The present invention relates to chemical compounds having a general formula Iwherein A1-5 and 7-8, D\u2032, L1, L2, R1, R3, R6-8, n and o are defined herein, and synthetic intermediates, which are capable of modulating the activity of Aurora kinase proteins and, thereby, influencing various disease states and conditions related to the activities of Aurora kinases. The electronic device includes a housing having a battery compartment defined therein. An inner race of the ball bearing is secured to the shaft through bonding or the like.