methyl (1SR,3RS,6RS,7SR,10RS)-3-methoxy-2-oxo-10-[(E)-1-propenyl]-4-oxatricyclo[4.3.1.0
3,7]dec-8-ene-9-carboxylate 在
原甲酸三甲酯 作用下,
以
均三甲苯 为溶剂,
反应 8.0h,
以86%的产率得到methyl (2aRS,5SR,5aSR,8aRS,8bSR)-8a-methoxy-5-methyl-8-oxo-2a,5,5a,8,8a,8b-hexahydro-2H-benzo[cd]isobenzofuran-6-carboxylate