)	0.0030 (8)	0.0102 (9)	0.0068 (8)
C23	0.0134 (10)	0.0234 (10)	0.0303 (12)	0.0039 (8)	0.0126 (9)	0.0074 (9)
C24	0.0148 (10)	0.0168 (10)	0.0259 (12)	−0.0007 (8)	0.0058 (9)	0.0002 (8)
C25	0.0127 (9)	0.0145 (9)	0.0173 (10)	0.0012 (8)	0.0065 (8)	0.0014 (8)
C26	0.0169 (10)	0.0218 (10)	0.0157 (10)	−0.0007 (9)	0.0071 (8)	0.0028 (8)
C27	0.0271 (13)	0.0530 (18)	0.0161 (11)	0.0144 (13)	−0.0017 (10)	−0.0026 (11)
C28	0.0178 (10)	0.0147 (10)	0.0139 (10)	0.0019 (8)	0.0026 (8)	−0.0014 (8)
C29	0.0183 (10)	0.0187 (10)	0.0276 (12)	0.0055 (9)	0.0089 (9)	−0.0002 (9)

Geometric parameters (Å, º) top

O1—C1	1.360 (3)	C12—H12B	0.9900
O1—C4	1.364 (3)	C13—C14	1.518 (3)
O2—C6	1.202 (3)	C13—C18	1.597 (3)
O3—C6	1.353 (3)	C13—H13	1.0000
O3—C5	1.461 (3)	C14—C15	1.510 (3)
O4—C17	1.217 (3)	C15—C16	1.550 (3)
O5—C22	1.427 (3)	C15—H15A	0.9900
O5—H5	0.84 (1)	C15—H15B	0.9900
O6—C26	1.198 (3)	C16—C17	1.513 (3)
O7—C26	1.330 (3)	C16—C22	1.552 (3)
O7—C27	1.447 (3)	C16—H16	1.0000
O8—C28	1.206 (3)	C17—C18	1.533 (3)
O9—C28	1.351 (3)	C18—C19	1.540 (3)
O9—C25	1.433 (2)	C18—C20	1.576 (3)
C1—C2	1.343 (4)	C19—H19A	0.9800
C1—H1	0.9500	C19—H19B	0.9800
C2—C3	1.438 (3)	C19—H19C	0.9800
C2—H2	0.9500	C20—C25	1.537 (3)
C3—C4	1.350 (3)	C20—C21	1.553 (3)
C3—C5	1.486 (3)	C20—H20	1.0000
C4—H4	0.9500	C21—C24	1.533 (3)
C5—C9	1.548 (3)	C21—C23	1.549 (3)
C5—H5A	1.0000	C21—C22	1.553 (3)
C6—C7	1.497 (3)	C22—H22	1.0000
C7—C8	1.513 (3)	C23—H23A	0.9800
C7—H7A	0.9900	C23—H23B	0.9800
C7—H7B	0.9900	C23—H23C	0.9800
C8—C14	1.333 (3)	C24—H24A	0.9800
C8—C9	1.520 (3)	C24—H24B	0.9800
C9—C11	1.538 (3)	C24—H24C	0.9800
C9—C10	1.539 (3)	C25—C26	1.532 (3)
C10—H10A	0.9800	C25—H25	1.0000
C10—H10B	0.9800	C27—H27A	0.9800
C10—H10C	0.9800	C27—H27B	0.9800
C11—C12	1.521 (3)	C27—H27C	0.9800
C11—H11A	0.9900	C28—C29	1.490 (3)
C11—H11B	0.9900	C29—H29A	0.9800
C12—C13	1.530 (3)	C29—H29B	0.9800
C12—H12A	0.9900	C29—H29C	0.9800

