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

Journal logoIUCrDATA
ISSN: 2414-3146

Methyl (1-benzamido-2-meth­­oxy-2-oxoeth­yl)trypto­phanate

CROSSMARK_Color_square_no_text.svg

aFormation Doctorale Molécules Bioactives, Santé et Biotechnologies, Centre d'études Doctorales Sciences et Technologies LCO, Faculté des Sciences Dhar El Marhaz, Fès, Morocco, bLaboratoire de Chimie Organique, Faculté des Sciences Dhar el Mahraz, Université Sidi Mohammed Ben Abdellah, Fès, Morocco, and cLaboratoire de Chimie des Matériaux et Biotechnologie des Produits Naturels, E.Ma.Me.P.S., Université Moulay Ismail, Faculté des Sciences, Meknès, Morocco
*Correspondence e-mail: anouar.alami@usmba.ac.ma

Edited by J. Simpson, University of Otago, New Zealand (Received 13 October 2017; accepted 24 October 2017; online 31 October 2017)

The title mol­ecule, C22H23N3O2, is U-shaped, with a dihedral angle of 80.76 (9)° between the indole ring system and the phenyl ring. In the crystal, N—H⋯O hydrogen bonds combine with N—H⋯π and C—H⋯π inter­actions to generate a three-dimensional structure.

3D view (loading...)
[Scheme 3D1]
Chemical scheme
[Scheme 1]

Structure description

The mol­ecule of the title compound is approximately U-shaped, Fig. 1[link], with the indole ring system and the benzene ring linked by a complex alaninate chain and with a dihedral angle of 80.76 (9)° between them. This conformation is supported by an intra­molecular C5—H5⋯Cg3 inter­action (Table 1[link]).

Table 1
Hydrogen-bond geometry (Å, °)

Cg1, Cg2 and Cg3 are the centroids of the N3/C15–C17/C22, C1–C6 and C17–C22 rings, respectively.

D—H⋯A D—H H⋯A DA D—H⋯A
N3—H3N⋯O1i 0.87 (2) 2.03 (2) 2.862 (2) 162 (3)
N2—H2NCg2ii 0.89 (2) 2.65 (3) 3.4451 (18) 149 (2)
C5—H5⋯Cg3 0.93 2.83 3.662 (2) 149
C20—H20⋯Cg1iii 0.93 2.83 3.684 (3) 154
Symmetry codes: (i) [-x+1, y-{\script{1\over 2}}, -z+{\script{1\over 2}}]; (ii) [-x+1, y+{\script{1\over 2}}, -z+{\script{1\over 2}}]; (iii) [x+{\script{1\over 2}}, -y-{\script{1\over 2}}, -z].
[Figure 1]
Figure 1
The structure of the title compound, showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 50% probability level. H atoms are represented as small spheres of arbitrary radii.

In the crystal, classical N3—H3N⋯O1 hydrogen bonds together with unusual inter­molecular N2—H2NCg2 contacts and C20—H20⋯Cg1 interactions combine to generate a three dimensional network, Fig. 2[link].

[Figure 2]
Figure 2
A view of the crystal packing of the title compound along the b axis. N—H⋯O hydrogen bonds are drawn as blue dashed lines with N—H⋯π and C—H⋯π contacts shown as dotted green lines. Ring centroids are displayed as coloured spheres.

Synthesis and crystallization

To a solution of 2.6 mmol of N-protected methyl α-azido­glycinate and 3.12 mmol of di-iso­propyl­ethyl­amine (DIEA) in 10 ml of acetone, 2.86 mmol of 2-amino-3-(1H-indol-3-yl)propano­ate was added. The reaction mixture was stirred at room temperature. The solvent was evaporated under reduced pressure. The residue was quenched with saturated aqueous solution of ammonium chloride (20 ml) and extracted with methyl­ene chloride (3 × 20 ml). The organic layer was dried over sodium sulfate (Na2SO4) and the solvent was removed under reduced pressure. Single crystals of the title compound were obtained by recrystallization from chloro­form (CHCl3) solution, yield = 86% (white solid); m.p. = 174–176°C.

