Mannich Bases of 2-Substituted Benzimidazoles - A Review


  • Ritchu Sethi Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab-140401
  • Sandeep Arora Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab-140401
  • Neelam Jain School of Pharmaceutical Education and Research, BPS Women University, Khanpur Kalan, Sonepat, Haryana, India
  • Sandeep Jain Department of Pharmaceutical Sciences, Guru Jambheshwar University, Haryana India



Mannich Bases, Substituted Benzimidazoles, Pharmacological Activities


Mannich bases are the end products of mannich reaction and are known as beta amino ketone carrying compounds. Mannich reaction is a carbon carbon bond forming nucleophilic addition reaction which helps in synthesizing N-methyl derivatives and many other drug molecules. Mannich base derivatives of benzimidazoles possess many pharmacological properties such as anti-oxidant, anti-inflammatory, anticancer, antiviral, anthelmintic and play an important role in medical field. As these drugs are clinically useful in treatment of microbial infections and exhibit other therapeutic activities also, so this encouraged the development of more potent, novel and clinically significant compounds. In this review synthesis and various biological activities of new mannich bases of benzimidazole derivatives reported is discussed.


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Aanadhi, M.V., Verma, A.K., Sujatha, R., Kamal Raj, R. (2013) Synthesis and characterization of novel mannich bases of benzimidazole derivatives for antibacterial and antifungal activity. International Journal of Pharmacy and Pharmaceutical Sciences, 5(2) : 295-297.

Afaf, H.E., Fahmy,H.H., Abdelwahed, S.H.A. (2000) Synthesis and antimicrobial properties of some new benzimidazole derivatives.Molecules, 5: 1429-1438.

Anil, R. (2010) Mannich bases of benzimidazole-synthesis and antimicrobial properties.A short review. European J.of Chemistry, 7(1): 222-226.

Ashok, M., Holla, B.S., and Poojary. B. (2007) Convenient one pot synthesis and antimicrobial evaluation of some new Mannich bases carrying 4-methylthiobenzyl moiety. European J. of Medicinal Chemistry, 42(8): 1095-1101.

Barlin,G.B., and Jiravinya, C. (1990) Potential antimalarials.X.Di-mannich bases of 4-(7’-trifluoromethyl-1’,5’-naphthyridin-4’-ylamino)phenol and N-(4’-Diethylamino-1’- methylbutyl)-7-trifluoromethyl-1,5-naphthyridin-4-amine.Australian J. of Chemistry, 43(7): 1175-1181.

Bennet-Jenlins, E., and Baryant, C. (1996) Novel sources of anthelmintics. International J. for Paracitology, 26(8-9) : 937-947.

Bhusare,S.R., Pawar,R.P., Vibhute,Y.B. (2001) Synthesis and antibacterial activity of some new 2-(substituted phenyl sulphonamido)-6-substituted benzothiazoles. Indian J.of Heterocyclic Chemistry,11(1): 79-80.

Chakarrarvarthi, K., Gokulakrishnan, K., Suman, T., Tamilvendan, D. (2013) Synthesis,spectral,antimicrobial and antioxidant studies on diamide mannich base derivatives. International Journal of Pharmacy and Pharmaceutical Sciences, 6(1): 492-495.

Cummings, T.F., and Shelton, J.R. (1960) Mannich reaction Mechanisms.Journal of Organic chemistry, (25): 419-423.

Edwards, M.L., Ritter, H.W., Stemeric, D.M., Stewart K.T. (1983) Mannich bases of 4-phenyl3-buten-2-one:a new class of antiherpes agent. J.of Medicinal Chemistry, 26(3): 431-436.

Elarafi, M.G.,Ibrahim, M.N. (2010) Synthesis and spectral studies of mannich bases derived from 2-substituted benzimidazoles. International J. of Chem.Tech.Resr. 4: 2097-2099.

