4-(tert-butoxycarbonylamino)-5-O-(tert-butyldimethylsilyl)-2,3,4-trideoxy-6,7:8,9-di-O-isopropylidene-L-glycero-L-galacto-non-2-enoic acid 1,4-lactam 在
potassium permanganate 、
18-冠醚-6 作用下,
以
二氯甲烷 为溶剂,
生成 (2R,3S,4S)-2-[(S)-(tert-Butyl-dimethyl-silanyloxy)-((4S,5R,4'S)-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-methyl]-3,4-dihydroxy-5-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester