EP2176216B1 — Methods for synthesizing 9-substituted minocycline
Assigned to Paratek Pharmaceuticals Inc · Expires 2012-04-25 · 14y expired
What this patent protects
Disclosed are methods for synthesizing a 7-, 9- and/or 10-substituted tetracycline compound of formula I comprising: a) reacting a reactive tetracycline intermediate under appropriate conditions with carbon monoxide, a palladium catalyst, a phosphine ligand, a silane and a base …
USPTO Abstract
Disclosed are methods for synthesizing a 7-, 9- and/or 10-substituted tetracycline compound of formula I comprising: a) reacting a reactive tetracycline intermediate under appropriate conditions with carbon monoxide, a palladium catalyst, a phosphine ligand, a silane and a base to generate a 7-,9- and/or 10-carboxaldehyde substituted tetracycline compound; and b) reacting said 7-, 9- and/or 10-carboxaldehyde substituted tetracycline compound from step a) under palladium catalyzed coupling conditions, hydrogenolysis conditions or reductive amination conditions to generate said 7-, 9- and/or 10-substituted tetracycline compound of formula I.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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