Synthesis of iminoalditol analogues of galactofuranosides and their activities against glycosidases
摘要:
Iminoalditol analogues of galactofuranosides were synthesized from 1-C-(2'-oxo-propyl)-1,4-dideoxy1,4-imino-D-galactosides and different amines by reductive amination. followed by removal of protecting groups. The activity of these compounds against galactosidases and other glycosidases was investigated. The best inhibitor against beta-galactosidase (bovine liver) is a diastereomeric mixture of an iminoalditol (10h), which contains a hydrophobic hexadecyl aglycon (R=C16H33), whereas no significant inhibitory activity was observed with compounds having a hydrophilic aglycon. Surprisingly, activation of alpha-galactosidase (coffee bean) by 10th was also observed. Because these results were obtained from a mixture of iminoalditols, the inhibition and activation of glycosidases could result from different diastereomers. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.
Synthesis of iminoalditol analogues of galactofuranosides and their activities against glycosidases
作者:Mahendra Sandbhor、Milan Bhasin、Dean T. Williams、Margaret Hsieh、Shih-Hsiung Wu、Wei Zou
DOI:10.1016/j.carres.2008.07.013
日期:2008.11
Iminoalditol analogues of galactofuranosides were synthesized from 1-C-(2'-oxo-propyl)-1,4-dideoxy1,4-imino-D-galactosides and different amines by reductive amination. followed by removal of protecting groups. The activity of these compounds against galactosidases and other glycosidases was investigated. The best inhibitor against beta-galactosidase (bovine liver) is a diastereomeric mixture of an iminoalditol (10h), which contains a hydrophobic hexadecyl aglycon (R=C16H33), whereas no significant inhibitory activity was observed with compounds having a hydrophilic aglycon. Surprisingly, activation of alpha-galactosidase (coffee bean) by 10th was also observed. Because these results were obtained from a mixture of iminoalditols, the inhibition and activation of glycosidases could result from different diastereomers. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.