Patent ID: 7671088

Claim:
A compound of Formula (IIa): wherein: X is a linking group selected from the group consisting of —O—, —S—, —NH—, —CO—, —CH═N—, and CH 2 NH—; R 1 is phenyl, which phenyl is unsubstituted or is substituted from one to four times with loweralkyl, hydroxy, alkoxyl, alkylogen, alkylamino, alkyoxycarbonyl, amino, halogen, nitro, or nitrile; Y is none, —NHCO—, —CONH—, or —OCO; Z is —CHR 2 (CH 2 ) n R 3 , where n is 0 to 8, or —(CH 2 ) n — is incorporated into Z as a five-, six-, seven-, or eight-membered ring; R 2 is H, and R 3 is a loweralkyl, loweralkenyl, aryl, lower alkylamino, lower alkenylamino, or arylamino; or a pharmaceutically acceptable salt thereof.