Synthesis of novel triterpene and N-allylated/N-alkylated niacin hybrids as α-glucosidase inhibitors
摘要:
Diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia. alpha-Glucosidase (EC 3.2.1.20) inhibitors interfere with enzymatic action to slow down the liberation of D-glucose from oligosaccharides and disaccharides, resulting in delayed glucose absorption and decreased postprandial plasma glucose levels. In continuation of our drug discovery program on antidiabetic agents, we synthesized novel N-allylated/N-alkylated niacin and alpha-amyrin (4-9) and lupeol (12-16) hybrids and tested for their alpha-glucosidase inhibiting activity. Compounds 4-9 showed better activity profile than the marketed alpha-glucosidase inhibitor i.e. acarbose. Compound 4 possess the highest inhibitory action with IC50 of 5 mu M. Kinetic and CD studies revealed that 4 inhibited the alpha-glucosidase in a noncompetitive manner and caused conformational changes in secondary structure of the enzyme protein. (C) 2013 Elsevier Masson SAS. All rights reserved.
Synthesis of novel triterpene and N-allylated/N-alkylated niacin hybrids as α-glucosidase inhibitors
作者:Tadigoppula Narender、Gaurav Madhur、Natasha Jaiswal、Manali Agrawal、Chandan K. Maurya、Neha Rahuja、Arvind K. Srivastava、Akhilesh K. Tamrakar
DOI:10.1016/j.ejmech.2013.01.053
日期:2013.5
Diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia. alpha-Glucosidase (EC 3.2.1.20) inhibitors interfere with enzymatic action to slow down the liberation of D-glucose from oligosaccharides and disaccharides, resulting in delayed glucose absorption and decreased postprandial plasma glucose levels. In continuation of our drug discovery program on antidiabetic agents, we synthesized novel N-allylated/N-alkylated niacin and alpha-amyrin (4-9) and lupeol (12-16) hybrids and tested for their alpha-glucosidase inhibiting activity. Compounds 4-9 showed better activity profile than the marketed alpha-glucosidase inhibitor i.e. acarbose. Compound 4 possess the highest inhibitory action with IC50 of 5 mu M. Kinetic and CD studies revealed that 4 inhibited the alpha-glucosidase in a noncompetitive manner and caused conformational changes in secondary structure of the enzyme protein. (C) 2013 Elsevier Masson SAS. All rights reserved.