作者:Ian Cumpstey、Terry D Butters、Richard J Tennant-Eyles、Antony J Fairbanks、Robert R France、Mark R Wormald
DOI:10.1016/s0008-6215(03)00255-6
日期:2003.9
The fluorescence-labelled disaccharides Glcalpha(1-->3)GlcalphaOR and Glcalpha(1-->3)ManalphaOR, both substrates for the glycoprotein-processing enzyme glucosidase II, were synthesised via the use of a n-pentenyl-derived linker at the anomeric position. This allowed incorporation of a pyrenebutyric acid label, via a sequence of oxidative hydroboration, mesylation, azide displacement, reduction with
荧光标记的二糖Glcalpha(1→3)GlcalphaOR和Glcalpha(1→3)ManalphaOR都是糖蛋白加工酶葡糖苷酶II的两个底物,是通过使用正戊烯基连接子在异头位置。这允许通过一系列的氧化氢硼化,甲磺酰化,叠氮化物置换,伴随整体脱保护的还原和肽偶联而引入a丁酸标记。通过使用三氟甲磺酸甲酯作为促进剂,很容易在正戊烯基糖苷存在下选择性活化全硫代糖苷。