organic compounds
Diethyl 1-benzyl-2,2-dioxo-4-phenyl-3,4,6,7,8,8a-hexahydro-1H-pyrrolo[2,1-c][1,4]thiazine-1,3-dicarboxylate
aDepartment of Physics, Sri Subramanya College of Engineering & Technology, Palani 624 615, India, bDepartment of Physics, University College of Engineering Nagercoil, Anna University of Technology Tirunelveli, Nagercoil 629 004, India, cDepartment of Physics, Kalasalingam University, Krishnan koil 626 190, India, and dDepartment of Organic Chemistry, Madurai Kamaraj University, Madurai 625 021, India
*Correspondence e-mail: athi81s@yahoo.co.in
In the title compound, C26H31NO6S, the five-membered pyrrolidine ring adopts an and the six-membered thiazine ring is in a distorted chair conformation. The crystal packing is stabilized through an intermolecular C—H⋯O interaction, generating inversion-related R22(10) ring motifs.
Related literature
For the biological and pharmacological importance of thiazine compounds, see: Moriyama et al. (2004); Koketsu et al. (2002). For the biological and pharmacological properties of compounds containing the pyrrolidine sub-structure, see: Hemming & Patel (2004); Kueh et al. (2003). For biological properties of compounds containing the pyrrolothiazine scaffold, see: Armenise et al. (1991, 1998). For ring puckering analysis, see: Cremer & Pople (1975). For hydrogen-bonding interactions, see: Desiraju & Steiner (1999). For graph-set analysis, see: Etter et al. (1990).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: SMART (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL/PC (Sheldrick, 2008).
Supporting information
10.1107/S1600536811031047/su2277sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811031047/su2277Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811031047/su2277Isup3.cml
A mixture of ethyl 2-[(2-ethoxy-2-oxoethyl)sulfonyl]acetate (1.6 mmol), benzaldehyde (3.2 mmol) and pyrrolidine (1.6 mmol) was dissolved in ethanol (10 ml), heated until the solution turned yellow and stirred at room temperature for 2–5 days. After completion of the reaction, the crude product was purified using flash
on silica gel (230–400 mesh) with petroleum ether and ethyl acetate mixture (95:5 v/v) as an Crystals, suitable for X-ray were obtained by recrystallization from ethanol.All the H atoms were positioned geometrically and treated as rding atoms: C—H = 0.93, 0.98, 0.97 and 0.96 Å for CH(methine), CH(aromatic), CH2 and CH3 H-atoms, respectively, with Uiso(H)= k × Ueq(C), where k = 1.5 for CH3 H-atoms and k = 1.2 for all other H-atoms. One of the side chains, -CH2-CH3, is disordered over two positions. The site occupancies of theses atoms (C3B1,C3B2) and (C3C1,C3C2) were fixed at 0.6 and 0.4, respectively.
