Crystal structure of (−)-(5R,7R,8S,9R,10S)-8-methyl-7-[(5R)-3-methyl-2-oxooxolan-3-en-5-yl]-1-aza-6-oxatri­cyclo­[8.3.0.05,9]tridecan-13-one monohydrate

Oishi, T.; Yoritate, M.; Sato, T.; Chida, N.

doi:10.1107/S2056989018004425

research communications

CRYSTALLOGRAPHIC
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ISSN: 2056-9890

Volume 74| Part 4| April 2018| Pages 555-558

https://doi.org/10.1107/S2056989018004425

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Crystal structure of (−)-(5R,7R,8S,9R,10S)-8-methyl-7-[(5R)-3-methyl-2-oxooxolan-3-en-5-yl]-1-aza-6-oxatricyclo[8.3.0.0^5,9]tridecan-13-one monohydrate

Takeshi Oishi,^a ^* Makoto Yoritate,^b Takaaki Sato ^b and Noritaka Chida ^b

^aSchool of Medicine, Keio University, Hiyoshi 4-1-1, Kohoku-ku, Yokohama 223-8521, Japan, and ^bDepartment of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan
^*Correspondence e-mail: oec@keio.jp

Edited by H. Ishida, Okayama University, Japan (Received 12 March 2018; accepted 16 March 2018; online 27 March 2018)

The title compound, C₁₇H₂₃NO₄·H₂O, is an epimer of the natural tetracyclic alkaloid isosaxorumamide which consists of a fused 5–7–5 tricyclic core and a dihydrofuranone substituent. The terminal dihydrofuran ring is essentially planar with a maximum deviation of 0.0273 (14) Å from the mean plane and oxolane, azepane and pyrrolidine rings in the tricyclic ring system adopt twist, twist-chair and envelope forms, respectively. In the crystal, the amide and water molecules are linked by O—H⋯O hydrogen bonds, forming a tape structure running along the b-axis direction. The tapes are further connected by C—H⋯O interactions into a three-dimensional architecture.

Keywords: crystal structure; isosaxorumamide; tetracyclic compound; fused tricyclic core; oxolane; azepane; pyrrolidine; hydrogen bond.

CCDC reference: 1830268

1. Chemical context

Saxorumamide and isosaxorumamide are natural Stemona alkaloids isolated from the root of Stemona Saxorum (Wang et al., 2007 ). They are a pair of diastereomer (12-epimer of each other) which consist of a fused octahydrofuro[3,2-c]pyrrolo[1,2-a]azepane nucleus with a dihydrofuranone substituent (Fig. 1). The Stemona alkaloids have been isolated from various Stemonaceae species, and over 150 metabolites have been elucidated (Pilli et al., 2000 , 2010 ). Extracts of Stemonaceae plants have been traditionally used for folk medicines as antitussive and anthelmintic agents in the wide regions of East Asia and Southeast Asia (Greger, 2006 ). Stemona Saxorum has also been utilized for endemic disease in Vietnam. The title compound is an 11-epimer of isosaxorumamide afforded in a synthetic study of stemoamide-type alkaloids (Yoritate et al., 2017 ).

Figure 1
Structures of two natural products, saxorumamide and isosaxorumamide, and the title compound. Differences in the relative stereochemistries of these three diastereomers are shown in red.

