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US3654262A Expired / Lapsed US ⏱️ 0.0 years remaining

3-deoxy-3-c-lower alkyl glycosides and nucleosides

Assignee: Merck and Co Inc
•
Filing: 1969-08-21
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Granted: 1972-04-04
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Expires: 1989-08-21
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Abstract

Abstract NOVEL 3 - DEOXY - 3 - C-LOWER-ALKYL-B-D-XYLOFURANOSYL HALIDE INTERMEDIATES ARE PREPARED BY THE STEPS OF (A) FORMING THE 5-O-TRITYL DERIVATIVE OF AN ALKYL 2,3-ANHYDROB-D-RIBOFURANOSIDE, (B) REACTING WITH A LOWER ALKYL GRIGNARD REAGENT TO OBTAIN THE ALKYL 3-DEOXY-3-C-LOWER ALKYL - 5 - O-TRITYL-B-D-XYLOFURANOSIDE, (C) REMOVAL OF 5 - 0 - TRITYL GROUP, (D) ACYLATING TO THE ALKYL 2,5-DI0 - ACYL - 3 - DEOXY-3-C-LOWER-ALKYL-B-D-XYLOFURANOSIDE, AND (E) CONVERTING THE LATTER COMPOUND TO THE 2,5-DI-OACYL-3-DEOXY-3-LOWER-ALKYL-D-XYLOFURANOSYL HALIDE BY A HALOGEN REPLACEMENT REACTION. STEPS C AND D MAY BE REVERSED. THE NOVEL INTERMEDIATE IS THEN CONVERTED INTO NOVEL PURINE AND PYRIMIDINE NUCLEOSIDES. THE NOVEL COMPOUNDS OF THIS INVENTION HAVE UTILITY IN VITRO IN INHIBITING CELL GROWTH. THEY ARE ALSO USEFUL AS SCREENING AGENTS FOR ULTRAVIOLET LIGHT.

Inventors

  • 👤 Edward Walton

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 16:20
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H13/08; C07H19/00; C07H19/02; C07H19/04; C07H19/06; C07H19/16

Claims Analysis

Total Claims: 0
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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) 1975-04-04 1975-10-04 1976-04-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-04 1979-10-04 1980-04-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-04 1983-10-04 1984-04-04 $7700.00 Window Closed / Lapsed

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