The invention recites spirocyclic derivatives of Formula (V.1) or (V.2), stereoisomers thereof, veterinary acceptable salts thereof, compositions thereof, processes for making, and their use as a parasiticide for an animal. The variables A, B, V, Z, Y, W
1
, W
2
, W
3
, R
1a
, R
1b
, R
1c
, R
2
, R
3
, R
4
, n, ad “ - - -” are as described herein.
本发明涉及公式(V.1)或(V.2)的螺环衍
生物、其立体异构体、兽医可接受的盐、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A、B、V、Z、Y、W1、W2、W3、R1a、R1b、R1c、R2、R3、R4、n和“——”如本文所述。