Data collection: SMART (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL/PC (Sheldrick, 2008).C26H31NO6S | F(000) = 1032 |
Mr = 485.58 | Dx = 1.300 Mg m−3 |
Monoclinic, P21/c | Melting point: 419 K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 13.5232 (9) Å | Cell parameters from 3512 reflections |
b = 16.8402 (12) Å | θ = 2.4–23.8° |
c = 12.1789 (9) Å | µ = 0.17 mm−1 |
β = 116.568 (1)° | T = 293 K |
V = 2480.7 (3) Å3 | Block, colourless |
Z = 4 | 0.22 × 0.18 × 0.15 mm |
Bruker SMART APEX CCD area-detector diffractometer | 3885 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.023 |
Graphite monochromator | θmax = 25.0°, θmin = 1.7° |
ω scans | h = −15→16 |
23528 measured reflections | k = −19→19 |
4360 independent reflections | l = −14→14 |
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)] = 0.040 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.112 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0573P)2 + 0.6606P] where P = (Fo2 + 2Fc2)/3 |
4360 reflections | (Δ/σ)max = 0.001 |
328 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.21 e Å−3 |
C26H31NO6S | V = 2480.7 (3) Å3 |
Mr = 485.58 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 13.5232 (9) Å | µ = 0.17 mm−1 |
b = 16.8402 (12) Å | T = 293 K |
c = 12.1789 (9) Å | 0.22 × 0.18 × 0.15 mm |
β = 116.568 (1)° |
Bruker SMART APEX CCD area-detector diffractometer | 3885 reflections with I > 2σ(I) |
23528 measured reflections | Rint = 0.023 |
4360 independent reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.112 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.34 e Å−3 |
4360 reflections | Δρmin = −0.21 e Å−3 |
328 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell esds are taken into account in the estimation of distances, angles and torsion angles |
Refinement. Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > σ(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
S1 | 0.15741 (3) | 0.92139 (2) | 0.43420 (4) | 0.0492 (1) | |
O3A | 0.35985 (10) | 0.97564 (9) | 0.43234 (14) | 0.0719 (5) | |
O3B | 0.29527 (10) | 1.07744 (8) | 0.30412 (13) | 0.0659 (5) | |
O4A | 0.15678 (12) | 0.88688 (9) | 0.70359 (14) | 0.0746 (5) | |
O4B | 0.31214 (10) | 0.83490 (7) | 0.71181 (12) | 0.0603 (4) | |
O11 | 0.04484 (10) | 0.91684 (8) | 0.41508 (13) | 0.0635 (5) | |
O12 | 0.20400 (11) | 0.85244 (7) | 0.40719 (12) | 0.0621 (4) | |
N1 | 0.22020 (11) | 1.09127 (8) | 0.53463 (13) | 0.0514 (4) | |
C3B1 | 0.4011 (11) | 1.0955 (8) | 0.3087 (12) | 0.091 (4) | 0.600 |
C2 | 0.13365 (14) | 1.07966 (10) | 0.40838 (16) | 0.0518 (5) | |
C3C1 | 0.4416 (7) | 1.1711 (6) | 0.3650 (10) | 0.177 (5) | 0.600 |
C3 | 0.16594 (12) | 1.00898 (9) | 0.34934 (15) | 0.0475 (5) | |
C3A | 0.28510 (13) | 1.01706 (10) | 0.36781 (16) | 0.0505 (5) | |
