[(2R,3S,4R,5S)-3,4-dibenzoyloxy-5-carbamimidoylsulfanyloxolan-2-yl]methyl benzoate 、
(2S,6S)-6-acetoxymethyl-2-(2-propyloxy)-2H-pyran-3(6H)-one 在
三乙胺 作用下,
以
乙腈 为溶剂,
生成
2-propyl 6-O-acetyl-3-deoxy-4-S-(2,3,5-tri-O-benzoyl-β-D-xylofuranosyl)-4-thio-α-D-threo-hexopyranosid-2-ulose 、 2-propyl 6-O-acetyl-3-deoxy-4-S-(2,3,5-tri-O-benzoyl-α-D-xylofuranosyl)-4-thio-α-D-threo-hexopyranosid-2-ulose