4-[(4R,5R,6S)-5-(tert-Butyl-diphenyl-silanyloxy)-4-dimethylamino-6-methyl-5,6-dihydro-4H-pyran-2-yl]-4-hydroxy-cyclohexa-2,5-dienone 、
三乙基氯硅烷 在
咪唑 、
4-二甲氨基吡啶 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以94%的产率得到4-[(4R,5R,6S)-5-(tert-Butyl-diphenyl-silanyloxy)-4-dimethylamino-6-methyl-5,6-dihydro-4H-pyran-2-yl]-4-triethylsilanyloxy-cyclohexa-2,5-dienone