organic compounds
Bis(4-acetoxy-N-ethyl-N-n-propyltryptammonium) fumarate–fumaric acid (1/1)
aUniversity of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, MA 02747, USA, bUniversity of Washington, Department of Psychiatry & Behavioral Sciences, Center for Novel Therapeutics in Addiction Psychiatry, 1959 NE Pacific Street, Box 356560, Seattle, WA 98195, USA, and cCaaMTech, Inc., 58 East Sunset Way, Suite 209, Issaquah, WA 98027, USA
*Correspondence e-mail: dmanke@umassd.edu
The solid-state structure of the title salt/adduct (systemic name: bis{[2-(4-acetyloxy-1H-indol-3-yl)ethyl](ethyl)propylazanium} but-2-enedioate–(E)-butenedioic acid (1/1)), 2C17H25N2O2+·C4H2O42−·C4H4O4, was determined by single-crystal X-ray diffraction. The consists of a singly protonated tryptammonium cation, one half of a fumarate dianion and one half of a fumaric acid molecule. In the crystal, the ions and molecules are linked together in infinite chains propagating along [001] through a series of N—H⋯O and O—H⋯O hydrogen bonds.
Keywords: crystal structure; tryptamines; indoles; fumarates; hydrogen bonds.
CCDC reference: 2293403
Structure description
Psilocybin (4-phosphoryloxy-N,N-dimethyltryptamine) is a natural product found in many species of mushrooms. It functions as a prodrug of psilocin (4-hydroxy-N,N-dimethyltryptamine) via enzymatic hydrolysis of the phosphoryloxy group to generate the active psychedelic. Psilocin is an agonist at serotonin (5-hydroxytryptamine; 5-HT) receptors, most notably the serotonin 2A (5-HT2A) receptor, which is primarily responsible for the psychoactive and therapeutic effects of the molecule. Psilocybin has shown promise in the treatment of pervasive human disorders, including depression (Carhart-Harris et al., 2021; Davis et al., 2021; von Rotz et al., 2023), end-of-life anxiety (Grob et al., 2011; Griffiths et al., 2016), obsessive-compulsive disorders (Moreno et al., 2006), tobacco-use disorder (Johnson et al., 2014) and alcohol-use disorder (Bogenschutz et al., 2022). The interest in psilocybin has also generated interest in the structure–activity relationship (SAR) of analogous compounds.
We previously reported two crystalline forms of psilacetin (4-acetoxy-N,N-dimethyltryptamine) which, like psilocybin, also functions as a prodrug of psilocin. Our recent in vivo studies in mice demonstrate that psilacetin is more efficient than psilocybin at delivering psilocin, resulting in increased potency at equimolar amounts. This is supported by background hydrolysis rates which show psilacetin to hydrolyze forty times faster than psilocybin, but also demonstrate that the hydrolysis of either prodrug in the body must be enzymatic (Glatfelter et al., 2022b). 4-Acetoxy-N-ethyl-N-n-propyltryptamine (4-AcO-EPT) is a putative prodrug of the synthetic psychedelic, and psilocin analogue, 4-hydroxy-N-ethyl-N-n-propyltryptamine (4-HO-EPT). When competitive binding assays are compared, binding is observed for 4-HO-EPT across many more receptors than 4-AcO-EPT, and significantly stronger binding is observed at most receptors where 4-AcO-EPT is also competitive (Glatfelter et al., 2023). 4-HO-EPT showed a substantial increase in in vitro functional assays for 5-HT2A agonism over 4-AcO-EPT, with an observed EC50 of 4.24 nM, compared to an EC50 of 24.0 nM for the ester.
One thing that is not clear from the in vitro and in vivo studies of 4-AcO-EPT is the exact chemical composition of the experimentally studied compound. Klein et al. reported in vitro and in vivo data for `4-AcO-EPT fumarate', which describes a doubly deprotonated dicarboxylic acid and a 2:1 molar ratio of tryptamine to fumaric acid equivalent. However, the molecular weight calculations in the paper indicate that the compound studied had a 1:1 ratio of tryptamine to fumaric acid, i.e. 4-AcO-EPT hydrofumarate. In our prior study, we reported 4-AcO-EPT hydrofumarate based upon NMR data demonstrating a 1:1 ratio of tryptamine to fumaric acid equivalent, consistent with a singly deprotonated dicarboxylic acid for each tryptamine. However, this work reveals an error in this assignment, further highlighting the necessity of isolating a single crystal and performing diffraction studies when determining the exact nature of crystalline tryptamine solids. Herein we report the compound to be neither the fumarate nor the hydrofumarate, but rather bis(4-acetoxy-N-ethyl-N-n-propyltryptammonium) fumarate–fumaric acid.