C4 | 0.24346 (13) | 0.94980 (9) | 0.59187 (15) | 0.0476 (5) | |
C4A | 0.23023 (14) | 0.88740 (10) | 0.67482 (16) | 0.0524 (5) | |
C4B | 0.30779 (17) | 0.77085 (12) | 0.79068 (19) | 0.0686 (7) | |
C4C | 0.3898 (2) | 0.71084 (15) | 0.7988 (3) | 0.0970 (10) | |
C5 | 0.21555 (13) | 1.03327 (10) | 0.62232 (16) | 0.0505 (5) | |
C6 | 0.20688 (18) | 1.17373 (11) | 0.5649 (2) | 0.0677 (7) | |
C7 | 0.19111 (19) | 1.21696 (11) | 0.4504 (2) | 0.0739 (7) | |
C8 | 0.11953 (17) | 1.16161 (11) | 0.34662 (19) | 0.0662 (7) | |
C31 | 0.07930 (13) | 1.00024 (11) | 0.21296 (16) | 0.0562 (6) | |
C32 | 0.09916 (13) | 0.93866 (10) | 0.13463 (16) | 0.0524 (5) | |
C33 | 0.16040 (15) | 0.95665 (12) | 0.07280 (17) | 0.0624 (6) | |
C34 | 0.17452 (18) | 0.90259 (14) | −0.00374 (19) | 0.0717 (8) | |
C35 | 0.12652 (19) | 0.82867 (13) | −0.02086 (19) | 0.0738 (7) | |
C36 | 0.0654 (2) | 0.80987 (13) | 0.0397 (2) | 0.0793 (8) | |
C37 | 0.05118 (16) | 0.86437 (12) | 0.11638 (19) | 0.0683 (7) | |
C51 | 0.29799 (15) | 1.05548 (10) | 0.75148 (17) | 0.0546 (6) | |
C52 | 0.2635 (2) | 1.06714 (12) | 0.8413 (2) | 0.0710 (8) | |
C53 | 0.3373 (2) | 1.08980 (14) | 0.9581 (2) | 0.0883 (10) | |
C54 | 0.4456 (2) | 1.10084 (14) | 0.9869 (2) | 0.0895 (9) | |
C55 | 0.48211 (19) | 1.09012 (14) | 0.8991 (2) | 0.0857 (9) | |
C56 | 0.40837 (16) | 1.06721 (12) | 0.7808 (2) | 0.0683 (7) | |
C3B2 | 0.4149 (13) | 1.0937 (6) | 0.3395 (18) | 0.062 (4) | 0.400 |
C3C2 | 0.4129 (7) | 1.1751 (5) | 0.2913 (6) | 0.069 (3) | 0.400 |
H3B2 | 0.39440 | 1.09570 | 0.22600 | 0.1100* | 0.600 |
H3C4 | 0.39340 | 1.21230 | 0.31500 | 0.2650* | 0.600 |
H4 | 0.32070 | 0.94970 | 0.60600 | 0.0570* | |
H3C5 | 0.51470 | 1.17950 | 0.37260 | 0.2650* | 0.600 |
H5 | 0.14100 | 1.03280 | 0.61670 | 0.0610* | |
H3C6 | 0.44390 | 1.17220 | 0.44490 | 0.2650* | 0.600 |
H6A | 0.27210 | 1.19240 | 0.63570 | 0.0810* | |
H6B | 0.14290 | 1.17950 | 0.58040 | 0.0810* | |
H7A | 0.26160 | 1.22640 | 0.44960 | 0.0890* | |
H7B | 0.15430 | 1.26740 | 0.44380 | 0.0890* | |
H8A | 0.14450 | 1.16030 | 0.28330 | 0.0790* | |
H8B | 0.04280 | 1.17830 | 0.31020 | 0.0790* | |
H4B1 | 0.23440 | 0.74760 | 0.75600 | 0.0820* | |
H4B2 | 0.32490 | 0.79120 | 0.87170 | 0.0820* | |
H4C1 | 0.37360 | 0.69250 | 0.71780 | 0.1450* | |
H4C2 | 0.38700 | 0.66690 | 0.84750 | 0.1450* | |
H4C3 | 0.46240 | 0.73390 | 0.83620 | 0.1450* | |
H31A | 0.00850 | 0.98860 | 0.21160 | 0.0670* | |
H31B | 0.07240 | 1.05140 | 0.17370 | 0.0670* | |
H33 | 0.19290 | 1.00650 | 0.08310 | 0.0750* | |
H34 | 0.21660 | 0.91600 | −0.04400 | 0.0860* | |
H35 | 0.13550 | 0.79200 | −0.07280 | 0.0890* | |
H36 | 0.03310 | 0.75990 | 0.02910 | 0.0950* | |
H37 | 0.00880 | 0.85080 | 0.15620 | 0.0820* | |
H52 | 0.18960 | 1.05960 | 0.82260 | 0.0850* | |