1H NMR (DMSO, δH p.p.m.): 2.94–3.02 (m, 3H, NH—CH—CH2– and –CH2-indol-3-yl); 3.28 (s, 3H, –OCH3); 3.64 (s, 3H, –OCH3); 3.67–3.72 (t, 1H, N—CH—CH2–, J = 6.90 Hz); 5.25–5.31 (dd, 1H, N—CH—N, J1 = 10.17 Hz and J2 = 7.73 Hz); 6.93–7.82 (m, 10H, 10Harom); 9.1 (s, 1H, NHBz); 10.9 (s, 1H, NHindole). 13C NMR (DMSO, δC p.p.m.): 29.18 (1 C, –CH2-indol-3-yl); 51.78 and 52.65 (2 C, –OCH3); 59.06 (1 C, –CH—CH2-indol-3-yl); 64.18 (1 C, N—CH—N); 109.80–136.48 (14 C, Carom); 166.61, 170.38 and 174.89 (3 C, CO). Calculated for C22H23N3O5 (%): C, 64.54; H, 5.66; N, 10.26; found (%): C 64.28, H 5.71, N 10.16. MS ESI m/z (%) = 409.60.

Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2[link]. With no heavy atoms in the mol­ecule the absolute structure could not be determined reliably.

Table 2
Experimental details

Crystal data
Chemical formula C22H23N3O5
Mr 409.43
Crystal system, space group Orthorhombic, P212121
Temperature (K) 293
a, b, c (Å) 9.5716 (3), 11.6875 (4), 18.1827 (6)
V3) 2034.06 (12)
Z 4
Radiation type Mo Kα
μ (mm−1) 0.10
Crystal size (mm) 0.23 × 0.21 × 0.14
 
Data collection
Diffractometer Bruker APEXII CCD
Absorption correction Multi-scan (SADABS; Bruker, 2005[Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.])
No. of measured, independent and observed [I > 2σ(I)] reflections 22029, 4675, 4359
Rint 0.027
(sin θ/λ)max−1) 0.650
 
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.034, 0.097, 1.05
No. of reflections 4675
No. of parameters 285
No. of restraints 3
H-atom treatment H atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3) 0.22, −0.17
Absolute structure Flack x determined using 1822 quotients [(I+)−(I)]/[(I+)+(I)] (Parsons et al., 2013[Parsons, S., Flack, H. D. & Wagner, T. (2013). Acta Cryst. B69, 249-259.]).
Absolute structure parameter 0.0 (2)
Computer programs: APEX2 and SAINT (Bruker, 2005[Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]), SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]), SHELXL2014 (Sheldrick, 2015[Sheldrick, G. M. (2015). Acta Cryst. C71, 3-8.]), PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]), Mercury (Macrae et al., 2008[Macrae, C. F., Bruno, I. J., Chisholm, J. A., Edgington, P. R., McCabe, P., Pidcock, E., Rodriguez-Monge, L., Taylor, R., van de Streek, J. & Wood, P. A. (2008). J. Appl. Cryst. 41, 466-470.]) and publCIF (Westrip, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).

Structural data


Computing details top

Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).

Methyl 3-(1H-indol-3-yl)-2-{[2-methoxy-2-oxo-1-(phenylformamido)ethyl]amino}propanoate top
Crystal data top
C22H23N3O5Dx = 1.337 Mg m3
Mr = 409.43Mo Kα radiation, λ = 0.71073 Å
Orthorhombic, P212121Cell parameters from 275 reflections
a = 9.5716 (3) Åθ = 1.3–57°
b = 11.6875 (4) ŵ = 0.10 mm1
c = 18.1827 (6) ÅT = 293 K
V = 2034.06 (12) Å3Prism, colourless
Z = 40.23 × 0.21 × 0.14 mm
F(000) = 864
Data collection top
Bruker APEXII CCD
diffractometer
4675 independent reflections
Radiation source: fine-focus sealed tube4359 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.027
φ and ω scanθmax = 27.5°, θmin = 2.1°
Absorption correction: multi-scan
(SADABS; Bruker, 2005)
h = 1212
k = 1515
22029 measured reflectionsl = 2323
Refinement top
Refinement on F2Hydrogen site location: mixed
Least-squares matrix: fullH atoms treated by a mixture of independent and constrained refinement
R[F2 > 2σ(F2)] = 0.034 w = 1/[σ2(Fo2) + (0.0569P)2 + 0.2737P]
where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.097(Δ/σ)max < 0.001
S = 1.05Δρmax = 0.22 e Å3
4675 reflectionsΔρmin = 0.17 e Å3
285 parametersAbsolute structure: Flack x determined using 1822 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons et al., 2013).
3 restraintsAbsolute structure parameter: 0.0 (2)
Special details top