The molecular structure of 4-AcO-EPT fumarate–fumaric acid is shown in Fig. 1. The contains one 4-acetoxy-N-ethyl-N-n-propyltryptammonium (C17H25N2O2+) cation, one half of a fumarate (C2HO2−) dianion, and one half of a fumaric acid (C2H2O2) molecule. The indole ring system of the cation is near planar with a r.m.s. deviation from planarity of 0.018 Å. The ethylamino arm is disordered over two orientations in a 0.895 (7):0.105 (7) ratio. The major component of the ethylamino arm is nearly co-planar with the indole ring, showing a C7—C8—C9—C10 torsion angle of −176.3 (2)°. The ethyl and n-propyl groups are disordered over two sets of sites with a 0.741 (6):0.259 (6) ratio, with the methylene carbon atoms of the n-propyl groups being in close proximity to the two ethyl group C atoms. The complete fumarate dianion is generated through crystallographic inversion symmetry, and is near planar with an r.m.s. deviation from planarity of 0.009 Å. The complete fumaric acid dianion in generated similarly and only slightly less planar with an r.m.s. deviation of 0.070 Å.
In the extended structure, the 4-acetoxy-N-ethyl-N-n-propyltryptammonium cations, fumarate dianions and neutral fumaric acid molecules are linked together in infinite one-dimensional chain propagating along [001]. The tryptammonium cations are linked to the fumarate dianions through N2—H2⋯O5 hydrogen bonds, and the fumaric acid molecules are linked to the fumarate dianions through O4—H4A⋯O6 hydrogen bonds (Table 1). The packing of 4-AcO-EPT fumarate–fumaric acid is shown in Fig. 2.
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In addition to the structure reported here, there have been ten other 4-acetoxytryptamine structures reported in the literature, which include one monoalkyltryptamine, 4-acetoxy-N-methyltryptamine as its chloride salt (Glatfelter et al., 2022b), five dialkyltrypamines 4-acetoxy-N,N-dimethyltryptamine as its hydrofumarate (Chadeayne et al., 2019b) and fumarate (Chadeayne et al., 2019a) salts, 4-acetoxy-N-methyl-N-ethyltryptamine and 4-acetoxy-N-methyl-N-allyltryptamine as hydrofumarate salts, and 4-acetoxy-N,N-diallyltryptamine as a fumarate-fumaric acid structure similar to that reported in this manuscript (Pham et al., 2021). There are four trialkyltryptamine structures reported, 4-acetoxy-N,N,N-trimethyltryptamine (Chadeayne et al., 2020), 4-acetoxy-N,N-dimethyl-N-n-propyltryptamine, 4-acetoxy-N,N-dimethyl-N-isopropyltryptamine, 4-acetoxy-N,N-dimethyl-N-ethyltryptamine all as their iodide salts (Glatfelter et al., 2022a). There are also three other 4-carboxylic ester prodrug structure reported, which are 4-propionoxy-N,N-dimethyltryptamine as its hydrofumarate salt (Glatfelter et al., 2023) and two structures of the zwitterionic 4-glutarato-N,N-diisopropyltryptamine (Naeem et al., 2022).
Synthesis and crystallization
Crystals of bis(N-ethyl-N-n-propyltryptammonium) fumarate–fumaric acid were grown from the slow evaporation of an aqueous solution of `4-AcO-EPT fumarate' obtained from ChemLogix.
Refinement
Crystal data, data collection and structure . Atoms H1, H2 and H4A were found from a Fourier difference map and allowed to refine with restrained N—H distances of 0.87 (1) Å and 1.20 Ueq of parent N atoms, and O—H distances of 0.88 (1) Å and 1.50 Ueq of parent O atoms. All other hydrogen atoms were placed in calculated positions with appropriate riding parameters. Ethyl and propyl groups showed overlap disorder with respect to each other and were treated using SADI C—C distance restrains, DELU rigid body restraints, and ISOR isotropic restraints.
