The invention provides certain cycloalkyl-fused tetrahydroquinolines of the Formula (I), and their pharmaceutically acceptable salts and esters, wherein R1, R2, R7, R8, R8a, E, Y, Z, n, u, and t are as defined herein. The invention also provides pharmaceutical compositions comprising such compounds, and methods of using the compounds for treating diseases or conditions associated with with uncontrolled or inappropriate stimulation of CRTH2 function.本發明提供式(I)之某些經環烷基稠合之四氫喹啉,及其醫藥學上可接受之鹽及酯,其中R1、R2、R7、R8、R8a、E、Y、Z、n、u及t如本文所定義。本發明亦提供包含該等化合物之醫藥組合物,及使用該等化合物治療與不受控或不當地刺激CRTH2功能有關之疾病或病狀的方法。