| 摘要 |
A process for the prevention of infestation by Ixodid ticks, or for the control or eradication of infestations of Ixodid ticks, which process comprises applying to the media to be protected or to the infested media an effective amount of a composition comprising as active ingredient a thienopyrimidine derivative of general formula I: <IMAGE> I xwherein R1 is chosen from alkyl optionally substituted with hydroxy, methoxy, cycloalkyl, aryl, heteroaryl, and heterocycloalkyl groups; alkenyl; alkynyl; cycloalkyl; R3 is chosen from hydrogen, alkyl and acyl; or R1 and R3 together form a saturated or unsaturated alkylene or heteroalkylene bridging group; R2 is chosen from hydrogen, hydroxy, mercapto, halo, cyano, optionally substituted-amino, optionally substituted hydrazino, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, cycloalkyl, aralkyl, aryl and trifluoromethyl; R5 and R6 are independently chosen from hydrogen, optionally substituted alkyl, halogen and aryl; or R5 and R6 together form a saturated alkyl bridging group; or an optical isomer thereof; or a tautomer thereof; or a salt thereof; and a carrier therefor.
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