epicoccine 、
4,5-Dihydroxy-3-methoxy-2-methylbenzyl acetate 在
silver(l) oxide 作用下,
以
1,4-二氧六环 为溶剂,
以50%的产率得到rac-((6S,10aS,10bR)-6,7-dihydroxy-9-methoxy-4,10-dimethyl-5,8,11-trioxo-3,5,6,8-tetrahydro-1H,10aH-6,10b-methanobenzo[3,4]cyclohepta[1,2-c]furan-10a-yl)methyl acetate