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US 11,884,640 B2Granted
Processes and intermediates for the preparations of benzoprostacyclin analogues and benzoprostacyclin analogues prepared therefrom
AssigneeChirogate International Inc.
InventorsChun-Yu Lin, Tzyh-Mann Wei, Shih-Yi Wei
Life of this patent
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Abstract
The invention relates to processes for preparing benzoprostacyclin analogues and intermediates prepared from the process, and the benzoprostacyclin analogues prepared therefrom. The invention also relates to cyclopentenone intermediates in racemic or optically active form.
Claims4
An optically enriched compound of Formula 4a″:
- wherein Y is Cl, Br, or I.
A racemic mixture of Formula 11,15-Syn 4b″:
- wherein Y is Cl, Br, or I.
Dependencies are inferred from the claim text.