H53 | 0.31280 | 1.09760 | 1.01750 | 0.1060* | |
H54 | 0.49520 | 1.11570 | 1.06620 | 0.1070* | |
H55 | 0.55620 | 1.09820 | 0.91880 | 0.1030* | |
H56 | 0.43310 | 1.05980 | 0.72150 | 0.0820* | |
H3B1 | 0.45370 | 1.05450 | 0.35490 | 0.1100* | 0.600 |
H2 | 0.06460 | 1.06630 | 0.41180 | 0.0620* | |
H3B3 | 0.45890 | 1.09190 | 0.42780 | 0.0740* | 0.400 |
H3B4 | 0.44420 | 1.05570 | 0.30180 | 0.0740* | 0.400 |
H3C1 | 0.36030 | 1.17710 | 0.20620 | 0.1030* | 0.400 |
H3C2 | 0.48500 | 1.18830 | 0.29970 | 0.1030* | 0.400 |
H3C3 | 0.39210 | 1.21240 | 0.33690 | 0.1030* | 0.400 |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0454 (2) | 0.0417 (2) | 0.0580 (3) | −0.0019 (2) | 0.0209 (2) | −0.0040 (2) |
O3A | 0.0435 (7) | 0.0786 (9) | 0.0905 (10) | 0.0157 (6) | 0.0273 (7) | 0.0259 (8) |
O3B | 0.0477 (7) | 0.0663 (8) | 0.0768 (9) | −0.0028 (6) | 0.0218 (6) | 0.0149 (7) |
O4A | 0.0731 (9) | 0.0739 (9) | 0.0948 (10) | 0.0031 (7) | 0.0537 (8) | 0.0090 (8) |
O4B | 0.0588 (7) | 0.0533 (7) | 0.0682 (8) | 0.0028 (6) | 0.0279 (6) | 0.0108 (6) |
O11 | 0.0481 (7) | 0.0620 (8) | 0.0773 (9) | −0.0112 (6) | 0.0252 (6) | −0.0060 (6) |
O12 | 0.0750 (8) | 0.0440 (6) | 0.0674 (8) | 0.0058 (6) | 0.0320 (7) | −0.0032 (6) |
N1 | 0.0450 (7) | 0.0401 (7) | 0.0608 (8) | 0.0022 (6) | 0.0163 (6) | −0.0026 (6) |
C3B1 | 0.059 (5) | 0.136 (8) | 0.073 (5) | −0.009 (4) | 0.024 (4) | 0.012 (4) |
C2 | 0.0408 (8) | 0.0450 (9) | 0.0628 (10) | 0.0054 (7) | 0.0172 (8) | 0.0000 (7) |
C3C1 | 0.087 (5) | 0.147 (7) | 0.299 (13) | −0.048 (5) | 0.089 (8) | −0.088 (9) |
C3 | 0.0389 (8) | 0.0423 (8) | 0.0561 (10) | 0.0023 (6) | 0.0165 (7) | 0.0012 (7) |
C3A | 0.0429 (9) | 0.0500 (9) | 0.0533 (9) | 0.0002 (7) | 0.0169 (7) | 0.0006 (7) |
C4 | 0.0411 (8) | 0.0438 (9) | 0.0560 (9) | −0.0004 (7) | 0.0200 (7) | −0.0023 (7) |
C4A | 0.0516 (9) | 0.0478 (9) | 0.0575 (10) | −0.0047 (7) | 0.0241 (8) | −0.0052 (8) |
C4B | 0.0715 (12) | 0.0615 (12) | 0.0663 (12) | −0.0063 (10) | 0.0249 (10) | 0.0130 (9) |
C4C | 0.1060 (19) | 0.0645 (14) | 0.119 (2) | 0.0164 (13) | 0.0489 (16) | 0.0299 (14) |
C5 | 0.0422 (8) | 0.0453 (9) | 0.0622 (10) | 0.0011 (7) | 0.0218 (8) | −0.0054 (7) |
C6 | 0.0679 (12) | 0.0431 (10) | 0.0787 (13) | 0.0041 (8) | 0.0207 (10) | −0.0070 (9) |
C7 | 0.0739 (13) | 0.0438 (10) | 0.0942 (15) | 0.0042 (9) | 0.0289 (11) | 0.0022 (10) |
C8 | 0.0622 (11) | 0.0486 (10) | 0.0777 (13) | 0.0125 (8) | 0.0224 (10) | 0.0064 (9) |
C31 | 0.0405 (9) | 0.0590 (10) | 0.0583 (10) | 0.0040 (7) | 0.0124 (8) | 0.0015 (8) |
C32 | 0.0403 (8) | 0.0545 (10) | 0.0495 (9) | 0.0000 (7) | 0.0085 (7) | 0.0015 (7) |
C33 | 0.0599 (11) | 0.0599 (11) | 0.0597 (11) | −0.0040 (9) | 0.0199 (9) | 0.0026 (9) |
C34 | 0.0684 (13) | 0.0833 (15) | 0.0618 (12) | 0.0042 (11) | 0.0278 (10) | 0.0008 (11) |
