Abstract: A pharmaceutical containing a compound having an agonist activity for LPA3 as an active ingredient, wherein the compound is of formula (IY): wherein all symbols represent the same meaning as described in the specification, and which is useful as a preventive and/or therapeutic agent for, e.g., essential thrombocythemia or reactive thrombocytosis.

Abstract: A compound represented by general formula (I) wherein all the symbols are as defined in the specification has a selective S1P5 receptor agonist activity due to having a linker from a phenyl group to a cyclic substituent in a dihydronaphthalene skeleton; i.e., due to having a short linker of one atom or less as L in general formula (I), and can therefore serve as an agent for treating S1P5-mediated disease, e. g., neurodegenerative disease such as schizophrenia.

Abstract: A compound represented by the general formula (V) wherein all the symbols are as defined in the specification, has an improved balance of the agonist activity against the S1P5 receptor relative to the S1P1 receptor, and can thus serve as a therapeutic agent for S1P5-mediated diseases such as schizophrenia and Binswanger's disease and other neurodegenerative diseases.

Abstract: A compound represented by the general formula (V) wherein all the symbols are as defined in the specification, has an improved balance of the agonist activity against the S1P5 receptor relative to the S1P1 receptor, and can thus serve as a therapeutic agent for S1P5-mediated diseases such as schizophrenia and Binswanger's disease and other neurodegenerative diseases.

Abstract: A compound represented by the general formula (V) wherein all the symbols are as defined in the specification, has an improved balance of the agonist activity against the S1P5 receptor relative to the S1P1 receptor, and can thus serve as a therapeutic agent for S1P5-mediated diseases such as schizophrenia and Binswanger's disease and other neurodegenerative diseases.

Abstract: The compound of the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis, and respiratory diseases.

Abstract: A compound of general formula (I-1): wherein the symbols are defined in the specification, has a selective S1P5 receptor binding activity and modulates the function of an S1P5 receptor, and can therefore be a therapeutic agent for a S1P5-mediated disease, for example, neurodegenerative diseases such as schizophrenia, Binswanger's disease and the like.

Abstract: The compound of the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis, and respiratory diseases.

Abstract: A compound represented by general formula (I-1): wherein the symbols are defined in the specification, has a selective S1P5 receptor binding activity and modulates the function of an S1P5 receptor, and can therefore be a therapeutic agent for a S1P5-mediated disease, for example, neurodegenerative diseases such as schizophrenia, Binswanger's disease and the like.

Abstract: The compound of the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis, and respiratory diseases.

Abstract: The compound of the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis, and respiratory diseases.

Abstract: The compound of the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis, and respiratory diseases.

Abstract: A compound represented by general formula (I) (wherein, all the symbols are as defined in the specification) has a selective S1P5 receptor agonist activity due to having a linker from a phenyl group to a cyclic substituent in a dihydronaphthalene skeleton; .i.e., due to having a short linker of one atom or less as L in general formula (I), and can therefore serve as an agent for treating S1P5-mediated disease, e.g., neurodegenerative disease such as schizophrenia.

Abstract: An object of the present invention is to provide a compound having strong human S1P2 antagonistic activity in order to develop a useful medicament for therapy of a S1P2-mediated disease such as a disease resulting from vascular constriction, fibrosis and respiratory disease. The compound represented by the general formula (I), wherein all the symbols have the same meanings as described in the specification, has a halogen atom or a haloalkyl group and a phenoxy group at certain substitution sites, and thus has strong human S1P2 antagonistic activity. Therefore, the compound can be a therapeutic agent for a S1P2-mediated disease, such as a disease resulting from vascular constriction, fibrosis and respiratory disease.

Abstract: The compound of the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis, and respiratory diseases.

Abstract: The compound represented by the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis and respiratory diseases.

Abstract: An object of the present invention is to provide a compound having strong human S1P2 antagonistic activity in order to develop a useful medicament for therapy of a S1P2-mediated disease such as a disease resulting from vascular constriction, fibrosis and respiratory disease. The compound represented by the general formula (I), wherein all the symbols have the same meanings as described in the specification, has a halogen atom or a haloalkyl group and a phenoxy group at certain substitution sites, and thus has strong human S1P2 antagonistic activity. Therefore, the compound can be a therapeutic agent for a S1P2-mediated disease, such as a disease resulting from vascular constriction, fibrosis and respiratory disease.

Abstract: The compound represented by the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis and respiratory diseases.

Abstract: The compound represented by the formula (I-1): wherein all the symbols have the same meanings as described in the specification, has two cyclic groups, particularly phenoxy groups at specific substitution positions and thus has high human S1P2 antagonistic activity. The compound may therefore be used as a therapeutic agent for S1P2-mediated diseases such as diseases resulting from vascular constriction, fibrosis and respiratory diseases.

Abstract: A compound having an ability to bind to an S1P receptor and represented by formula (I), a salt thereof, a solvate thereof or a prodrug thereof is useful for prevention and/or treatment of rejection of transplantation, graft-versus-host disease, autoimmune disease, allergic disease and the like: wherein ring A is a cyclic group; ring B is a cyclic group which may have substituent(s); X is a spacer having 1 to 8 atoms in its main chain, etc.; Y is a spacer having 1 to 10 atoms in its main chain, etc.; n is 0 or 1, wherein when n is 0, m is 1 and R1 is a hydrogen atom or a substituent, and wherein when n is 1, m is 0 or an integer of 1 to 7 and R1 is a substituent, and wherein m is 2 or more, R1s are the same or different.