Crystal structure of ochraceolide A isolated from Elaeodendron trichotomum (Turcz.) Lundell

The crystal structure of the triterpene lactone ochraceolide A (3-oxolup-20 (29)-en-30,21α-olide) isolated from Elaeodendron trichotomum (Turcz.) Lundell is reported.

Abstract

The title compound, C₃₀H₄₄O₃ [systematic name: 6aR,6 bR,8aS,9aR,12aR,14bR)-4,4,6a,6;b,8a,14b-hexa­methyl-12-methyl­eneicosa­hydro-3H-phenanthro[1′,2′:6,7]indeno­[2,1-b]furan-3,11(2H)-dione], is a triterpene lactone, which was isolated from di­chloro­methane extract of Elaeodendron trichotomum (Turcz.) Lundell (celastraceae) stem bark. The compound has a lupane skeleton and consists of four fused six-membered rings and two five-membered rings. In the crystal, mol­ecules are linked by weak C—H⋯O hydrogen bonds into a three-dimensional network. The configuration of ochraceolide A was proposed based on analogue compounds which belong to the lupane type.

Chemical context  

Ochraceolides A–E are a group of cytotoxic lupane γ-lactones isolated from the Celastraceae family. Ochraceolide A was firstly isolated from Kokoona ochracea (Elm.) Merril stem bark (Ngassapa et al., 1991 ▸) and afterwards from Lophopetalum wallichii (Sturm et al., 1996 ▸) and Cassine xylocarpa (Callies et al., 2015 ▸). The title compound has shown significant cytotoxic activity against murine lymphocytic leukemia cells (P-388) with an ED₅₀ of 0.6 µM; human oral epidermoid carcinoma (KB-3) with an ED₅₀ of 6.0 µM; and hormone-dependent breast cancer with an ED₅₀ of 9.9 µM (Ngassapa et al., 1991 ▸; Sturm et al., 1996 ▸). In the same way, this compound has exhibited significant inhibitory activity in the FPTase assay with an IC₅₀ of 2.2 µM (Sturm et al., 1996 ▸) and inhibitory effects of human immunodeficiency virus type 1 replication with an IC₅₀ of 39.0 µM (Callies et al., 2015 ▸). Ochraceolide A is part of the structure of the Diels–Alder adduct (i.e. celastroidine A or volubilide) isolated from Hippocratea celastroides K. (Jiménez-Estrada et al., 2000 ▸) and Hyppocratea volubilis L. (Alvarenga et al., 2000 ▸). In these publications, the crystal structure of the adduct was reported as a solvate of di­chloro­methane and toluene, respectively. The X-ray analysis showed that the Diels–Alder adduct was integrated by the triterpene ochraceolide A and a theoretical diterpene, in which the former seems to have acted as dienophile and the latter as diene in the biosynthesis. Herein the first isolation of ochraceolide A from Elaeodendron trichotomum (Turcz.) Lundell stem bark is reported and the crystal structure described.

Structural commentary  

The title compound has a lupane skeleton and crystallizes in the ortho­rhom­bic space group P2₁2₁2₁ with one mol­ecule in the asymmetric unit (Fig. 1 ▸). The triterpene skeleton consists of four fused six-membered rings (A–D) and two five-membered rings (E and F). The cyclo­hexane rings are trans-fused and in standard chair conformations. The cyclo­pentane (C17–C19/C21/C22) ring is trans-fused to the triterpene D ring and exhibits an envelope conformation [Q = 0.451 (4) Å and θ = 356.7 (5)°] with the puckered C17 atom having the maximum deviation of 0.285 (4) Å. The α-methyl­ene γ-lactone is cis-fused at C19–C21 to the cyclo­pentane E ring and is essentially planar with a maximum deviation of 0.006 (4) Å for atom C19. The torsion angle C20—C19—C21—O2 is 0.8 (4)° and the weighted average absolute inter­nal torsion angle for the lactone ring is 0.7 (2)°

Figure 1.

The molecular structure of the title compound with the atom labelling. Displacement ellipsoids are drawn at the 50% probability level and H atoms are shown as spheres of arbitrary radius.

Supra­molecular features  

In the crystal, mol­ecules are linked by weak C—H⋯O hydrogen bonds (Table 1 ▸, Fig. 2 ▸). The lactone and A rings of adjacent mol­ecules inter­act through two hydrogen bonds (C2—H2A⋯O2 and C24—H24A⋯O3) in a head-to-tail arrangement, forming chains along [001]. These chains are further connected through a weak hydrogen bond between the oxygen of the ketone group (O1) and a methyl­ene group on the C ring (C12), forming an overall three-dimensional network.

Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C2—H2A⋯O2i	0.99	2.57	3.395 (5)	141
C12—H12A⋯O1ii	0.99	2.45	3.310 (6)	146
C24—H24A⋯O3i	0.98	2.58	3.357 (6)	137

Symmetry codes: (i) ; (ii) .

Figure 2.

Part of the crystal structure showing hydrogen bonds as blue lines.

Database survey  

A search of the Cambridge Structural Database (CSD Version 5.38, update November 2016; Groom et al., 2016 ▸) for α-methyl­ene γ-lactone fused to a cyclo­pentane ring gave only one entry for 6,6-dimethyl-3-methyl­ene­tetra­hydro-2H-cyclo­penta­[b]furan-2,5(3H)-dione (CCDC 658922; Edwards et al., 2008 ▸). In both compounds, the principal supra­molecular inter­actions are C—H⋯O hydrogen bonds and the α-methyl­ene γ-lactones are cis-fused to the corresponding cyclo­pentane ring. However, unlike the title compound, the γ-lactone of the synthetic compound presents a twisted conformation.

Isolation and crystallization  

Elaeodendron trichotomum (Turcz.) Lundell was collected from Chunchucmil, Yucatán, México (20^o 51.032′ N, 90^o 11.488′ W). A voucher specimen (JTun2328) was deposited at the Herbarium Alfredo Barrera Marín, Universidad Autónoma de Yucatán, México. Dried and milled stem bark (2100 g) was exhaustively extracted by di­chloro­methane using a Soxhlet extraction apparatus to yield 184.2 g of crude extract. A portion of the extract (100 g) was chromatographed on silica gel (40–60 µm) using a gradient elution with n-hexa­ne–ethyl acetate (10–100% ethyl acetate), to obtain 44 fractions. Single crystals suitable for X-ray structure analysis were obtained by slow evaporation of the mixture of solvents present in fractions 7–10 at room temperature.

Refinement  

Crystal data, data collection and structure refinement details are summarized in Table 2 ▸. Hydrogen atoms bonded to C atoms were positioned geometrically and refined using a riding model with C—H = 0.95–1.00 Å with U _iso(H) = 1.2U _eq(C) or 1.5U _eq(methyl C).

Table 2. Experimental details.

Crystal data
Chemical formula	C30H44O3
M r	452.65
Crystal system, space group	Orthorhombic, P212121
Temperature (K)	150
a, b, c (Å)	7.6131 (5), 11.7216 (7), 27.7076 (17)
V (Å3)	2472.6 (3)
Z	4
Radiation type	Cu Kα
μ (mm−1)	0.59
Crystal size (mm)	0.36 × 0.27 × 0.25
Data collection
Diffractometer	Bruker D8 Venture
Absorption correction	Multi-scan (SADABS; Krause et al., 2015 ▸)
T min, T max	0.783, 0.864
No. of measured, independent and observed [I > 2σ(I)] reflections	14632, 4513, 4057
R int	0.061
(sin θ/λ)max (Å−1)	0.603
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.061, 0.164, 1.09
No. of reflections	4513
No. of parameters	304
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.28, −0.19
Absolute structure	Flack x determined using 1515 quotients [(I +)−(I −)]/[(I +)+(I −)] (Parsons et al., 2013 ▸).
Absolute structure parameter	0.2 (3)

Computer programs: APEX3 and SAINT (Bruker, 2014 ▸), SHELXS2014 (Bruker, 2014 ▸), SHELXL2014/7 (Sheldrick, 2015 ▸), Mercury (Macrae et al., 2006 ▸), PLATON (Spek, 2009 ▸) and publCIF (Westrip, 2010 ▸).