C35 | 0.0768 (14) | 0.0715 (13) | 0.0579 (11) | 0.0145 (11) | 0.0165 (10) | −0.0062 (10) |
C36 | 0.0844 (15) | 0.0594 (12) | 0.0753 (14) | −0.0124 (11) | 0.0190 (12) | −0.0104 (10) |
C37 | 0.0623 (11) | 0.0684 (12) | 0.0673 (12) | −0.0166 (10) | 0.0228 (10) | −0.0087 (10) |
C51 | 0.0536 (10) | 0.0427 (9) | 0.0619 (11) | 0.0002 (7) | 0.0208 (8) | −0.0037 (8) |
C52 | 0.0789 (14) | 0.0624 (12) | 0.0734 (13) | −0.0089 (10) | 0.0355 (11) | −0.0122 (10) |
C53 | 0.118 (2) | 0.0741 (15) | 0.0689 (14) | −0.0171 (14) | 0.0382 (14) | −0.0137 (11) |
C54 | 0.109 (2) | 0.0680 (14) | 0.0611 (13) | −0.0189 (13) | 0.0109 (13) | −0.0026 (11) |
C55 | 0.0618 (13) | 0.0702 (14) | 0.0918 (17) | −0.0102 (10) | 0.0045 (12) | 0.0033 (12) |
C56 | 0.0539 (11) | 0.0655 (12) | 0.0722 (13) | −0.0026 (9) | 0.0164 (9) | −0.0039 (10) |
C3B2 | 0.036 (4) | 0.050 (4) | 0.089 (9) | −0.003 (3) | 0.018 (5) | 0.030 (4) |
C3C2 | 0.074 (5) | 0.054 (4) | 0.083 (4) | −0.019 (3) | 0.040 (4) | 0.014 (3) |
S1—O11 | 1.4354 (16) | C55—C56 | 1.391 (3) |
S1—O12 | 1.4279 (14) | C3B1—H3B1 | 0.9700 |
S1—C3 | 1.8341 (16) | C3B1—H3B2 | 0.9700 |
S1—C4 | 1.8087 (17) | C2—H2 | 0.9800 |
O3A—C3A | 1.190 (2) | C3C1—H3C4 | 0.9600 |
O3B—C3B1 | 1.440 (16) | C3C1—H3C5 | 0.9600 |
O3B—C3A | 1.323 (2) | C3C1—H3C6 | 0.9600 |
O3B—C3B2 | 1.50 (2) | C3B2—H3B3 | 0.9700 |
O4A—C4A | 1.192 (3) | C3B2—H3B4 | 0.9700 |
O4B—C4A | 1.329 (2) | C4—H4 | 0.9800 |
O4B—C4B | 1.463 (2) | C3C2—H3C1 | 0.9600 |
N1—C2 | 1.471 (2) | C3C2—H3C3 | 0.9600 |
N1—C5 | 1.469 (2) | C3C2—H3C2 | 0.9600 |
N1—C6 | 1.468 (2) | C4B—H4B2 | 0.9700 |
C3B1—C3C1 | 1.434 (17) | C4B—H4B1 | 0.9700 |
C2—C3 | 1.551 (2) | C4C—H4C2 | 0.9600 |
C2—C8 | 1.542 (3) | C4C—H4C3 | 0.9600 |
C3—C3A | 1.530 (3) | C4C—H4C1 | 0.9600 |
C3—C31 | 1.553 (2) | C5—H5 | 0.9800 |
C3B2—C3C2 | 1.487 (15) | C6—H6B | 0.9700 |
C4—C4A | 1.523 (2) | C6—H6A | 0.9700 |
C4—C5 | 1.543 (2) | C7—H7A | 0.9700 |
C4B—C4C | 1.471 (4) | C7—H7B | 0.9700 |
C5—C51 | 1.513 (3) | C8—H8A | 0.9700 |
C6—C7 | 1.501 (3) | C8—H8B | 0.9700 |
C7—C8 | 1.520 (3) | C31—H31B | 0.9700 |
C31—C32 | 1.512 (3) | C31—H31A | 0.9700 |
C32—C33 | 1.379 (3) | C33—H33 | 0.9300 |
C32—C37 | 1.381 (3) | C34—H34 | 0.9300 |
C33—C34 | 1.376 (3) | C35—H35 | 0.9300 |
C34—C35 | 1.376 (3) | C36—H36 | 0.9300 |
C35—C36 | 1.369 (4) | C37—H37 | 0.9300 |
C36—C37 | 1.383 (3) | C52—H52 | 0.9300 |
C51—C56 | 1.385 (3) | C53—H53 | 0.9300 |
C51—C52 | 1.382 (3) | C54—H54 | 0.9300 |
C52—C53 | 1.377 (3) | C55—H55 | 0.9300 |
C53—C54 | 1.358 (4) | C56—H56 | 0.9300 |
C54—C55 | 1.376 (4) | ||
O11—S1—O12 | 117.67 (9) | H3C5—C3C1—H3C6 | 110.00 |
O11—S1—C3 | 106.32 (8) | H3B3—C3B2—H3B4 | 109.00 |
O11—S1—C4 | 108.57 (9) | O3B—C3B2—H3B3 | 111.00 |
