Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other biologically active molecules. Its structure supports the formation of nitrogen-containing heterocycles, which are common in drug design. The tert-butyl ester group allows for selective deprotection under mild acidic conditions, making it valuable in multi-step organic syntheses, especially in peptide-like and medicinal chemistry applications. The compound's stereochemistry (cis configuration) is critical for achieving desired biological activity in target molecules.