Biocatalysed synthesis of β-O-glucosides from 9-fluorenon-2-carbohydroxyesters. Part 3: IFN-inducing and anti-HSV-2 properties
作者:Stefano Alcaro、Adriana Arena、Rosaria Di Bella、Simonetta Neri、Rosaria Ottanà、Francesco Ortuso、Bernadette Pavone、Antonio Trincone、Maria Gabriella Vigorita
DOI:10.1016/j.bmc.2005.03.016
日期:2005.5
In pursuing research on the antiviral, interferon (IFN)-inducing tilorone congeners, a new series of fluoren-carboxyhydroxyesters has been prepared and biologically explored. These esters have subsequently been used as sugar acceptors in the enzymatic transglycosylation reaction using the 'retaining' P-glycosidase from the archaeon Sulfolobus solfataricus (Ss beta-Gly).Both aglycones (1-6) and corresponding beta-glucosides (beta-glu 1-beta-glu 6) have been screened for cytotoxicity, interferon-stimulating and antiviral properties against HSV-2.It was found that the addition of compounds beta-glu 5, beta-glu 6 and beta-glu 4 to HSV-2 infected U937 cells downregulates viral replication and triggers cells to release IFN-alpha/beta. Taken together, the results showed improved pharmacological profiles as a consequence of glycosylation. A molecular modelling study carried out on this series of compounds completed the structural characterisation of the novel compounds. (c) 2005 Elsevier Ltd. All rights reserved.