3-azido-3deoxybetulinic acid, its preparation and pharmaceutically acceptable salts
Inese Rijkure, Zenta Tetere, Irisa Rāviņa, Daina Zicāne, Inese Mieriņa, Māris Turks

Invention relates to the field of bioorganic chemistry, particulary to preparation of 3-deoxy-3-azidobetulinic acid.A preparation process of 3-azidolupanes, particularly, diastereo-enriched 3β-azido-3-deoxybetulinic acid from 3-amino-3-deoxybetulinic acid by treatment with diazo transfer reaìent is elaborated.

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