(3R,4S)-tert-Butyl 2-oxo-4-phenyl-3-(triethylsilyloxy)azetidine-1-carboxylate is a pharmaceutical intermediate used in the preparation of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer.

(3R,4S)-tert-Butyl 3-Amino-4-(3-bromophenyl)pyrrolidine-1-carboxylate, can be used in the synthesis of various pharmaceutical and biologically active compounds.

(3R,4S)-tert-Butyl 3-Amino-4-(trifluoromethyl)pyrrolidine-1-carboxylate, can be used in the synthesis of various pharmaceutical and biologically active compounds. It is used in the preparation of (3R,4S)- 3-aminomethyl-4-trifluoromethyl derivatives.