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US3933905A Expired / Lapsed US ⏱️ 0.0 years remaining

(5-Oxo-10,11-dihydrodibenzo[a,d]-cyclohepten-2-yl)-alkanoic acids

Assignee: Rhone Poulenc SA
•
Filing: 1974-02-28
•
Granted: 1976-01-20
•
Expires: 1994-02-28
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Abstract

Abstract Dibenzo[a,d]cycloheptene derivatives of the formula: ##SPC1## Wherein X represents hydrogen, halogen, alkyl, alkoxy, alkylthio or trifluoromethyl, R 1 and R 2 represent hydrogen or alkyl, and R 3 represents hydroxy, alkoxy, 4-(2,2-dimethyl-1,3-dioxolanyl)-methoxy, or a group --NR 4 R 5 in which R 4 and R 5 represent hydrogen, alkyl, hydroxyalkyl or phenyl, or --NR 4 R 5 represents a mononuclear 5- or 6-membered heterocyclic group optionally containing a second hetero atom selected from oxygen, sulphur, and nitrogen which is optionally substituted by alkyl, said alkyl, alkoxy, alkylthio and hydroxyalkyl radicals containing 1 to 4 carbon atoms, are new compounds possessing pharmacological properties, more particularly analgesic, antipyretic and anti-inflammatory properties.

Inventors

  • 👤 Jean-Paul Brunet
  • 👤 Andre Cometti

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 07:57
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/18; C07D317/22; C07C; C07C51/00; C07C51/58; C07C51/60; C07C59/00; C07C59/40; C07C59/76; C07C59/86

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 29 words
A dibenzo[a,d]cycloheptene of the formula: ##SPC11## wherein R 1 is hydrogen, methyl or ethyl, or the pharmaceutically acceptable non-toxic alkali metal, alkaline earth metal, ammonium and amine salts thereof.
Claim 2
Dependent Claim 29 words
A dibenzo[a,d]cycloheptene of the formula: ##SPC11## wherein R 1 is hydrogen, methyl or ethyl, or the pharmaceutically acceptable non-toxic alkali metal, alkaline earth metal, ammonium and amine salts thereof.
Claim 3
Dependent Claim 25 words
A dibenzo[a,d]cycloheptene compound according to claim 1, which is 2-(5-oxo-10,11-dihydrodibenzo[a,d]cyclohepten-2-yl)propionic acid, or its pharmaceutically acceptable non-toxic alkali metal, alkaline earth metal, ammonium and amine salts.
Claim 4
Dependent Claim 25 words
A dibenzo[a,d]cycloheptene compound according to claim 1, which is (5-oxo-10,11-dihydrodibenzo[a,d]cyclohepten-2-yl)acetic acid, or its pharmaceutically acceptable non-toxic alkali metal, alkaline eath metal, ammonium and amine salts.
Claim 5
Dependent Claim 25 words
A dibenzo[a,d]cycloheptene compound according to claim 1 which is 2-(5-oxo-10,11-dihydrodibeno[a,d]cyclohepten-2-yl)butyric acid, or its pharmaceutically acceptable non-toxic alkali metal, alkaline earth metal, ammonium and amine salts.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-01-19 1979-07-21 1980-01-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-01-19 1983-07-21 1984-01-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-01-19 1987-07-21 1988-01-20 $7700.00 Window Closed / Lapsed

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