原甲酸三乙酯 、
(S)-3,4,5-Trihydroxy-2-[(E)-3-(4-hydroxy-phenyl)-acryloyl]-4-methyl-cyclohexa-2,5-dienone 在
sodium hydride 作用下,
反应 6.0h,
以76%的产率得到(2S,6Z)-2,5-dihydroxy-4-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]-2-methyl-6-[[(3S)-2,3,6-trihydroxy-5-[(E)-3-(4-hydroxyphenyl)prop-2-enoyl]-3-methyl-4-oxocyclohexa-1,5-dien-1-yl]methylidene]cyclohex-4-ene-1,3-dione