Supplementary Material

CCDC reference: 1573017

Additional supporting information: crystallographic information; 3D view; checkCIF report

supplementary crystallographic information

Crystal data

C30H44O3	Dx = 1.216 Mg m−3
Mr = 452.65	Cu Kα radiation, λ = 1.54178 Å
Orthorhombic, P212121	Cell parameters from 9889 reflections
a = 7.6131 (5) Å	θ = 3.2–68.3°
b = 11.7216 (7) Å	µ = 0.59 mm−1
c = 27.7076 (17) Å	T = 150 K
V = 2472.6 (3) Å3	Prism, colourless
Z = 4	0.36 × 0.27 × 0.25 mm
F(000) = 992

Data collection

Bruker D8 Venture diffractometer	4513 independent reflections
Radiation source: micro-focus X-ray source	4057 reflections with I > 2σ(I)
Detector resolution: 52.0833 pixels mm-1	Rint = 0.061
ω–scans	θmax = 68.3°, θmin = 3.2°
Absorption correction: multi-scan (SADABS; Krause et al., 2015)	h = −9→8
Tmin = 0.783, Tmax = 0.864	k = −13→14
14632 measured reflections	l = −33→33

Refinement

Refinement on F2	Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: full	H-atom parameters constrained
R[F2 > 2σ(F2)] = 0.061	w = 1/[σ2(Fo2) + (0.0789P)2 + 0.8039P] where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.164	(Δ/σ)max < 0.001
S = 1.09	Δρmax = 0.28 e Å−3
4513 reflections	Δρmin = −0.19 e Å−3
304 parameters	Absolute structure: Flack x determined using 1515 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons et al., 2013).
0 restraints	Absolute structure parameter: 0.2 (3)

Special details

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
O1	0.7000 (9)	0.2747 (4)	1.1228 (2)	0.127 (2)
O2	0.2109 (5)	0.5554 (3)	0.68677 (10)	0.0712 (10)
O3	0.0663 (6)	0.3910 (4)	0.68208 (13)	0.0865 (12)
C1	0.4287 (7)	0.3773 (4)	1.02722 (13)	0.0568 (11)
H1A	0.3012	0.3872	1.0216	0.068*
H1B	0.4687	0.3118	1.0075	0.068*
C2	0.4602 (8)	0.3508 (4)	1.08081 (14)	0.0692 (14)
H2A	0.3999	0.4094	1.1005	0.083*
H2B	0.4059	0.2762	1.0884	0.083*
C3	0.6490 (8)	0.3471 (4)	1.09523 (16)	0.0674 (14)
C4	0.7745 (6)	0.4361 (3)	1.07509 (13)	0.0498 (10)
C5	0.7231 (6)	0.4658 (3)	1.02182 (11)	0.0415 (8)
H5	0.7540	0.3957	1.0031	0.050*
C6	0.8379 (6)	0.5589 (3)	0.99999 (13)	0.0482 (9)
H6A	0.9620	0.5455	1.0091	0.058*
H6B	0.8022	0.6339	1.0131	0.058*
C7	0.8213 (5)	0.5604 (3)	0.94485 (12)	0.0443 (8)
H7A	0.8673	0.4876	0.9319	0.053*
H7B	0.8953	0.6228	0.9319	0.053*
