(4R,5R)-5-{(1S,3R,4R)-3-hydroxy-1-methoxy-4-[(4S,5R)-2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl]pentyl}-4-[(2-methoxyethoxy)methoxy]-3,3-dimethyldihydrofuran-2(3H)-one 在
silica gel 作用下,
生成 (4R,5R)-5-[(1S)-2-{(4R,5R,6S)-6-[(1R)-2-hydroxy-1-methylethyl]-2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl}-1-methoxyethyl]-4-[(2-methoxyethoxy)methoxy]-3,3-dimethyldihydrofuran-2(3H)-one