benzoic acid (2R,3E)-5-methylhex-3-en-2-yl ester 、 2,2,4,4-Tetramethyl-oxazolidine-3-carboxylic acid 2-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-ethyl ester 以1.12 g的产率得到2,2,4,4-tetramethyloxazolidine-3-carboxylic acid (1R,2S,3E)-1-[(4S)-2,2-dimethyl-1,3-dioxolan-4-ylmethyl]-2,5-dimethylhex-3-enyl ester