Patent US3456862A successfully refreshed from Google Patents.
Patent US3850932A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3850932A Expired / Lapsed US ⏱️ 0.0 years remaining

5-(2-carboxy and 2-carboalkoxy-phenylamino)-1,2,4-triazolo-quinazolines

Assignee: Sandoz AG
•
Filing: 1973-06-28
•
Granted: 1974-11-26
•
Expires: 1993-06-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract 1. A COMPOUND OF THE FORMULA: 2-((2-(R-OOC-),R-PHENYL)-NH-),3,4-(-Q=R(A)-N=),((R1)N-)- 3,4-DIHYDROQUINAZOLINE WHEREIN Q AND RA ARE DIFFERENT AND EITHER A NITROGEN ATOM OR A =CR''- FUNCTION; R IS HYDROGEN, ALKYL OF 1 TO 4 CARBON ATOMS OR A PHARMACEUTICALLY ACCEPTABLE CATION; R0 IS HYDROGEN, ALKYL OF 1 TO 4 CARBON ATOMS, HALO OF ATOMIC WEIGHT OF FROM 18 TO 36, ALKOXY OF 1 TO 4 CARBON ATOMS OR TRIFLUOROMETHYL; R'' REPRESENTS HYDROGEN OR ALKYL OF 1 TO 4 CARBON ATOMS; R1 REPRESENTS HALO OF ATOMIC WEIGHT OF FROM 18 TO 80, ALKYL OF 1 TO 3 CARBON ATOMS, ALKOXY OF 1 TO 3 CARBON ATOMS, TRIFLUOROMETHYL OR, WHEN N IS 2, THE TWO R1 TOGETHER FORM METHYLENEDIOXY; AND N IS 0, 1 OR 2, AND WHEN 2, THEN R1 MAY BE THE SAME OR DIFFERENT; PROVIDED THAT N IS 1 WHEN R1 IS TRIFLUOROMETHYL.

Inventors

  • 👤 F Kathawala

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 23:34
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim 5 words
A COMPOUND OF THE FORMULA:

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-25 1978-05-27 1978-11-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-25 1982-05-27 1982-11-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-25 1986-05-27 1986-11-26 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag