Reagent Controlled Stereoselective Synthesis of α-Glucans
作者:Liming Wang、Herman S. Overkleeft、Gijsbert A. van der Marel、Jeroen D. C. Codée
DOI:10.1021/jacs.8b00669
日期:2018.4.4
is under direct control of the reagents used to activate a single type of donor building block. The activating reagents are tuned to the intrinsic reactivity of the acceptor alcohol to match the reactivity of the glycosylating agent with the reactivity of the incoming nucleophile. A protecting group strategy is introduced that is based on the sole use of benzyl-ether type protecting groups to circumvent
Novel syntheses of Idraparinux, the anticoagulant pentasaccharide with indirect selective factor Xa inhibitory activity
作者:Mihály Herczeg、Erika Mező、László Lázár、Anikó Fekete、Katalin E. Kövér、Sándor Antus、Anikó Borbás
DOI:10.1016/j.tet.2013.02.076
日期:2013.4
Idraparinux, the fully O-sulfated, O-methylated, heparin-related pentasaccharide possessing selective factor Xa inhibitoryactivity, was prepared by two novel synthetic pathways. Each route was based on a 2+3 block synthesis utilizing the same l-iduronic acid-containing trisaccharide acceptor, which was glycosylated with either a glucuronide disaccharide donor or its non-oxidized precursor. The latter