(2S)-tert-Butyl 1-((3S)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)-2-((tert-butyldimethylsilyl)oxy)-4-oxobutyl)azetidine-2-carboxylate is an intermediate for the synthesis of Mugineic Acid Ammonium Salt (M792005). Mugineic Acid, a possible phytosiderophore of graminaceous plants, has iron chelation potency and antioxidant activity.