1. A therapeutic or preventive agent for neuropathic pain, wherein said agent contains as an active ingredient a cyclohexane derivative represented by the formula (I) wherein A represents a substituent represented by formula (IIa) or (IIb): r and each independently represents a hydrogen atom, chlorine atom, Cgalogenalkilnuyu C-band, C-band or Calkilnuyu C-Calkoksigruppu R represents a hydrogen atom or a chlorine atom R is a fluorine atom, a hydroxymethyl group or a hydroxyl group each r and R Irrespective represents a hydrogen atom, a fluorine atom, C-Cgalogenalkilnuyu group, a carboxyl group, a methoxycarbonyl group, an ethoxycarbonyl group, C-Calkoksigruppu, a hydroxyl group or a C-alkylcarbonyloxy, or optionally together form an oxo each r and independently represents a hydrogen atom or a fluorine atom Y represents an oxygen atom or a sulfur atom Z represents a nitrogen atom or a methine group or a pharmaceutically acceptable salt or prodrug thereof and ligand α2δ calcium kanalov.2. A therapeutic or prophylactic agent according to claim 1, wherein r and each independently represents a trifluoromethyl group, a methyl group or metoksigruppu.3. A therapeutic or prophylactic agent according to claim 1 or 2, wherein R vodoroda.4 atom. A therapeutic or prophylactic agent according to claim 1 or 2, wherein R is a hydroxymethyl group or a hydroxyl gruppu.5. A therapeutic or prophylactic agent according to claim 3, wherein R is a hydroxymethyl group or a hydroxyl gruppu.6. Terapevtiches1. Терапевтическое или профилактическое средство для нейропатической боли, где указанное средство содержит в качестве активных ингредиентов производное циклогексана, представленное формулой (I)где A представляет собой заместитель, представленный формулой (IIa) или (IIb):каждый R1 и R2 независимо представляет собой атом водорода, атом хлора, C1-C3 галогеналкильную группу, C1-C4 алкильную группу или C1-C4 алкоксигруппуR3 представляет собой атом водорода или атом хлораR4 представляет собой ат
