Acetic acid (2S,3R,4S,5R,6R)-4-acetoxy-6-(tert-butyl-dimethyl-silanyloxymethyl)-5-hydroxy-2-p-tolylsulfanyl-tetrahydro-pyran-3-yl ester 、 Benzoic acid (2S,3R,4S,5S,6R)-6-azidomethyl-4-(tert-butyl-dimethyl-silanyloxy)-5-hydroxy-2-p-tolylsulfanyl-tetrahydro-pyran-3-yl ester 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
以45%的产率得到Benzoic acid (2S,3R,4S,5S,6R)-6-azidomethyl-4-(tert-butyl-dimethyl-silanyloxy)-2-[(2R,3R,4S,5R,6S)-4,5-diacetoxy-2-(tert-butyl-dimethyl-silanyloxymethyl)-6-p-tolylsulfanyl-tetrahydro-pyran-3-yloxy]-5-hydroxy-tetrahydro-pyran-3-yl ester