重氮甲烷 、
acetylerioflorin 以
甲醇 、
乙醚 为溶剂,
生成 (Ξ)-3-methyl-4,5-dihydro-3
H-pyrazole-3-carboxylic acid (3Ξ,3a
R,10
Z)-9
t-acetoxy-6
c,7
t-epoxy-6
t,10-dimethyl-2-oxo-(3a
r,11a
t)-3a,4,5,6,7,8,9,11a,4',5'-decahydro-spiro[cyclodeca[
b]furan-3,3'-pyrazol]-4
t-yl ester