Patent ID: 6869951

Claim:
A compound; an enantiomer, diastereomer, racemate, or tautomer of the compound; or a salt of the compound, enantiomer, diastereomer, racemate, or tautomer, wherein: the compound has the following structure: R 2 is morpholinylalkyl; R 3 is selected from the group consisting of H, alkyl, alkenyl, alkynyl, cycloalkyl, haloalkyl, alkylaryl, arylalkyl, alkoxy, alkoxyalkyl, hydroxyalkyl, aminoalkyl, alkylaminoalkyl, haloalkoxy, and haloalkylthio; R 20 is selected from the group consisting of —C(O)OH, —SH, and —C(O)SH; and R 21 , R 22 , R 23 , R 24 , and R 25 are independently selected from the group consisting of H, C 1 to about C 20 alkyl, C 1 to about C 20 alkenyl, C 1 to about C 20 alkynyl, cycloalkyl, haloalkyl, alkoxyalkyl, hydroxyalkyl, aminoalkyl, alkylaminoalkyl, nitroalkyl, alkoxy, cycloalkoxy, alkoxycarbonyl, alkoxyalkyl, haloalkoxy, haloalkylthio, alkylamino, and carboxyalkyl.