C8	0.6322 (5)	0.5770 (3)	0.92684 (11)	0.0347 (7)
C9	0.5071 (5)	0.4933 (3)	0.95387 (10)	0.0372 (8)
H9	0.5416	0.4159	0.9420	0.045*
C10	0.5260 (5)	0.4859 (3)	1.01054 (11)	0.0420 (8)
C11	0.3177 (5)	0.5085 (4)	0.93680 (12)	0.0460 (9)
H11A	0.2746	0.5839	0.9478	0.055*
H11B	0.2436	0.4494	0.9522	0.055*
C12	0.2954 (5)	0.5006 (3)	0.88168 (12)	0.0424 (8)
H12A	0.3119	0.4204	0.8715	0.051*
H12B	0.1743	0.5235	0.8730	0.051*
C13	0.4255 (5)	0.5761 (3)	0.85450 (11)	0.0326 (7)
H13	0.3992	0.6569	0.8634	0.039*
C14	0.6178 (4)	0.5509 (3)	0.87041 (11)	0.0321 (7)
C15	0.7510 (5)	0.6247 (3)	0.84160 (12)	0.0410 (8)
H15A	0.7459	0.7039	0.8539	0.049*
H15B	0.8708	0.5953	0.8478	0.049*
C16	0.7197 (5)	0.6269 (4)	0.78673 (12)	0.0457 (9)
H16A	0.7982	0.6842	0.7718	0.055*
H16B	0.7496	0.5514	0.7730	0.055*
C17	0.5299 (5)	0.6555 (3)	0.77439 (12)	0.0405 (8)
C18	0.4109 (4)	0.5670 (3)	0.79938 (11)	0.0336 (7)
H18	0.4567	0.4900	0.7903	0.040*
C19	0.2307 (5)	0.5807 (3)	0.77408 (12)	0.0415 (8)
H19	0.1522	0.6334	0.7925	0.050*
C20	0.1359 (5)	0.4732 (3)	0.76020 (13)	0.0460 (9)
C21	0.2797 (6)	0.6321 (4)	0.72350 (13)	0.0522 (10)
H21	0.2275	0.7099	0.7198	0.063*
C22	0.4785 (6)	0.6384 (4)	0.72141 (12)	0.0504 (10)
H22A	0.5178	0.7034	0.7013	0.060*
H22B	0.5291	0.5670	0.7083	0.060*
C30	0.1290 (6)	0.4657 (5)	0.70646 (16)	0.0625 (13)
C29	0.0717 (5)	0.3894 (4)	0.78608 (15)	0.0525 (10)
H29A	0.0215	0.3248	0.7706	0.063*
H29B	0.0754	0.3932	0.8203	0.063*
C26	0.5821 (6)	0.7027 (3)	0.93685 (12)	0.0470 (9)
H26A	0.6189	0.7235	0.9696	0.071*
H26B	0.4546	0.7118	0.9339	0.071*
H26C	0.6411	0.7523	0.9134	0.071*
C28	0.4863 (6)	0.7796 (3)	0.78893 (14)	0.0491 (9)
H28A	0.5315	0.7947	0.8214	0.074*
H28B	0.3587	0.7905	0.7886	0.074*
H28C	0.5410	0.8324	0.7660	0.074*
C27	0.6651 (5)	0.4251 (3)	0.85928 (11)	0.0382 (8)
H27A	0.6767	0.4150	0.8243	0.057*
H27B	0.5721	0.3750	0.8715	0.057*
H27C	0.7765	0.4057	0.8750	0.057*
C25	0.4458 (7)	0.5894 (4)	1.03594 (13)	0.0546 (11)
H25A	0.3345	0.6096	1.0203	0.082*
H25B	0.5271	0.6540	1.0338	0.082*
H25C	0.4243	0.5709	1.0699	0.082*
C24	0.7708 (7)	0.5395 (4)	1.10971 (13)	0.0584 (12)
H24A	0.6501	0.5677	1.1127	0.088*
H24B	0.8460	0.6002	1.0969	0.088*
H24C	0.8140	0.5161	1.1415	0.088*
C23	0.9581 (8)	0.3866 (5)	1.07703 (17)	0.0815 (18)
H23A	0.9834	0.3605	1.1099	0.122*
H23B	1.0434	0.4453	1.0677	0.122*
H23C	0.9665	0.3220	1.0547	0.122*

