Discovery of triazole tethered thymol/carvacrol-coumarin hybrids as new class of -glucosidase inhibitors with potent in vivo antihyperglycemic activities
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY(2024)
摘要
Keeping in view the inhibitory potential of monoterpenes thymol and carvacrol as well as coumarin nucleus against alpha-glucosidase, novel series of thymol/carvacrol-coumarin hybrids was designed, synthesized and evaluated for alpha-glucosidase inhibitory potential. Among the series of hybrid molecules, AS14 with IC50 value of 4.32 +/- 0.11 mu M was selective alpha-glucosidase inhibitor over alpha-amylase (IC50 = 37.36 +/- 0.84 mu M). AS14 was non-toxic toward mouse normal fibroblast cells (L929: IC50 > 100 mu M). Molecular docking and dynamic simulation studies confirmed desired interactions of AS14 with alpha-glucosidase responsible for the inhibition of its catalysis capabilities. Acute oral toxicity study confirmed AS14 as safer molecule for in vivo pharmacological investigations with LD50 value of 300 mg/kg. AS14 also showed acute hypoglycaemic effects [reduction in blood glucose levels at 1 h of administration in maltose loading test (at 10 and 20 mg/kg by 62.65 % and 70.12 %) and sucrose loading test (at 10 and 20 mg/kg by 59.65 % and 60.23 %), respectively] as well as long term (28 days) fasting blood glucose reduction (At day 28: 10 mg/kg = 54.69 % and 20 mg/kg = 62.23 % reduction in fasting blood glucose levels) capabilities in streptozotocin induced diabetic rats. Overall study represents, AS14 as potential alpha-glucosidase inhibitor with adequate efficacy and safety profile and act as an effective hit lead for the further development of potent and safer alpha-glucosidase inhibitors for the management of postprandial hyperglycemia in diabetic patients.
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关键词
Diabetes mellitus,alpha-glucosidase,Thymol,Carvacrol,Coumarin,Triazole
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