The synthesis of a trisaccharide fragment (1) of the lipoarabinomannan from Tsukamurella paurometabola is reported. Two approaches were investigated for the synthesis of the target. One was purely chemical, while the other involved the addition of one of the monosaccharide residues via a mannosyltransferase-catalyzed reaction. Both approaches produced the target in good overall yields. Thus, this chemoenzymatic approach appears to be a useful addition to the arsenal of methods for the synthesis of lipoarabinomannan-derived oligosaccharides.Key words: lipoarabinomannan, oligosaccharide, mannosyltransferase, enzymatic synthesis.
本研究报道了从月金杆菌(Tsukamurella paurometabola)中合成脂阿拉伯甘露聚糖(lipoarabinomannan)三糖片段(1)的过程。研究人员研究了合成目标物的两种方法。一种是纯化学合成,另一种是通过甘露糖基转移酶催化反应添加一个单糖残基。这两种方法都能以良好的总产率生产出目标物。因此,这种化学酶法似乎是合成脂阿拉伯宾甘露聚糖衍生低聚糖的方法库中的一个有益补充。