O12—S1—C3 | 112.26 (8) | O3B—C3B2—H3B4 | 111.00 |
O12—S1—C4 | 108.60 (8) | C3C2—C3B2—H3B3 | 111.00 |
C3—S1—C4 | 102.28 (7) | C3C2—C3B2—H3B4 | 111.00 |
C3B1—O3B—C3A | 120.1 (5) | C5—C4—H4 | 108.00 |
C3B2—O3B—C3A | 110.7 (6) | C4A—C4—H4 | 108.00 |
C4A—O4B—C4B | 116.17 (16) | S1—C4—H4 | 108.00 |
C2—N1—C5 | 113.51 (14) | H3C1—C3C2—H3C3 | 110.00 |
C2—N1—C6 | 104.99 (14) | C3B2—C3C2—H3C1 | 109.00 |
C5—N1—C6 | 113.35 (15) | C3B2—C3C2—H3C2 | 109.00 |
O3B—C3B1—C3C1 | 111.5 (11) | H3C2—C3C2—H3C3 | 109.00 |
N1—C2—C3 | 109.23 (15) | H3C1—C3C2—H3C2 | 109.00 |
N1—C2—C8 | 104.95 (14) | C3B2—C3C2—H3C3 | 109.00 |
C3—C2—C8 | 117.37 (16) | C4C—C4B—H4B2 | 110.00 |
S1—C3—C2 | 104.73 (11) | H4B1—C4B—H4B2 | 109.00 |
S1—C3—C3A | 108.43 (11) | C4C—C4B—H4B1 | 110.00 |
S1—C3—C31 | 108.60 (11) | O4B—C4B—H4B1 | 110.00 |
C2—C3—C3A | 111.10 (14) | O4B—C4B—H4B2 | 110.00 |
C2—C3—C31 | 109.53 (14) | C4B—C4C—H4C2 | 110.00 |
C3A—C3—C31 | 114.00 (14) | C4B—C4C—H4C3 | 110.00 |
O3B—C3B2—C3C2 | 103.2 (11) | C4B—C4C—H4C1 | 109.00 |
O3A—C3A—O3B | 123.89 (19) | H4C2—C4C—H4C3 | 109.00 |
O3A—C3A—C3 | 124.94 (16) | H4C1—C4C—H4C2 | 109.00 |
O3B—C3A—C3 | 111.16 (15) | H4C1—C4C—H4C3 | 109.00 |
S1—C4—C5 | 112.69 (12) | N1—C5—H5 | 109.00 |
C4A—C4—C5 | 110.81 (15) | C4—C5—H5 | 109.00 |
S1—C4—C4A | 108.13 (11) | C51—C5—H5 | 109.00 |
O4A—C4A—O4B | 124.99 (17) | N1—C6—H6A | 111.00 |
O4A—C4A—C4 | 124.11 (17) | H6A—C6—H6B | 109.00 |
O4B—C4A—C4 | 110.90 (17) | N1—C6—H6B | 111.00 |
O4B—C4B—C4C | 107.5 (2) | C7—C6—H6A | 111.00 |
N1—C5—C4 | 109.65 (14) | C7—C6—H6B | 111.00 |
C4—C5—C51 | 109.23 (14) | C6—C7—H7B | 111.00 |
N1—C5—C51 | 109.89 (14) | C8—C7—H7A | 111.00 |
N1—C6—C7 | 101.99 (16) | C8—C7—H7B | 111.00 |
C6—C7—C8 | 104.37 (17) | C6—C7—H7A | 111.00 |
C2—C8—C7 | 104.44 (16) | H7A—C7—H7B | 109.00 |
C3—C31—C32 | 118.54 (15) | C2—C8—H8B | 111.00 |
C31—C32—C33 | 120.88 (16) | C7—C8—H8A | 111.00 |
C33—C32—C37 | 117.70 (18) | H8A—C8—H8B | 109.00 |
C31—C32—C37 | 121.31 (18) | C7—C8—H8B | 111.00 |
C32—C33—C34 | 121.6 (2) | C2—C8—H8A | 111.00 |
C33—C34—C35 | 120.2 (2) | C3—C31—H31A | 108.00 |
C34—C35—C36 | 119.0 (2) | H31A—C31—H31B | 107.00 |
C35—C36—C37 | 120.7 (2) | C32—C31—H31B | 108.00 |
C32—C37—C36 | 120.9 (2) | C3—C31—H31B | 108.00 |
C5—C51—C52 | 120.4 (2) | C32—C31—H31A | 108.00 |
C52—C51—C56 | 118.83 (19) | C34—C33—H33 | 119.00 |
C5—C51—C56 | 120.76 (18) | C32—C33—H33 | 119.00 |
C51—C52—C53 | 120.8 (3) | C35—C34—H34 | 120.00 |
C52—C53—C54 | 120.3 (2) | C33—C34—H34 | 120.00 |
C53—C54—C55 | 120.1 (2) | C34—C35—H35 | 120.00 |
C54—C55—C56 | 120.1 (2) | C36—C35—H35 | 120.00 |
C51—C56—C55 | 119.8 (2) | C37—C36—H36 | 120.00 |
O3B—C3B1—H3B1 | 109.00 | C35—C36—H36 | 120.00 |
O3B—C3B1—H3B2 | 109.00 | C32—C37—H37 | 120.00 |
C3C1—C3B1—H3B1 | 109.00 | C36—C37—H37 | 120.00 |