details are summarized in Table 2Structural data
CCDC reference: 2293403
https://doi.org/10.1107/S2414314623007794/hb4447sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2414314623007794/hb4447Isup2.hkl
Data collection: APEX 3 (Bruker, 2018); cell
SAINT (Bruker, 2018); data reduction: SAINT (Bruker, 2018); program(s) used to solve structure: SHELXT2014/5 (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2019/3 (Sheldrick, 2015b); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: publCIF (Westrip, 2010).C17H25N2O2+·0.5C4H2O42−·0.5C4H4O4 | Z = 2 |
Mr = 404.45 | F(000) = 432 |
Triclinic, P1 | Dx = 1.283 Mg m−3 |
a = 8.7642 (8) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 10.8653 (9) Å | Cell parameters from 8239 reflections |
c = 12.6564 (11) Å | θ = 2.8–26.3° |
α = 65.094 (3)° | µ = 0.09 mm−1 |
β = 75.354 (3)° | T = 297 K |
γ = 76.718 (3)° | BLOCK, colourless |
V = 1047.12 (16) Å3 | 0.22 × 0.2 × 0.12 mm |
Bruker D8 Venture CMOS diffractometer | 3227 reflections with I > 2σ(I) |
φ and ω scans | Rint = 0.041 |
Absorption correction: multi-scan (SADABS; Krause et al., 2015) | θmax = 26.4°, θmin = 2.8° |
Tmin = 0.721, Tmax = 0.745 | h = −10→10 |
28835 measured reflections | k = −13→13 |
4251 independent reflections | l = −15→15 |
Refinement on F2 | 115 restraints |
Least-squares matrix: full | Hydrogen site location: mixed |
R[F2 > 2σ(F2)] = 0.056 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.137 | w = 1/[σ2(Fo2) + (0.0482P)2 + 0.5076P] where P = (Fo2 + 2Fc2)/3 |
S = 1.03 | (Δ/σ)max < 0.001 |
4251 reflections | Δρmax = 0.35 e Å−3 |
341 parameters | Δρmin = −0.22 e Å−3 |
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. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
O1 | 0.27647 (17) | −0.80720 (14) | 1.03014 (13) | 0.0591 (4) | |
O2 | 0.5398 (2) | −0.8121 (2) | 0.97964 (16) | 0.0830 (6) | |
O3 | 0.1315 (2) | −0.02323 (17) | 0.80306 (14) | 0.0773 (5) | |
O4 | −0.0658 (2) | 0.14933 (15) | 0.76151 (12) | 0.0627 (4) | |
H4A | −0.024 (3) | 0.168 (3) | 0.6856 (11) | 0.094* | |
O5 | 0.1155 (2) | 0.21798 (14) | 0.36799 (12) | 0.0647 (4) | |
O6 | 0.0480 (2) | 0.23432 (14) | 0.54237 (12) | 0.0604 (4) | |
N1 | 0.1435 (3) | −0.3427 (2) | 0.82261 (18) | 0.0772 (6) | |
H1 | 0.096 (3) | −0.272 (2) | 0.772 (2) | 0.093* | |
N2 | 0.2880 (2) | −0.56997 (17) | 1.29957 (15) | 0.0529 (4) | |
H2 | 0.220 (2) | −0.6296 (18) | 1.3266 (19) | 0.063* | |
C1 | 0.1785 (3) | −0.3645 (2) | 0.9298 (2) | 0.0744 (7) | |
H1A | 0.169952 | −0.296392 | 0.958025 | 0.089* | |
C2 | 0.1695 (2) | −0.4643 (2) | 0.80871 (18) | 0.0583 (6) | |
C3 | 0.1561 (3) | −0.4964 (3) | 0.71526 (19) | 0.0694 (7) | |
H3 | 0.123104 | −0.428623 | 0.647012 | 0.083* | |
C4 | 0.1927 (3) | −0.6296 (3) | 0.7277 (2) | 0.0700 (7) | |
H4 | 0.187362 | −0.652530 | 0.665853 | 0.084* | |
C5 | 0.2379 (3) | −0.7321 (3) | 0.8300 (2) | 0.0629 (6) | |
H5 | 0.259661 | −0.822787 | 0.836792 | 0.075* | |
C6 | 0.2508 (2) | −0.7010 (2) | 0.92117 (17) | 0.0508 (5) | |
