EP0404355A1 — Pyridopyrimidine derivatives, process for the preparation thereof and pharmaceutical compositions containing them
Assigned to SmithKline Beecham Intercredit BV · Expires 1990-12-27 · 35y expired
What this patent protects
Compounds of structure in which A is a pyridyl ring; R 1 and R 2 are the same, or different and are each hydrogen, C 1-4 alkyl, -(CH 2 )- n Ar in which n is 0 to 4 and Ar is an optionally substituted phenyl group, or R' and R 2 together with the nitrogen atom to which th…
USPTO Abstract
Compounds of structure in which A is a pyridyl ring; R 1 and R 2 are the same, or different and are each hydrogen, C 1-4 alkyl, -(CH 2 )- n Ar in which n is 0 to 4 and Ar is an optionally substituted phenyl group, or R' and R 2 together with the nitrogen atom to which they are attached form a saturated or unsaturated ring optionally containing one or more further heteroatoms; R 3 and R 4 are the same or different and are each hydrogen, C 1-4 alkyl, (CH 2 ) n Ar 1 in which n is 0 to 4 and Ar' is an optionally substituted phenyl group, or R 3 and R 4 together with the nitrogen atom to which they are attached form a saturated or unsaturated ring optionally containing one or more further heteroatoms; and R 5 is hydrogen or C 1-4 alkyl; processes for their preparation, pharmaceutical compositions containing them and their use in therapy as anti-ulcer agents.
Drugs covered by this patent
- Lumakras (SOTORASIB) · Amgen
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.
Track this patent
Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.