Mannich Reaction as a New Route for the Synthesis of Tetrahydro Pyrimido Benzimidazolyl Coumarins. -15 Title compounds of type (IV) are prepared and tested for their anti-inflammatory activities. Compound (IVd) exhibits promising activity. -(MADHURA, V.; KULKARNI*, M. V.; SHAH, A.; ALAGAWADI, K. R.; J. Heterocycl. Chem. 51 (2014) 6, 1705-1711, http://dx.