2. Structural commentary

The asymmetric unit of the title compound is shown in Fig. 2. The terminal 3-methyloxolan-3-en-2-one unit (C16/O17/C18–C20/O21/C22) is essentially planar with a maximum deviation of 0.0383 (16) Å at atom O17. The oxolane ring (C5/O6/C7–C9) in the fused tricyclic ring system adopts a twist form with puckering parameters of Q(2) = 0.350 (3) Å and φ(2) = 271.0 (4)°. Atoms C8 and C9 deviate from the plane through the other three atoms by 0.309 (6) and −0.271 (6) Å, respectively. The central seven-membered azepane ring (N1/C2–C5/C9/C10), which is trans-fused to the oxolane ring, adopts a twist-chair form with puckering parameters of Q = 0.796 (2), Q(2) = 0.472 (2) Å, φ(2) = 195.0 (3)°, Q(3) = 0.641 (2) Å and φ(3) = 246.7 (2)°. The pyrrolidine ring (N1/C10–C13) fused to the azepane ring adopts an envelope form with puckering parameters of Q(2) = 0.300 (3) Å and φ(2) = 251.1 (5)°. The flap atom C11 deviates from the mean plane through the other four atoms by 0.473 (4) Å. The amide moiety (N1/C2/C10/C13/O14) is planar, and atoms N1 and O14 deviate from the mean plane through the other three atoms by 0.028 (2) and −0.035 (4) Å, respectively.

Figure 2
The asymmetric unit of the title compound, showing the atom labelling. Displacement ellipsoids are drawn at the 50% probability level. Only H atoms connected to O and chiral C atoms are shown for clarity.

3. Supramolecular features

The crystal packing is stabilized by O—H⋯O hydrogen bonds (O1W—H1WA⋯O14ⁱ and O1W—H1WB⋯O14ⁱⁱ; symmetry codes as in Table 1) between the water molecule and the amide O atom (Fig. 3). The amide and water molecules are linked alternately into a tape with a C₂¹(4) graph-set motif running along the b-axis direction. A C—H⋯O interaction (C7—H7⋯O21ⁱⁱⁱ; Table 1) supports the tape structure, generating a C(6) graph-set motif. Furthermore, a weak C—H⋯O interaction (C22—H22C⋯O21^iv; Table 1) links the tape structures, extending them into a three-dimensional network (Fig. 4).

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1W—H1WA⋯O14ⁱ	0.86 (2)	2.02 (2)	2.874 (3)	173 (3)
O1W—H1WB⋯O14ⁱⁱ	0.86 (2)	1.99 (2)	2.835 (3)	167 (3)
C7—H7⋯O21ⁱⁱⁱ	1.00	2.47	3.254 (3)	135
C22—H22C⋯O21^iv	0.98	2.58	3.407 (3)	142
Symmetry codes: (i) x-1, y, z; (ii) $[-x+2, y-{\script{1\over 2}}, -z+{\script{1\over 2}}]$ ; (iii) x, y+1, z; (iv) $[x+{\script{1\over 2}}, -y+{\script{1\over 2}}, -z]$ .

Figure 3
A partial packing diagram viewed down the a axis, showing the tape structure running along the b-axis direction. Yellow lines indicate the O—H⋯O hydrogen bonds. Black dashed lines indicate C—H⋯O interactions. Only H atoms involved in the hydrogen bonds are shown for clarity. [Symmetry codes: (i) x − 1, y, z; (ii) −x + 2, y − $[{1\over 2}]$ , −z + $[{1\over 2}]$ ; (v) x − 1, y + 1, z.]

Figure 4
The crystal packing of the title compound, viewed down the b axis, showing wavy architectures which consist of the tape structures running along the b-axis direction. Yellow lines indicate the O—H⋯O hydrogen bonds. Black dashed lines indicate C—H⋯O interactions. Only H atoms involved in the hydrogen bonds are shown for clarity. [Symmetry code: (iv) x + $[{1\over 2}]$ , −y + $[{1\over 2}]$ , −z.]

4. Database survey

In the Cambridge Structural Database (CSD, Version 5.39, Nov. 2017; Groom et al., 2016 ), 19 structures are registered which contain an 8-methyl-1-aza-6-oxatricyclo[8.3.0.0^5,9]tridecane skeleton, (a), i.e. the fused tricyclic core related to the title compound (Fig. 5). These include four structures of its -13-one derivatives, (b), with CSD refcodes VATJAC (Kakuta et al., 2003 ), KEGYIF (Olivo et al., 2006 ), XATFOP (Bates & Sridhar, 2011 ) and YAHMIF (Zhang et al., 2011 ), and three structures of its 7-(3-methyl-2-oxooxolan-3-en-5-ylidene) derivatives, (c), with refcodes PROTMI (Ishizuka et al., 1972 ), PROTOS10 (Irie et al., 1973 ) and OJIRII (Kaltenegger et al., 2003 ). For the former four structures, the stereochemical and conformational properties, as trans-fused furoazepane, relative stereochemistry and conformation of nitrogen-containing rings, are almost coincident with those of the title compound. On the other hand, the oxolane ring shows an envelope form in these four structures rather than a twist form as in the title compound. KEGYIF (space group P2₁) is the natural alkaloid (–)-stemoamide, which is a -7,13-dione derivative of (a), and XATFOP (space group P2₁/n) is its racemate.

