乙酸酐 、 Benzoic acid (1S,4R,4aS,5S,6S,7R,8R,8aS)-4,5,8-triacetoxy-1-acetoxymethyl-6,7-dihydroxy-3-oxo-octahydro-isochromen-7-ylmethyl ester 在
吡啶 作用下,
生成
Benzoic acid (1S,4R,4aS,5S,6S,7S,8R,8aS)-4,5,6,8-tetraacetoxy-1-acetoxymethyl-7-hydroxy-3-oxo-octahydro-isochromen-7-ylmethyl ester