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US3634455A Expired / Lapsed US ⏱️ 0.0 years remaining

2 3-disubstituted 3h-indol-3-ols and a process of production therefor

Assignee: Pharmacia and Upjohn Co
•
Filing: 1969-05-28
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Granted: 1972-01-11
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Expires: 1989-05-28
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Abstract

Abstract 2,3-DISUBSTITUTED 3H-INDOL-3-OLS OF THE FORMULA 2-R1,3-R2,3-(R3-O-),X-3H-INDOLE WHEREIN X IS HYDROGEN, ALKYL OF 1 TO 3 CARBON ATOMS, INCLUSIVE, HALOGEN OF -CF3; WHEREIN R1 AND R2 ARE PHENYL OF THE FORMULA -C6H4Z WHEREIN Z IS HYDROGEN, ALKYL DEFINED AS ABOVE, ALKOXY OF 1 TO 3 CARBON ATOMS INCLUSIVE, HALOGEN OR CF3, OR ONE OF THE PARAMETERS R1 AND R2 IS ALKYL DEFINED AS ABOVE; AND WHEREIN R3 IS HYDROGEN, -CO-R4 IN WHICH R4 IS ALKYL DEFINED AS ABOVE, BENZYL OR -CH(-R5)-COO-R6 IN WHICH R5 IS HYDROGEN OR METHYL AND R6 IS HYDROGEN OR ALKYL OF 1 TO 4 CARBON ATOMS, INCLUSIVE, ARE PRODUCED FROM O-AMINOPHENONES. THE 2,3-DISUBSITUTED 3H-INDOL-3OLS AND THE 0-ACIDS, ESTERS AND ETHERS THEREOF ARE SEDATIVES AND TRANQUILIZERS WHICH CAN BE USED FORM MAMMALS AND BIRDS.

Inventors

  • 👤 Daniel Lednicer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 20:55
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/04; C07D265/12; C07D265/14; C07D265/16; C07D209/00; C07D209/02; C07D209/04; C07D209/30; C07D209/32; C07D209/36; C07D265/20; C07D265/22

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) 1975-01-10 1975-07-12 1976-01-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-10 1979-07-12 1980-01-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-10 1983-07-12 1984-01-11 $7700.00 Window Closed / Lapsed

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