Antiviral Activities of Glycyrrhizin and Its Modified Compounds against Human Immunodeficiency Virus Type 1 (HIV-1) and Herpes Simplex Virus Type 1 (HSV-1) in Vitro

Abstract

Chemically modified compounds of glycyrrhizin have been synthesized and evaluated for their inhibitory effect on the replication of human immunodeficiency virus type 1 (HIV-1) and herpes simplex virus type 1 (HSV-1). Among them, the 11-deoxo compound having a heteroannular diene structure at the C and D rings proved as active against HIV-1 as glycyrrhizin in MT-4 and MOLT-4 cells. It completely inhibited HIV-1-induced cytopathogenicity in both cell lines at a concentration of 0.16 mM. The compound was also effective against HSV-1 with a 50% inhibitory concentration of 0.5 mm. © 1991, The Pharmaceutical Society of Japan. All rights reserved.