The synthesis of a variety of pyranose-, nucleoside-, (aminoacid)-, and polyhydric-based seleninic and selenonic acids by DMDO oxidation of the corresponding selenoesters is reported, as well as some unusual coupling reactions of the seleninate and selenonate functionality with biological nucleophilic groups (sulfhydryl, indole, phenol, imidazole, carboxamide) that are found in proteins and enzyme
[EN] NOVEL <15>O-LABELED MONOSACCHARIDE AND PRODUCING METHOD THEREOF<br/>[FR] NOUVEAU MONOSACCHARIDE MARQUÉ AU <15>O ET PROCÉDÉ DE PRODUCTION DE CELUI-CI
申请人:ASTELLAS PHARMA INC
公开号:WO2005105708A1
公开(公告)日:2005-11-10
This invention relates to novel 15O-labeled monosaccharide useful for positron emission tomography (PET) and producing method thereof.
1,2-trans methyl glycosides can be readily obtained from peracetylated sugars through their initial conversion into glycosyl iodide donors and subsequent exposure of these latter to a slight excess of sodiummethoxide in methanol. Under these conditions a varied set of mono- and disaccharide precursors afforded the corresponding 1,2-trans glycosides with concomitant de-O-acetylation in satisfying yields