Synthetic Studies on Sialoglycoconjugates 61: Synthesis of α-Series Ganglioside GM1α
Synthetic Studies on Sialoglycoconjugates 61: Synthesis of α-Series Ganglioside GM1α
复制标题
唾液酸糖缀合物 61 的合成研究:α 系列神经节苷脂 GM1α 的合成
DOI:
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发表时间:
1994
期刊:
影响因子:
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通讯作者:
A. Hasegawa
中科院分区:
文献类型:
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作者:
K. Hotta;S. Komba;H. Ishida;M. Kiso;A. Hasegawa
Abstract A stereocontrolled synthesis of α-series ganglioside GM1α (III6Neu5AcGgOse4Cer) is described. Glycosylation of 2-(trimethylsilyl)ethyl O-(2,3,6-tri-O-benzyl-β-d-galactopyranosyl)-(1→4)-2,3,6-tri-O-benzyl-β-d-glucopyranoside (1) with the suitably protected galactosamine donor, methyl 3-O-acetyl-4,6-O-benzylidene-2-deoxy-2-phthalimido-1-thio-β-d-galactopyranoside (4) gave the desired trisaccharide, which was transformed into the trisaccharide acceptor via removal of the phthaloyl and O-acetyl groups followed by N-acetylation. Glycosylation of this acceptor with methyl 3-O-benzyl-2,4,6-tri-O-benzoyl-1-thio-β-d-galactopyranoside (7) gave the asialo GM1 saccharide derivative, which was transformed into the acceptor by removal of benzylidene group. Coupling of this gangliotetraose acceptor with phenyl (methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-2-thio-d-glcero-d-galacto-2-nonulopyranosyl)onate by use of NIS-TfOH afforded the desired GM1α oligosaccharide derivative in high yield, which was tr...
DOI:
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发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Matsumoto,M;Taki,T;Samuelsson,B;Pascher,I;Hirabayashi,Y;Li,SC;Li,YT
通讯作者:
Li,YT
影响因子:
56.9
作者:
WALZ, G;ARUFFO, A;SEED, B
通讯作者:
SEED, B