C3C1—C3B1—H3B2 | 109.00 | C51—C52—H52 | 120.00 |
H3B1—C3B1—H3B2 | 108.00 | C53—C52—H52 | 120.00 |
N1—C2—H2 | 108.00 | C52—C53—H53 | 120.00 |
C3—C2—H2 | 108.00 | C54—C53—H53 | 120.00 |
C8—C2—H2 | 108.00 | C55—C54—H54 | 120.00 |
C3B1—C3C1—H3C4 | 109.00 | C53—C54—H54 | 120.00 |
C3B1—C3C1—H3C5 | 109.00 | C56—C55—H55 | 120.00 |
C3B1—C3C1—H3C6 | 110.00 | C54—C55—H55 | 120.00 |
H3C4—C3C1—H3C5 | 109.00 | C51—C56—H56 | 120.00 |
H3C4—C3C1—H3C6 | 110.00 | C55—C56—H56 | 120.00 |
O11—S1—C3—C2 | 60.76 (13) | S1—C3—C3A—O3B | 177.24 (12) |
O11—S1—C3—C3A | 179.45 (11) | C2—C3—C3A—O3A | 110.7 (2) |
O11—S1—C3—C31 | −56.19 (14) | C2—C3—C3A—O3B | −68.19 (18) |
O12—S1—C3—C2 | −169.24 (12) | C31—C3—C3A—O3A | −125.01 (19) |
O12—S1—C3—C3A | −50.56 (13) | C31—C3—C3A—O3B | 56.15 (19) |
O12—S1—C3—C31 | 73.80 (14) | S1—C3—C31—C32 | −70.74 (18) |
C4—S1—C3—C2 | −53.02 (13) | C2—C3—C31—C32 | 175.43 (15) |
C4—S1—C3—C3A | 65.66 (13) | C3A—C3—C31—C32 | 50.3 (2) |
C4—S1—C3—C31 | −169.97 (12) | S1—C4—C4A—O4A | −83.5 (2) |
O11—S1—C4—C4A | 59.37 (14) | S1—C4—C4A—O4B | 97.50 (15) |
O11—S1—C4—C5 | −63.46 (14) | C5—C4—C4A—O4A | 40.5 (2) |
O12—S1—C4—C4A | −69.69 (15) | C5—C4—C4A—O4B | −138.54 (15) |
O12—S1—C4—C5 | 167.49 (13) | S1—C4—C5—N1 | −54.12 (18) |
C3—S1—C4—C4A | 171.48 (13) | S1—C4—C5—C51 | −174.60 (13) |
C3—S1—C4—C5 | 48.66 (15) | C4A—C4—C5—N1 | −175.43 (15) |
C3A—O3B—C3B1—C3C1 | −114.7 (9) | C4A—C4—C5—C51 | 64.1 (2) |
C3B1—O3B—C3A—O3A | 1.1 (7) | N1—C5—C51—C52 | 123.55 (18) |
C3B1—O3B—C3A—C3 | 180.0 (6) | N1—C5—C51—C56 | −54.2 (2) |
C4B—O4B—C4A—O4A | 2.0 (3) | C4—C5—C51—C52 | −116.12 (19) |
C4B—O4B—C4A—C4 | −179.00 (14) | C4—C5—C51—C56 | 66.2 (2) |
C4A—O4B—C4B—C4C | 167.85 (18) | N1—C6—C7—C8 | 39.0 (2) |
C5—N1—C2—C3 | −77.18 (19) | C6—C7—C8—C2 | −19.6 (2) |
C5—N1—C2—C8 | 156.15 (16) | C3—C31—C32—C33 | −87.6 (2) |
C6—N1—C2—C3 | 158.50 (16) | C3—C31—C32—C37 | 96.5 (2) |
C6—N1—C2—C8 | 31.8 (2) | C31—C32—C33—C34 | −176.65 (19) |
C2—N1—C5—C4 | 66.77 (19) | C37—C32—C33—C34 | −0.6 (3) |
C2—N1—C5—C51 | −173.16 (15) | C31—C32—C37—C36 | 176.75 (19) |
C6—N1—C5—C4 | −173.57 (16) | C33—C32—C37—C36 | 0.7 (3) |
C6—N1—C5—C51 | −53.5 (2) | C32—C33—C34—C35 | 0.4 (3) |
C2—N1—C6—C7 | −44.3 (2) | C33—C34—C35—C36 | −0.3 (3) |
C5—N1—C6—C7 | −168.71 (17) | C34—C35—C36—C37 | 0.5 (4) |
N1—C2—C3—S1 | 67.82 (16) | C35—C36—C37—C32 | −0.7 (3) |
N1—C2—C3—C3A | −49.04 (18) | C5—C51—C52—C53 | −177.94 (18) |
N1—C2—C3—C31 | −175.88 (14) | C56—C51—C52—C53 | −0.2 (3) |
C8—C2—C3—S1 | −172.95 (15) | C5—C51—C56—C55 | 177.91 (18) |
C8—C2—C3—C3A | 70.2 (2) | C52—C51—C56—C55 | 0.2 (3) |
C8—C2—C3—C31 | −56.7 (2) | C51—C52—C53—C54 | −0.2 (3) |
N1—C2—C8—C7 | −7.0 (2) | C52—C53—C54—C55 | 0.6 (4) |
C3—C2—C8—C7 | −128.48 (19) | C53—C54—C55—C56 | −0.6 (4) |
