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US3657445A Expired / Lapsed US ⏱️ 0.0 years remaining

N-trityl-imidazoles for treating fungal infections

Assignee: Bayer AG
•
Filing: 1970-05-11
•
Granted: 1972-04-18
•
Expires: 1990-05-11
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Abstract

Abstract N-TRITYL-IMIDAZOLES AND SALTS THEREOF OF THE FORMULA: 1-(((X)N-PHENYL)-C(-(PHENYLENE)-(X")N")(-(PHENYLENE)- (X'')N'')-),2-R,4-R'',5-R2-IMIDAZOLE WHEREIN R, R1 AND R2 ARE HYDROGEN, LOWER ALKLY OR PHENYL, OR R1 AND R2 TOGETHER FORM AN ANELLATED BENZENE RING, X, X'' AND X" ARE ALKYL OF 1 TO 12 CARBON ATOMS OR AN ELECTRO-NEGATIVE MOIETY, AND N, N'' AND N" ARE AN INTEGER FROM 0 TO 2, OR PHARMACEUTICALLY ACCEPTABLE ACID SALTS THEREOF MAY BE PRODUCED BY REACTING A SILVER SALT OR ALKALI METAL SALT OF AN IMIDAZOLE OF THE FORMULA: 2-R,4-R1,5-R2-IMIDAZOLE WITH A TRITYL HALIDE OF THE FORMULA: (X)N,(((X'')N''-PHENYL)-C(-HAL)(-(PHENYLENE)-(X")N")-)- BENZENE WHEREIN THE SUBSTITUENTS ARE AS ABOVE DEFINED AND HAL IS HALOGEN. THESE COMPOUNDS ARE USEFUL AS ANTIMYCOTICS.

Inventors

  • 👤 Karl H Buchel
  • 👤 Erik Regel
  • 👤 Manfred Plempel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 12:47
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/02; C07D249/08; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/00; C07D233/54; C07D233/56; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C07D235/08; C07D235/18

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) 1975-04-18 1975-10-18 1976-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-18 1979-10-18 1980-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-18 1983-10-18 1984-04-18 $7700.00 Window Closed / Lapsed

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