{2,4-Dihydroxy-5-[(E)-3-(4-hydroxy-phenyl)-acryloyl]-3,3-dimethyl-6-oxo-cyclohexa-1,4-dienyl}-{2,6-dihydroxy-5-[(E)-3-(4-hydroxy-phenyl)-acryloyl]-3,3-dimethyl-4-oxo-cyclohexa-1,5-dienyl}-acetic acid 在
disodium hydrogenphosphate buffer 作用下,
以100%的产率得到2-[1-{2,6-Dihydroxy-5-[(Z)-3-(4-hydroxy-phenyl)-acryloyl]-3,3-dimethyl-4-oxo-cyclohexa-1,5-dienyl}-meth-(E)-ylidene]-5-hydroxy-4-[(Z)-3-(4-hydroxy-phenyl)-acryloyl]-6,6-dimethyl-cyclohex-4-ene-1,3-dione