Compounds having the formula I wherein A, Z, R
1a
, R
1b
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
9
, R
10
, R
a
, R
b
and n are as defined herein are inhibitors of PAK1. Also disclosed are compositions and methods for treating cancer and hyperproliferative disorders.