(E)-3-(3,4-Diacetoxy-phenyl)-acrylic acid (4aR,6S,7R,8S,8aR)-7-[(E)-3-(3,4-diacetoxy-phenyl)-acryloyloxy]-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester 在
盐酸 作用下,
以
丙酮 为溶剂,
以38%的产率得到(E)-3-(3,4-Dihydroxy-phenyl)-acrylic acid (2S,3R,4S,5R,6R)-3-[(E)-3-(3,4-dihydroxy-phenyl)-acryloyloxy]-5-hydroxy-6-hydroxymethyl-2-methoxy-tetrahydro-pyran-4-yl ester