A tropomyosin receptor kinase (Trk) antagonist having a compound of formula (I) or a pharmaceutically acceptable salt thereof,
wherein R1 is CH
3
, R2 is OCH
3
, R3 is SO
2
N(CH
3
)
2
, and R4 is H; or R1 is CH
3
, R2 is OH, R3 is SO
2
N(CH
3
)
2
, and R4 is H.
一种具有化合物(I)或其药学上可接受的盐的tropomyosin receptor kinase (Trk)拮抗剂,其中R1为
CH3,R2为O ,R3为SO2N( )2,R4为H;或R1为 ,R2为OH,R3为SO2N( )2,R4为H。