PROCESS FOR PREPARING .gamma.-BUTYROLACTONE DERIVATIVES, AND IMMUNOMODULATING COMPOSITIONS CONTAINING THE SAME AS ACTIVE INGREDIENTS

There are disclosed .gamma. -butyrolactone derivatives represented by the following formula wherein R1, R2, R3 and X each represent a group or an atom as defined in the specification; and an immunomodulating composition containing the same as an active ingredient.

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Bibliographische Detailangaben
Hauptverfasser: OGURI, TOMEI, KADOWAKI, SHUICHIRO, MORINAKA, YASUHIRO
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:There are disclosed .gamma. -butyrolactone derivatives represented by the following formula wherein R1, R2, R3 and X each represent a group or an atom as defined in the specification; and an immunomodulating composition containing the same as an active ingredient.