Patent ID: 7115618

Claim:
A retroviral protease inhibiting compound represented by the formula or a pharmaceutically acceptable salt thereof, wherein: A represents a radical selected from the group consisting of cycloalkyl; heterocycloalkyl; aryl; heteroaryl; aroyl; and cycloalkyl, aryl, heteroaryl or aroyl that is substituted at one or more carbon atoms with a radical selected from the group consisting of alkyl, alkoxy, halogen, hydroxy, amino, alkylamino, dialkylamino, nitro, cyano, haloalkyl, carboxy, alkoxycarbonyl, cycloalkyl, heterocycloallcyl, alkylamido, dialkylamido, alkylsulfonyl, and alkylsulfonylalkyl; and R 3 and R 4 independently represent radicals selected from the group consisting of alkyl; haloalkyl; alkenyl; alkynyl; hydroxyalkyl; alkoxyalkyl; cycloalkyl; cycloalkylalkyl; heterocycloalkyl; heteroaryl; heterocycloalkylalkyl; aryl; aralkyl; heteroaralkyl; aminoalkyl; aminoalkyl substituted at one or more carbon atoms with a radical selected from the group consisting of alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heteroaralkyl, heterocycloalkyl, and heterocycloalkylalkyl; and aminoalkyl substituted at two carbon atoms with radicals that, together with the nitrogen atom to which they are attached, form a heterocycloalkyl or a heteroaryl radical.