Figure 5
The core structures for database survey; (a) 8-methyl-1-aza-6-oxatricyclo[8.3.0.0^5,9]tridecane, and its (b) −13-one and (c) 7-(3-methyl-2-oxo-oxolan-3-en-5-ylidene) derivatives. Structures of the title compound and (–)-stemoamide are also shown for comparison.

5. Synthesis and crystallization

The title compound was afforded in a synthetic study of saxorumamide and isosaxorumamide, from ethyl 4-bromobutanoate and a siloxypyrrole analogue (Yoritate et al., 2017). The stereochemistry was controlled at the first step of the synthesis by enantioselective alkynylation according to the reported conditions (Trost et al., 2006 , 2012 ), and confirmed with HPLC analysis (>98% ee). The (–)-stemoamide was provided as a tricyclic core intermediate, and its structure and relative and absolute configurations were identical with those reported (Lin et al., 1992 ). Purification was carried out by silica gel column chromatography, and pale-yellow crystals were obtained from an EtOAc/hexane mixed solvent (9:1) under a hexane-saturated atmosphere by slow evaporation at ambient temperature, m.p. 466–467 K. [α]_D²³ – 37.9 (c 0.100, CHCl₃). HRMS (ESI) m/z calculated for C₁₇H₂₄NO₄⁺ [M + H]⁺: 306.1705; found: 306.1703.

6. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2. C-bound H atoms were positioned geometrically with C—H = 0.95–1.00 Å, and constrained to ride on their parent atoms with U_iso(H) = 1.2U_eq(C) or 1.5U_eq(methyl C). Water H atoms were located in a difference-Fourier map, and then refined freely with U_iso(H) = 1.5U_eq(O), and with distance restraints of O—H = 0.84 (2) Å and H⋯H = 1.33 (4) Å.

Table 2
Experimental details

Crystal data
Chemical formula	C₁₇H₂₃NO₄·H₂O
M_r	323.38
Crystal system, space group	Orthorhombic, P2₁2₁2₁
Temperature (K)	90
a, b, c (Å)	6.6180 (3), 7.1197 (3), 34.7351 (15)
V (Å³)	1636.65 (12)
Z	4
Radiation type	Mo Kα
μ (mm⁻¹)	0.10
Crystal size (mm)	0.23 × 0.20 × 0.18

Data collection
Diffractometer	Bruker D8 Venture
Absorption correction	Multi-scan (SADABS; Bruker, 2016 )
T_min, T_max	0.98, 0.98
No. of measured, independent and observed [I > 2σ(I)] reflections	29644, 2879, 2759
R_int	0.047
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.033, 0.069, 1.00
No. of reflections	2879
No. of parameters	216
No. of restraints	3
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.21, −0.19
Computer programs: APEX3 (Bruker, 2016), SAINT (Bruker, 2016), SHELXT2014/5 (Sheldrick, 2015a ), SHELXL2014/7 (Sheldrick, 2015b ), Mercury (Macrae et al., 2008 ), publCIF (Westrip, 2010 ) and PLATON (Spek, 2009 ).

Supporting information

CCDC reference: 1830268

Crystal structure: contains datablocks global, I. DOI: https://doi.org/10.1107/S2056989018004425/is5494sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989018004425/is5494Isup2.hkl

checkCIF report

Computing details top

Data collection: APEX3 (Bruker, 2016); cell refinement: SAINT (Bruker, 2016); data reduction: SAINT (Bruker, 2016); program(s) used to solve structure: SHELXT2014/5 (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2014/7 (Sheldrick, 2015b); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010) and PLATON (Spek, 2009).