C7 | 0.2216 (2) | −0.5657 (2) | 0.91297 (16) | 0.0491 (5) | |
C8 | 0.2275 (3) | −0.5003 (2) | 0.98849 (17) | 0.0558 (5) | |
C9 | 0.2847 (3) | −0.5751 (2) | 1.10637 (19) | 0.0527 (8) | 0.895 (7) |
H9A | 0.223769 | −0.650132 | 1.155249 | 0.063* | 0.895 (7) |
H9B | 0.395507 | −0.614059 | 1.092468 | 0.063* | 0.895 (7) |
C10 | 0.2694 (4) | −0.4845 (3) | 1.17281 (19) | 0.0490 (8) | 0.895 (7) |
H10A | 0.350332 | −0.424109 | 1.135008 | 0.059* | 0.895 (7) |
H10B | 0.165866 | −0.428210 | 1.170602 | 0.059* | 0.895 (7) |
C9A | 0.182 (3) | −0.524 (3) | 1.1193 (10) | 0.069 (8) | 0.105 (7) |
H9AA | 0.093424 | −0.456113 | 1.130631 | 0.083* | 0.105 (7) |
H9AB | 0.149277 | −0.613887 | 1.164253 | 0.083* | 0.105 (7) |
C10A | 0.320 (2) | −0.514 (3) | 1.1640 (9) | 0.089 (12) | 0.105 (7) |
H10C | 0.337116 | −0.419607 | 1.132379 | 0.107* | 0.105 (7) |
H10D | 0.415098 | −0.566634 | 1.136772 | 0.107* | 0.105 (7) |
C11 | 0.4486 (5) | −0.6529 (6) | 1.3152 (4) | 0.0547 (11) | 0.741 (6) |
H11A | 0.528096 | −0.591640 | 1.285811 | 0.066* | 0.741 (6) |
H11B | 0.474027 | −0.708899 | 1.268550 | 0.066* | 0.741 (6) |
C12 | 0.4558 (6) | −0.7450 (5) | 1.4437 (4) | 0.0717 (12) | 0.741 (6) |
H12A | 0.365280 | −0.795179 | 1.477680 | 0.086* | 0.741 (6) |
H12B | 0.450747 | −0.689565 | 1.488122 | 0.086* | 0.741 (6) |
C13 | 0.6093 (5) | −0.8451 (4) | 1.4525 (4) | 0.1003 (16) | 0.741 (6) |
H13A | 0.605799 | −0.911371 | 1.532280 | 0.150* | 0.741 (6) |
H13B | 0.697996 | −0.796160 | 1.430637 | 0.150* | 0.741 (6) |
H13C | 0.620986 | −0.891082 | 1.400040 | 0.150* | 0.741 (6) |
C14 | 0.2341 (7) | −0.4813 (5) | 1.3701 (4) | 0.0505 (10) | 0.741 (6) |
H14A | 0.215332 | −0.540227 | 1.453431 | 0.061* | 0.741 (6) |
H14B | 0.133039 | −0.426905 | 1.350644 | 0.061* | 0.741 (6) |
C15 | 0.3488 (6) | −0.3845 (5) | 1.3515 (5) | 0.0649 (12) | 0.741 (6) |
H15A | 0.300869 | −0.327687 | 1.395530 | 0.097* | 0.741 (6) |
H15B | 0.372168 | −0.327944 | 1.268845 | 0.097* | 0.741 (6) |
H15C | 0.445657 | −0.437161 | 1.378303 | 0.097* | 0.741 (6) |
C11A | 0.266 (3) | −0.493 (2) | 1.3766 (17) | 0.090 (7) | 0.259 (6) |
H11C | 0.282534 | −0.553750 | 1.456143 | 0.108* | 0.259 (6) |
H11D | 0.160829 | −0.439951 | 1.380442 | 0.108* | 0.259 (6) |
C12A | 0.394 (2) | −0.3992 (17) | 1.3153 (14) | 0.077 (4) | 0.259 (6) |
H12C | 0.499877 | −0.450786 | 1.312186 | 0.093* | 0.259 (6) |
H12D | 0.378019 | −0.336885 | 1.235901 | 0.093* | 0.259 (6) |
C13A | 0.3632 (14) | −0.3249 (12) | 1.3981 (10) | 0.084 (3) | 0.259 (6) |
H13D | 0.442001 | −0.265190 | 1.373427 | 0.125* | 0.259 (6) |
H13E | 0.368967 | −0.390507 | 1.477188 | 0.125* | 0.259 (6) |
H13F | 0.259198 | −0.271806 | 1.396039 | 0.125* | 0.259 (6) |
C14A | 0.439 (2) | −0.671 (2) | 1.3038 (19) | 0.100 (9) | 0.259 (6) |
H14C | 0.526145 | −0.616857 | 1.265809 | 0.121* | 0.259 (6) |
H14D | 0.437114 | −0.716748 | 1.253028 | 0.121* | 0.259 (6) |
C15A | 0.487 (3) | −0.783 (2) | 1.4176 (17) | 0.129 (8) | 0.259 (6) |
