乙酸酐 、
6''-O-(p-coumaroyl)procumbide 在
吡啶 作用下,
反应 3.0h,
以4.0 mg的产率得到(E)-3-(4-Acetoxy-phenyl)-acrylic acid (2R,3R,4S,5R,6S)-3,4,5-triacetoxy-6-((1aR,1bS,2S,5aS,6S,6aS)-6-acetoxy-5a-hydroxy-1a-methyl-1a,1b,2,5a,6,6a-hexahydro-1,3-dioxa-cyclopropa[a]inden-2-yloxy)-tetrahydro-pyran-2-ylmethyl ester