The invention recites spirocyclic isoxazoline derivatives of Formula (1) stereoisomers thereof, veterinary or pharmaceutical acceptable salts thereof, compositions thereof, processes for making, and their use as a parasiticide in an animal. The variables W
1
, W
2
, W
3
, W, X, R
1a
, R
1b
, R
1c
, R
2
, R
3
, R
4
, and n are as described herein.
该发明涉及公式(1)的螺环
异噁唑衍
生物及其立体异构体,其兽医或药用可接受盐,其组合物,制备方法以及它们作为动物寄生虫药物的用途。变量W1,W2,W3,W,X,R1a,R1b,R1c,R2,R3,R4和n如本文所述。