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US3658788A Expired / Lapsed US ⏱️ 0.0 years remaining

Aminooxazolines and products thereof and processes for synthesizing same

Assignee: Salk Institute for Biological Studies
•
Filing: 1969-06-06
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Granted: 1972-04-25
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Expires: 1989-06-06
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Abstract

Abstract AMINOOXAZOLINES HAVING USES IN ORGANIC CHEMISTRY, BIOCHEMICAL RESEARCH, AND BIOCHEMISTRY AND THE METHOD FOR MAKING SAME COMPRISING REACTING A REDUCING SUGAR HAVING AN HYDROXYL GROUP AND A CARBON ATOM ADJACENT THE CARBONYL OR HEMIACETAL CARBON ATOM OF THE SUGAR WITH CYANAMIDE OR CYANOGEN PLUS AMMONIA IN SOLUTION TO THEREBY FORM A AMINOOXAZOLINE IN WHICH THE CARBONYL OR HEMIACETAL CARBON AND THE AFORESAID ADJACENT CARBON OF THE SUGAR FORM PART OF THE OXAZOLINE RING. A METHOD FOR PRODUCING GLYCOSIDES, E.G., NUCLEOSIDES AND NUCLEOTIDES OF THE REDUCING SUGARS, INCLUDING THEIR CYCLO-DERIVATIVES, WHICH HAVE BIOCHEMICAL AND PHARMACEUTICAL USES, COMPRISING REACTING THE AFOREMENTIONED AMINOOXAZOLINES WITH (A) A FIRST GROUP OF ELECTROPHILIC REAGENTS SUCH AS CYANOACETYLENE, METHYL PROPIOLATE, DIALKYL ACETYLENEDICARBOXYLATES, HALOACYLONITRILES OR (B) WITH A SECOND GROUP OF ELECTROPHILIC REAGENTS, COMPRISING B-DIKETONES AND B-KETOESTERS.

Inventors

  • 👤 Leslie E Orgel
  • 👤 Robert A Sanchez

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 07:50
CPC Classifications
C; C07; C07D; C07D498/00; C07D498/12; C07D498/14; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/06; C07H19/10; C07H9/00; C07H9/06

Claims Analysis

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-04-25 1975-10-25 1976-04-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-25 1979-10-25 1980-04-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-25 1983-10-25 1984-04-25 $7700.00 Window Closed / Lapsed

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