Bis-Indole Derivatives for Polysaccharide Compositional Analysis and Chiral Resolution of D-, L-Monosaccharides by Ligand Exchange Capillary Electrophoresis Using Borate-Cyclodextrin as a Chiral Selector
Various 3,3'-diindolylmethane (DIM) derivatives were synthesized and the antibacterial activity of these compounds were tested against ten bacterial strains and their minimum inhibitory concentration (MIC) values were determined. The MIC values of derivatives 3a-d and 5a-e were ranging from 125 to 500 mu g/mL. Among these derivatives, 2-(di(1H-indol-3-yl)methyl)phenol (5a) and 3-((1H-indol-3-yl)(pyridin-3-yl)methyl)-1H-indole (5d) exhibited potent activity, showing MIC values 6.5-62.5 mu g/mL against Gram positive and Gram negative bacteria. Hemolytic assay of these active DIM derivatives did not show considerable toxic effect on the normal human erythrocytes.
A mild and environmentally friendly scandium(III) trifluoromethanesulfonate-catalyzed synthesis of bis(3′-indolyl)alkanes and bis(3′-indolyl)-1-deoxyalditols
作者:Shingo Sato、Toshihiro Sato
DOI:10.1016/j.carres.2005.07.019
日期:2005.10
Bis(3'-indolyl)alkanes and bis(3'-indolyl) derivatives containing a 1-deoxyalditol moiety were synthesized in the presence of 5 mol % of scandium(III) trifluoromethanesulfonate [Sc(OTf)(3)] in CH3CN or EtOH-H2O mixture as a solvent from room temperature to 70 degrees C in good yields (78-97%). (C) 2005 Elsevier Ltd. All rights reserved.