主权项 |
1. A compound of formula II: or a pharmaceutically acceptable salt, metabolite, solvate or prodrug thereof, wherein R is a hydrogen, C(═O)OR5, C(═O)R5, C(═O)NR5R6, or a C1-C12alkyl, R1 is C1-C12alkyl, NR5R6, OR5, SR5, or halogen; each of R2 and R3 independently is a hydrogen, an optionally substituted C1-C12alkyl or (CH2CH═C(CH3)(CH2))m—R4, wherein R4 is H, NR5R6, OR5, OC(═O)R7, C(═O)OR5, C(═O)R5, C(═O)NR5R6, halogen, 5 or 6-membered lactone, C1-C8alkyl, C2-C8alkenyl, C2-C8alkynyl, aryl, glucosyl, wherein the 5 or 6-membered lactone, C1-C8alkyl, C2-C8alkenyl, C2-C8alkynyl, aryl, and glucosyl are optionally substituted with one or more substituents selected from NR5R6, OR5, OC(═O)R7, C(═O)OR5, C(═O)R5, C(═O)NR5R6, C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, C3-C8 cycloalkyl, and C1-C8 haloalkyl; each of R5 and R6 is independently H or C1-C8alkyl; R7 is a C1-C8alkyl, OR5 or NR5R6; m=0-11. |