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US3869445A Expired / Lapsed US ⏱️ 0.0 years remaining

4{41 -O-sulfonyl erythromycin-9-O-oxime derivatives

Assignee: Abbott Laboratories
•
Filing: 1973-12-10
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Granted: 1975-03-04
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Expires: 1993-12-10
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Abstract

Abstract Covers sulfonyl derivatives of erythromycin A, B and C falling within the following structural formula: WHERE R is selected from the group consisting of amino, monoalkyl amino, dialkyl amino, alkoxy, morpholino, substituted morpholino, piperazino, substituted piperazino, piperidino, substituted piperidino, alkylthio, alkylsulfonyl, arylthio, substituted arylthio, arylsulfonyl, substituted arylsulfonyl, thiamorpholino, aziridino, substituted aziridino, benzylthio, substituted benzylthio, thiamorpholinosulfone, substituted thiamorpholinosulfone, benzylsulfinyl, substituted benzylsulfinyl, arylsulfinyl, substituted arylsulfinyl, benzylsulfonyl, substituted benzylsulfonyl, cyanoalkyl, halocyanoalkyl, haloalkanoate, dialkanoate, ketaolkyl, ketoalkanoate, benzylamino, substituted benzylamino, benzoxy, substituted benzoxy, phenoxy, substituted phenoxy, benzycyano, and substituted benzylcyano; R1 is hydrogen or mmethyl, R2 is hydrogen or loweralkanoyl, R3 is hydrogen or hydroxy, and R4 is selected from the group consisting of loweralkyl, cycloalkyl, subtituted cycloalkyl, aryl, substituted aryl, benzyl, and substituted benzyl. The present sulfonyl derivatives of erythromycin A, B and C are useful as antibiotics.

Inventors

  • 👤 Robert Hallas
  • 👤 John Soloman Tadanier
  • 👤 Anne Mary Vonesch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 08:04
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 9 words
A 4"-O-SULFONYL ERYTHROMYCIN-9-0-OXIME DERIVATIVE OF THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim 9 words
A 4"-O-SULFONYL ERYTHROMYCIN-9-0-OXIME DERIVATIVE OF THE FOLLOWING STRUCTURAL FORMULA:
Claim 3
Dependent Claim 8 words
A 4''''-O-sulfonyl erythromycin-9-O-oxime derivative of the structural formula:
Claim 4
Dependent Claim 8 words
A 4''''-O-sulfonyl erythromycin-9-O-oxime derivative of the structural formula:
Claim 5
Dependent Claim 20 words
The derivative of claim 2 wherein R is phenylthio, R1 and R4 are methyl, and R2 and R3 are hydrogen.
Claim 6
Dependent Claim 21 words
The derivative of claim 2 wherein R is phenylthio, R1 and R4 are methyl, R2 is hydrogen, and R3 is hydroxyl.
Claim 7
Dependent Claim 21 words
The derivative of claim 2 wherein R is paraaminophenylthio, R1 and R4 are methyl, R2 is hydrogen, and R3 is hydroxyl.

References Cited (Backward Citations)

US3736313A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-03-03 1978-09-02 1979-03-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-03-03 1982-09-02 1983-03-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-03-03 1986-09-02 1987-03-04 $7700.00 Window Closed / Lapsed

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