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US3975443A Expired / Lapsed US ⏱️ 0.0 years remaining

1-(3,4-dichlorobenzamidomethyl)-cyclohexyldimethylamine

Assignee: Allen and Hanburys Ltd
•
Filing: 1974-10-29
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Granted: 1976-08-17
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Expires: 1994-10-29
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Abstract

Abstract Compounds of the general formula I: ##EQU1## in which R 1 - R 4 which may be the same or different represent hydrogen atoms, or C 1 -6 straight or branched chain alkyl, alkenyl or alkynyl group or an alkyl group substituted by a cycloalkyl group, or represents a cycloalkyl, alkoxycarbonyl, aryl, arakyl, acyl (which includes anylsulphonyl) groups in which the alkyl group or the alkyl portion of the aralkyl group may be substituted with one or more hydroxy or esterified hydroxy groups and in which the aryl groups or the aryl portion of the acyl or aralkyl group may be substituted by one or more halogen atoms, alkyl groups, hydroxy groups, alkoxy groups, trifluoromethyl, nitro, amino or dialkylamino groups, and in which R 5 - R 8 which may be the same or different represent hydrogen atoms or alkyl groups except that not all groups may be hydrogen, or R 5 and R 6 or R 7 and R 8 together represent a carbonyl (=O) oxygen and in any of the pairs of groups R 1 /R 2 , R 3 /R 4 , R 5 /R 6 and R 7 /R 8 may represent a carbocyclic or heterocyclic ring system optionally substituted by lower alkyl or aryl groups, said ring being saturated or unsaturated. These compounds have utility as oral analgesics.

Inventors

  • 👤 Norman James Harper
  • 👤 George Bryan Austin Veitch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 01:37
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/135; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/20

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 1 words
1-(3,4-dichlorobenzamidomethyl)-cyclohexyldimethylamine.
Claim 2
Dependent Claim 1 words
1-(3,4-dichlorobenzamidomethyl)-cyclohexyldimethylamine.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-08-17 1980-02-16 1980-08-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-08-17 1984-02-16 1984-08-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-08-17 1988-02-16 1988-08-17 $7700.00 Window Closed / Lapsed

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