C1—O1—C4	105.78 (19)	C17—C16—C22	112.35 (18)
C6—O3—C5	119.61 (16)	C15—C16—C22	115.07 (18)
C22—O5—H5	104 (2)	C17—C16—H16	108.4
C26—O7—C27	114.67 (18)	C15—C16—H16	108.4
C28—O9—C25	117.71 (17)	C22—C16—H16	108.4
C2—C1—O1	111.4 (2)	O4—C17—C16	123.0 (2)
C2—C1—H1	124.3	O4—C17—C18	122.9 (2)
O1—C1—H1	124.3	C16—C17—C18	113.45 (18)
C1—C2—C3	106.0 (2)	C17—C18—C19	108.29 (17)
C1—C2—H2	127.0	C17—C18—C20	109.63 (18)
C3—C2—H2	127.0	C19—C18—C20	115.63 (17)
C4—C3—C2	105.6 (2)	C17—C18—C13	100.00 (16)
C4—C3—C5	126.4 (2)	C19—C18—C13	109.91 (18)
C2—C3—C5	128.0 (2)	C20—C18—C13	112.19 (16)
C3—C4—O1	111.2 (2)	C18—C19—H19A	109.5
C3—C4—H4	124.4	C18—C19—H19B	109.5
O1—C4—H4	124.4	H19A—C19—H19B	109.5
O3—C5—C3	105.74 (16)	C18—C19—H19C	109.5
O3—C5—C9	110.76 (17)	H19A—C19—H19C	109.5
C3—C5—C9	115.06 (18)	H19B—C19—H19C	109.5
O3—C5—H5A	108.4	C25—C20—C21	114.55 (16)
C3—C5—H5A	108.4	C25—C20—C18	113.28 (17)
C9—C5—H5A	108.4	C21—C20—C18	112.67 (16)
O2—C6—O3	118.5 (2)	C25—C20—H20	105.1
O2—C6—C7	123.5 (2)	C21—C20—H20	105.1
O3—C6—C7	117.99 (19)	C18—C20—H20	105.1
C6—C7—C8	117.74 (19)	C24—C21—C23	106.33 (18)
C6—C7—H7A	107.9	C24—C21—C20	111.93 (17)
C8—C7—H7A	107.9	C23—C21—C20	115.78 (18)
C6—C7—H7B	107.9	C24—C21—C22	108.43 (18)
C8—C7—H7B	107.9	C23—C21—C22	107.51 (17)
H7A—C7—H7B	107.2	C20—C21—C22	106.60 (16)
C14—C8—C7	121.15 (19)	O5—C22—C16	108.69 (17)
C14—C8—C9	124.17 (19)	O5—C22—C21	112.06 (17)
C7—C8—C9	114.66 (17)	C16—C22—C21	112.18 (18)
C8—C9—C11	110.70 (16)	O5—C22—H22	107.9
C8—C9—C10	109.21 (18)	C16—C22—H22	107.9
C11—C9—C10	111.35 (18)	C21—C22—H22	107.9
C8—C9—C5	106.23 (16)	C21—C23—H23A	109.5
C11—C9—C5	108.21 (17)	C21—C23—H23B	109.5
C10—C9—C5	111.03 (17)	H23A—C23—H23B	109.5
C9—C10—H10A	109.5	C21—C23—H23C	109.5
C9—C10—H10B	109.5	H23A—C23—H23C	109.5
H10A—C10—H10B	109.5	H23B—C23—H23C	109.5
C9—C10—H10C	109.5	C21—C24—H24A	109.5
H10A—C10—H10C	109.5	C21—C24—H24B	109.5
H10B—C10—H10C	109.5	H24A—C24—H24B	109.5
C12—C11—C9	112.46 (17)	C21—C24—H24C	109.5
C12—C11—H11A	109.1	H24A—C24—H24C	109.5
C9—C11—H11A	109.1	H24B—C24—H24C	109.5
C12—C11—H11B	109.1	O9—C25—C26	111.32 (17)
C9—C11—H11B	109.1	O9—C25—C20	109.29 (16)
H11A—C11—H11B	107.8	C26—C25—C20	112.31 (17)
C11—C12—C13	114.02 (17)	O9—C25—H25	107.9
C11—C12—H12A	108.7	C26—C25—H25	107.9
C13—C12—H12A	108.7	C20—C25—H25	107.9
C11—C12—H12B	108.7	O6—C26—O7	124.9 (2)
C13—C12—H12B	108.7	O6—C26—C25	122.11 (19)
H12A—C12—H12B	107.6	O7—C26—C25	112.95 (18)
C14—C13—C12	112.65 (17)	O7—C27—H27A	109.5
C14—C13—C18	108.77 (17)	O7—C27—H27B	109.5
C12—C13—C18	117.01 (18)	H27A—C27—H27B	109.5
C14—C13—H13	105.9	O7—C27—H27C	109.5
C12—C13—H13	105.9	H27A—C27—H27C	109.5
C18—C13—H13	105.9	H27B—C27—H27C	109.5
C8—C14—C15	122.6 (2)	O8—C28—O9	122.2 (2)
C8—C14—C13	123.70 (19)	O8—C28—C29	126.9 (2)
C15—C14—C13	113.74 (17)	O9—C28—C29	110.79 (19)
C14—C15—C16	113.10 (17)	C28—C29—H29A	109.5
C14—C15—H15A	109.0	C28—C29—H29B	109.5
C16—C15—H15A	109.0	H29A—C29—H29B	109.5
C14—C15—H15B	109.0	C28—C29—H29C	109.5
C16—C15—H15B	109.0	H29A—C29—H29C	109.5
H15A—C15—H15B	107.8	H29B—C29—H29C	109.5
C17—C16—C15	103.94 (19)

