Abstract: The present invention provides a compound represented by General Formula (1) or (1?) [in the formula, R1 and R2 each independently represents a hydrogen atom or a hydroxy group; R3 represents an alkyl group having 1 to 6 carbon atoms; R4 represents a halogen atom or an alkyl group; m indicates the number of R4 and represents an integer of 0 to 4; in a case where m is 2 or more, a plurality of R4's may be the same or different from each other; n represents an integer of 1 to 6; and n? represents an integer of 1 to 4] and a neutrophil infiltration suppressor containing the compound as an active ingredient.