Five-membered iminocyclitol α-glucosidase inhibitors: Synthetic, biological screening and in silico studies
摘要:
The design and synthesis of a small library of pyrrolidine iminocyclitol inhibitors with a structural similarity to 1,4-dideoxy-1,4-imino-D-arabitol (DAB-1) is reported. This library was specifically designed to gain a better insight into the mechanism of inhibition of glycosidases by polyhydroxylated pyrrolidines or iminocyclitols. Pyrrolidine-3,4-diol 15a and pyrrolidine-3,4-diol diacetate 15b had emerged as the most potent alpha-glucosidase inhibitors in the series. Docking studies performed with an homology model of alpha-glucosidase disclosed binding poses for compounds 15a, 15b, 16a, and 16a' occupying the same region as the NH group of the terminal ring of acarbose and suggest a closer and stronger binding of compound 15a and 15b with the enzyme active site residues. Our studies indicate that 2 or 5-hydroxyl substituents appear to be vital for high inhibitory activity. (C) 2013 Elsevier Ltd. All rights reserved.
Five-membered iminocyclitol α-glucosidase inhibitors: Synthetic, biological screening and in silico studies
作者:Luis R. Guerreiro、Elisabete P. Carreiro、Luis Fernandes、Teresa A.F. Cardote、Rui Moreira、Ana T. Caldeira、Rita C. Guedes、A.J. Burke
DOI:10.1016/j.bmc.2013.01.030
日期:2013.4
The design and synthesis of a small library of pyrrolidine iminocyclitol inhibitors with a structural similarity to 1,4-dideoxy-1,4-imino-D-arabitol (DAB-1) is reported. This library was specifically designed to gain a better insight into the mechanism of inhibition of glycosidases by polyhydroxylated pyrrolidines or iminocyclitols. Pyrrolidine-3,4-diol 15a and pyrrolidine-3,4-diol diacetate 15b had emerged as the most potent alpha-glucosidase inhibitors in the series. Docking studies performed with an homology model of alpha-glucosidase disclosed binding poses for compounds 15a, 15b, 16a, and 16a' occupying the same region as the NH group of the terminal ring of acarbose and suggest a closer and stronger binding of compound 15a and 15b with the enzyme active site residues. Our studies indicate that 2 or 5-hydroxyl substituents appear to be vital for high inhibitory activity. (C) 2013 Elsevier Ltd. All rights reserved.