Novel dialkoxytriazine-type glycosyl donors for cellulase-catalysed lactosylation
作者:Tomonari Tanaka、Masato Noguchi、Kazuhito Watanabe、Takuya Misawa、Masaki Ishihara、Atsushi Kobayashi、Shin-ichiro Shoda
DOI:10.1039/c0ob00190b
日期:——
Novel glycosidic compounds, 4,6-dialkoxy-1,3,5-triazin-2-yl β-lactosides (DAT-β-Lac), have been prepared directly in water from lactose. The reaction was carried out on a laboratory scale without protecting the hydroxy groups of lactose. The resulting triazine derivatives were found to be recognized by endo-β1,4-glucanase III from Trichoderma reesei (EGIII). The EGIII-catalysed transglycosylation of 4,6-dimethoxy-1,3,5-triazine derivative (DMT-β-Lac) with various glycosyl acceptors has successfully been demonstrated, affording the corresponding lactosylated products.
新型糖苷化合物,即4,6-二烷氧基-1,3,5-三嗪-2-基 β-乳糖苷(DAT-β-Lac),已直接在水中从乳糖制备。该反应在实验室规模进行,无需保护乳糖的羟基。所得的三嗪衍生物被发现能被来自里氏木霉(Trichoderma reesei)的内切-β1,4- glucanase III(EGIII)识别。EGIII催化的4,6-二甲氧基-1,3,5-三嗪衍生物(DMT-β-Lac)与各种糖基受体的转糖苷作用已成功展示,得到了相应的乳糖基化产物。