| 摘要 |
Compounds represented by the following general formula (FORMULA) (wherein R<u1>u represents H, halogen, lower alkyl, lower alkoxy, lower alkylthio, lower alkylsulfinyl, lower alkylsulfonyl, nitro or cyano, R<u2>u represents lower alkoxycarbonyl or halogeno-lower-alkoxycarbonyl, R<u3>u represents H, lower alkyl, lower alkoxycarbonyl or halogeno-lower-alkoxycarbonyl, R<u4>u represents H, halogen, lower alkyl, lower alkoxy, lower alkylthio, phenyl, lower alkyl- or lower alkoxy-substituted phenyl, carboxyalkyl or aralkyloxycarbonylalkyl), a process for their preparation, and a medicinal composition containing same having an immunity-controlling action effective against chronic articular rheumatism, viral diseases, cancer, etc. |
