(3R,4S,5S)-3-acetyl-5-(tert-butyldimethylsilanyloxymethyl)-3-(2-methyl[1,3]dioxolan-2-yl)-4-vinylpyrrolidin-2-one

(4S,5R)-2-Oxo-5-vinyl-oxazolidine-3,4-dicarboxylic acid 3-tert-butyl ester 4-methyl ester