| 摘要 |
The invention provides compounds represented by the formula I, each of which compounds may have sphingosine-1-phosphate receptor agonist and or antagonist biological activity: Formula (I) and wherein the variables Y, R4, n, o, A, A1, A2, X, Z, R1, R3, R2, p, q and r are as defined in the specification. These compounds are useful for treating a disease or condition selected from the group consisting of glaucoma, dry eye, angiogenesis, cardiovascular conditions and diseases, and wound healing.
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