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US3553209A Expired / Lapsed US ⏱️ 0.0 years remaining

3-methyl-8-(2-thinenyl)pyrazolo(4,3-e)(1,4) diazepin-5(1h)-one compounds

Assignee: Parke Davis and Co LLC
•
Filing: 1968-12-16
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Granted: 1971-01-05
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Expires: 1988-12-16
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Abstract

Abstract 3 - METHYL-8-(2-THIENYL)PYRAZOLO(4,3-E)(1,4)DIAZEPIN5(4H)-ONE COMPOUNDS, 7-OXIDE DERIVATIVES THEREOF, AND THEIR SALTS, SUBSTITUTED IN THE 1-POSITION BY METHYL OR ETHYL AND OPTIONALLY IN THE 4-POSITION BY METHYL; AND THEIR PRODUCTION BY (A) REACTING A 4-AMINO-3-METHYL-5(2-THENOYL)PYRAZOLE WITH A LOWER ALKYL ESTER OF GLYCINE OR A SALT THEREOF, (B) REACTING A 4-(2-HALOACETAMIDO)-3METHYL-5-(2-THENOYL)PYRAZOLE OR A SALT THEREOF WITH AMMONIA, (C) REACTING A 4-(2-AMINOACETAMIDO)-3-METHYL5-(2-THENOYL)PYRAZOLE SALT WITH A BASE, (D) REACTING A 4-(2-(HYDROXYLAMINO)ACETAMIDO) - 3 - METHYL-5-(2-THENOYL)PYRAZOLE WITH A STRONG ACID, (E) REACTING ONE OF THE 3-METHYL - 8 - (2-THIENYL)PYRAZOLO(4,3-E)(1,4)DIAZEPIN-5 (1H)-ONE COMPOUNDS WITH AN OXIDIZING AGENT, AND (F) REACTING ONE OF THE 4-UNSUBSTITUTED 3-METHYL-8-(2-THIENYL)PYRAZOLO(4,3-E)(1,4)DIAZEPIN-5(1H) ONES OR THE 7-OXIDE DERIVATIVES THEREOF WITH A METHYLATING AGENT IN THE PRESENCE OF A BASE. THE COMPOUNDS OF THE INVENTION ARE USEFUL AS ANTICONVULSANT AND ANTI-ANXIETY AGENTS.

Inventors

  • 👤 Yvon J L Italien
  • 👤 Ivan C Nordin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 14:07
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/38; C07D231/16; C07D487/00; C07D487/02; C07D487/04

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) 1974-01-04 1974-07-06 1975-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-04 1978-07-06 1979-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-04 1982-07-06 1983-01-05 $7700.00 Window Closed / Lapsed

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