H15D | 0.480279 | −0.871008 | 1.419487 | 0.194* | 0.259 (6) |
H15E | 0.416676 | −0.769476 | 1.484596 | 0.194* | 0.259 (6) |
H15F | 0.594408 | −0.779507 | 1.420176 | 0.194* | 0.259 (6) |
C16 | 0.4261 (3) | −0.8539 (2) | 1.0513 (2) | 0.0568 (5) | |
C17 | 0.4260 (4) | −0.9596 (2) | 1.1741 (2) | 0.0785 (7) | |
H17A | 0.346455 | −0.928264 | 1.228438 | 0.118* | |
H17B | 0.528807 | −0.974856 | 1.194762 | 0.118* | |
H17C | 0.402813 | −1.043724 | 1.177925 | 0.118* | |
C18 | 0.0174 (3) | 0.0486 (2) | 0.83333 (17) | 0.0506 (5) | |
C19 | −0.0428 (3) | 0.0340 (2) | 0.95887 (17) | 0.0524 (5) | |
H19 | −0.145138 | 0.075199 | 0.978794 | 0.063* | |
C20 | 0.0593 (2) | 0.17179 (18) | 0.47610 (16) | 0.0453 (4) | |
C21 | 0.0000 (2) | 0.03642 (17) | 0.52990 (15) | 0.0434 (4) | |
H21 | −0.039388 | 0.001939 | 0.610781 | 0.052* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0588 (9) | 0.0495 (8) | 0.0537 (8) | −0.0130 (7) | −0.0083 (7) | −0.0035 (6) |
O2 | 0.0573 (10) | 0.0979 (13) | 0.0694 (11) | −0.0046 (9) | −0.0113 (8) | −0.0121 (10) |
O3 | 0.0949 (13) | 0.0707 (10) | 0.0511 (9) | 0.0132 (9) | −0.0160 (9) | −0.0199 (8) |
O4 | 0.0790 (11) | 0.0586 (9) | 0.0415 (8) | −0.0005 (8) | −0.0137 (7) | −0.0136 (7) |
O5 | 0.0983 (12) | 0.0531 (8) | 0.0384 (7) | −0.0426 (8) | 0.0083 (7) | −0.0087 (6) |
O6 | 0.0938 (11) | 0.0453 (8) | 0.0433 (8) | −0.0271 (7) | −0.0052 (7) | −0.0133 (6) |
N1 | 0.0837 (15) | 0.0567 (12) | 0.0508 (12) | 0.0138 (10) | −0.0049 (10) | 0.0016 (9) |
N2 | 0.0529 (10) | 0.0473 (9) | 0.0487 (9) | −0.0206 (7) | −0.0061 (8) | −0.0041 (7) |
C1 | 0.0951 (19) | 0.0511 (12) | 0.0548 (14) | −0.0016 (12) | 0.0072 (12) | −0.0151 (10) |
C2 | 0.0460 (11) | 0.0620 (13) | 0.0434 (11) | 0.0019 (9) | −0.0040 (9) | −0.0049 (9) |
C3 | 0.0475 (12) | 0.102 (2) | 0.0396 (11) | −0.0074 (12) | −0.0119 (9) | −0.0088 (12) |
C4 | 0.0571 (14) | 0.100 (2) | 0.0534 (13) | −0.0204 (13) | −0.0075 (11) | −0.0270 (13) |
C5 | 0.0560 (13) | 0.0737 (14) | 0.0624 (14) | −0.0216 (11) | −0.0037 (10) | −0.0270 (12) |
C6 | 0.0431 (10) | 0.0546 (11) | 0.0450 (11) | −0.0123 (8) | −0.0076 (8) | −0.0072 (9) |
C7 | 0.0442 (10) | 0.0512 (11) | 0.0377 (10) | −0.0062 (8) | −0.0053 (8) | −0.0051 (8) |
C8 | 0.0665 (13) | 0.0468 (11) | 0.0402 (10) | −0.0101 (9) | 0.0004 (9) | −0.0079 (8) |
C9 | 0.0639 (17) | 0.0400 (12) | 0.0419 (12) | −0.0031 (10) | −0.0032 (10) | −0.0096 (9) |
C10 | 0.0513 (16) | 0.0403 (12) | 0.0436 (13) | −0.0108 (11) | 0.0010 (10) | −0.0080 (10) |
C9A | 0.068 (11) | 0.075 (11) | 0.070 (11) | −0.018 (8) | −0.013 (8) | −0.028 (8) |
C10A | 0.070 (13) | 0.094 (15) | 0.092 (15) | −0.033 (9) | −0.031 (9) | −0.004 (9) |
C11 | 0.0516 (19) | 0.0473 (18) | 0.058 (2) | −0.0096 (14) | −0.0113 (15) | −0.0116 (17) |
C12 | 0.066 (2) | 0.073 (2) | 0.063 (2) | 0.0052 (19) | −0.0225 (18) | −0.0152 (19) |
C13 | 0.077 (3) | 0.088 (3) | 0.094 (3) | 0.008 (2) | −0.025 (2) | 0.001 (2) |
C14 | 0.057 (2) | 0.0467 (17) | 0.0506 (19) | −0.0126 (15) | −0.0136 (16) | −0.0163 (14) |
