Condensation of 2-deoxy- D -ribose with nitromethane gave, after deionization, a syrupy mixture of epimeric 1-nitro-1,3-dideoxy-hexitols. Acid hydrolysis under Nef reaction conditions produced a mixture of 3-deoxy- D -glucose and 3-deoxy- D -mannose, separable by cellulose chromatography or fractional crystallization. The glucose compound was characterized via the p -nitrophenylhydrazone and tetraacetyl
2-Deoxy-D-ribose. VI.<sup>1</sup> The Preparation of Derivatives of 3-Deoxy-D-ribo-hexonic Acid and 3-Deoxy-D-arabino-hexonic Acid Therefrom. Some Observations on the Kiliani Synthesis
作者:HARRY B. WOOD、HEWITT G. FLETCHER
DOI:10.1021/jo01065a068
日期:1961.6
[EN] PHOSPHONIC ACID CATALYST IN DEHYDRATIVE CYCLIZATION OF 5 AND 6 CARBON POLYOLS WITH IMPROVED COLOR AND PRODUCT ACCOUNTABILITY<br/>[FR] CATALYSEUR D'ACIDE PHOSPHONIQUE DANS UNE CYCLISATION DÉSHYDRATANTE DE POLYOLS DE CARBONE 5 ET 6 AVEC UNE COULEUR ET UNE CRÉDIBILITÉ DE PRODUIT AMÉLIORÉES
申请人:ARCHER DANIELS MIDLAND CO
公开号:WO2015156839A1
公开(公告)日:2015-10-15
A process for preparing materials derived from sugar alcohols such that the dehydration products exhibit better accountability and improved color to water-clear or near water-white appearance is described. In particular, the process involves employing a reducing Brnsted acid (e.g., phosphonic acid) for the catalysis of sugar alcohols to their corresponding dehydrated-cyclized products.
The side-chain conformations of N-acetyl-7-,8-,9-deoxy-, and -4,7-dideoxy-neuraminic acid and their effect on the activation of CTP:N-acylneuraminic acid cytidylyl-transferase
The conformations of the deoxy side-chain analogs of N-acetylneuraminic acid and of N-acetyl-4-deoxyneuraminic acid have been studied by n.m.r. spectroscopy, which allowed us to distinguish between local minima conformations suggested by hard-sphere calculations. The conformations were correlated with the activity with CTP: N-acetylneuraminic acid cytidylyltransferase (CMPsialate synthase; EC 2.7.7