(+/-)-5-bromo-6-hydroxy-2,7-dioxo-(3ar,8ac)-3,3a,6,7,8,8a-hexahydro-2H-3t,6t-methano-cyclohepta[b]furan-9syn-carboxylic acid 、
乙酰氯 在
乙酸酐 作用下,
生成 (+/-)-6-acetoxy-5-bromo-2,7-dioxo-(3a
r,8a
c)-3,3a,6,7,8,8a-hexahydro-2
H-3
t,6
t-methano-cyclohepta[
b]furan-9
syn-carboxylic acid