2-`3-AMINO-4-(N-HYDROXYAMINO)-SUCCINYLAMINO-ACETAMIDES FOR USE AS CD23 FORMATION INHIBITORS

摘要

Compounds of formula (I): wherein X<1> is alkyl, sulphonyl or carboxy; X<2> is hydrogen or alkyl; R<1> is arylmethyl or heterocyclylmethyl; R<2> is alkyl, alkenyl, aryl, cycloalkyl or cycloalkenyl; and R<3> is hydrogen, alkyl, alkenyl, alkynyl or aryl; are useful in the treatment of disorders mediated by s-CD23.