(-)-(5R,7R,8S,9R,10S)-8-Methyl-7-[(5R)-3-methyl-2-oxooxolan-3-en-5-yl]-1-aza-6-oxatricyclo[8.3.0.0^5,9]tridecan-13-one monohydrate top

Crystal data top

C₁₇H₂₃NO₄·H₂O	D_x = 1.312 Mg m⁻³
M_r = 323.38	Melting point = 466–467 K
Orthorhombic, P2₁2₁2₁	Mo Kα radiation, λ = 0.71073 Å
a = 6.6180 (3) Å	Cell parameters from 9946 reflections
b = 7.1197 (3) Å	θ = 2.4–25.1°
c = 34.7351 (15) Å	µ = 0.10 mm⁻¹
V = 1636.65 (12) Å³	T = 90 K
Z = 4	Prism, pale yellow
F(000) = 696	0.23 × 0.20 × 0.18 mm

Data collection top

Bruker D8 Venture diffractometer	2879 independent reflections
Radiation source: fine-focus sealed tube	2759 reflections with I > 2σ(I)
Multilayered confocal mirror monochromator	R_int = 0.047
Detector resolution: 7.4074 pixels mm^-1	θ_max = 25.0°, θ_min = 2.4°
φ and ω scans	h = −7→7
Absorption correction: multi-scan (SADABS; Bruker, 2016)	k = −8→8
T_min = 0.98, T_max = 0.98	l = −41→41
29644 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)] = 0.033	Hydrogen site location: mixed
wR(F²) = 0.069	H atoms treated by a mixture of independent and constrained refinement
S = 1.00	w = 1/[σ²(F_o²) + 1.385P] where P = (F_o² + 2F_c²)/3
2879 reflections	(Δ/σ)_max < 0.001
216 parameters	Δρ_max = 0.21 e Å⁻³
3 restraints	Δρ_min = −0.19 e Å⁻³

Special details top

Experimental. IR (film): 2925, 2855, 1756, 1667, 1455, 1261, 1083, 802 cm^-1; ¹H NMR (500 MHz, CDCl₃): δ (p.p.m.) 6.97 (dq, J = 1.7, 1.4 Hz, 1H; H20), 4.89–4.86 (m, 1H; H16), 4.22 (dd, J = 8.3, 0.9 Hz, 1H; H7), 4.07–4.01 (m, 1H; H2B), 3.92 (ddd, J = 10.9, 6.9, 6.3 Hz, 1H; H10), 3.73 (ddd, J = 10.2, 9.7, 2.9 Hz, 1H; H5), 2.72–2.65 (m, 1H; H2A), 2.59–2.51 (m, 1H; H8), 2.47 (ddd, J = 12.0, 9.7, 6.9 Hz, 1H; H9), 2.42–2.31 (m, 2H; H12AB), 2.00–1.92 (m, 2H; H4A & H11A), 1.95 (dd, J = 1.7, 1.4 Hz, 3H; H22ABC), 1.74–1.59 (m, 2H; H3B & H11B), 1.45–1.28 (m, 2H; H3A & H4B), 1.24 (d, J = 6.6 Hz, 3H; H15ABC) ¹³C NMR (125 MHz, CDCl₃): δ (p.p.m.) 174.7 (C; C18), 174.1 (C; C13), 146.7 (CH; C19), 131.1 (C; C20), 80.6, 80.3, 80.0 (CH x3; C16, C7 & C5), 56.3 (CH; C10), 51.3 (CH; C9), 40.5 (CH₂; C2), 38.5 (CH; C8), 35.1 (CH₂; C12), 31.0 (CH₂; C11), 25.9 (CH₂; C4), 22.1 (CH₂; C3), 13.1 (CH₃; C22), 10.9 (CH₃; C15)

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.

