中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-(trimethylsilyl)ethyl 2-O-benzyl-β-D-galactopyranoside | 117253-16-4 | C18H30O6Si | 370.518 |
2-(三甲基硅烷基)乙基beta-吡喃半乳糖苷 | 2-(trimethylsilyl)ethyl β-D-galactopyranoside | 117252-95-6 | C11H24O6Si | 280.393 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-(trimethylsilyl)ethyl 2,6-di-O-benzyl-3-O-(4-methoxybenzyl)-β-D-galactopyranoside | 653572-84-0 | C33H44O7Si | 580.794 |
—— | 2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-β-D-mannopyranosyl-(1->4)-2,6-di-O-benzyl-3-O-(4-methoxybenzyl)-β-D-galactopyranoside | 653572-86-2 | C60H72O12Si | 1013.31 |
—— | 2-(trimethylsilyl)ethyl β-D-galactopyranosyl-(1->3)-β-D-galactopyranoside | 120094-99-7 | C17H34O11Si | 442.536 |
Ganglioside GQ1b ? is the most potent antagonist of the Myelin-associated glycoprotein (MAG) identified so far. For the efficient synthesis of the partial structure of GQ1b ? and derivatives thereof, a chemo-enzymatic strategy using the ?(2?3)-sialyltransferase ratST3Gal III (EC 2.4.99.6) was applied. Besides the natural substrates Gal? (1?3)GlcNAc (19) and Gal? (1?4)GlcNAc (20), the disaccharides Gal? (1?3)GalNTCA?-OSE (9), Gal? (1?3)GalNAc?-OSE (11), and Gal? (1?3)Gal?-OSE (14) were also tolerated by the enzyme and were transformed to the target structures in preparative scale.