700376-57-4Relevant academic research and scientific papers
Method for preparing epimer of saxagliptin heterocyclic intermediate
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Paragraph 0010; 0028-0031; 0032-0035; 0036-0039; 0040-0043, (2021/07/01)
The invention discloses a method for preparing an epimer (1S, 3R, 5S)-2-azabicyclo[3.1.0]hexane-3-carboxamide of a saxagliptin heterocyclic intermediate and a salt thereof The method comprises the following steps: racemizing (1S, 3S, 5S)-2-azabicyclo[3.1.0]hexane-3-carboxamide or the salt thereof under an alkaline condition, protecting by Boc, purifying, and removing a protecting group to form a salt, thereby obtaining the target product. Compared with the prior art, the method for preparing the epimer (1S, 3R, 5S)-2-azabicyclo[3.1.0]hexane-3-carboxamide of the saxagliptin heterocyclic intermediate and the salt thereof, disclosed by the invention, has the advantages of simple operation and high yield, and is suitable for industrial production.