C15 | 0.064 (3) | 0.057 (2) | 0.085 (3) | −0.0126 (18) | −0.019 (2) | −0.033 (2) |
C11A | 0.082 (9) | 0.097 (9) | 0.095 (9) | −0.022 (5) | −0.027 (5) | −0.028 (5) |
C12A | 0.081 (7) | 0.071 (6) | 0.079 (6) | −0.020 (4) | −0.015 (5) | −0.024 (4) |
C13A | 0.089 (7) | 0.081 (6) | 0.082 (7) | −0.016 (5) | −0.014 (5) | −0.032 (5) |
C14A | 0.115 (10) | 0.089 (9) | 0.106 (9) | −0.035 (5) | −0.011 (5) | −0.040 (5) |
C15A | 0.134 (12) | 0.127 (11) | 0.113 (10) | 0.023 (9) | −0.024 (8) | −0.053 (7) |
C16 | 0.0644 (14) | 0.0473 (11) | 0.0556 (12) | −0.0028 (10) | −0.0133 (11) | −0.0178 (9) |
C17 | 0.101 (2) | 0.0540 (13) | 0.0629 (15) | 0.0052 (13) | −0.0234 (14) | −0.0089 (11) |
C18 | 0.0631 (13) | 0.0458 (10) | 0.0445 (11) | −0.0113 (9) | −0.0088 (9) | −0.0173 (9) |
C19 | 0.0596 (12) | 0.0467 (11) | 0.0471 (11) | −0.0105 (9) | −0.0083 (9) | −0.0135 (8) |
C20 | 0.0537 (11) | 0.0373 (9) | 0.0385 (10) | −0.0149 (8) | −0.0042 (8) | −0.0064 (8) |
C21 | 0.0521 (10) | 0.0389 (9) | 0.0312 (9) | −0.0166 (8) | −0.0007 (8) | −0.0042 (7) |
O1—C6 | 1.408 (2) | C10A—H10D | 0.9700 |
O1—C16 | 1.343 (3) | C11—H11A | 0.9700 |
O2—C16 | 1.194 (3) | C11—H11B | 0.9700 |
O3—C18 | 1.206 (3) | C11—C12 | 1.518 (5) |
O4—H4A | 0.889 (10) | C12—H12A | 0.9700 |
O4—C18 | 1.299 (2) | C12—H12B | 0.9700 |
O5—C20 | 1.250 (2) | C12—C13 | 1.518 (5) |
O6—C20 | 1.258 (2) | C13—H13A | 0.9600 |
N1—H1 | 0.869 (10) | C13—H13B | 0.9600 |
N1—C1 | 1.377 (3) | C13—H13C | 0.9600 |
N1—C2 | 1.366 (3) | C14—H14A | 0.9700 |
N2—H2 | 0.880 (10) | C14—H14B | 0.9700 |
N2—C10 | 1.507 (3) | C14—C15 | 1.526 (5) |
N2—C10A | 1.533 (10) | C15—H15A | 0.9600 |
N2—C11 | 1.497 (3) | C15—H15B | 0.9600 |
N2—C14 | 1.501 (3) | C15—H15C | 0.9600 |
N2—C11A | 1.490 (8) | C11A—H11C | 0.9700 |
N2—C14A | 1.510 (8) | C11A—H11D | 0.9700 |
C1—H1A | 0.9300 | C11A—C12A | 1.516 (9) |
C1—C8 | 1.364 (3) | C12A—H12C | 0.9700 |
C2—C3 | 1.404 (3) | C12A—H12D | 0.9700 |
C2—C7 | 1.419 (3) | C12A—C13A | 1.515 (9) |
C3—H3 | 0.9300 | C13A—H13D | 0.9600 |
C3—C4 | 1.357 (4) | C13A—H13E | 0.9600 |
C4—H4 | 0.9300 | C13A—H13F | 0.9600 |
C4—C5 | 1.384 (3) | C14A—H14C | 0.9700 |
C5—H5 | 0.9300 | C14A—H14D | 0.9700 |
C5—C6 | 1.368 (3) | C14A—C15A | 1.525 (11) |
C6—C7 | 1.396 (3) | C15A—H15D | 0.9600 |
C7—C8 | 1.426 (3) | C15A—H15E | 0.9600 |
C8—C9 | 1.519 (3) | C15A—H15F | 0.9600 |
C8—C9A | 1.524 (10) | C16—C17 | 1.494 (3) |
C9—H9A | 0.9700 | C17—H17A | 0.9600 |
C9—H9B | 0.9700 | C17—H17B | 0.9600 |
C9—C10 | 1.508 (3) | C17—H17C | 0.9600 |
C10—H10A | 0.9700 | C18—C19 | 1.494 (3) |
C10—H10B | 0.9700 | C19—C19i | 1.298 (4) |
C9A—H9AA | 0.9700 | C19—H19 | 0.9300 |
C9A—H9AB | 0.9700 | C20—C21 | 1.492 (2) |
C9A—C10A | 1.491 (10) | C21—C21ii | 1.305 (4) |
C10A—H10C | 0.9700 | C21—H21 | 0.9300 |
C16—O1—C6 | 119.21 (16) | C11—C12—H12B | 109.6 |
C18—O4—H4A | 113.2 (19) | C11—C12—C13 | 110.1 (4) |
C1—N1—H1 | 131.7 (19) | H12A—C12—H12B | 108.2 |
C2—N1—H1 | 117.7 (19) | C13—C12—H12A | 109.6 |
C2—N1—C1 | 109.69 (18) | C13—C12—H12B | 109.6 |
