作者:Khushi Matta、Vipin Kumar、Robert Locke
DOI:10.1055/s-0029-1217972
日期:2009.10
Stereoselective syntheses of two 3-O-Gal sulfated trisaccharides GalNAcβ(1-4)[(3-SE)-Gal]β(1-3)GalNAcα-O-All and GalNAcβ(1-4)[(3-SE)-Gal]β(1-4)Glcβ-O-All were accomplished through the use of three novel glycosyl acceptors, namely, allyl 4,6-O-benzylidene-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-α-d-galactopyranoside, methyl 2,6-di-O-benzoyl-3-O-naphthylmethyl-α-d-galactopyranoside and allyl 6-O-acetyl-2-O-benzoyl-3-O-naphthylmethyl-β-d-galactopyranosyl-(1→4)-2,3,6-tri-O-benzoyl-β-d-glucopyranoside. These sulfated trisaccharides were expected to act as potential reference compounds for human β4GalNAc transferase and can be effectively used as antigens when linked to KLH.
两种3-O-Gal硫酸化三糖GalNAcβ(1-4)[(3-SE)-Gal]β(1-3)GalNAcα-O-All和GalNAcβ(1-4)[(3-SE)-Gal]β(1-4)Glcβ-O-All的立体选择性合成是通过使用三种新型糖苷受体来完成的,这三种糖苷受体分别为: allyl 4,6-O-benzylidene-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-α-d-galactopyranoside、methyl 2,6-di-O-benzoyl-3-O-naphthylmethyl-α-d-galactopyranoside和allyl 6-O-acetyl-2-O-benzoyl-3-O-naphthylmethyl-β-d-galactopyranosyl-(1→4)-2,3,6-tri-O-benzoyl-β-d-glucopyranoside。这些硫酸化三糖预计将作为人类β4GalNAc转移酶的潜在参考化合物,并且在与KLH连接时可以有效用作抗原。