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 > 2σ(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
N1	1.0068 (3)	0.5967 (3)	0.18662 (5)	0.0148 (4)
C2	1.0057 (4)	0.4003 (3)	0.17441 (6)	0.0163 (5)
H2A	0.8647	0.3539	0.1739	0.02*
H2B	1.0817	0.3241	0.1933	0.02*
C3	1.0999 (4)	0.3752 (4)	0.13469 (7)	0.0174 (5)
H3A	1.2346	0.4357	0.1346	0.021*
H3B	1.1204	0.2393	0.13	0.021*
C4	0.9764 (4)	0.4558 (3)	0.10156 (7)	0.0160 (5)
H4A	1.0537	0.4403	0.0774	0.019*
H4B	0.8499	0.3825	0.099	0.019*
C5	0.9231 (4)	0.6613 (3)	0.10638 (6)	0.0138 (5)
H5	1.0485	0.7338	0.1126	0.017*
O6	0.8410 (3)	0.7277 (2)	0.07027 (4)	0.0169 (4)
C7	0.6625 (4)	0.8368 (3)	0.07655 (7)	0.0165 (5)
H7	0.678	0.9594	0.0628	0.02*
C8	0.6556 (4)	0.8755 (3)	0.11996 (7)	0.0156 (5)
H8	0.7432	0.9872	0.1251	0.019*
C9	0.7626 (4)	0.7031 (3)	0.13668 (6)	0.0129 (5)
H9	0.6641	0.5966	0.1368	0.015*
C10	0.8418 (4)	0.7289 (3)	0.17783 (6)	0.0144 (5)
H10	0.7283	0.7068	0.1963	0.017*
C11	0.9401 (4)	0.9177 (3)	0.18706 (7)	0.0171 (5)
H11A	0.8389	1.0086	0.1967	0.021*
H11B	1.0069	0.9711	0.164	0.021*
C12	1.0951 (4)	0.8701 (4)	0.21821 (7)	0.0186 (6)
H12A	1.2148	0.9531	0.2164	0.022*
H12B	1.0354	0.8817	0.2442	0.022*
C13	1.1500 (4)	0.6692 (3)	0.20942 (7)	0.0165 (5)
O14	1.2991 (3)	0.5844 (3)	0.22177 (5)	0.0233 (4)
C15	0.4482 (4)	0.9164 (4)	0.13680 (7)	0.0218 (6)
H15A	0.382	1.0147	0.1216	0.033*
H15B	0.4629	0.9589	0.1635	0.033*
H15C	0.366	0.802	0.1362	0.033*
C16	0.4817 (4)	0.7338 (3)	0.05958 (6)	0.0180 (5)
H16	0.3564	0.8095	0.0639	0.022*
O17	0.4601 (3)	0.5530 (2)	0.07769 (5)	0.0184 (4)
C18	0.4827 (4)	0.4170 (4)	0.05060 (7)	0.0196 (5)
C19	0.5050 (4)	0.5060 (4)	0.01261 (7)	0.0207 (6)
C20	0.5018 (4)	0.6892 (4)	0.01778 (7)	0.0203 (6)
H20	0.5109	0.7799	−0.0022	0.024*
O21	0.4813 (3)	0.2530 (3)	0.05902 (5)	0.0289 (5)
C22	0.5281 (4)	0.3907 (4)	−0.02303 (7)	0.0292 (7)
H22A	0.5321	0.4736	−0.0455	0.044*
H22B	0.4134	0.3044	−0.0253	0.044*
H22C	0.654	0.3185	−0.0216	0.044*
