US 4,395,553 AGranted

Chemical compounds

AssigneeBristol-Myers Company

InventorsAldo A. Algieri, Ronnie R. Crenshaw

Life of this patent

Estimating the term…

Abstract

Certain 1-(substituted amino)-2-(amino or substituted amino)cyclobutene-3,4-diones are potent histamine H.sub.2 -antagonists useful in the treatment of peptic ulcers.

Claims2

Dependent claims

A compound of the formula ##STR43## wherein R.sup.12 is a conventional leaving group selected from halogen, phenoxy, substituted phenoxy and (lower)alkoxy.

Dependencies are inferred from the claim text.

Facts

Application: 06/346,455Filed 8 Feb 1982 · division
Priority: 18 May 1981
Granted: 26 Jul 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

C07D 209/48
Iso-indoles; Hydrogenated iso-indoles: with oxygen atoms in positions 1 and 3, e.g. phthalimide
C07D 211/46
Attached in position 4: having a hydrogen atom as the second substituent in position 4
C07D 211/70
Having one double bond between ring members or between a ring member and a non-ring member: with only hydrogen atoms, hydrocarbon or substituted…
C07D 213/38
Radicals substituted by singly-bound nitrogen atoms: having only hydrogen or hydrocarbon radicals attached to the substituent nitrogen atom

Family

Serial264,533Parent of this division · filed 18 May 1981
US 4,395,553 AThis patent

From the US filing history. Foreign family members aren’t listed.

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