In silico Investigation and Biological Evaluation of Synthesized Sulfamethoxazole Derivatives
School of Pharmacy, ARKA Jain University, Gamharia, Seraikela, Kharsawan, Jameshedpur, Jharkand-832 108, 1Department of Pharmaceutics, 2Department of Pharmaceutical Chemistry, Sri Jayadev College of Pharmaceutical Sciences, Bhubaneswar-752 101, 3Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan (Deemed to be University) Bhubaneswar-751 030, India
Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan (Deemed to be University) Bhubaneswar-751 030, India, E-mail: email@example.com
A series of 4-[4-(substitutedaryl/heteroaryldiazenyl]-N-(5-methylisoxazol-3-yl)benzene sulphonamide derivatives (4a-4f) were designed and synthesized coupling a mixture of diazotized sulfamethoxazole with six different phenolic and enolic compounds in an in situ reaction. The structural environment of synthesis of each molecule was confirmed by Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance and elemental analysis. These derivatives were further screened in various biological assays in vivo for analgesic and antiinflammatory activities and in vitro for antioxidant and antimicrobial activities. When tested for analgesic activity at a dose of 50 mg/kg, compounds 4-((2-hydroxynaphthalen- 1-yl)diazenyl)-N-(5-methylisoxazol-3-yl)benzene sulphonamide (4d) and 4-((4-hydroxy-5-isopropyl-2- methylphenyl)diazenyl)-N-(5-methylisoxazol-3- yl)benzene sulphonamide (4f) showed 58.33 and 57.76 % of pain inhibition, respectively. These two molecules also exhibited significant antioxidant activity at 10 and 50 μg/μl. The compound 4-[(4-hydroxy-2-oxo-2H-chromen-3-yl)diazenyl]-N-(5-methylisoxazol- 3-yl)benzene sulphonamide (4a) exhibited antibacterial activity against Staphylococcus aureus resistance, Candida albicans and DescriptionCryptococcus neoformans at a concentration of 31.25 μg/ml. The analgesic action of these synthesised analogues was predicted in molecular docking experiments with a specific target protein, cyclooxgenase-2 of Mus musculus and results indicated all tested compounds to exhibit good binding interaction with the active site amino acid of the target enzyme.