作者:Pavla Bojarová、Lucie Petrásková、Erica Elisa Ferrandi、Daniela Monti、Helena Pelantová、Marek Kuzma、Pavla Simerská、Vladimír Křen
DOI:10.1002/adsc.200700028
日期:2007.6.4
good yields. The versatility of glycosyl azides was demonstrated in the synthesis of five disaccharides – two of them are described for the first time. All the reactions were highly regioselective, yielding β(16) isomers. β-Galactosidase from E. coli proved to have the best synthetic capabilities. The present study shows that glycosyl azides are a valuable alternative to common p-nitrophenyl glycoside
糖基叠氮化物显示为β-半乳糖苷酶,β-葡萄糖苷酶和α-甘露糖苷酶的有效供体。仅α-半乳糖苷酶不能裂解各自的叠氮糖苷1,而且它们表现出竞争性抑制作用(尤其是来自黄萎病菌(Talaromyces flavus)的α-半乳糖苷酶)。高水溶性和糖基叠氮化物的现成合成即使具有困难的受体如N-乙酰基-D-甘露糖胺也能以高收率进行转糖基化反应。五个双糖的合成证明了糖基叠氮化物的多功能性–首次描述了其中的两个。所有反应都是高度区域选择性的,产生β(16)异构体。大肠杆菌的β-半乳糖苷酶被证明具有最佳的合成能力。本研究表明,在许多合成反应中,糖基叠氮化物是常见的对硝基苯基糖苷供体的一种有价值的替代物。