O1W	0.5010 (4)	0.2300 (3)	0.21248 (6)	0.0424 (6)
H1WA	0.440 (5)	0.334 (4)	0.2174 (10)	0.064*
H1WB	0.549 (6)	0.198 (5)	0.2345 (7)	0.064*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
N1	0.0184 (10)	0.0129 (10)	0.0131 (9)	0.0011 (10)	−0.0012 (9)	0.0001 (8)
C2	0.0202 (12)	0.0116 (11)	0.0170 (11)	−0.0013 (12)	−0.0012 (11)	0.0025 (9)
C3	0.0188 (13)	0.0137 (12)	0.0197 (13)	0.0027 (11)	−0.0005 (11)	−0.0013 (10)
C4	0.0149 (13)	0.0179 (13)	0.0152 (11)	0.0027 (11)	0.0027 (11)	−0.0030 (10)
C5	0.0147 (12)	0.0168 (12)	0.0098 (11)	−0.0005 (10)	−0.0003 (10)	0.0009 (9)
O6	0.0151 (9)	0.0225 (9)	0.0133 (8)	0.0052 (8)	0.0010 (7)	0.0030 (7)
C7	0.0147 (12)	0.0161 (12)	0.0186 (12)	0.0030 (11)	0.0018 (10)	0.0049 (10)
C8	0.0164 (12)	0.0120 (12)	0.0184 (12)	0.0001 (11)	−0.0021 (10)	0.0000 (10)
C9	0.0123 (11)	0.0130 (12)	0.0134 (11)	0.0000 (10)	0.0018 (10)	−0.0001 (10)
C10	0.0157 (12)	0.0146 (12)	0.0130 (11)	0.0009 (11)	0.0038 (10)	0.0002 (10)
C11	0.0204 (13)	0.0133 (12)	0.0177 (12)	0.0015 (11)	0.0027 (10)	−0.0031 (10)
C12	0.0230 (13)	0.0186 (13)	0.0141 (12)	−0.0010 (11)	0.0010 (11)	−0.0045 (10)
C13	0.0220 (14)	0.0183 (13)	0.0092 (11)	−0.0005 (12)	0.0011 (10)	0.0023 (10)
O14	0.0257 (10)	0.0215 (9)	0.0227 (9)	0.0035 (9)	−0.0099 (8)	−0.0002 (8)
C15	0.0203 (13)	0.0235 (13)	0.0217 (13)	0.0057 (12)	−0.0004 (11)	−0.0050 (11)
C16	0.0171 (13)	0.0193 (12)	0.0177 (11)	0.0038 (11)	0.0002 (11)	0.0030 (10)
O17	0.0194 (9)	0.0202 (9)	0.0157 (8)	−0.0035 (8)	−0.0002 (7)	0.0015 (7)
C18	0.0139 (12)	0.0230 (14)	0.0220 (13)	0.0017 (12)	−0.0053 (11)	−0.0009 (11)
C19	0.0133 (12)	0.0297 (14)	0.0190 (12)	0.0060 (13)	−0.0038 (11)	−0.0020 (11)
C20	0.0143 (13)	0.0297 (14)	0.0169 (12)	0.0007 (13)	−0.0022 (11)	0.0058 (10)
O21	0.0334 (11)	0.0210 (10)	0.0324 (10)	0.0006 (10)	−0.0099 (10)	0.0010 (8)
C22	0.0267 (15)	0.0374 (16)	0.0234 (14)	0.0100 (15)	−0.0053 (12)	−0.0085 (12)
O1W	0.0562 (15)	0.0365 (12)	0.0345 (11)	0.0201 (13)	−0.0228 (12)	−0.0136 (10)

