FIELD: pharmacology.SUBSTANCE: invention relates to compounds of formula (Ib) in which Q is mono- or poly-M1 a substituted pyridyl, thienyl, furanyl or isothiazolyl Y is hydrogen or cyclopropyl W is oxygen or sulfur L2 is -C(R21, R22)- L3 is -C(R31, R32) - or a direct link R21, R22 each independently is hydrogen, fluorine or, if necessary, mono- or poly-M2-substituted (C1-C4)-alkyl, (C2-C4)-alkenyl, (C2-C4)-alkynyl, (C1-C4)-haloalkyl, (C1-C6)-alkoxy, (C2-C4)-alkenyloxy, (C3-C4)-alkynyloxy, (C3-C4)-cycloalkyl-(C1-C4)-alkyl or (C3-C6)-cycloalkyl R31, R32 each independently is hydrogen or (C1-C4)-alkyl M2 each independently are chlorine, fluorine, formyl, cyano, nitro, (C1-C4)-alkyl, (C1-C4)-haloalkyl, (C1-C4)-alkoxy, (C1-C4)-haloalkoxy, (C1-C4)-alkylthio, (C1-C4)-haloalkylthio, (C1-C4)-alkylsulfonyl, (C1-C4)-haloalkylsulfonyl, (C1-C4)-alkylsulfanyl, (C1-C4)-haloalkylsulfanyl, (C1-C4)-alkylcarbonyl, (C1-C4)-haloalkylcarbonyl or (C3-C6)-cycloalkyl M1 and M3 independently are halogen, cyano, nitro, OH, (C1-C10)-alkyl, (C1-C10)-haloalkyl, (C1-C10)-alkoxy, (C1-C10)-haloalkoxy, (C1-C10)-alkylthio, (C1-C10)-haloalkylthio, (C1-C10)-alkylsulfonyl, (C1-C10)-haloalkylsulfonyl, (C1-C10)-alkylsulfanyl, (C1-C10)-haloalkylsulfanyl, optionally substituted by halogen (3-14-membered cyclic group)-O- n is an integer from 0 to 4 and to their use as medicines for controlling endoparasites in animals or humans.EFFECT: increased efficiency.16 cl, 29 tblИзобретение относится к соединениям формулы (I-b),в которой Q представляет собой моно- или поли-М1-замещенный пиридил, тиенил, фуранил или изотиазолил Y представляет собой водород или циклопропил W представляет собой кислород или серу L2 представляет собой -C(R21,R22)- L3 представляет собой -С(R31,R32)- или прямую связь R21, R22 каждый независимо друг от друга представляет собой водород, фтор или при необходимости моно- или поли-М2-замещенный (С1-C4)-алкил, (С2-С4)-алкенил, (С2-С4)-алкинил, (С1-С4)-галоалкил, (С1-С6)-алкокси, (С2-С4)-алкенил
