Disclosed are compounds of Formula (I):or stereoisomers, N-oxides, salts, or prodrugs thereof； wherein: Ring A is phenyl or 5- to 6-membered heteroaryl； (i) R1 and R2 are independently C1-C4 alkyl； or (ii) R1 and R2 together with the carbon atom to which they are attached, form a cyclic group； Q is phenyl or 5- to 6-membered heteroaryl substituted with zero to 3 substituents； and R3, L1, L2, and n are defined herein. Also disclosed are methods of using such compounds as selective agonists for G protein-coupled receptor S1P1, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating, preventing, or slowing the progression of diseases or disorders in a variety of therapeutic areas, such as autoimmune diseases and vascular disease.
