Used as a key chiral intermediate in the synthesis of the triazole antifungal drug Posaconazole. Posaconazole is effective against Candida and Aspergillus species by inhibiting lanosterol 14α-demethylase, disrupting ergosterol biosynthesis essential for fungal cell membrane integrity. The (R)-stereochemistry of the compound is critical for its biological activity, making it valuable in asymmetric synthesis for pharmaceuticals. Also employed in the development of novel enzyme inhibitors due to its structural similarity to amino acid derivatives.