Acetic acid (2S,3R,4S,5S,6S)-3,5-diacetoxy-2-ethoxythiocarbonylsulfanyl-6-((2S,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-ylsulfanylmethyl)-tetrahydro-pyran-4-yl ester 、
1,2,3,4-tetra-O-acetyl-6-deoxy-6-iodo-β-D-glucopyranose 在
sodium methylate 作用下,
生成 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl-(1→6)-2,3,4-tri-O-acetyl-6-thio-beta-D-glucopyranosyl-(1→6)-1,2,3,4-tetra-O-acetyl-6-thio-beta-D-glucopyranose 、 1,2,3,4-tetra-O-acetyl-6-S-[2,3,4-tri-O-acetyl-6-S-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-6-thio-β-D-glucopyranosyl]-6-thio-α-D-glucopyranose