acetyl 3-O-acetyl-4-azido-2,4,6-trideoxy-α-L-glucopyranoside 、 Chloro-acetic acid (2R,3R,4R)-2-(toluene-4-sulfonyloxymethyl)-4-trimethylsilanyloxy-3,4-dihydro-2H-pyran-3-yl ester 在
silver perchlorate 、
四氯化锡 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
生成 Chloro-acetic acid (2R,3S,4R)-4-((2S,4S,5S,6S)-4-acetoxy-5-azido-6-methyl-tetrahydro-pyran-2-yloxy)-2-(toluene-4-sulfonyloxymethyl)-3,4-dihydro-2H-pyran-3-yl ester 、 Chloro-acetic acid (2R,3S,4R)-4-((2R,4S,5S,6S)-4-acetoxy-5-azido-6-methyl-tetrahydro-pyran-2-yloxy)-2-(toluene-4-sulfonyloxymethyl)-3,4-dihydro-2H-pyran-3-yl ester