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 (Å2) top
xyzUiso*/Ueq
C70.71253 (18)0.07261 (14)0.23815 (10)0.0313 (3)
C60.77399 (19)0.04380 (14)0.22646 (10)0.0309 (3)
C50.7366 (2)0.11460 (15)0.16841 (10)0.0361 (4)
H50.66440.09340.13700.043*
C10.8802 (2)0.07750 (17)0.27415 (11)0.0393 (4)
H10.90560.03060.31330.047*
C40.8070 (2)0.21720 (17)0.15728 (13)0.0464 (5)
H40.78300.26400.11790.056*
C20.9483 (2)0.18102 (19)0.26330 (14)0.0486 (5)
H21.01800.20410.29570.058*
C30.9124 (2)0.24964 (19)0.20450 (14)0.0510 (5)
H30.95960.31810.19670.061*
N10.58969 (17)0.09702 (13)0.20564 (9)0.0349 (3)
C80.52998 (19)0.21167 (15)0.21117 (10)0.0327 (4)
H80.51710.23060.26320.039*
C90.6299 (2)0.29926 (15)0.17664 (11)0.0365 (4)
O10.77431 (17)0.14492 (12)0.27462 (9)0.0497 (4)
O30.61318 (19)0.40054 (12)0.20853 (9)0.0517 (4)
O20.70594 (19)0.28145 (14)0.12588 (10)0.0582 (4)
C100.6864 (3)0.4950 (2)0.17486 (19)0.0675 (7)
H10A0.67600.56210.20490.101*
H10B0.64800.50940.12700.101*
H10C0.78370.47640.17040.101*
N20.39521 (17)0.21076 (14)0.17551 (9)0.0352 (3)
C120.3859 (2)0.33133 (17)0.06305 (11)0.0401 (4)
C110.3936 (2)0.21081 (15)0.09530 (10)0.0340 (4)
H110.47960.17440.07770.041*
C130.3913 (3)0.4341 (2)0.04853 (15)0.0638 (7)
H13A0.45540.49180.03200.096*
H13B0.29720.45950.04030.096*
H13C0.40520.42050.10010.096*
O50.41550 (19)0.32938 (14)0.00816 (9)0.0514 (4)
O40.3559 (3)0.41515 (15)0.09638 (11)0.0743 (6)
N30.2625 (2)0.15885 (14)0.13318 (10)0.0431 (4)
C170.3845 (2)0.05961 (16)0.04926 (10)0.0370 (4)
C160.2847 (2)0.01589 (16)0.08328 (11)0.0379 (4)
C140.2676 (2)0.14084 (17)0.06700 (12)0.0413 (4)
H14A0.18280.16860.09020.050*
H14B0.25830.15160.01430.050*
C150.2145 (2)0.04813 (17)0.13370 (11)0.0422 (4)
H150.14410.02080.16420.051*
C220.3673 (2)0.16815 (16)0.08245 (11)0.0381 (4)
C180.4861 (2)0.0466 (2)0.00585 (12)0.0480 (5)
H180.49930.02370.02880.058*
C210.4464 (3)0.26306 (19)0.06147 (12)0.0481 (5)
H210.43240.33440.08290.058*
C190.5659 (3)0.1399 (2)0.02529 (14)0.0584 (6)
H190.63450.13180.06110.070*
C200.5456 (3)0.2470 (2)0.00800 (14)0.0564 (6)
H200.60070.30850.00650.068*
H2N0.343 (3)0.2689 (19)0.1905 (14)0.047 (7)*
H1N0.537 (2)0.0475 (18)0.1878 (12)0.036 (6)*
H3N0.233 (3)0.212 (2)0.1624 (15)0.070 (9)*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C70.0333 (8)0.0256 (7)0.0350 (8)0.0013 (7)0.0002 (7)0.0008 (6)
C60.0307 (8)0.0247 (7)0.0373 (8)0.0019 (6)0.0032 (7)0.0033 (6)
C50.0382 (9)0.0278 (8)0.0422 (10)0.0006 (7)0.0000 (8)0.0005 (7)
C10.0341 (8)0.0367 (9)0.0472 (10)0.0005 (8)0.0037 (8)0.0032 (8)
C40.0507 (11)0.0310 (9)0.0574 (12)0.0001 (8)0.0075 (9)0.0088 (8)
C20.0337 (9)0.0427 (11)0.0694 (14)0.0071 (8)0.0038 (9)0.0087 (10)
C30.0427 (11)0.0310 (9)0.0793 (15)0.0081 (8)0.0102 (10)0.0008 (10)
N10.0366 (8)0.0219 (6)0.0463 (8)0.0003 (6)0.0065 (7)0.0013 (6)
