Acetic acid (4S,5R)-4-((E)-buta-1,3-dienyl)-2-phenyl-[1,3]dioxan-5-yl ester 在
aluminum oxide 、
silver(l) 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