3-methoxy-4-(2-nitrovinyl)phenyl glycosides as potential chromogenic substrates for the assay of glycosidases
作者:Atula Patel、Anthony C. Richardson
DOI:10.1016/0008-6215(86)85043-1
日期:1986.2
nitromethane afforded the appropriate beta-glycoside of 3-methoxy-4-(2-nitrovinyl)phenol. The phenol is highly coloured at alkaline pH so that these glycosides may be suitable as chromogenic substrates for the assay of glycosidases.
2,3,4,6-四-O-乙酰基-α-D-吡喃葡萄糖基溴化物,2-乙酰氨基-3,4,6-三-O-乙酰基-α-D对2,4-二羟基苯甲醛的选择性糖苷化-吡喃葡萄糖基氯或2,3,4,6-四-O-乙酰基-α-D-吡喃半乳糖基溴化物提供相应的4-O-糖基衍生物。随后的O-甲基化,O-脱乙酰基和与硝基甲烷的缩合得到3-甲氧基-4-(2-硝基乙烯基)苯酚的合适的β-糖苷。苯酚在碱性pH值下高度着色,因此这些糖苷可能适合用作生糖酶的生色底物。