主权项 |
1. A compound of formula (I): wherein: each R1, independently, is hydrogen, halogen, or —O—R4; R2 is —(CRaRb)z—R5; each R3, independently, is hydrogen, halogen, —N(R4)2, —O—R4, alkyl, alkoxy, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl; each Ra, independently, is hydrogen, halogen, hydroxy, alkyl, alkoxy, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl; each Rb, independently, is hydrogen, halogen, hydroxy, alkyl, alkoxy, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl; each R4, independently, is hydrogen or C1-C6 alkyl; R5 is hydrogen, halo, alkyl, hydroxy, alkyl, alkoxy, alkenyl, alkynyl, cycloalkyl, heterocyclyl, —N(R4)CO—R4 or Ar; Ar is aryl or heteroaryl, wherein each of aryl and heteroaryl is optionally substituted by one to five substituents independently selected from hydrogen, halogen, —R4, —N(R4)2, nitro, —(CH2)n—NHCO—R4, —O—R4, alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl; n is 0, 1, 2, or 3; x is 0, 1, 2, 3, or 4; y is 0, 1, 2, 3, or 4; and z is 0, 1, 2, 3, 4, 5, or 6; or a pharmaceutically acceptable salt thereof. |