C4—O1—C1—C2	0.9 (3)	C15—C16—C17—C18	−68.0 (2)
O1—C1—C2—C3	−0.4 (3)	C22—C16—C17—C18	57.1 (2)
C1—C2—C3—C4	−0.3 (3)	O4—C17—C18—C19	17.1 (3)
C1—C2—C3—C5	177.9 (2)	C16—C17—C18—C19	−171.89 (18)
C2—C3—C4—O1	0.9 (3)	O4—C17—C18—C20	144.1 (2)
C5—C3—C4—O1	−177.3 (2)	C16—C17—C18—C20	−44.9 (2)
C1—O1—C4—C3	−1.1 (3)	O4—C17—C18—C13	−97.9 (2)
C6—O3—C5—C3	−166.70 (18)	C16—C17—C18—C13	73.1 (2)
C6—O3—C5—C9	−41.4 (2)	C14—C13—C18—C17	−62.5 (2)
C4—C3—C5—O3	−140.9 (2)	C12—C13—C18—C17	168.46 (18)
C2—C3—C5—O3	41.3 (3)	C14—C13—C18—C19	−176.26 (17)
C4—C3—C5—C9	96.5 (3)	C12—C13—C18—C19	54.7 (2)
C2—C3—C5—C9	−81.3 (3)	C14—C13—C18—C20	53.6 (2)
C5—O3—C6—O2	177.6 (2)	C12—C13—C18—C20	−75.4 (2)
C5—O3—C6—C7	−5.1 (3)	C17—C18—C20—C25	−147.54 (17)
O2—C6—C7—C8	−155.4 (2)	C19—C18—C20—C25	−24.8 (2)
O3—C6—C7—C8	27.5 (3)	C13—C18—C20—C25	102.3 (2)
C6—C7—C8—C14	−179.1 (2)	C17—C18—C20—C21	−15.5 (2)
C6—C7—C8—C9	−0.7 (3)	C19—C18—C20—C21	107.2 (2)
C14—C8—C9—C11	19.3 (3)	C13—C18—C20—C21	−125.63 (18)
C7—C8—C9—C11	−159.00 (18)	C25—C20—C21—C24	−46.3 (2)
C14—C8—C9—C10	−103.6 (2)	C18—C20—C21—C24	−177.77 (17)
C7—C8—C9—C10	78.1 (2)	C25—C20—C21—C23	75.7 (2)
C14—C8—C9—C5	136.6 (2)	C18—C20—C21—C23	−55.7 (2)
C7—C8—C9—C5	−41.7 (2)	C25—C20—C21—C22	−164.74 (17)
O3—C5—C9—C8	63.6 (2)	C18—C20—C21—C22	63.8 (2)
C3—C5—C9—C8	−176.52 (18)	C17—C16—C22—O5	−129.80 (18)
O3—C5—C9—C11	−177.45 (16)	C15—C16—C22—O5	−11.1 (2)
C3—C5—C9—C11	−57.6 (2)	C17—C16—C22—C21	−5.3 (2)
O3—C5—C9—C10	−55.0 (2)	C15—C16—C22—C21	113.3 (2)
C3—C5—C9—C10	64.9 (2)	C24—C21—C22—O5	−49.9 (2)
C8—C9—C11—C12	−45.1 (2)	C23—C21—C22—O5	−164.50 (18)
C10—C9—C11—C12	76.6 (2)	C20—C21—C22—O5	70.7 (2)
C5—C9—C11—C12	−161.11 (17)	C24—C21—C22—C16	−172.51 (17)
C9—C11—C12—C13	55.3 (2)	C23—C21—C22—C16	72.9 (2)
C11—C12—C13—C14	−35.6 (3)	C20—C21—C22—C16	−51.8 (2)
C11—C12—C13—C18	91.5 (2)	C28—O9—C25—C26	90.9 (2)
C7—C8—C14—C15	−2.3 (3)	C28—O9—C25—C20	−144.50 (18)
C9—C8—C14—C15	179.45 (19)	C21—C20—C25—O9	−47.2 (2)
C7—C8—C14—C13	177.06 (19)	C18—C20—C25—O9	84.0 (2)
C9—C8—C14—C13	−1.2 (3)	C21—C20—C25—C26	76.9 (2)
C12—C13—C14—C8	8.9 (3)	C18—C20—C25—C26	−151.96 (17)
C18—C13—C14—C8	−122.5 (2)	C27—O7—C26—O6	−3.3 (4)
C12—C13—C14—C15	−171.68 (18)	C27—O7—C26—C25	179.2 (2)
C18—C13—C14—C15	56.9 (2)	O9—C25—C26—O6	174.3 (2)
C8—C14—C15—C16	127.9 (2)	C20—C25—C26—O6	51.4 (3)
C13—C14—C15—C16	−51.6 (3)	O9—C25—C26—O7	−8.1 (3)
C14—C15—C16—C17	52.2 (2)	C20—C25—C26—O7	−131.01 (19)
C14—C15—C16—C22	−71.1 (2)	C25—O9—C28—O8	−1.2 (3)
C15—C16—C17—O4	103.1 (2)	C25—O9—C28—C29	177.21 (17)
C22—C16—C17—O4	−131.9 (2)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O5—H5···O8ⁱ	0.84 (1)	1.99 (1)	2.827 (2)	175 (3)

