Transsialidase fromTrypanosoma cruzi for Regio- and Stereoselective Synthesis of N-Acyl-Modified Sialylated Oligosaccharides and Measurement of Transfer Rates
作者:Andreas Schroven、Sebastian Meinke、Patrick Ziegelmüller、Joachim Thiem
DOI:10.1002/chem.200700439
日期:2007.11.5
Recombinant transsialidase from Trypanosoma cruzi (TcTS) was used for the sialylation with natural and non-natural derivatives of neuraminic acid. Neu5Ac-alpha(2-->3)-Gal-beta(1-->6)-Glc-alphaOMe was prepared in 80 % yield. Correspondingly, the modified trisaccharide derivatives Neu5Prop-alpha(2-->3)-Gal-beta(1-->6)-Glc-alphaOMe (32 %) and Neu5Gc-alpha(2-->3)-Gal-beta(1-->6)-Glc-alphaOMe (Prop=propanoyl
来自克鲁氏锥虫(TcTS)的重组转唾液酸酶用于与神经氨酸的天然和非天然衍生物进行唾液酸化。Neu5Ac-alpha(2-> 3)-Gal-beta(1→6)-Glc-alphaOMe的制备产率为80%。相应地,修饰的三糖衍生物Neu5Prop-alpha(2-> 3)-Gal-beta(1-> 6)-Glc-alphaOMe(32%)和Neu5Gc-alpha(2-> 3)-Gal-beta以60%的收率分别获得(1→6)-Glc-alphaOMe(Prop =丙酰基,Gc =乙二醇基)。