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Structural Determination of Cephalexin/β-Cyclodextrin Inclusion Complex and its Validation using Molecular Simulation Methods
Corresponding Author(s) : Harish Saraswat
Asian Journal of Chemistry,
Vol. 32 No. 4 (2020): Vol 32 Issue 4, 2020
Abstract
In this work, molecular simulation methods combining molecular docking and the structure elucidation of inclusion complex of cephalexin/β-cyclodextrin (β-CD) was determined using 1H NMR. Molecular docking studies showed that the complex formation process between β-CD and cephalexin was favourable and spontaneous because of negative values of binding energies. Molecular docking studies also confirmed the entry of aromatic ring into the cavity. Molecular mechanics studies were performed for aromatic ring of cephalexin, in different orientations and from both cavity ends, to measure the parameters of inclusion depth and mode of entry. The resultant structure was studied for HOMO-LUMO gap to validiate the method. The final structure was established using 1H NMR, molecular mechanics, HOMO-LUMO gap and molecular docking.
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References
B. Gidwani and A. Vyas, Biomed. Res. Int., 215, 198268 (2015); https://doi.org/10.1155/2015/198268
C. Szejtli, Chem. Rev., 98, 1743 (1998); https://doi.org/10.1021/cr970022c
D.L. Keeling, N.S. Oxtoby, C. Wilson, M.J. Humphry, N.R. Champness and P.H. Beton, Nano Lett., 3, 9 (2003); https://doi.org/10.1021/nl025821b
M.E. Davis and M.E. Brewster, Nat. Rev. Drug Discov., 3, 1023 (2004); https://doi.org/10.1038/nrd1576
S.E. Wheeler, Acc. Chem. Res., 46, 1029 (2013); https://doi.org/10.1021/ar300109n
Q. Li, H. Pu, P. Tang, B. Tang, Q. Sun and H. Li, Food Chem., 245, 1062 (2018); https://doi.org/10.1016/j.foodchem.2017.11.065
H.R. Ansarian, M. Derakhshan, M. Takafuji and H. Ihara, Med. Hypotheses, 71, 881 (2008); https://doi.org/10.1016/j.mehy.2008.07.033
S.M. Ali, S. Khan and G. Crowyn, Magn. Reson. Chem., 50, 299 (2012); https://doi.org/10.1002/mrc.3807
A. Maheshwari, H. Saraswat and S.K. Upadhyay, Chirality, 29, 451 (2017); https://doi.org/10.1002/chir.22712
R. Ficarra, S. Tommasini, D. Raneri, M.L. Calabrò, M.R. Di Bella, C. Rustichelli, M.C. Gamberini and P. Ficarra, J. Pharm. Biomed. Anal., 29, 1005 (2002); https://doi.org/10.1016/S0731-7085(02)00141-3
S.M. Ali, S. Muzaffar and S. Imtiaz, J. Mol. Struct., 1197, 56 (2019); https://doi.org/10.1016/j.molstruc.2019.06.080
S.M. Ali and S. Muzaffar, J. Incl. Phenom. Macrocycl. Chem., 94, 95 (2019); https://doi.org/10.1007/s10847-019-00911-z
S.M. Ali and S. Muzaffar, J. Mol. Struct., 1176, 461 (2019); https://doi.org/10.1016/j.molstruc.2018.08.086
N.L. Allinger, J. Am. Chem. Soc., 99, 8127 (1977); https://doi.org/10.1021/ja00467a001
H. Safia, L. Ismahan, G. Abdelkrim, C. Mouna, N. Leila and M. Fatiha, J. Mol. Liq., 280, 218 (2019); https://doi.org/10.1016/j.molliq.2019.01.019
W. Sneader, Cephalosporin Analogues, In: Drug Discovery: A history. Wiley: New York, p. 324 (2009).
R.M. Ahmed, M. Dani and A.A. Elbashir, Int. J. Res. Pharm. Sci., 1, 2278 (2013).
S.M. Ali, S.K. Upadhyay and A. Maheshwari, Spectroscopy, 21, 177 (2007); https://doi.org/10.1155/2007/796821
S.M. Ali and S. Shamim, J. Encap. Adsorp. Sci., 4, 63 (2014); https://doi.org/10.4236/jeas.2014.43007
S.M. Ali and S. Shamim, Magn. Reson. Chem., 53, 526 (2015); https://doi.org/10.1002/mrc.4250
A. Fifere, N. Marangoci, S. Maier, A. Coroaba, D. Maftei and M. Pinteala, Beilstein J. Org. Chem., 8, 2191 (2012); https://doi.org/10.3762/bjoc.8.247
Z.K. Eddine, M. Fatiha, Z. Amal, N. Leila and M. Rachid, Comptes Rendus Chim., 18, 193 (2015); https://doi.org/10.1016/j.crci.2014.04.012
C. Jullian, S. Miranda, G. Zapata-Torres, F. Mendizábal and C. OleaAzar, Bioorg. Med. Chem., 15, 3217 (2007); https://doi.org/10.1016/j.bmc.2007.02.035