2-hydroxyethyl (4S)-4-[(2R,5S)-5-[(1S)-2-[(1R,5S,7S)-10,10-dimethyl-3,3-dioxo-3lambda6-thia-4-azatricyclo[5.2.1.01,5]decan-4-yl]-1-hydroxy-2-oxoethyl]-5-methyloxolan-2-yl]-4-hydroxypentanoate 在
对甲苯磺酸 作用下,
以
二氯甲烷 为溶剂,
反应 8.0h,
以34 mg的产率得到(5S)-5-[(2R,5S)-5-[(1S)-2-[(1R,5S,7S)-10,10-dimethyl-3,3-dioxo-3lambda6-thia-4-azatricyclo[5.2.1.01,5]decan-4-yl]-1-hydroxy-2-oxoethyl]-5-methyloxolan-2-yl]-5-methyloxolan-2-one