Atomic displacement parameters (Ų)

	U11	U22	U33	U12	U13	U23
O1	0.166 (5)	0.085 (3)	0.131 (4)	0.003 (3)	−0.022 (4)	0.066 (3)
O2	0.079 (2)	0.100 (3)	0.0340 (13)	0.015 (2)	−0.0172 (15)	0.0057 (15)
O3	0.090 (3)	0.108 (3)	0.062 (2)	0.011 (2)	−0.0361 (19)	−0.023 (2)
C1	0.084 (3)	0.058 (2)	0.0289 (17)	−0.010 (2)	0.0078 (19)	0.0033 (16)
C2	0.116 (4)	0.061 (3)	0.0311 (19)	−0.014 (3)	0.013 (2)	0.0049 (18)
C3	0.115 (4)	0.041 (2)	0.046 (2)	0.011 (2)	−0.007 (3)	0.0053 (18)
C4	0.076 (3)	0.0434 (19)	0.0296 (16)	0.0128 (19)	−0.0052 (17)	0.0002 (14)
C5	0.064 (2)	0.0337 (16)	0.0270 (15)	0.0099 (16)	−0.0007 (15)	−0.0032 (13)
C6	0.057 (2)	0.050 (2)	0.0371 (18)	−0.0026 (18)	−0.0093 (17)	0.0000 (15)
C7	0.050 (2)	0.049 (2)	0.0336 (16)	−0.0053 (17)	−0.0016 (16)	0.0048 (15)
C8	0.0472 (19)	0.0259 (14)	0.0312 (15)	−0.0022 (13)	0.0003 (14)	−0.0001 (12)
C9	0.050 (2)	0.0376 (17)	0.0242 (14)	−0.0016 (15)	0.0050 (14)	−0.0011 (12)
C10	0.060 (2)	0.0402 (18)	0.0253 (14)	0.0005 (17)	0.0048 (15)	−0.0029 (13)
C11	0.045 (2)	0.061 (2)	0.0320 (16)	−0.0069 (17)	0.0054 (15)	0.0050 (16)
C12	0.0439 (19)	0.050 (2)	0.0329 (16)	−0.0072 (16)	0.0017 (15)	0.0037 (15)
C13	0.0406 (17)	0.0297 (15)	0.0274 (14)	0.0047 (13)	0.0028 (13)	0.0006 (12)
C14	0.0400 (17)	0.0275 (15)	0.0288 (14)	0.0006 (13)	0.0038 (13)	0.0023 (11)
C15	0.0418 (19)	0.0447 (18)	0.0364 (17)	−0.0028 (15)	0.0029 (14)	0.0093 (14)
C16	0.047 (2)	0.054 (2)	0.0360 (18)	0.0031 (17)	0.0089 (15)	0.0156 (16)
C17	0.049 (2)	0.0415 (18)	0.0305 (16)	0.0104 (15)	0.0075 (15)	0.0103 (14)
C18	0.0394 (18)	0.0333 (16)	0.0280 (15)	0.0087 (14)	−0.0002 (13)	0.0013 (12)
C19	0.0452 (19)	0.0445 (18)	0.0348 (16)	0.0176 (15)	−0.0005 (15)	0.0002 (14)
C20	0.0397 (19)	0.055 (2)	0.0432 (19)	0.0165 (17)	−0.0098 (16)	−0.0102 (17)
C21	0.063 (2)	0.058 (2)	0.0356 (18)	0.024 (2)	−0.0016 (17)	0.0059 (16)
C22	0.062 (2)	0.061 (2)	0.0288 (17)	0.0212 (19)	0.0064 (16)	0.0122 (16)
C30	0.057 (3)	0.087 (3)	0.044 (2)	0.022 (3)	−0.021 (2)	−0.014 (2)
C29	0.043 (2)	0.060 (2)	0.055 (2)	0.0029 (18)	−0.0046 (18)	−0.0162 (19)
C26	0.075 (3)	0.0307 (17)	0.0350 (17)	−0.0006 (17)	−0.0062 (18)	−0.0047 (13)
C28	0.063 (3)	0.0358 (18)	0.049 (2)	0.0035 (17)	0.0063 (19)	0.0128 (16)
C27	0.052 (2)	0.0354 (17)	0.0271 (14)	0.0116 (15)	−0.0014 (14)	0.0004 (13)
C25	0.070 (3)	0.062 (2)	0.0316 (17)	0.020 (2)	0.0030 (18)	−0.0088 (17)
C24	0.093 (3)	0.052 (2)	0.0298 (16)	0.011 (2)	−0.0087 (19)	−0.0049 (16)
C23	0.106 (4)	0.095 (4)	0.044 (2)	0.049 (4)	−0.019 (3)	−0.010 (2)

Geometric parameters (Å, º)

