PIM kinase inhibitor compound having a structure as represented by Formula I, and isomers, diastereomers, enantiomers, tautomers, and pharmaceutically acceptable salts thereof. The compounds significantly inhibit the Pim kinase activity and are used to prepare drugs to treat PIM kinase mediated diseases, such as cancers, multi drug resistance, and inflammatory bowel disease. Also provided are methods for preparing and using the compounds represented by Formula I.