2,4-Bis-[(4S,5S,6S)-4,5-bis-(tert-butyl-dimethyl-silanyloxy)-6-methyl-5,6-dihydro-4H-pyran-2-yl]-phenol 在
silica gel 作用下,
生成 (3S,4S,5S)-1-{5-[(4S,5S,6S)-4,5-Bis-(tert-butyl-dimethyl-silanyloxy)-6-methyl-5,6-dihydro-4H-pyran-2-yl]-2-hydroxy-phenyl}-3,4-bis-(tert-butyl-dimethyl-silanyloxy)-5-hydroxy-hexan-1-one