O1—C3	1.206 (6)	C14—C15	1.553 (5)
O2—C30	1.338 (7)	C15—C16	1.539 (5)
O2—C21	1.455 (6)	C15—H15A	0.9900
O3—C30	1.205 (6)	C15—H15B	0.9900
C1—C2	1.536 (5)	C16—C17	1.522 (5)
C1—C10	1.544 (6)	C16—H16A	0.9900
C1—H1A	0.9900	C16—H16B	0.9900
C1—H1B	0.9900	C17—C22	1.532 (5)
C2—C3	1.492 (8)	C17—C18	1.542 (5)
C2—H2A	0.9900	C17—C28	1.545 (5)
C2—H2B	0.9900	C18—C19	1.549 (5)
C3—C4	1.521 (7)	C18—H18	1.0000
C4—C23	1.515 (7)	C19—C20	1.502 (6)
C4—C24	1.546 (5)	C19—C21	1.570 (5)
C4—C5	1.566 (4)	C19—H19	1.0000
C5—C6	1.523 (6)	C20—C29	1.311 (6)
C5—C10	1.550 (6)	C20—C30	1.492 (5)
C5—H5	1.0000	C21—C22	1.517 (6)
C6—C7	1.533 (5)	C21—H21	1.0000
C6—H6A	0.9900	C22—H22A	0.9900
C6—H6B	0.9900	C22—H22B	0.9900
C7—C8	1.536 (5)	C29—H29A	0.9500
C7—H7A	0.9900	C29—H29B	0.9500
C7—H7B	0.9900	C26—H26A	0.9800
C8—C26	1.546 (5)	C26—H26B	0.9800
C8—C9	1.559 (5)	C26—H26C	0.9800
C8—C14	1.597 (4)	C28—H28A	0.9800
C9—C11	1.528 (5)	C28—H28B	0.9800
C9—C10	1.579 (4)	C28—H28C	0.9800
C9—H9	1.0000	C27—H27A	0.9800
C10—C25	1.530 (5)	C27—H27B	0.9800
C11—C12	1.539 (4)	C27—H27C	0.9800
C11—H11A	0.9900	C25—H25A	0.9800
C11—H11B	0.9900	C25—H25B	0.9800
C12—C13	1.527 (5)	C25—H25C	0.9800
C12—H12A	0.9900	C24—H24A	0.9800
C12—H12B	0.9900	C24—H24B	0.9800
C13—C18	1.535 (4)	C24—H24C	0.9800
C13—C14	1.557 (5)	C23—H23A	0.9800
C13—H13	1.0000	C23—H23B	0.9800
C14—C27	1.549 (4)	C23—H23C	0.9800
C30—O2—C21	111.6 (3)	C16—C15—H15B	108.6
C2—C1—C10	112.4 (4)	C14—C15—H15B	108.6
C2—C1—H1A	109.1	H15A—C15—H15B	107.6
C10—C1—H1A	109.1	C17—C16—C15	111.9 (3)
C2—C1—H1B	109.1	C17—C16—H16A	109.2
C10—C1—H1B	109.1	C15—C16—H16A	109.2
H1A—C1—H1B	107.8	C17—C16—H16B	109.2
C3—C2—C1	114.5 (4)	C15—C16—H16B	109.2
C3—C2—H2A	108.6	H16A—C16—H16B	107.9
C1—C2—H2A	108.6	C16—C17—C22	115.4 (3)
C3—C2—H2B	108.6	C16—C17—C18	108.0 (3)
C1—C2—H2B	108.6	C22—C17—C18	101.1 (3)
H2A—C2—H2B	107.6	C16—C17—C28	110.7 (4)
O1—C3—C2	120.0 (6)	C22—C17—C28	108.5 (3)
O1—C3—C4	120.9 (6)	C18—C17—C28	112.9 (3)
C2—C3—C4	119.1 (4)	C13—C18—C17	111.0 (3)
C23—C4—C3	107.7 (4)	C13—C18—C19	120.5 (3)
C23—C4—C24	107.2 (4)	C17—C18—C19	104.3 (3)
C3—C4—C24	107.4 (4)	C13—C18—H18	106.8
C23—C4—C5	110.4 (3)	C17—C18—H18	106.8
C3—C4—C5	110.0 (4)	C19—C18—H18	106.8
C24—C4—C5	113.9 (3)	C20—C19—C18	117.0 (3)
C6—C5—C10	111.5 (3)	C20—C19—C21	101.9 (3)
C6—C5—C4	113.0 (3)	C18—C19—C21	103.5 (3)
C10—C5—C4	117.7 (3)	C20—C19—H19	111.2
C6—C5—H5	104.3	C18—C19—H19	111.2
C10—C5—H5	104.3	C21—C19—H19	111.2
C4—C5—H5	104.3	C29—C20—C30	119.2 (4)
C5—C6—C7	110.9 (3)	C29—C20—C19	131.9 (3)
C5—C6—H6A	109.5	C30—C20—C19	108.8 (4)
