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US4189493A Expired / Lapsed US ⏱️ 0.0 years remaining

N-heterocyclic derivatives of thienamycin

Assignee: Merck and Co Inc
•
Filing: 1977-12-28
•
Granted: 1980-02-19
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Expires: 1997-12-28
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Abstract

Abstract Disclosed are N-derivatives of thienamycin having structures I and II. <IMAGE> I +TR <IMAGE> II wherein: the bifunctional radical may contain additional unsaturation in the ring; and wherein n is an integer selected from 1-6; p is 0, 1 or 2; R1 is selected from hydrogen, alkyl having 1-6 carbon atoms, and aryl having 6-10 carbon atoms; and Z is imino (=NH), oxo (=O), hydrogen, amino, or alkyl having 1-6 carbon atoms. Such compounds and their pharmaceutically acceptable salt and ester derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.

Inventors

  • 👤 Burton G. Christensen
  • 👤 John Hannah
  • 👤 David H. Shih

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 18:13
CPC Classifications
C; C07; C07D; C07D477/00; C07D477/10; C07D477/12; C07D477/16; C07D477/20

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 70 words
A compound having the structural formula: ##STR37## and the pharmaceutically acceptable salts thereof; wherein: R 1 is hydrogen, alkyl having from 1-6 carbon atoms or phenyl; X is imino or oxo; Y is hydrogen or alkyl having from 1-6 carbon atoms; Z is hydrogen, alkyl having from 1-6 carbon atoms or alkoxycarbonyl having from 2-7 carbon atoms; and tautomers thereof where Y or Z is hydrogen, and X is amino.
Claim 2
Dependent Claim 70 words
A compound having the structural formula: ##STR37## and the pharmaceutically acceptable salts thereof; wherein: R 1 is hydrogen, alkyl having from 1-6 carbon atoms or phenyl; X is imino or oxo; Y is hydrogen or alkyl having from 1-6 carbon atoms; Z is hydrogen, alkyl having from 1-6 carbon atoms or alkoxycarbonyl having from 2-7 carbon atoms; and tautomers thereof where Y or Z is hydrogen, and X is amino.
Claim 3
Dependent Claim 10 words
A compound according to claim 1 having the structure: ##STR38##
Claim 4
Dependent Claim 25 words
An antibiotic pharmaceutical composition comprising, in unitary dosage form, a therapeutically effective amount of a compound of claim 1 and a pharmaceutically acceptable carrier therefor.

References Cited (Backward Citations)

US3950357A Cited
US4000161A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-02-18 1983-08-20 1984-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-02-18 1987-08-20 1988-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-02-18 1991-08-20 1992-02-19 $7700.00 Window Closed / Lapsed

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