Patent ID: 7393861

Claim:
A compound of the formula in racemic, enantiomeric form or all combinations of these forms wherein R 1 is —(CH 2 ) m -Z 12 wherein Z 12 is aryl optionally substituted by at least one member independently selected from the group consisting of fluoro, chloro, bromo, iodo, alkyl and alkoxy, R 2 is —C(Y)NHX 1 , Y is oxygen or sulfur; X 1 is —(CH 2 ) p -Z 22 wherein Z 22 is aryl optionally substituted by at least one member selected from the group consisting of fluoro, chloro, bromo, iodo, alkyl, alkoxy, alkylthio, CF 3 , OCF 3 , nitro, cyano, azido, piperidinosulfonyl, —C(O)—O-alkyl, —C(O)-alkyl, and phenyl, R 3 is alkyl, m is 1; p is 0; and their non-toxic pharmaceutically acceptable acid addition salts.