EP0333268A1 — Process for synthesis of a chiral 3-beta hydrogen (3R) 4-aroyloxy azetidinone
Assigned to Merck and Co Inc · Expires 1989-09-20 · 37y expired
What this patent protects
A process is described for the stereo-controlled synthesis of (3R,4R)-3-[(1R)-1-hydroxyethyl]-4-benzoyloxyazetidin-2-ones and their derivatives which are useful intermediates in the synthesis of carbapenem antibiotics.
USPTO Abstract
A process is described for the stereo-controlled synthesis of (3R,4R)-3-[(1R)-1-hydroxyethyl]-4-benzoyloxyazetidin-2-ones and their derivatives which are useful intermediates in the synthesis of carbapenem antibiotics.
Drugs covered by this patent
- Zetia (EZETIMIBE) · Merck & Co.
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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