benzyl 2,3-O-isopropylidene-α-L-rhamnopyranoside 、 2-Azido-3,4,6-tri-O-benzyl-2-desoxy-α-D-mannopyranosylbromid 在
silver silicate 作用下,
以55%的产率得到Benzyl-4-O-(2-azido-3,4,6-tri-O-benzyl-2-desoxy-β-D-mannopyranosyl)-2,3-O-isopropyliden-α-L-rhamnopyranosid