5,6-Dihydroimidazo[2,1-b]thiazole-2-carboxamide derivatives or salts thereof.

摘要

5,6-dihydroimidazo[2,1-b]thiazole-2-carboxamide derivatives represented by the following general formula [I]
<Chemistry id="chema01" num="0001"><Image id="ia01" he="24" wi="72" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R<Sub>1</Sub>, R<Sub>2</Sub>, R<Sub>3</Sub> and R<Sub>4</Sub> are either the same or different and mean individually a hydrogen atom or lower alkyl group, Y denotes a specific phenyl-containing substituted amino group, and their salts. These compounds have excellent immuno-modulating activities.