Abstract
Two proton transfer compounds, formed between 2-aminobenzothiazole derivatives (2-aminobenzothiazole (abt) and 2-amino-6-ethoxybenzothiazole (EtOabt)) and 5-sulfosalicylic acid dihydrate (H3ssa) as parent compounds, (Habt)+(H2ssa)− (1) and (HEtOabt)+(H2ssa)− (2) and their Cu(II) complexes (3 and 4, respectively) have been prepared and characterized using spectroscopic techniques. The single crystal X-ray diffraction method has been also applied to 3 and 4. Although 3 has a distorted octahedral form, 4 exhibits a distorted square pyramidal geometry. All compounds, including saline and diclofenac sodium as standards, have been evaluated pharmacologically for their anti-inflammatory and analgesic activities in rats and mice. Parent compounds (abt, EtOabt, and H3ssa) 3 and 4 show significant anti-inflammatory and analgesic activities as compared with control compounds.
Graphical Abstract
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Acknowledgments
The authors would like to thank Aksaray University, Science and Technology Application and Research Center, Aksaray, Turkey, for having been allowed to use the X-ray facility.