C7—C6—H6A	109.5	O2—C21—C22	111.3 (3)
C5—C6—H6B	109.5	O2—C21—C19	107.6 (4)
C7—C6—H6B	109.5	C22—C21—C19	106.9 (3)
H6A—C6—H6B	108.0	O2—C21—H21	110.3
C6—C7—C8	113.7 (3)	C22—C21—H21	110.3
C6—C7—H7A	108.8	C19—C21—H21	110.3
C8—C7—H7A	108.8	C21—C22—C17	103.0 (3)
C6—C7—H7B	108.8	C21—C22—H22A	111.2
C8—C7—H7B	108.8	C17—C22—H22A	111.2
H7A—C7—H7B	107.7	C21—C22—H22B	111.2
C7—C8—C26	107.0 (3)	C17—C22—H22B	111.2
C7—C8—C9	109.7 (3)	H22A—C22—H22B	109.1
C26—C8—C9	111.3 (3)	O3—C30—O2	121.8 (4)
C7—C8—C14	111.0 (3)	O3—C30—C20	128.1 (5)
C26—C8—C14	110.0 (3)	O2—C30—C20	110.1 (4)
C9—C8—C14	107.9 (2)	C20—C29—H29A	120.0
C11—C9—C8	110.7 (3)	C20—C29—H29B	120.0
C11—C9—C10	113.6 (3)	H29A—C29—H29B	120.0
C8—C9—C10	117.1 (3)	C8—C26—H26A	109.5
C11—C9—H9	104.6	C8—C26—H26B	109.5
C8—C9—H9	104.6	H26A—C26—H26B	109.5
C10—C9—H9	104.6	C8—C26—H26C	109.5
C25—C10—C1	108.9 (3)	H26A—C26—H26C	109.5
C25—C10—C5	114.5 (3)	H26B—C26—H26C	109.5
C1—C10—C5	106.2 (3)	C17—C28—H28A	109.5
C25—C10—C9	112.2 (3)	C17—C28—H28B	109.5
C1—C10—C9	107.4 (3)	H28A—C28—H28B	109.5
C5—C10—C9	107.3 (3)	C17—C28—H28C	109.5
C9—C11—C12	113.8 (3)	H28A—C28—H28C	109.5
C9—C11—H11A	108.8	H28B—C28—H28C	109.5
C12—C11—H11A	108.8	C14—C27—H27A	109.5
C9—C11—H11B	108.8	C14—C27—H27B	109.5
C12—C11—H11B	108.8	H27A—C27—H27B	109.5
H11A—C11—H11B	107.7	C14—C27—H27C	109.5
C13—C12—C11	112.5 (3)	H27A—C27—H27C	109.5
C13—C12—H12A	109.1	H27B—C27—H27C	109.5
C11—C12—H12A	109.1	C10—C25—H25A	109.5
C13—C12—H12B	109.1	C10—C25—H25B	109.5
C11—C12—H12B	109.1	H25A—C25—H25B	109.5
H12A—C12—H12B	107.8	C10—C25—H25C	109.5
C12—C13—C18	113.8 (3)	H25A—C25—H25C	109.5
C12—C13—C14	111.1 (3)	H25B—C25—H25C	109.5
C18—C13—C14	109.7 (3)	C4—C24—H24A	109.5
C12—C13—H13	107.3	C4—C24—H24B	109.5
C18—C13—H13	107.3	H24A—C24—H24B	109.5
C14—C13—H13	107.3	C4—C24—H24C	109.5
C27—C14—C15	106.0 (3)	H24A—C24—H24C	109.5
C27—C14—C13	110.0 (3)	H24B—C24—H24C	109.5
C15—C14—C13	111.3 (3)	C4—C23—H23A	109.5
C27—C14—C8	111.2 (2)	C4—C23—H23B	109.5
C15—C14—C8	110.6 (3)	H23A—C23—H23B	109.5
C13—C14—C8	107.8 (2)	C4—C23—H23C	109.5
C16—C15—C14	114.6 (3)	H23A—C23—H23C	109.5
C16—C15—H15A	108.6	H23B—C23—H23C	109.5
C14—C15—H15A	108.6
C10—C1—C2—C3	−52.1 (6)	C18—C13—C14—C8	172.8 (2)
C1—C2—C3—O1	−139.3 (5)	C7—C8—C14—C27	62.4 (4)
C1—C2—C3—C4	41.2 (6)	C26—C8—C14—C27	−179.3 (3)
O1—C3—C4—C23	24.3 (6)	C9—C8—C14—C27	−57.8 (4)
C2—C3—C4—C23	−156.2 (4)	C7—C8—C14—C15	−55.1 (3)
O1—C3—C4—C24	−90.8 (6)	C26—C8—C14—C15	63.2 (4)
C2—C3—C4—C24	88.7 (5)	C9—C8—C14—C15	−175.3 (3)
O1—C3—C4—C5	144.7 (5)	C7—C8—C14—C13	−176.9 (3)
C2—C3—C4—C5	−35.8 (5)	C26—C8—C14—C13	−58.7 (4)
