Compounds represented by the general formula (1); and pest controlling agents containing one or more of the compounds as the active ingredients, wherein A is substituted phenyl, C1-C6 alkly or the like; B is hydrogen, optionally substituted phenyl or the like; R is C1-C6 alkly, a group represented by the general formula: COR1 (wherein R1 is C1-C12 alkyl, C1-C6 alkoxy, C1-C6 haloalkyl or the like) or the like; X is halogeno, C1-C6 alkyl, C1-C6 haloalkyl or the like; and n is an integer of 1 to 5.