EP0050671A1 — THIAZOLO(3,2-a)PYRIMIDINE DERIVATIVES, PROCESS FOR PREPARING SAME, AND DRUG CONTAINING SAME
Assigned to Teijin Ltd · Expires 1982-05-05 · 44y expired
What this patent protects
Thiazolo(3,2-a)pyrimidine derivatives represented by the following general formula (I): wherein R represents a phenyl group or a benzyl group containing a substituent of a halogen atom, a lower alkyl group or lower alkoxy group, an alicyclic group, or an arylethyl group, and…
USPTO Abstract
Thiazolo(3,2-a)pyrimidine derivatives represented by the following general formula (I): wherein R represents a phenyl group or a benzyl group containing a substituent of a halogen atom, a lower alkyl group or lower alkoxy group, an alicyclic group, or an arylethyl group, and a process for preparing the compounds represented by the general formula (I) which comprises subjecting the compound, represented by the following general formula (II): wherein R is the same as defined above, and R' represents a halogen atom or a lower alkyloxy group, to a cyclization reaction under heating. Drugs containing the compounds as effective ingredients are useful for treating autoimmune diseases such as rheumatic arthritis, nephritis, etc.
Drugs covered by this patent
- Velsipity (Etrasimod Arginine) · Pfizer Inc.
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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