(5S,6R)-5-(tert-Butyl-dimethyl-silanyloxy)-6-trityloxymethyl-5,6-dihydro-pyran-2-one 在
lithium hydroxide 、
三苯基膦 、
偶氮二甲酸二乙酯 作用下,
生成 5-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-2-trityloxy-ethyl]-5H-furan-2-one 、 (5S,6S)-5-(tert-Butyl-dimethyl-silanyloxy)-6-trityloxymethyl-5,6-dihydro-pyran-2-one