Investigation of pancreatic lipase inhibition and molecular modeling of luteolin-5-o-glucoside, lithospermic acid and β-sitosterol compounds

Various biological activities of phenolic compounds such as anti-inflammatory, antidiabetic and antioxidant are directly related to obesity. In this context, the potential of phenolic compounds in the treatment of obesity is of great importance. Within the scope of this thesis, pancreatic lipase inhibition and molecular modeling of Luteolin-5-O-glucoside, Lithospermic acid and β-sitosterol compounds were investigated and their usability in the pharmaceutical field was investigated. The highest lipase inhibitory activity was observed in β-sitosterol compound with an IC50 value of 48.924 ± 2.10 μg/mL when compared to orlistat used as standard. When our compounds were compared, lipase inhibitory activity was found to be Luteolin 5-O-glucoside < Lithospermic acid < β-sitosterol, from smallest to largest. As a result of molecular modeling studies; β-Sitosterol, Luteolin-5-O-glucoside and Lithospermic acid compounds were determined as compounds with high binding affinity to the human lipase enzyme active site in the presence of binding free energies of -10.3, -9.7 and -9.5 kcal/mol, respectively. Our study will contribute to the development of new knowledge and treatment methods in the treatment of obesity in pharmacy, chemistry and medical sciences by shedding light on the preclinical stages.