C10—N2—H2 | 105.7 (15) | C12—C13—H13A | 109.5 |
C10A—N2—H2 | 108.6 (18) | C12—C13—H13B | 109.5 |
C11—N2—H2 | 105.9 (15) | C12—C13—H13C | 109.5 |
C11—N2—C10 | 114.7 (3) | H13A—C13—H13B | 109.5 |
C11—N2—C14 | 114.0 (4) | H13A—C13—H13C | 109.5 |
C14—N2—H2 | 106.6 (15) | H13B—C13—H13C | 109.5 |
C14—N2—C10 | 109.2 (3) | N2—C14—H14A | 108.4 |
C11A—N2—H2 | 112.0 (16) | N2—C14—H14B | 108.4 |
C11A—N2—C10A | 127.9 (15) | N2—C14—C15 | 115.6 (3) |
C11A—N2—C14A | 114.3 (14) | H14A—C14—H14B | 107.4 |
C14A—N2—H2 | 97.4 (18) | C15—C14—H14A | 108.4 |
C14A—N2—C10A | 90.9 (7) | C15—C14—H14B | 108.4 |
N1—C1—H1A | 124.9 | C14—C15—H15A | 109.5 |
C8—C1—N1 | 110.2 (2) | C14—C15—H15B | 109.5 |
C8—C1—H1A | 124.9 | C14—C15—H15C | 109.5 |
N1—C2—C3 | 131.9 (2) | H15A—C15—H15B | 109.5 |
N1—C2—C7 | 106.0 (2) | H15A—C15—H15C | 109.5 |
C3—C2—C7 | 122.1 (2) | H15B—C15—H15C | 109.5 |
C2—C3—H3 | 121.0 | N2—C11A—H11C | 111.2 |
C4—C3—C2 | 117.9 (2) | N2—C11A—H11D | 111.2 |
C4—C3—H3 | 121.0 | N2—C11A—C12A | 103.0 (10) |
C3—C4—H4 | 119.2 | H11C—C11A—H11D | 109.1 |
C3—C4—C5 | 121.7 (2) | C12A—C11A—H11C | 111.2 |
C5—C4—H4 | 119.2 | C12A—C11A—H11D | 111.2 |
C4—C5—H5 | 119.8 | C11A—C12A—H12C | 111.9 |
C6—C5—C4 | 120.4 (2) | C11A—C12A—H12D | 111.9 |
C6—C5—H5 | 119.8 | H12C—C12A—H12D | 109.6 |
C5—C6—O1 | 119.70 (19) | C13A—C12A—C11A | 99.6 (9) |
C5—C6—C7 | 121.20 (19) | C13A—C12A—H12C | 111.9 |
C7—C6—O1 | 118.72 (18) | C13A—C12A—H12D | 111.9 |
C2—C7—C8 | 108.50 (19) | C12A—C13A—H13D | 109.5 |
C6—C7—C2 | 116.6 (2) | C12A—C13A—H13E | 109.5 |
C6—C7—C8 | 134.88 (18) | C12A—C13A—H13F | 109.5 |
C1—C8—C7 | 105.5 (2) | H13D—C13A—H13E | 109.5 |
C1—C8—C9 | 130.6 (2) | H13D—C13A—H13F | 109.5 |
C1—C8—C9A | 105.2 (12) | H13E—C13A—H13F | 109.5 |
C7—C8—C9 | 123.84 (18) | N2—C14A—H14C | 106.3 |
C7—C8—C9A | 138.6 (9) | N2—C14A—H14D | 106.3 |
C8—C9—H9A | 108.9 | N2—C14A—C15A | 124.1 (16) |
C8—C9—H9B | 108.9 | H14C—C14A—H14D | 106.4 |
H9A—C9—H9B | 107.7 | C15A—C14A—H14C | 106.3 |
C10—C9—C8 | 113.5 (2) | C15A—C14A—H14D | 106.3 |
C10—C9—H9A | 108.9 | C14A—C15A—H15D | 109.5 |
C10—C9—H9B | 108.9 | C14A—C15A—H15E | 109.5 |
N2—C10—C9 | 110.48 (19) | C14A—C15A—H15F | 109.5 |
N2—C10—H10A | 109.6 | H15D—C15A—H15E | 109.5 |
N2—C10—H10B | 109.6 | H15D—C15A—H15F | 109.5 |
C9—C10—H10A | 109.6 | H15E—C15A—H15F | 109.5 |
C9—C10—H10B | 109.6 | O1—C16—C17 | 110.6 (2) |
H10A—C10—H10B | 108.1 | O2—C16—O1 | 122.7 (2) |
C8—C9A—H9AA | 109.5 | O2—C16—C17 | 126.7 (2) |
C8—C9A—H9AB | 109.5 | C16—C17—H17A | 109.5 |
H9AA—C9A—H9AB | 108.0 | C16—C17—H17B | 109.5 |
C10A—C9A—C8 | 110.9 (12) | C16—C17—H17C | 109.5 |
C10A—C9A—H9AA | 109.5 | H17A—C17—H17B | 109.5 |
C10A—C9A—H9AB | 109.5 | H17A—C17—H17C | 109.5 |
N2—C10A—H10C | 109.5 | H17B—C17—H17C | 109.5 |
N2—C10A—H10D | 109.5 | O3—C18—O4 | 124.62 (19) |
C9A—C10A—N2 | 110.9 (12) | O3—C18—C19 | 123.65 (19) |
C9A—C10A—H10C | 109.5 | O4—C18—C19 | 111.71 (18) |
C9A—C10A—H10D | 109.5 | C18—C19—H19 | 118.8 |
