Some new pyrimido[1,2-a]benzimidazole derivatives were synthesized by reacting 2-amino benzimidazole and chalcones in n-butanol at reflux temperature. In our present study we have used various heterocyclic chalcones derived from furfural and substituted acetophenones. All synthesized compounds were characterized by IR, 1 H NMR and Mass spectroscopy. All synthesized compounds were screened for t...

An efficient synthesis of the angiotensin II receptor antagonist Telmisartan (1) is presented involving a cross coupling of 4-formylphenylboronic acid 10 with 2-(2-bromophenyl)-4,4-dimethyl-2-oxazoline (11) as the key step (90% yield). The benzimidazole moiety 15 was constructed regioselectively via a reductive amination-condensation sequence, replacing the alkylation of the preformed benzimida...

Cancer is the most lethal ailment throughout world in present era. The development of new anticancer remedies with minor unhealthful effects and an alternate mechanism crucial. Benzimidazole a distinguished heterocyclic compound now recognized as privileged scaffold for drug discovery. This chapter deals capability benzimidazolium salts their metal complexes. derivatives have been prepared by i...

Synthesis and Antimicrobial studies of novel Benzimidazole derivativesParmender Singh Rathee,Ritu Dhankar, Sunny Bhardwaj,Monika Gupta, Rakesh Kumar

The design and synthesis of a series of methyl 5(6)-substituted benzimidazole-2-carbamates as possible anthelmintics have been described. A rational analysis of the structural parameters which segregate the activity of resulting benzimidazole-2-carbamates against enteric and tissue dwelling helminths is presented. The influence of single and multiple spacers, which link the pharmacophores at 5(...

The asymmetric unit of the title compound, C(22)H(19)FN(2)O, contains two independent mol-ecules. The planar benzimidazole ring systems are oriented with respect to the phen-yl/fluoro-benzene rings at dihedral angles of 31.10 (4)/45.17 (5) and 45.52 (5)/68.63 (5)°, respectively, for the two mol-ecules. In the crystal structure, inter-molecular C-H⋯N and inter-molecular C-H⋯N and C-H⋯F hydrogen ...

In the cation of the title compound, C(7)H(7)N(4)O(2) (+)·Cl(-), the benzimidazole ring system is planar with a maximum deviation of -0.019 (3) Å. In the crystal structure, C-H⋯Cl, N-H⋯Cl, and N-H⋯Cl inter-actions link the mol-ecules into a two-dimensional network. π-π contacts between benzimidazole rings [centroid-centroid distances = 3.928 (1) and 3.587 (1) Å] may further stabilize the struct...

A series of 22 novel 1,2-disubstituted-1H-benzimidazole-N-alkylated-5- carboxamidine derivatives were synthesized and evaluated for in vitro antibacterial activity against S. aureus and methicillin resistant S. aureus (MRSA), E. coli, E. faecalis and for antifungal activity against C. albicans. Compound 59 [1-(2,4-dichlorobenzyl)-N- (2-diethylaminoethyl)-1H-benzimidazole-5-carboxamidine], with ...

In the title compound, C(14)H(21)N(2)Si(+)·Br(-)·H(2)O, the benzimidazole ring system is almost planar [maximum deviation = 0.021 (2) Å]. In the crystal, O-H⋯Br and C-H⋯O hydrogen bonds link the ions via the O atoms of the water mol-ecules. In addition, there are π-π stacking inter-actions between the centroids of the benzene and imidazole rings of the benzimidazole ring system [centroid-centro...

Two series of benzimidazole derivatives were sythesised. The first one was based on 5,6-dinitrobenzimidazole, the second one comprises 2-thioalkyl- and thioaryl-substituted modified benzimidazoles. Antibacterial and antiprotozoal activity of the newly obtained compounds was studied. Some thioalkyl derivatives showed remarkable activity against nosocomial strains of Stenotrophomonas malthophilia...