반응 #418074

반응 방정식

(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid

tert-butyl (3R)-3-(aminooxy)pyrrolidine-1-carboxylate

1-hydroxybenzotriazole

1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride

→

tert-butyl (3R)-3-[({[(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)oxy]pyrrolidine-1-carboxylate

수율 93.0%

tert-Butyl (3R)-3-[({[(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)oxy]pyrrolidine-1-carboxylate

수율 93.0%

용매

DCM

반응 조건

후처리

1. 1
   농축concentrated under vacuum
2. 2
   기타The residue was purified by column chromatography

실험 절차

To a solution of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.15 g, 0.54 mmol) in dry DCM (20 mL) were added tert-butyl (3R)-3-(aminooxy)pyrrolidine-1-carboxylate 2 (0.17 g, 0.81 mmol, J. Med. Chem. 2008, 51, 4601-4608), 1-hydroxybenzotriazole (0.11 g, 0.81 mmol) and 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.16 g, 0.81 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight, and then concentrated under vacuum. The residue was purified by column chromatography to give compound tert-butyl (3R)-3-[({[(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)oxy]pyrrolidine-1-carboxylate 3 (0.23 g, 93%) as a clear thick oil.

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