Abstract
Two indeno imidazoles have been synthesized by the reaction of ninhydrin with diphenylurea and diphenylthiourea. The structures have been determined by spectral analysis. The supramolecular behavior of 3a,8a-Dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydro-indeno[1,2-d]imidazole-2,8-dione (1) was thoroughly analyzed and reported using X-ray single crystal technique and concepts. The presence of oxygen and nitrogen atoms led to very interesting supramolecular motifs interactions such as nitrogen–oxygen, nitrogen–nitrogen, oxygen–oxygen, nitrogen–hydrogen, and oxygen–hydrogen. 3a,8a-dihydroxy-1,3-diphenyl-2-thioxo-2,3,3a,8a-tetrahydro-1H-indeno[1,2-d]imidazol-8-one 2 showed good antibacterial activity against B. subtilis and P. aeruginosa, while 3a,8a-dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydro-indeno[1,2-d]imidazole-2,8-dione 1 only showed antibacterial activity against P. aeruginosa. Both of 1 and 2 were inactive against C. albicans. Derivative 2 demonstrated good cholinesterase enzyme activity unlike derivative 1 which has weak inhibitory activity against these enzymes. Furthermore, 2 was found to be a selective butyrylcholinesterase enzyme inhibitor that has potential use for prevention of further neurodegeneration as well for symptomatic treatment of Alzheimer patients.
Graphical Abstract
The non-covalent interactions involved in the crystal structure of 3a,8a-Dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydro-indeno[1,2-d]imidazole-2,8-dione (1) were investigated and reported in terms of crystal engineering and supramolecular chemistry. Different motifs of N···H and O···H interactions as well as N···O, N···N, and O···O are adopted by the crystal structure and led to a strong crystal packing.
Similar content being viewed by others
References
Hasenknopf B, Lehn J-M, Kneisel BO, Baum G, Fenske D (1996) Angew Chem Int Ed 35:1838
Day AI (2002) Angew Chem Int Ed 41:275
Bravo JA (1998) Eur J Org Chem 1998:2565
Anderson S, Anderson HL, Bashall A, McPartlin M, Sanders JKM (1995) Angew Chem Int Ed 34:1096
Freeman WA (1984) Acta Crystallogr B 40:382
Schmitt J-L, Stadler A-M, Kyritsakas N, Lehn J-M (2003) Helv Chim Acta 86:1598
Lehn JM (1993) Science 260(5115):1762
Lehn J-M (1995) Supramolecular chemistry. Wiley-VCH. ISBN 978-3527293117
Oshovsky GV, Reinhoudt DN, Verboom W (2007) Angew Chem Int Ed 46(14):2366
Alshahateet SF, Bishop R, Craig DC, Scudder ML (2011) Cryst Growth Des 11:4474–4483
Alshahateet SF, Rahman ANMM, Bishop R, Craig DC, Scudder ML (2002) CrystEngComm 4(97):585–590
MacNicol DD, Downing GR (1996) In: MacNicol D, Toda F, Bishop R (eds) Comprehensive supramolecular chemistry, vol. 6 solid-state supramolecular chemistry: crystal engineering. Pergamon Press, Oxford, Ch 14, pp 421–464
Alshahateet SF, Bishop R, Craig DC, Scudder ML (2001) CrystEngComm 3(48):225–229
Alshahateet SF, Bishop R, Craig DC, Scudder ML (2004) Cryst Growth Des 4:837–844
Kooli F, Hian PC, Weirong Q, Alshahateet SF, Chen F (2006) J Porous Mater 13:319–324
Alshahateet SF, Bishop R, Craig DC, Scudder ML (2003) CrystEngComm 3:417–421
Alshahateet SF, Bishop R, Craig DC, Scudder ML (2010) Cryst Growth Des 10:1842–1847
Alshahateet SF, Bishop R, Scudder ML, Hu CY, Lau EHE, Kooli F, Judeh ZMA, Chow PS, Tan RBH (2005) CrystEngComm 7:139–142
Alshahateet SF, Bishop R, Craig DC, Scudder ML (2001) CrystEngComm 3(55):264–269
Alshahateet SF, Bishop R, Craig DC, Kooli F, Scudder ML (2008) CrystEngComm 10:297–305
Alshahateet SF, Ong TT, Bishop R, Kooli F, Messali M (2006) Cryst Growth Des 6(7):1676–1683
Alshahateet SF, Bishop R, Craig DC, Scudder ML, Ung AT (2001) Struct Chem 12:251–257
Eloff JN (1998) Planta Med 64:711–713
Ahmed T, Gilani AH (2009) Pharmacol Biochem Behav 91:554–559
Siemens Energy and Automation, Inc (1996) SMART and SAINT software reference manuals, Version 4.0. Analytical Instrumentation, Madison, WI
Sheldrick GM (1996) SADABS. University of Göttingen, Göttingen
Sheldrick GM (2008) Acta Crystallogr A64:112–122
Weinstock M, Groner E (2008) Chem-Biol Interact 175:216–221
Mesulam M, Guillozet A, Shaw P, Quinn B (2002) Neurobiol Dis 9:88–93
Desiraju GR, Steiner T (1999) The weak hydrogen bond in structural chemistry and biology. Oxford Science Publications, Oxford
Acknowledgments
We would like to acknowledge Universiti Sains Malaysia (USM) for the Postdoctoral Fellowship to Dr. Raza Murad Ghalib. We would also like to thank Ms Liew Wai Lam, Ms Claira Arul Aruldass and Mr Mani Maran Marimuthu for their contribution in the present study.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ghalib, R.M., Hashim, R., Alshahateet, S.F. et al. Synthesis, Antimicrobial and Cholinesterase Enzymes Inhibitory Activities of Indeno Imidazoles and X-Ray Crystal Structure of 3a,8a-Dihydroxy-1,3-diphenyl-1,3,3a,8a-tetrahydro-indeno[1,2-d]imidazole-2,8-dione. J Chem Crystallogr 42, 783–789 (2012). https://doi.org/10.1007/s10870-012-0288-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10870-012-0288-7