Geometric parameters (Å, º) top

N1—C13	1.338 (3)	C10—H10	1.0
N1—C2	1.461 (3)	C11—C12	1.529 (3)
N1—C10	1.474 (3)	C11—H11A	0.99
C2—C3	1.525 (3)	C11—H11B	0.99
C2—H2A	0.99	C12—C13	1.507 (3)
C2—H2B	0.99	C12—H12A	0.99
C3—C4	1.524 (3)	C12—H12B	0.99
C3—H3A	0.99	C13—O14	1.234 (3)
C3—H3B	0.99	C15—H15A	0.98
C4—C5	1.515 (3)	C15—H15B	0.98
C4—H4A	0.99	C15—H15C	0.98
C4—H4B	0.99	C16—O17	1.440 (3)
C5—O6	1.446 (3)	C16—C20	1.492 (3)
C5—C9	1.525 (3)	C16—H16	1.0
C5—H5	1.0	O17—C18	1.359 (3)
O6—C7	1.431 (3)	C18—O21	1.204 (3)
C7—C16	1.522 (4)	C18—C19	1.471 (3)
C7—C8	1.534 (3)	C19—C20	1.317 (4)
C7—H7	1.0	C19—C22	1.493 (3)
C8—C15	1.521 (3)	C20—H20	0.95
C8—C9	1.531 (3)	C22—H22A	0.98
C8—H8	1.0	C22—H22B	0.98
C9—C10	1.533 (3)	C22—H22C	0.98
C9—H9	1.0	O1W—H1WA	0.86 (2)
C10—C11	1.528 (3)	O1W—H1WB	0.86 (2)

C13—N1—C2	123.0 (2)	C11—C10—C9	116.5 (2)
C13—N1—C10	113.62 (19)	N1—C10—H10	108.9
C2—N1—C10	123.2 (2)	C11—C10—H10	108.9
N1—C2—C3	111.90 (19)	C9—C10—H10	108.9
N1—C2—H2A	109.2	C10—C11—C12	103.9 (2)
C3—C2—H2A	109.2	C10—C11—H11A	111.0
N1—C2—H2B	109.2	C12—C11—H11A	111.0
C3—C2—H2B	109.2	C10—C11—H11B	111.0
H2A—C2—H2B	107.9	C12—C11—H11B	111.0
C4—C3—C2	114.8 (2)	H11A—C11—H11B	109.0
C4—C3—H3A	108.6	C13—C12—C11	103.2 (2)
C2—C3—H3A	108.6	C13—C12—H12A	111.1
C4—C3—H3B	108.6	C11—C12—H12A	111.1
C2—C3—H3B	108.6	C13—C12—H12B	111.1
H3A—C3—H3B	107.5	C11—C12—H12B	111.1
C5—C4—C3	113.9 (2)	H12A—C12—H12B	109.1
C5—C4—H4A	108.8	O14—C13—N1	125.7 (2)
C3—C4—H4A	108.8	O14—C13—C12	125.9 (2)
C5—C4—H4B	108.8	N1—C13—C12	108.4 (2)
C3—C4—H4B	108.8	C8—C15—H15A	109.5
H4A—C4—H4B	107.7	C8—C15—H15B	109.5
O6—C5—C4	107.90 (18)	H15A—C15—H15B	109.5
O6—C5—C9	105.84 (19)	C8—C15—H15C	109.5
C4—C5—C9	115.3 (2)	H15A—C15—H15C	109.5
O6—C5—H5	109.2	H15B—C15—H15C	109.5
C4—C5—H5	109.2	O17—C16—C20	104.1 (2)
C9—C5—H5	109.2	O17—C16—C7	109.86 (19)
C7—O6—C5	110.83 (17)	C20—C16—C7	114.2 (2)
O6—C7—C16	109.18 (19)	O17—C16—H16	109.5
O6—C7—C8	105.77 (19)	C20—C16—H16	109.5
C16—C7—C8	116.4 (2)	C7—C16—H16	109.5
O6—C7—H7	108.4	C18—O17—C16	108.90 (17)
C16—C7—H7	108.4	O21—C18—O17	121.5 (2)
C8—C7—H7	108.4	O21—C18—C19	129.5 (2)
C15—C8—C9	115.1 (2)	O17—C18—C19	109.0 (2)
C15—C8—C7	116.1 (2)	C20—C19—C18	107.6 (2)
C9—C8—C7	102.43 (19)	C20—C19—C22	131.2 (2)
C15—C8—H8	107.6	C18—C19—C22	121.2 (2)
C9—C8—H8	107.6	C19—C20—C16	110.2 (2)
C7—C8—H8	107.6	C19—C20—H20	124.9
C5—C9—C8	102.52 (19)	C16—C20—H20	124.9
C5—C9—C10	115.4 (2)	C19—C22—H22A	109.5
C8—C9—C10	114.6 (2)	C19—C22—H22B	109.5
C5—C9—H9	108.0	H22A—C22—H22B	109.5
C8—C9—H9	108.0	C19—C22—H22C	109.5
C10—C9—H9	108.0	H22A—C22—H22C	109.5
N1—C10—C11	101.69 (19)	H22B—C22—H22C	109.5
N1—C10—C9	111.73 (18)	H1WA—O1W—H1WB	103 (3)

