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US3856807A Expired / Lapsed US ⏱️ 0.0 years remaining

L-({60 s,5s)-{60 -amino-3-chloro-2-isoxazoline-5-acetic acid

Assignee: Pharmacia and Upjohn Co
•
Filing: 1973-02-02
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Granted: 1974-12-24
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Expires: 1993-02-02
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Abstract

Abstract Antibiotic AT-125, producible by culturing Streptomyces sviceus in an aqueous nutrient medium has the following structure: The absolute configuration of AT-125 was determined to be L-( Alpha S,5S)- Alpha -amino-3-chloro-2-isoxazoline-5-acetic acid. It is an amphoteric compound and can exist in different ionic forms according to the pH of the environment. At low pH, AT-125 exists in the acid-addition salt form, at a higher pH in a zwitterion form, and at a still higher pH in a metal salt form. AT-125 inhibits the growth of Bacillus subtilis, Saccharomyces pastorianus, Penicillium oxalicum, Candida albicans, Saccharomyces cerevisiae and Escherichia coli, and can be used to inhibit such microorganisms in various environments.

Inventors

  • 👤 L Hanka
  • 👤 D Martin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 08:39
CPC Classifications
C; C07; C07D; C07D261/00; C07D261/02; C07D261/04; A; A61; A61P; A61P31/00; A61P31/04; C07G; C07G11/00

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim 5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim 11 words
Acid addition salts of antibiotic AT-125, the compound of claim 1.
Claim 4
Dependent Claim 10 words
Cationic salts of antibiotic AT-125, the compound of claim 1.
Claim 5
Dependent Claim 9 words
Zwitterion form of antibiotic AT-125, the compound of claim
Claim 6
Dependent Claim 9 words
Crystalline antibiotic AT-125, the compound of the claim 1.

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) 1977-12-23 1978-06-24 1978-12-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-23 1982-06-24 1982-12-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-23 1986-06-24 1986-12-24 $7700.00 Window Closed / Lapsed

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