主权项 |
1. A compound according to the formula:wherein:
R12 is R13O—, wherein R13 is C1-4 alkyl; A is —CHR2C(O)—; Y is —NR6R7; R1 is —H or methyl; R2 is —H, methyl or hydroxymethyl; Z is a single bond; each of R6 and R7 is independently selected from —H, C1-8 alkyl, C1-4 fluoroalkyl, and C1-4 hydroxyalkyl, wherein alkyl may optionally be substituted with one or more independently selected R8; each R8 is independently selected from C1-6 alkyl, C1-4 fluoroalkyl, C1-4 hydroxyalkyl, —Z—NR10R11, —Z—C(═O)—NR10R11, —Z—OR9, halogen, and —Z—COOR9; and each R9 is independently selected from —H and C1-8 alkyl; and each R10 and R11 is independently selected from —H and C1-6 alkyl; or a pharmaceutically acceptable salt thereof. |