((3aR)-6t-benzoyloxy-5c-benzoyloxymethyl-2-phenyl-(3ar,6ac)-tetrahydro-furo[2,3-d][1,3]dioxol-2c-yl)-propynoic acid methyl ester 在
sodium methylate 作用下,
以
甲醇 、
乙醚 为溶剂,
生成 4-((3a
R)-6
t-hydroxy-5
c-hydroxymethyl-2-phenyl-(3a
r,6a
c)-tetrahydro-furo[2,3-
d][1,3]dioxol-2
c-yl)-1(2)
H-pyrazole-3-carboxylic acid methyl ester