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US3708489A Expired / Lapsed US ⏱️ 0.0 years remaining

Azido-aryl 1,4-dihydropyridines and their production

Assignee: Bayer AG
•
Filing: 1971-03-17
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Granted: 1973-01-02
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Expires: 1991-03-17
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Abstract

Abstract AZIDO-ARYL 1,4-DIHYDROPYRIDINES OF THE FORMULA: 1-R,2,6-DI(R''),3,5-DI(R"-OOC-),4-R"''-1,4-DIHYDROPYRIDINE WHEREIN R IS HYDROGEN, STRAIGHT, BRANCHED OR CYCLIC LOWER ALKYL LOWER ALKENYL OR LOWER ALKINYL, UNSUBSTITUTED OR SUBSTITUTED BY HYDROXYL OR ALKOXY OF 1 TO 3 CARBON ATOMS; OR BENZYL, OR PHENETHYL, UNSUBSTITUTED OR SUBSTITUTED IN THE ARYL PORTION BY 1 TO 3 MEMBERS SELECTED FROM THE GROUP CONSISTING OF 1 TO 3 ALKOXY MOIETIES OF 1 TO 3 CARBON ATOMS, 1 OR 2 ALKYL MOIETIES OF 1 TO 3 CARBON ATOMS, AND 1 OR 2 HALOGEN ATOMS; R'' IS STRAIGHT OR BRANCHED CHAIN ALKYL OF 1 TO 4 CARBON ATOMS; R" IS STRAIGHT, BRANCHED OR CYCLIC LOWER ALKYL, LOWER ALKENYL OR LOWER ALKI*YL, STRAIGHT BRANCHED OR CYCLIC LOWER ALKYL, LOWER ALKENYL OR LOWER ALKINYL, THE CARBON ATOM CHAIN OR RING OF WHICH IS INTERRUPTED BY 1 OR 2 OXYGEN ATOMS OR STRAIGHT, BRANCHED OR CYCLIC LOWER ALKYL, LOWER ALKENYL OR LOWER ALKINYL SUBSTITUTED BY HYDROXYL OR SUBSTITUTED BY HYDROXYL AND THE CARBON ATOM CHAIN OR RING OF WHICH IS INTERRUPTED BY 1 OR 2 OXYGEN ATOMS; AND R"'' IS ARYL SUBSTITUTED BY AN AZIDO MOIETY AND FURTHER UNSUBSTITUTED OR SUBSTITUTED BY 1 OR 2 MEMBERS SELECTED FROM THE GROUP CONSISTING OF 1 OR 2 ALKYL MOIETIES OF 1 TO 4 CARBON ATOMS, 1 OR 2 FLUOROALKYL MOIETIES OF 1 TO 4 CARBON ATOMS, 1 OR 2 ALKOXY MOIETIES OF 1 TO 4 CARBON ATOMS AND 1 OR 2 HALOGEN ATOMS, ARE USEFUL FOR THE CORONARY DILATING EFFECT, THEIR NITRITELIKE EFFECT ON THE HEART THEIR ANTI-FIBRILLATION EFFECT, THEIR VASCULAR-SPASMOLYTIC EFFECT AND MUSCULAR-SPASMOLYTIC EFFECT AND AS ANTI-HYPTENSIVES.

Inventors

  • 👤 D Rucker
  • 👤 F Bossert
  • 👤 H Meyer
  • 👤 W Vater

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 01:45
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/90

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) 1976-01-02 1976-07-03 1977-01-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-01-02 1980-07-03 1981-01-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-01-02 1984-07-03 1985-01-02 $7700.00 Window Closed / Lapsed

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