摘要 |
An agent for preventing or treating portal hypertension comprising a compound represented by the general formula (I): wherein R<1 >represents a group capable of forming an anion, etc.; X represents a bond or a spacer; n is an integer of 1 or 2; ring A is benzene ring which may be further substituted; R<2 >represents a group capable of forming an anion, etc.; and R<3 >represents a hydrocarbon group which may bonded via a hetero atom, and may be substituted, a salt thereof or a prodrug thereof, is provided. This agent has sufficiently excellent properties as medicine, since it has excellent prophylactic and therapeutic effects on portal hypertension without any side effect, etc.
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