C23—C4—C5—C6	−64.0 (5)	C9—C8—C14—C13	62.9 (3)
C3—C4—C5—C6	177.2 (3)	C27—C14—C15—C16	72.7 (4)
C24—C4—C5—C6	56.6 (5)	C13—C14—C15—C16	−46.9 (4)
C23—C4—C5—C10	163.7 (4)	C8—C14—C15—C16	−166.6 (3)
C3—C4—C5—C10	44.9 (4)	C14—C15—C16—C17	50.6 (4)
C24—C4—C5—C10	−75.7 (5)	C15—C16—C17—C22	−169.3 (3)
C10—C5—C6—C7	−61.6 (4)	C15—C16—C17—C18	−57.2 (4)
C4—C5—C6—C7	163.1 (3)	C15—C16—C17—C28	66.9 (4)
C5—C6—C7—C8	57.3 (4)	C12—C13—C18—C17	173.2 (3)
C6—C7—C8—C26	72.4 (4)	C14—C13—C18—C17	−61.6 (3)
C6—C7—C8—C9	−48.5 (4)	C12—C13—C18—C19	51.0 (4)
C6—C7—C8—C14	−167.6 (3)	C14—C13—C18—C19	176.2 (3)
C7—C8—C9—C11	179.7 (3)	C16—C17—C18—C13	64.1 (4)
C26—C8—C9—C11	61.4 (4)	C22—C17—C18—C13	−174.3 (3)
C14—C8—C9—C11	−59.3 (3)	C28—C17—C18—C13	−58.6 (4)
C7—C8—C9—C10	47.2 (4)	C16—C17—C18—C19	−164.7 (3)
C26—C8—C9—C10	−71.1 (4)	C22—C17—C18—C19	−43.1 (3)
C14—C8—C9—C10	168.2 (3)	C28—C17—C18—C19	72.6 (4)
C2—C1—C10—C25	−66.7 (5)	C13—C18—C19—C20	−98.8 (4)
C2—C1—C10—C5	57.0 (5)	C17—C18—C19—C20	135.8 (3)
C2—C1—C10—C9	171.6 (4)	C13—C18—C19—C21	150.0 (3)
C6—C5—C10—C25	−68.7 (4)	C17—C18—C19—C21	24.7 (3)
C4—C5—C10—C25	64.3 (4)	C18—C19—C20—C29	63.3 (5)
C6—C5—C10—C1	171.1 (3)	C21—C19—C20—C29	175.3 (4)
C4—C5—C10—C1	−56.0 (4)	C18—C19—C20—C30	−113.1 (3)
C6—C5—C10—C9	56.5 (4)	C21—C19—C20—C30	−1.0 (4)
C4—C5—C10—C9	−170.6 (3)	C30—O2—C21—C22	116.4 (4)
C11—C9—C10—C25	−55.7 (4)	C30—O2—C21—C19	−0.3 (4)
C8—C9—C10—C25	75.5 (4)	C20—C19—C21—O2	0.8 (4)
C11—C9—C10—C1	64.0 (4)	C18—C19—C21—O2	122.7 (3)
C8—C9—C10—C1	−164.8 (3)	C20—C19—C21—C22	−118.8 (4)
C11—C9—C10—C5	177.8 (3)	C18—C19—C21—C22	3.1 (4)
C8—C9—C10—C5	−51.0 (4)	O2—C21—C22—C17	−146.9 (3)
C8—C9—C11—C12	53.1 (4)	C19—C21—C22—C17	−29.8 (4)
C10—C9—C11—C12	−172.7 (3)	C16—C17—C22—C21	160.8 (3)
C9—C11—C12—C13	−49.7 (4)	C18—C17—C22—C21	44.7 (4)
C11—C12—C13—C18	178.0 (3)	C28—C17—C22—C21	−74.3 (4)
C11—C12—C13—C14	53.6 (4)	C21—O2—C30—O3	−178.3 (4)
C12—C13—C14—C27	60.9 (3)	C21—O2—C30—C20	−0.4 (5)
C18—C13—C14—C27	−65.8 (3)	C29—C20—C30—O3	1.8 (7)
C12—C13—C14—C15	178.1 (3)	C19—C20—C30—O3	178.7 (4)
C18—C13—C14—C15	51.4 (3)	C29—C20—C30—O2	−176.0 (4)
C12—C13—C14—C8	−60.5 (3)	C19—C20—C30—O2	0.9 (5)

Hydrogen-bond geometry (Å, º)

D—H···A	D—H	H···A	D···A	D—H···A
C2—H2A···O2i	0.99	2.57	3.395 (5)	141
C12—H12A···O1ii	0.99	2.45	3.310 (6)	146
C24—H24A···O3i	0.98	2.58	3.357 (6)	137

Symmetry codes: (i) −x+1/2, −y+1, z+1/2; (ii) −x−1, y+1/2, −z+5/2.

Funding Statement

This work was funded by Facultad de Química, Universidad Autonoma de Yucatan grant SISTPROY FQUI-2016-0006.