C80.0366 (9)0.0256 (8)0.0358 (8)0.0032 (7)0.0010 (7)0.0002 (7)
C90.0394 (9)0.0290 (8)0.0411 (9)0.0009 (7)0.0015 (8)0.0024 (7)
O10.0485 (8)0.0338 (7)0.0669 (9)0.0035 (6)0.0163 (7)0.0159 (7)
O30.0640 (10)0.0268 (7)0.0643 (9)0.0053 (7)0.0080 (8)0.0036 (6)
O20.0665 (10)0.0450 (8)0.0630 (9)0.0052 (8)0.0244 (9)0.0024 (7)
C100.0796 (18)0.0320 (11)0.0910 (19)0.0118 (11)0.0063 (16)0.0059 (12)
N20.0335 (7)0.0330 (7)0.0391 (8)0.0057 (6)0.0023 (6)0.0022 (6)
C120.0409 (10)0.0335 (9)0.0460 (10)0.0008 (8)0.0002 (8)0.0089 (8)
C110.0343 (8)0.0279 (8)0.0396 (9)0.0044 (7)0.0009 (7)0.0047 (7)
C130.0725 (16)0.0576 (15)0.0614 (14)0.0001 (13)0.0020 (13)0.0283 (12)
O50.0655 (10)0.0446 (8)0.0442 (8)0.0014 (7)0.0002 (7)0.0135 (6)
O40.1215 (18)0.0361 (8)0.0655 (11)0.0202 (10)0.0198 (11)0.0083 (8)
N30.0521 (10)0.0345 (8)0.0429 (9)0.0053 (7)0.0003 (8)0.0085 (7)
C170.0414 (10)0.0336 (9)0.0360 (9)0.0049 (8)0.0063 (8)0.0004 (7)
C160.0416 (10)0.0335 (9)0.0386 (9)0.0027 (8)0.0074 (8)0.0023 (7)
C140.0405 (10)0.0345 (9)0.0488 (11)0.0003 (8)0.0099 (9)0.0080 (8)
C150.0457 (10)0.0388 (9)0.0421 (10)0.0012 (9)0.0009 (9)0.0026 (8)
C220.0417 (10)0.0340 (9)0.0386 (9)0.0050 (8)0.0091 (8)0.0005 (8)
C180.0519 (12)0.0469 (12)0.0451 (11)0.0085 (10)0.0022 (9)0.0012 (9)
C210.0572 (12)0.0339 (10)0.0534 (12)0.0001 (9)0.0111 (10)0.0056 (9)
C190.0559 (14)0.0651 (15)0.0543 (13)0.0040 (12)0.0085 (11)0.0120 (11)
C200.0565 (13)0.0512 (12)0.0614 (13)0.0065 (11)0.0012 (11)0.0177 (11)
Geometric parameters (Å, º) top
C7—O11.226 (2)C12—O51.326 (3)
C7—N11.347 (2)C12—C111.528 (2)
C7—C61.497 (2)C11—C141.546 (3)
C6—C51.388 (3)C11—H110.9800
C6—C11.393 (3)C13—O51.446 (3)
C5—C41.391 (3)C13—H13A0.9600
C5—H50.9300C13—H13B0.9600
C1—C21.388 (3)C13—H13C0.9600
C1—H10.9300N3—C221.367 (3)
C4—C31.378 (3)N3—C151.373 (3)
C4—H40.9300N3—H3N0.87 (2)
C2—C31.380 (3)C17—C181.405 (3)
C2—H20.9300C17—C221.414 (3)
C3—H30.9300C17—C161.440 (3)
N1—C81.460 (2)C16—C151.361 (3)
N1—H1N0.831 (19)C16—C141.499 (3)
C8—N21.444 (2)C14—H14A0.9700
C8—C91.535 (3)C14—H14B0.9700
C8—H80.9800C15—H150.9300
C9—O21.194 (3)C22—C211.396 (3)
C9—O31.328 (2)C18—C191.377 (4)
O3—C101.444 (3)C18—H180.9300
C10—H10A0.9600C21—C201.372 (4)
C10—H10B0.9600C21—H210.9300
C10—H10C0.9600C19—C201.404 (4)
N2—C111.459 (2)C19—H190.9300
N2—H2N0.89 (2)C20—H200.9300
C12—O41.187 (3)
O1—C7—N1120.83 (16)N2—C11—C12112.63 (16)
O1—C7—C6120.90 (16)N2—C11—C14109.92 (16)
N1—C7—C6118.24 (15)C12—C11—C14108.79 (15)
C5—C6—C1119.54 (17)N2—C11—H11108.5
C5—C6—C7123.24 (16)C12—C11—H11108.5
C1—C6—C7117.08 (16)C14—C11—H11108.5
C6—C5—C4119.97 (18)O5—C13—H13A109.5
C6—C5—H5120.0O5—C13—H13B109.5
C4—C5—H5120.0H13A—C13—H13B109.5
C2—C1—C6120.0 (2)O5—C13—H13C109.5
C2—C1—H1120.0H13A—C13—H13C109.5
C6—C1—H1120.0H13B—C13—H13C109.5
