Is there a “glimepiride synthesis isocyanate sulfonylurea” patent?
Based on the information provided, I can’t identify a specific patent title, number, applicant, or jurisdiction tied to “glimepiride synthesis isocyanate sulfonylurea.” “Isocyanate sulfonylurea” also sounds like it could refer to a chemical intermediate class rather than a distinct patent.
If you share any of the following, I can help pinpoint the right patent record and explain what it covers:
- A patent number (US/EP/WO/JP etc.)
- The assignee/company name
- A link to the patent or a database entry
- The wording you saw (exact phrase from the claim/abstract)
What patents typically cover glimepiride vs. glimepiride intermediates?
For drugs like glimepiride, patents often fall into different buckets:
- Active ingredient patents (how glimepiride itself is claimed)
- Process/synthesis patents (methods to make glimepiride)
- Intermediate patents (preparing sulfonylurea or isocyanate-related intermediates used in the final step)
- Polymorph/formulation patents (solid-state forms, tablets, etc.)
- Use/exclusivity extensions (where permitted)
A phrase like “isocyanate sulfonylurea” most often points toward a process/intermediate chemistry claim, which may be separate from the basic “glimepiride” compound claims.
How do you search for the right glimepiride process patent using “isocyanate” language?
If you are doing your own search, the fastest route is usually:
- Search by synonyms for glimepiride (and brand names, if relevant)
- Add process keywords: “process for preparing,” “method of manufacture,” “intermediate”
- Add chemistry keywords: “isocyanate,” “sulfonylurea intermediate,” “carbamoyl,” “N-substituted,” and similar terms
- Filter by assignee (drug manufacturer or chemical company) and by date range
If you tell me which database you’re using (Google Patents, Espacenet, Lens.org, USPTO), I can suggest exact query strings and filters.
Is this related to “sulfonylurea” formation from an isocyanate step?
In many sulfonylurea syntheses, patents describe coupling steps that can involve activated sulfonylurea precursors or isocyanate-based intermediates. Whether a specific glimepiride patent uses an isocyanate step depends on the exact claimed route and stepwise intermediates.
To confirm a match to your phrase, I need one concrete anchor (patent number, abstract text, or a reaction scheme excerpt).
What I need from you to answer precisely
Send any one of these and I’ll take it from there:
- The patent number (even partial)
- The applicant/assignee name you saw
- The exact sentence/claim containing “isocyanate sulfonylurea”
- A screenshot or copied excerpt from the patent page
Sources
No sources were provided in your message, so I didn’t cite any.