(4aS,5R,8aR)-5-((4S,5R)-5-Acetoxy-2-phenyl-[1,3]dioxan-4-yl)-1,4-dioxo-1,5,8,8a-tetrahydro-4H-naphthalene-4a-carboxylic acid methyl ester 在
aluminum oxide 作用下,
生成 (4aS,5R,8aR)-5-((4S,5R)-5-Acetoxy-2-phenyl-[1,3]dioxan-4-yl)-1,4-dioxo-1,5,8,8a-tetrahydro-4H-naphthalene-4a-carboxylic acid methyl ester