5-Aminosalicylic Acid → Glucopyranosylamine

HRID 1371346

反応式

HRID 1371346 の反応式
[O:1]=[CH:2][C@@H:3]([C@H:5]([C@@H:7]([C@@H:9]([CH2:11][OH:12])[OH:10])[OH:8])[OH:6])O.C(=O)(O)[O-].[NH4+].[NH2:18]C1C=C(C(O)=O)C(O)=CC=1.C(Cl)(Cl)Cl>N1C=CC=CC=1.CO>[C@@H:11]1([NH2:18])[O:12][C@H:3]([CH2:2][OH:1])[C@@H:5]([OH:6])[C@H:7]([OH:8])[C@H:9]1[OH:10]

参加物

7

反応物 4

HCID 40755-Aminosalicylic AcidHCID 6212ChloroformHCID 14013Ammonium BicarbonateHCID 107526(2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanal

生成物 1

HCID 193433Glucopyranosylamine

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 1049Pyridine溶媒

実験手順

Beta-D-glucosylamine is prepared by the reaction of D-(+)-glucose with ammonium bicarbonate as described by Likhosherstov, L. M. et al. (Carbohydr. Res. 146: C1, 1986). A reaction mixture containing the glycosylamine and a 1- to 2-fold excess by weight of 5-aminosalicylic acid is allowed to react overnight in pyridine at 50° C. The reaction is monitored by thin-layer chromatography (TLC) (silica gel; eluent: CHCl3:MeOH, 1:1, by volume). The solvent is removed, and the reaction mixture is purified by chromatography on silica gel or BIOGEL-F2™ (BioRad, Richmond, Calif.), using absorbance at 254 nm as detection. The products are characterized by TLC on silica gel, electrospray mass spectrometry, and 1H- and 13C-NMR analysis. The transamination reaction is indicated by a downfield shift of resonance of the anomeric proton (observed at δ=4.1 ppm by analysis of the unsubstituted glycosyl-1-amine) to δ=4.3–4.7 ppm in the 1H-NMR spectrum of the β-anomer of the synthetic glycoconjugate product. (This anomer is the major product of the transamination reaction.)

後処理

  1. customThe solvent is removed
  2. customthe reaction mixture is purified by chromatography on silica gel or BIOGEL-F2™ (BioRad, Richmond, Calif.)
  3. customThe transamination reaction
  4. customthe major product of the transamination reaction

出典と根拠

ORDレコード
ord-d32a83443cc04f33b3ec521ca4cfe7ab
出典データセット
uspto-grants-2007_01
特許番号
US07157444B2

関連ノート

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