乙酸酐 、 (2S,3S,4R)-2-Acetoxymethyl-3-((1S,3R,4R)-4,5-diacetoxy-1-methoxy-3-methyl-pentyl)-3-hydroxy-1,4-dimethyl-5-oxo-pyrrolidine-2-carboxylic acid methyl ester 生成
Acetic acid (3R,3aS,4S,6aS)-4-((2R,3R)-3,4-diacetoxy-2-methyl-butyl)-3a-hydroxy-1,3-dimethyl-2,6-dioxo-tetrahydro-furo[3,4-b]pyrrol-6a-ylmethyl ester