The present invention relates to a fused heterocyclic derivative of the formula (I) The variables R1-R4, z, A, Q, X and Y are as defined in the claims. The following heterocycles are exemplified sub-structures of formula (I): The compounds of formula (I) are modulators of the S1P receptor (Sphingosine-1-phosphate receptor), More specifically, they are agonists of S1P5. The compounds have therapeutic use in treatment of cognitive disorders, age-relate cognitive decline and dementia.
This invention relates to new fused heterocyclic derivatives having affinity to S1P receptors, a pharmaceutical composition containing said compounds, as well as the use of said compounds for the preparation of a medicament for treating, alleviating or preventing diseases and conditions in which any S1P receptor is involved or in which modulation of the endogenous S1P signaling system via any S1P receptor is involved.