Evans, B.E., Rittle, K.E., Bock, M.G.,Hirshfield J.(1988) Methods for drug discovery, development of potent selective, orally effective cholecystokinin antagonist. J.Med.Chem. 31: 2235-2246

Gul,H.I., Vepsalainen, J., Gul, M., Erciyas, E. and Hanninen, O. (2000) Cytotoxic activities of mono and bis mannich bases derived from acetophenone against Renca and Jurkat cells. Pharmaceutica Acta Helvetiae, 74(4): 393-398.

Ivanova, Y., Momekov, G., Petrov, O., Karaivanova, M. and Kalcheva, V. (2007) Cytotoxic Mannich bases of 6-(3-aryl-2-propenoyl)-2-(3H)-benzoxazolones.European J.of Medicinal Chemistry, 52(11-12): 1382-1387.

Jesudason, E.P., Sridhar, S.K., Padma, E.J., Shanmugapandiyan, P., Inayathullah, M., Arul, V., Selvaraj, D., Jayakumar, R. (2009) E.Journal of Medicinal Chemistry, 44: 2307-2312.

Kalluraya, B., Chimbalkar, R.M. and Hedge, J.C. (2005) Anticonvulsant activity of nicotinyl/ isonicotinyl substituted 1,2,4-triazol-5-thione Mannich bases.Indian Journal of heterocyclic Chemistry, 15(1): 15-18.

Kamlesh, V., Arun, S. (2009) Design docking and synthesis of some 6-benzimidazoyl pyrans and screening of their antitubercular activity. European Journal of Chemistry, 6(1): 281-288.

Kashiyama, E., Hutchinson, I., Chua, M.S. et al. (1999) Antitumour benzothiazoles.8.1 Synthesis,metabolic formation and biological propertie of the C and N oxidation products of antitumour-2-(4-aminophenyl)-benzothiazoles. Journal of Medicinal Chemistry. 42(20): 4172-4184.

Koksal, M., Gokhan, N., Kupeli, E., Yesilada,E., Erdogan, H.(2007) Analgesic and antiinflammatory activities of some new mannich bases of 5- nitro-2-benzoxazolinones. Archives of Pharmacal Research, 30(4): 419-424.

Kumar, S.V., Subramanian, M.R., Chinnaiyan, S.K. (2013) Synthesis, characterisation and evaluation of N-mannich bases of 2-substituted Benzimidazole derivatives. Journal of Young Pharmacists, 5: 154-159.

Kumar, N., Sharma, C.N., Ranawat, M.S., Singh, H.P., Chauhan, L.S., Dashora, N. (2015) Synthesis, analgesic and anti-inflaammatory activities of novel mannich bases of benzimidazoles. Journal of Pharmaceutical Investigation, 45: 65-71.

Malinka, W., Swiatek, P., Filipek, B., Sapa, J., Jezierska, A., Koll, A. 2005) Synthesis analgesic activity and computational study of new isothiazolopyridines of mannich base type.Farmaco, 60(11-12): 961-968.

March, J. (1992) Advanced Organic Chemistry: Reaction Mechanisms and Structure, Fourth edition, A Wiley-Interscience Publication, John Wiley and Sons, New York: 900-902.

Mariappan, G., N.R.Bhuyan, N.R., Kumar, P., Kumar, D., K.Murali, K. (2011) Synthesis and biological evaluation of mannich bases of benzimidazole derivatives.Indian Journal of Chemistry, 50 B: 1216-1219.

Mason, J.S., Morize, I., Menard, P.R. (1999) New 4-point pharmacophore method for molecular similarity and diversity applications: Overview of the method and applications including a novel approach to the design of combinatorial libraries containing privileged sub-structures. J.Med. Chem. 42: 3251-3264.

Misra, P.S., Shanmugasundaram, P., Chaudhary, R., Anandhi, M.V. (2010) Synthesis of 2-phenyl benzimidazole derivatives and their Schiff bases as possible antimicrobial agents. Rasayan Journal of Chemistry. 3(1): 51-54.

Mohan Rao G, Narsimha Reddy Y, Vijaya Kumar B, Evaluation of analgesic and antiinflammatory activities of N-Mannich bases of substituted 2-mercapto-1-H-benzimidazoles. International J. of Applied Biology and Pharmaceutical Technology, 2013, 4(1),38-46.

