Carbohydrate Research 2008-04-07

Chemo-enzymatic supported synthesis of the 3-sulfated Lewis a pentasaccharide on a multimeric polyethylene glycol.

Annie Malleron, Christine Le Narvor

文献索引：Carbohydr. Res. 343(5) , 970-6, (2008)

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摘要

The 3-sulfated Lewis(a) pentasaccharide was synthesized on multimeric-based polyethylene glycol support. Coupling of O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-(1-->3)-4,6-di-O-acetyl-2-deoxy-2-phthalimido-beta-D-glucopyranosyl trichloroacetimidate with (2,6-di-O-acetyl-beta-D-galactopyranosyl)-(1-->4)-(2,3,6-tri-O-acetyl-beta-D-glucopyranoside) bound onto the polymer afforded lacto-N-tetraose, which was then regioselectively sulfated at the 3-OH position of the terminal galactose using the stannylene procedure. Fucosylation of the sulfated tetrasaccharide was performed using an immobilized fucosyltransferase FucTIII to give the title compound after cleavage.

相关化合物

  • 季戊四醇
  • 三氧化硫
  • 乳糖-N-新四糖
  • 5'-二磷酸鸟嘌呤核...

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