[EN] METHOD FOR SEPARATING CHROMATOGRAPHICALLY INDISTINGUISHABLE 2-AZIDO-1-NITRATES<br/>[FR] PROCÉDÉ DE SÉPARATION DE 2-AZIDO-1-NITRATES INDISTINGUABLES PAR CHROMATOGRAPHIE
申请人:SINUTRON KG
公开号:WO2019002594A1
公开(公告)日:2019-01-03
The present invention discloses a method for separating chromatographically indistinguishable 1,2-diaxial from 1,2- diequatorial disaccharide 2-azido-1-nitrates, wherein the disaccharide is a 1→4 disaccharide, comprising the steps of -providing a mixture of chromatographically indistinguishable,2-diaxial from 1,2-diequatorial 2-azido-1-nitrates, -treating the mixture with a nucleophile, selected from the group of tetraalkylammonium salts, preferably tetraalkylammonium nitrate, and -obtaining the 1-axial-2-equatorial 2-azido-1-nitratefrom the treated mixture.
Synthesis of benzyl 2-azido-2-deoxy-4-O-β-d-glucopyranosyl-α-d-glucopyranoside and 1,6-anhydro-2-azido-2-deoxy-4-O-β-d-glucopyranosyl-β-d-glucopyranose
作者:Tony K.M. Shing、Arthur S. Perlin
DOI:10.1016/0008-6215(84)85270-2
日期:1984.7
-acetyl-1,5-anhydro-2-deoxy-4- O -(2,3,4,6-tetra- O -acetyl-β- d - glucopyranosyl)- d - arabino -hex-1-enitol to give 3,6-di- O -acetyl-2-azido-2-deoxy-4- O -(tetra- O -acetyl-β- d -glucopyranosyl)-β- d -glucopyranosyl nitrate, which was then converted into the benzyl α-glycoside. Minor by-products of the azidonitration reaction were also identified. For the second synthesis, 1,6-anhydro-β-cellobiose was