Nuclear magnetic resonance study of conformation and dynamics in solution of p-(o-propyloxybenzamido)benzoate diethyl(2-hydroxyethyl)methylammonium bromide: a smooth muscle relaxant agent

The relative conformation of the aromatic rings and the amide bridge as well as important details of the two side chains of the title compound in a DMSO-d6 solution have been established by use of non-selective and selective proton spin-lattice relaxation times coupled with nOe experiments. The complete analysis of 13C spin-lattice relaxation times has shown the main features of the dynamic behavior of the title compound.