Synthesis of New 3,4,5-Trisubstituted Isothiazoles as Effective Inhibitory Agents of Enteroviruses
作者:Christian C.C. Cutrı̀、Adriana Garozzo、Maria A. Siracusa、Maria C. Sarvà、Angelo Castro、Ernesto Geremia、Maria R. Pinizzotto、Francesco Guerrera
DOI:10.1016/s0968-0896(98)00237-5
日期:1999.2
The synthesis and evaluation of 3,4,5-trisubstituted isothiazoles as antiviral agents led to the discovery of several compounds effective in vitro against enteroviruses polio 1 and ECHO 9. Structure-activity relationship studies revealed that a short thioalkyl chain in the 3-position and a methyl ester group in the 4-position are the structural components that, to a large extent, contribute to the positive biological profile in terms of both selectivity and low cytotoxicity. Under one-step growth conditions, methyl 3-methylthio-5-phenyl-4-isothiazolecarboxilate caused the greatest activity if added within Ih after poliovirus adsorption. These data suggest interference with early events of viral replication. (C) 1999 Elsevier Science Ltd. All rights reserved.