3,4,5-trimethoxyphenyl 2,3,4-tri-O-phenoxyacetyl-6-O-(2,3-di-O-phenoxyacetyl-5-O-(3,4-di-O-acetylcaffeoyl)-β-D-erythro-apiofuranosyl)-β-D-glucopyranoside 在
potassium carbonate 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
以49%的产率得到(E)-3-(3,4-Diacetoxy-phenyl)-acrylic acid (3S,4R,5R)-3,4-dihydroxy-5-[(2R,3S,4S,5R,6S)-3,4,5-trihydroxy-6-(3,4,5-trimethoxy-phenoxy)-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-furan-3-ylmethyl ester