Selenenylsulfide-Linked Homogeneous Glycopeptides and Glycoproteins: Synthesis of Human “Hepatic Se Metabolite A”
作者:Omar Boutureira、Gonçalo J. L. Bernardes、Marta Fernández-González、Daniel C. Anthony、Benjamin G. Davis
DOI:10.1002/anie.201106658
日期:2012.2.6
Introducing selenium: The synthesis and full characterization of humanhepaticSemetabolite A has been accomplished by using a robust, efficient, and Cys‐specific selenenylation protocol (see scheme; NaPi=sodium phosphate). The selenenylsulfide linkage is sufficiently stable to allow quantification of Se‐containing glycoconjugates in biological fluids by using atomic detection methods.
硒介绍:人肝硒代谢物 A 的合成和完整表征是通过使用稳健、高效和半胱氨酸特异性硒化方案完成的(参见方案;NaPi=磷酸钠)。硒基硫键足够稳定,可以使用原子检测方法对生物体液中的含硒糖缀合物进行定量。
Stereoretentive Reactions at the Anomeric Position: Synthesis of Selenoglycosides
作者:Feng Zhu、Sloane O'Neill、Jacob Rodriguez、Maciej A. Walczak
DOI:10.1002/anie.201802847
日期:2018.6.11
Reported is the stereospecific cross‐coupling of anomeric stannanes with symmetrical diselenides, resulting in the synthesis of selenoglycosides with exclusive anomeric control. The reaction proceeds without the need for directing groups and is compatible with free hydroxy groups as demonstrated in the preparation of glycoconjugates derived from mono‐, di‐, and trisaccharides and peptides (35 examples)
A variety of functionalised organodiselenides were prepared in excellent yields from the corresponding halides and activated alcohols on treatment with tetraethylammonium tetraselenotungstate 1 under very mild conditions. (C) 2003 Elsevier Science Ltd. All rights reserved.