S1—C3—C3A—O3A | −3.9 (2) | C54—C55—C56—C51 | 0.2 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5···O11i | 0.98 | 2.51 | 3.447 (2) | 159 |
Symmetry code: (i) −x, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C26H31NO6S |
Mr | 485.58 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 13.5232 (9), 16.8402 (12), 12.1789 (9) |
β (°) | 116.568 (1) |
V (Å3) | 2480.7 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.17 |
Crystal size (mm) | 0.22 × 0.18 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 23528, 4360, 3885 |
Rint | 0.023 |
(sin θ/λ)max (Å−1) | 0.594 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.112, 1.05 |
No. of reflections | 4360 |
No. of parameters | 328 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.21 |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009), SHELXTL/PC (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5···O11i | 0.98 | 2.51 | 3.447 (2) | 159 |
Symmetry code: (i) −x, −y+2, −z+1. |
Acknowledgements
AC and SAB sincerely thank the Vice-Chancellor and Management of Kalasalingam University, Anand Nagar, Krishnan Koil, for their support and encouragement.
References
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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.
Thiazines occupy a unique place in medicinal chemistry since they show diverse biological properties, such as antifungal, anti-inflammatory, anti-HIV, anti-psoriatic, sedative, neuroleptic, antitussive and anti-tubercular (Moriyama et al., 2004; Koketsu et al., 2002). In addition, compounds with a pyrrolidine sub-structure exhibit anti-tumour, analgesic, antidepressant, antihistaminic, anti-asthmatic and anti-Parkinson activities (Hemming & Patel, 2004; Kueh et al., 2003). Compounds containing the pyrrolothiazine scaffold have also been shown to exhibit anti-inflammatory, anti-fungal and anti-microbial activities (Armenise et al., 1998; Armenise et al., 1991).
The molecular structure of the title molecule is illustrated in Fig. 1. The five-membered pyrrolidine ring has an envelope conformation [puckering parameters: Q(2) = 0.412 (2) Å, ϕ(2) = 152.9 (3)°; Cremer & Pople, 1975], with atom C6 at the flap. The six-membered thazine ring adopts a slightly distorted chair conformation [Puckering parameters: Q(2) = 0.1011 (19) Å, ϕ(2) = 101.2 (9) ° and Q(3) = 0.6610 (17) Å]. The dihedral angle between the phenyl rings is 54.3 (1)°. The planes of the carboxylate groups (CO2) are oriented with a dihedral angle of 22.5 (3)°.
In the crystal molecules are linked via intermolecular C—H···O interactions (Desiraju & Steiner, 1999). This interaction makes a R22(10) ring motif centered about an inversion center (Table 1, Fig. 2; Etter et al., 1990).