Patent ID: 7348340

Claim:
A compound of formula I, wherein: R 1 is N(R 4 ) 2 , wherein R 4 at each occurrence is independently selected from hydrogen, benzyl, C 1-6 alkyl, C 3-7 cycloalkyl, and methoxyC 1-4 alkyl; R 2 is N(R 5 ) 2 , wherein R 5 at each occurrence is independently selected from hydrogen, C 1-6 alkyl, phenylC 1-6 alkyl, C 1-6 alkenyl, C 3-7 cycloalkyl, 1-methyl-C 3-7 cycloalkyl, C 1-6 alkylcarbonyl, and C 1-6 alkoxycarbonyl; and R 3 is phenyl substituted with, NHC 1-3 alkyl, or N(C 1-3 alkyl) 2 .