(2R,3R,4S,5R,6S)-2-(acetoxymethyl)-6-((3-(1,3-diphenyl-1H-pyrazol-5-yl)-4-oxo-4H-chromen-7-yl)oxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate 在
甲醇 、
zinc diacetate 作用下,
反应 7.0h,
以90%的产率得到3-(2,5-diphenylpyrazol-3-yl)-7-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one