H10C—C10A—H10D | 108.1 | C19i—C19—C18 | 122.3 (3) |
N2—C11—H11A | 109.2 | C19i—C19—H19 | 118.8 |
N2—C11—H11B | 109.2 | O5—C20—O6 | 123.40 (16) |
N2—C11—C12 | 112.2 (3) | O5—C20—C21 | 118.75 (17) |
H11A—C11—H11B | 107.9 | O6—C20—C21 | 117.85 (16) |
C12—C11—H11A | 109.2 | C20—C21—H21 | 118.1 |
C12—C11—H11B | 109.2 | C21ii—C21—C20 | 123.8 (2) |
C11—C12—H12A | 109.6 | C21ii—C21—H21 | 118.1 |
O1—C6—C7—C2 | −169.44 (17) | C4—C5—C6—C7 | −1.1 (3) |
O1—C6—C7—C8 | 8.5 (3) | C5—C6—C7—C2 | 3.5 (3) |
O3—C18—C19—C19i | 16.7 (4) | C5—C6—C7—C8 | −178.5 (2) |
O4—C18—C19—C19i | −162.0 (2) | C6—O1—C16—O2 | −2.6 (3) |
O5—C20—C21—C21ii | −1.5 (4) | C6—O1—C16—C17 | 176.42 (19) |
O6—C20—C21—C21ii | 177.7 (2) | C6—C7—C8—C1 | −177.5 (2) |
N1—C1—C8—C7 | −0.2 (3) | C6—C7—C8—C9 | 4.6 (4) |
N1—C1—C8—C9 | 177.5 (2) | C6—C7—C8—C9A | −40.9 (16) |
N1—C1—C8—C9A | −152.1 (9) | C7—C2—C3—C4 | 0.9 (3) |
N1—C2—C3—C4 | 179.3 (2) | C7—C8—C9—C10 | −176.3 (2) |
N1—C2—C7—C6 | 177.81 (18) | C7—C8—C9A—C10A | 128.1 (16) |
N1—C2—C7—C8 | −0.7 (2) | C8—C9—C10—N2 | 165.70 (19) |
N2—C11—C12—C13 | 169.6 (5) | C8—C9A—C10A—N2 | −167.0 (16) |
N2—C11A—C12A—C13A | 179.8 (14) | C10—N2—C11—C12 | −175.5 (4) |
C1—N1—C2—C3 | −178.1 (2) | C10—N2—C14—C15 | −75.4 (5) |
C1—N1—C2—C7 | 0.6 (3) | C10A—N2—C11A—C12A | −42 (2) |
C1—C8—C9—C10 | 6.4 (4) | C10A—N2—C14A—C15A | −173 (3) |
C1—C8—C9A—C10A | −95 (2) | C11—N2—C10—C9 | 64.1 (4) |
C2—N1—C1—C8 | −0.2 (3) | C11—N2—C14—C15 | 54.3 (6) |
C2—C3—C4—C5 | 1.7 (3) | C14—N2—C10—C9 | −166.6 (3) |
C2—C7—C8—C1 | 0.5 (2) | C14—N2—C11—C12 | 57.5 (6) |
C2—C7—C8—C9 | −177.3 (2) | C11A—N2—C10A—C9A | −114 (3) |
C2—C7—C8—C9A | 137.2 (16) | C11A—N2—C14A—C15A | 54 (3) |
C3—C2—C7—C6 | −3.4 (3) | C14A—N2—C10A—C9A | 124 (3) |
C3—C2—C7—C8 | 178.10 (19) | C14A—N2—C11A—C12A | 70 (2) |
C3—C4—C5—C6 | −1.7 (3) | C16—O1—C6—C5 | 94.6 (2) |
C4—C5—C6—O1 | 171.77 (19) | C16—O1—C6—C7 | −92.4 (2) |
Symmetry codes: (i) −x, −y, −z+2; (ii) −x, −y, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4A···O6 | 0.89 (1) | 1.65 (1) | 2.531 (2) | 168 (3) |
N2—H2···O5iii | 0.88 (1) | 1.89 (1) | 2.757 (2) | 166 (2) |
C9—H9A···O5iii | 0.97 | 2.51 | 3.316 (3) | 141 |
C10—H10A···O2iv | 0.97 | 2.63 | 3.537 (3) | 156 |
C9A—H9AB···O5iii | 0.97 | 2.44 | 3.24 (2) | 139 |
C9A—H9AB···N1v | 0.97 | 2.67 | 3.28 (2) | 121 |
C12A—H12D···O2iv | 0.97 | 2.53 | 3.441 (17) | 156 |
Symmetry codes: (iii) x, y−1, z+1; (iv) −x+1, −y−1, −z+2; (v) −x, −y−1, −z+2. |
Acknowledgements
Financial statements and conflict of interest: This study was funded by CaaMTech, Inc. ARC reports an ownership interest in CaaMTech, Inc., which owns US and worldwide patent applications, covering new tryptamine compounds, compositions, formulations, novel crystalline forms, and methods of making and using the same.
Funding information
Funding for this research was provided by: National Science Foundation, Directorate for Mathematical and Physical Sciences (grant No. CHE-1429086).
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