C13—N1—C2—C3	−96.5 (3)	C5—C9—C10—C11	77.7 (3)
C10—N1—C2—C3	89.0 (3)	C8—C9—C10—C11	−41.0 (3)
N1—C2—C3—C4	−69.5 (3)	N1—C10—C11—C12	−28.7 (2)
C2—C3—C4—C5	54.7 (3)	C9—C10—C11—C12	−150.4 (2)
C3—C4—C5—O6	169.37 (19)	C10—C11—C12—C13	28.6 (2)
C3—C4—C5—C9	−72.6 (3)	C2—N1—C13—O14	2.5 (4)
C4—C5—O6—C7	134.6 (2)	C10—N1—C13—O14	177.4 (2)
C9—C5—O6—C7	10.7 (3)	C2—N1—C13—C12	−176.1 (2)
C5—O6—C7—C16	−113.8 (2)	C10—N1—C13—C12	−1.1 (3)
C5—O6—C7—C8	12.1 (3)	C11—C12—C13—O14	163.8 (2)
O6—C7—C8—C15	−155.9 (2)	C11—C12—C13—N1	−17.7 (2)
C16—C7—C8—C15	−34.4 (3)	O6—C7—C16—O17	59.7 (2)
O6—C7—C8—C9	−29.6 (2)	C8—C7—C16—O17	−59.9 (3)
C16—C7—C8—C9	91.8 (2)	O6—C7—C16—C20	−56.8 (3)
O6—C5—C9—C8	−28.7 (2)	C8—C7—C16—C20	−176.4 (2)
C4—C5—C9—C8	−147.9 (2)	C20—C16—O17—C18	4.8 (3)
O6—C5—C9—C10	−153.92 (19)	C7—C16—O17—C18	−117.8 (2)
C4—C5—C9—C10	86.9 (3)	C16—O17—C18—O21	176.1 (3)
C15—C8—C9—C5	161.9 (2)	C16—O17—C18—C19	−4.3 (3)
C7—C8—C9—C5	35.0 (2)	O21—C18—C19—C20	−178.6 (3)
C15—C8—C9—C10	−72.4 (3)	O17—C18—C19—C20	1.9 (3)
C7—C8—C9—C10	160.7 (2)	O21—C18—C19—C22	0.8 (4)
C13—N1—C10—C11	19.3 (2)	O17—C18—C19—C22	−178.7 (2)
C2—N1—C10—C11	−165.7 (2)	C18—C19—C20—C16	1.2 (3)
C13—N1—C10—C9	144.3 (2)	C22—C19—C20—C16	−178.1 (3)
C2—N1—C10—C9	−40.7 (3)	O17—C16—C20—C19	−3.7 (3)
C5—C9—C10—N1	−38.5 (3)	C7—C16—C20—C19	116.1 (3)
C8—C9—C10—N1	−157.2 (2)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1W—H1WA···O14ⁱ	0.86 (2)	2.02 (2)	2.874 (3)	173 (3)
O1W—H1WB···O14ⁱⁱ	0.86 (2)	1.99 (2)	2.835 (3)	167 (3)
C7—H7···O21ⁱⁱⁱ	1.00	2.47	3.254 (3)	135
C22—H22C···O21^iv	0.98	2.58	3.407 (3)	142

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

Acknowledgements

This research was partially supported by the Keio Gijuku Fukuzawa Memorial Fund for the Advancement of Education and Research. We also thank Professor S. Ohba (Keio University, Japan) for his fruitful advice.

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