Design and Synthesis of 16-Membered Cyclopeptides Active Against Vancomycin-resistant Enterococci (VRE)
作者:Jieping Zhu
DOI:10.2533/chimia.2013.916
日期:——
The design, synthesis and antibiotic activities of the modified carboxylate binding pocket (D-O-E ring) of vancomycin (1) are summarized in this short account. The preliminary structure-activity relationship (SAR) studies indicated that both the structure of the 16-membered macrocycle including the absolute configuration of the modified AA4 unit and the presence of a hydrophobic chain were important
A modified vancomycin binding pocket (D-O-E ring) incorporating an alpha-hydroxy-beta-amino acid at the AA4 position is designed and synthesized. Some of these compounds display potent bioactivities against both sensitive- and resistant-strains (8 mu g/ml against VREF). Both the lipidated aminoglucose and the structure of the 16-membered macrocycle are found to be important for the anti-VRE activities. The polyamine appendage at the C-terminal, on the other hand, improved the activity against vancomycinsensitive strains. (c) 2005 Elsevier Ltd. All rights reserved.
Design and synthesis of macrocycles active against vancomycin-resistant enterococci (VRE): the interplay between d-Ala-d-Lac binding and hydrophobic effect
A modified vancomycin binding pocket (D-O-E ring) incorporating a CHNHCOR function at the AA4 position is designed and synthesized. Potent bioactivities against both sensitive- and resistant-strain are found for some of these compounds (MIC 4 mug/mL against VREF). From this preliminary SAR studies, it was speculated that the D-Ala-D-Ala binding was required for this series of compounds since the corresponding des-leucine derivative is inactive. The presence of long aliphatic chain was important for the desired activities and such hydrophobic effect is specific as no beneficial effect is observed when the same aliphatic chain was attached to the other part of the molecule. (C) 2004 Elsevier Ltd. All rights reserved.