Murugesan S., et al. (2011) J. of Pharmacy Research, 498: 2679-2681.

Padmavati, V., Subbaiah, D.R.C.V., Mahesh, K., Lakshmi, T.R. (2007) Synthesis and bioassay of amino-pyrazolone,amino isoxazolone and amino-pyrimidinone derivatives. Chem.Pharm. Bull. 55: 1704-1709.

Pandeya, S.N., Sriram, D., Nath,G., and De Clercq, E. (2000) Synthesis , antibacterial, antifungal and anti-HIV activities of norfloxacin mannich bases. European J. of Medicinal Chemistry, 35(2): 249-255.

Racane, L., Kulenovic, V.T., Jakic, L.E., Boykin, D.W., and Zamola, G.K. (2001) Synthesis of bis substituted amidino-benzothiazoles as potential anti-HIV agents. Heterocycles,

: 2085-2098.

Reddy B.A (2010) Synthesis,Characterization and biological evaluation of 1,2 disubstituted benzimidazole derivatives using mannich bases.European journal of Chemistry, 7(1): 222-226.

Rita, R., and Shrivastava, P. (2012) Synthesis and Characterization of some N-Mannich bases as potential antimicrobial,anthelmintic and insecticidal agents.Chemical Science Transactions, 1(2) : 431-439.

Saraswathi, M., Rohini, R.M., Nayeem, N. (2010) Synthesis and evaluation of mannich bases of benzimidazo [1,2-c] quinazolin- 6(5h)-thione for antimicrobial activity. Pak.J.of Pharmaceutical Sciences, 23(4): 459-462.

Scott, M.K., Martin, G.E., Distefano, D.L., et al. (1992) Pyrrole Manncih bases as potential antipsychotic agnts. J. of Medicinal chemistry, 35(3): 552-558.

Selvam P., et al. (2010) International J.of Pharmaceutical Sciences and Research, 1(9): 105-119.

Shah, T.B., Gupte, A., Patel,M.R., Patel, H.,Patel, V.C. (2009) Synthesis and in vitro study of biological activity of heterocyclic N-Mannich bases.Indian Journal of Chemistry, 48B: 88-96.

Singh, B.N., Shukla, S.K. (2007) Synthesis and biological activity of sulphadiazine schiff’s bases of isatin and their N-Mannich bases. Asian J. of Chemistry. 19(7): 5013-5018.

Spasov, A.A., Yozhitsa, I.N., Bugaeva L.I.(1999) Benzimidazole derivatives: Spectrum of Pharmacological activity and toxicological properties (a review). Pharm. Chem. Journal, 33:232-243.

Thompson, B.B. (1968) The Mannich Reaction, Mechanistic & Technological considerations. J of Pharamaceutical Sciences, 57(5): 715-733.

Vashishtha, S.C., Zello, G.A., Nienaber K.H., el al (2004) Cytotoxic and anticonvulsant aryloxy aryl mannich bases and related compounds.European Journal of Medicinal Chemistry, 2004, 39(1): 27-35.

Walia, R., Md Hedaitullah, Naaz, S.F., Iqbal, K., Lamba, H.S. (2011) Benzimidazole DerivativesAn Overview. International Journal of Research in Pharmacy & Chemistry, 1(3): 565-574.

White, A.W., Almassy, R., Calvert,A.H., Golding, B.T. (2000) Resistance modifying agents,Synthesis and Biological properties of Benzimidazole inhibitors of DNA repair enzyme Poly(ADP Ribose) polymerase.Journal of Med.Chem. 43: 4084-4097.

Zhu, Z., Lippa, B., Drach, J.C. (2000) Design Synthesis and biological evaluation of tricyclic nucleosides (Dimensional probes) as analogues of certain antiviral polyhalogenated Benzimidazole Ribonucleosides.Journal of Med. Chemistry, 43:




How to Cite

Ritchu Sethi, Sandeep Arora, Neelam Jain, & Sandeep Jain. (2015). Mannich Bases of 2-Substituted Benzimidazoles - A Review. Journal of Pharmaceutical Technology, Research and Management, 3(2), 97–111.




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