Structural Analogs of Umifenovir. 1. Synthesis and Biological Activity of Ethyl 5-Hydroxy-1-Methyl-2-(Trans-2-Phenylcyclopropyl)-1 H-Indole-3-Carboxylate

Ethyl 5-hydroxy-1-methyl-2-(trans-2-phenylcyclopropyl)-1H-indole-3-carboxylate is the first prototype of conformationally restricted analogs of umifenovir. It has been prepared using a one-pot method and has undergone an antiviral study. Keywords: antiviral activity; conformationally restricted analogs; umifenovir.