methyl-5-azido-2-N-benzyl-3-O-benzyl-2,6-imino-2,5,6-trideoxy-α-D-gulofuranoside 在
三氟化硼乙醚 、
乙酸酐 作用下,
反应 36.0h,
生成 4-O-acetyl-5-azido-2-N,3-O-dibenzyl-2,5,6-trideoxy-2,6-imino-D-guloseacetyl methyl acetal 、 4-O-acetyl-5-azido-2-N,3-O-dibenzyl-2,5,6-trideoxy-2,6-imino-D-gulose acetyl methyl acetal