β-D-Glcp-(1->4)-β-D-GlcpA-(1->4)-β-D-Glcp-(1->4)-L-Rha 在
sodium tetrahydroborate 作用下,
生成 (2S,3S,4R,5R,6R)-6-[(2R,3S,4R,5R,6S)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2S,3S,4S,5S)-2,4,5,6-tetrahydroxyhexan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-3-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2-carboxylic acid