乙酸酐 、
(1S,2S,3S,4S,6R)-2-Acetoxy-3,4-dihydroxy-6-((3aR,5R,6S,6aR)-6-methoxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-cyclohexanecarboxylic acid ethyl ester 在
吡啶 作用下,
生成 (1S,2S,3S,4S,6R)-2,3,4-Triacetoxy-6-((3aR,5R,6S,6aR)-6-methoxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-cyclohexanecarboxylic acid ethyl ester