Symmetry code: (i) x, y+1, z.

Experimental details

Crystal data
Chemical formula	C₂₉H₃₆O₉
M_r	528.58
Crystal system, space group	Monoclinic, P2₁
Temperature (K)	100
a, b, c (Å)	11.5648 (9), 8.4355 (6), 14.5082 (11)
β (°)	112.985 (1)
V (Å³)	1302.98 (17)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	0.10
Crystal size (mm)	0.35 × 0.15 × 0.05

Data collection
Diffractometer	Bruker SMART APEX
Absorption correction	–
No. of measured, independent and observed [I > 2σ(I)] reflections	12419, 3178, 2952
R_int	0.034
(sin θ/λ)_max (Å⁻¹)	0.650

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.034, 0.100, 1.00
No. of reflections	3178
No. of parameters	353
No. of restraints	2
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.27, −0.20

Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), publCIF (Westrip, 2010).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O5—H5···O8ⁱ	0.84 (1)	1.99 (1)	2.827 (2)	175 (3)

Symmetry code: (i) x, y+1, z.

Acknowledgements

We thank the University of Malaya for supporting this study.

References

Barbour, L. J. (2001). J. Supramol. Chem. 1, 189–191. CrossRef CAS Google Scholar
Bickii, J., Njifutie, N., Ayafo Foyere, J., Basco, L. K. & Ringwald, P. (2000). J. Enthnopharmacol. 69, 27–33. Web of Science CrossRef CAS Google Scholar
Bruker (2009). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Goh, B. H., Abdul Kadir, H., Abdul Malek, S. N. & Ng, S. W. (2010). Acta Cryst. E66, o1396. Web of Science CSD CrossRef IUCr Journals Google Scholar
Kadota, S., Maraung, L., Kikuchi, T. & Ekimoto, H. (1990). Chem. Pharm. Bull. 36, 639–651. CrossRef Google Scholar
Mootoo, B. S., Ali, A., Motilal, R., Pingal, R., Ramlal, A., Khan, A., Reynolds, W. F. & McLean, S. (1999). J. Nat. Prod. 62, 1515–1517. Web of Science CrossRef Google Scholar
Narender, T., Khaliq, T. & Shweta, T. (2008). Nat. Prod. Res. A22, 763–800. Web of Science CrossRef Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920–925. Web of Science CrossRef CAS IUCr Journals Google Scholar

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Volume 66| Part 11| November 2010| Pages o2802-o2803

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organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

(αR,4R,4aR,6aS,7R,8S,10R,11S)-Methyl α-acet­­oxy-4-(3-furan­yl)-10-hy­dr­oxy-4a,7,9,9-tetra­methyl-2,13-dioxo-1,4,4a,5,6,6a,7,8,9,10,11,12-dodeca­hydro-7,11-methano-2H-cyclo­octa­[f][2]benzo­pyran-8-acetate (6-O-acetyl­swietenolide) from the seeds of Swietenia macrophylla

Related literature

Experimental

Crystal data

Data collection

Refinement

Supporting information

Acknowledgements

References

organic compounds

(αR,4R,4aR,6aS,7R,8S,10R,11S)-Methyl α-acetoxy-4-(3-furanyl)-10-hydroxy-4a,7,9,9-tetramethyl-2,13-dioxo-1,4,4a,5,6,6a,7,8,9,10,11,12-dodecahydro-7,11-methano-2H-cycloocta[f][2]benzopyran-8-acetate (6-O-acetylswietenolide) from the seeds of Swietenia macrophylla