This invention relates to a novel fluorene derivative having a characteristic structure in which guanidino group or the like functional group is linked to the fluorene structure via carbonyl group, or a salt thereof.
The compound of the invention has an advantage in that it has high affinity for serotonin receptor subtypes, particularly for 5-HT
2B
receptor and 5-HT
7
receptor, and shows excellent pharmacological effects in comparison with the conventional compounds which have only one of the antagonistic activities of 5-HT
2B
receptor and 5-HT
7
receptor, this is useful as a prophylactic antimigraine agent having high safety and excellent effect.
The present invention relates to prophylactic antimigraine agents comprising as an active ingredient a dual antagonist for the 5-HT
2B
and 5-HT
7
receptors, the antagonist having a binding affinity selective for the 5-HT
2B
and 5-HT
7
receptors.
Since these prophylactic antimigraine agents show an excellent pharmacological effect in comparison with the cases in which a 5-HT
2B
receptor antagonist having a selective binding affinity to the 5-HT
2B
receptor or a 5-HT
7
receptor antagonist having a selective binding affinity to the 5-HT
7
receptor is used alone, they are useful as drugs which are excellent in prophylaxis of migraine and in which the side effects found in the existing prophylactic antimigraine agents are reduced.
The invention relates to a medicament for IBS, which comprises a dual antagonist for 5-HT
2B
and 5-HT
7
receptors having selective binding affinities for 5-HT
2B
and 5-HT
7
receptors.
The pharmaceutical composition of the invention is useful as a drug which is excellent in the therapeutic effect on IBS and shows lessened side effects occurring in the existing remedies for IBS, because it showed good pharmacological actions in comparison with the case of independently using a 5-HT
2B
receptor antagonist having selective binding affinity for 5-HT
2B
receptor or a 5-HT
7
receptor antagonist having selective binding affinity for 5-HT
7
receptor.
The present invention relates to prophylactic antimigraine agents comprising as an active ingredient a dual antagonist for the 5-HT2B and 5-HT7 receptors, the antagonist having a binding affinity selective for the 5-HT2B and 5-HT7 receptors.
Since these prophylactic antimigraine agents show an excellent pharmacological effect in comparison with the cases in which a 5-HT2B receptor antagonist having a selective binding affinity to the 5-HT2B receptor or a 5-HT7 receptor antagonist having a selective binding affinity to the 5-HT7 receptor is used alone, they are useful as drugs which are excellent in prophylaxis of migraine and in which the side effects found in the existing prophylactic antimigraine agents are reduced.
This invention relates to a novel fluorene derivative having a characteristic structure in which guanidino group or the like functional group is linked to the fluorene structure via carbonyl group, or a salt thereof.
The compound of the invention has an advantage in that it has high affinity for serotonin receptor subtypes, particularly for 5-HT2B receptor and 5-HT7 receptor, and shows excellent pharmacological effects in comparison with the conventional compounds which have only one of the antagonistic activities of 5-HT2B receptor and 5-HT7 receptor, this is useful as a prophylactic antimigraine agent having high safety and excellent effect.