[EN] HEXOSE DERIVATIVES, PREPARATION AND USES THEREOF<br/>[FR] DÉRIVÉS D'HEXOSE, LEUR PRÉPARATION ET UTILISATIONS
申请人:EXTREMOCHEM LDA
公开号:WO2015137838A1
公开(公告)日:2015-09-17
A compound of formula I : or a salt thereof, wherein: R1 is -OC(H) (X) (CH2)nC(=O)OH; R2 is -OH, -N3, or -N (H) C (=O) CH3; or R1 and R2 together with the carbon atoms to which they are attached form R3 is -H, -CH3, -CH2C(=O)OH, or -CH2OH; X is -H, -CH3, -CH2OH, or CH2C(=O)OH; and n is 0 or 1.
Remote Participation during Glycosylation Reactions of Galactose Building Blocks: Direct Evidence from Cryogenic Vibrational Spectroscopy
作者:Mateusz Marianski、Eike Mucha、Kim Greis、Sooyeon Moon、Alonso Pardo、Carla Kirschbaum、Daniel A. Thomas、Gerard Meijer、Gert Helden、Kerry Gilmore、Peter H. Seeberger、Kevin Pagel
DOI:10.1002/anie.201916245
日期:2020.4.6
induced by remoteparticipation of C4 or C6 ester groups. Reactions involving remoteparticipation are believed to proceed via a key ionic intermediate, the glycosyl cation. Although mechanistic pathways were postulated many years ago, the structure of the reaction intermediates remained elusive owing to their short-lived nature. Herein, we unravel the structure of glycosyl cations involved in remote participation