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US4533747A Expired / Lapsed US ⏱️ 0.0 years remaining

Leukotriene antagonists intermediates

Assignee: SmithKline Beecham Corp
•
Filing: 1983-03-07
•
Granted: 1985-08-06
•
Expires: 2003-03-07
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Abstract

Abstract The compounds represented by the formula (I) ##STR1## wherein m is 0, 1 or 2; p is 9, 10, 11, 12 or 13; R 1 ' is hydrogen, ##STR2## and R 2 ' is amino, --NHCH 2 CO 2 R 3 ', ##STR3## --NHCH 2 CONH 2 or --OR 3 ' wherein R 3 ' is an alkyl radical containing one to six carbon atoms with the proviso that when m is 0, R 1 ' is hydrogen are chemical intermediates in the synthesis of leukotriene antagonists of the formula (II) ##STR4## wherein m and p, are described above and R 1 is hydrogen, amino or ##STR5## R 2 is hydroxyl, amino, --NHCH 2 CO 2 H, ##STR6## --NHCH 2 CONH 2 ; and X is ##STR7## --CO 2 H or --CH 2 OH which are useful in the treatment of diseases in which leukotrienes are a factor, such as asthma.

Inventors

  • 👤 John G. Gleason
  • 👤 Ralph F. Hall
  • 👤 Thomas W. Ku

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 12:11
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; A; A61; A61P; A61P43/00; C07C; C07C323/00; C07D303/00; C07D303/02; C07D303/12; C07D303/14; C07D303/38; C07D303/40

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 79 words
A compound represented by the structural formula (I) ##STR19## wherein m is 0, 1 or 2; p is 9, 10, 11, 12 or 13; R 1 ' is hydrogen, ##STR20## and R 2 ' is amino, --NHCH 2 CO 2 R 3 ', ##STR21## --NHCH 2 CONH 2 or --OR 3 ' wherein R 3 ' is an alkyl radical containing one to six carbon atoms with the proviso that when m is 0, R 1 ' is hydrogen.
Claim 2
Dependent Claim 79 words
A compound represented by the structural formula (I) ##STR19## wherein m is 0, 1 or 2; p is 9, 10, 11, 12 or 13; R 1 ' is hydrogen, ##STR20## and R 2 ' is amino, --NHCH 2 CO 2 R 3 ', ##STR21## --NHCH 2 CONH 2 or --OR 3 ' wherein R 3 ' is an alkyl radical containing one to six carbon atoms with the proviso that when m is 0, R 1 ' is hydrogen.
Claim 3
Dependent Claim 10 words
A compound according to claim 1 wherein p is 11.
Claim 4
Dependent Claim 23 words
A compound according to claim 2 wherein m is 1, R 1 ' is hydrogen and R 2 ' is methoxy, designated 2-[(2-carbomethoxyethyl)thio]-3(Z)-hexadecen-1-al.

References Cited (Backward Citations)

US3873624A Cited
US4177277A Cited
US4130713A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-08-05 1989-02-04 1989-08-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-08-05 1993-02-04 1993-08-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-08-05 1997-02-04 1997-08-06 $7700.00 Window Closed / Lapsed

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