C3—C4—C5120.1 (2)C12—O5—C13116.56 (19)
C3—C4—H4119.9C22—N3—C15108.96 (16)
C5—C4—H4119.9C22—N3—H3N127 (2)
C3—C2—C1120.0 (2)C15—N3—H3N124 (2)
C3—C2—H2120.0C18—C17—C22118.80 (19)
C1—C2—H2120.0C18—C17—C16134.39 (19)
C4—C3—C2120.33 (19)C22—C17—C16106.81 (18)
C4—C3—H3119.8C15—C16—C17106.25 (17)
C2—C3—H3119.8C15—C16—C14127.9 (2)
C7—N1—C8120.39 (15)C17—C16—C14125.78 (19)
C7—N1—H1N123.4 (16)C16—C14—C11111.37 (16)
C8—N1—H1N115.5 (16)C16—C14—H14A109.4
N2—C8—N1108.18 (15)C11—C14—H14A109.4
N2—C8—C9112.20 (15)C16—C14—H14B109.4
N1—C8—C9109.88 (15)C11—C14—H14B109.4
N2—C8—H8108.8H14A—C14—H14B108.0
N1—C8—H8108.8C16—C15—N3110.40 (19)
C9—C8—H8108.8C16—C15—H15124.8
O2—C9—O3124.51 (19)N3—C15—H15124.8
O2—C9—C8125.43 (18)N3—C22—C21130.20 (19)
O3—C9—C8109.93 (16)N3—C22—C17107.58 (17)
C9—O3—C10115.99 (19)C21—C22—C17122.2 (2)
O3—C10—H10A109.5C19—C18—C17118.8 (2)
O3—C10—H10B109.5C19—C18—H18120.6
H10A—C10—H10B109.5C17—C18—H18120.6
O3—C10—H10C109.5C20—C21—C22117.4 (2)
H10A—C10—H10C109.5C20—C21—H21121.3
H10B—C10—H10C109.5C22—C21—H21121.3
C8—N2—C11117.27 (15)C18—C19—C20121.2 (2)
C8—N2—H2N111.2 (17)C18—C19—H19119.4
C11—N2—H2N107.5 (16)C20—C19—H19119.4
O4—C12—O5124.37 (19)C21—C20—C19121.6 (2)
O4—C12—C11125.23 (19)C21—C20—H20119.2
O5—C12—C11110.40 (17)C19—C20—H20119.2
Hydrogen-bond geometry (Å, º) top
Cg1, Cg2 and Cg3 are the centroids of the N3/C15–C17/C22, C1–C6 and C17–C22 rings, respectively.
D—H···AD—HH···AD···AD—H···A
N3—H3N···O1i0.87 (2)2.03 (2)2.862 (2)162 (3)
N2—H2N···Cg2ii0.89 (2)2.65 (3)3.4451 (18)149 (2)
C5—H5···Cg30.932.833.662 (2)149
C20—H20···Cg1iii0.932.833.684 (3)154
Symmetry codes: (i) x+1, y1/2, z+1/2; (ii) x+1, y+1/2, z+1/2; (iii) x+1/2, y1/2, z.
 

References

First citationBruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.  Google Scholar
First citationMacrae, C. F., Bruno, I. J., Chisholm, J. A., Edgington, P. R., McCabe, P., Pidcock, E., Rodriguez-Monge, L., Taylor, R., van de Streek, J. & Wood, P. A. (2008). J. Appl. Cryst. 41, 466–470.  Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
First citationParsons, S., Flack, H. D. & Wagner, T. (2013). Acta Cryst. B69, 249–259.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationSheldrick, G. M. (2015). Acta Cryst. C71, 3–8.  Web of Science CrossRef IUCr Journals Google Scholar
First citationSpek, A. L. (2009). Acta Cryst. D65, 148–155.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationWestrip, S. P. (2010). J. Appl. Cryst. 43, 920–925.  Web of Science CrossRef CAS IUCr Journals Google Scholar

This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

Journal logoIUCrDATA
ISSN: 2414-3146
Follow IUCr Journals
Sign up for e-alerts
Follow IUCr on Twitter
Follow us on facebook
Sign up for RSS feeds

[# https x2 cm 20170801 %]