THERAPEUTIC AGENT FOR NEUROPATHIC PAIN CONTAINING N-(BENZOYL)AMINO ACID DERIVATIVE AS ACTIVE INGREDIENT

摘要

[MEANS FOR SOLVING PROBLEMS] A preventive and/or therapeutic agent for neuropathic pains, characterized by containing a compound represented by the following formula (I), an optically active isomer thereof, or a pharmaceutically acceptable salt of either as an active ingredient. (Chemical formula 1) (I) (In the formula, Z is -C(CH3)2- or -CH(CH(CH3)2)-; n is 0 to 2; R<1> represents C1-4 alkyl, hydroxy, trifluoromethyl, or acetoxy; and R<2> represents hydrogen or C1-4 alkyl, provided that the case where Z is -CH(CH(CH3)2)- and R<1> is 2-position hydroxy is excluded.) [EFFECTS] The agent is capable of oral administration, is reduced in side effects, and is safer. It is highly effective in the prevention of and/or treatments for neuropathic pains and is pharmaceutically excellent.