Patent · US Expired

6-Aryl-4,5-dihydro-3(2H)-pyridazinones, and their use as anti-hypertensive and anti-thrombocyte agents

US4544562A · kind A · utility

2Cited by

3References

11Claims

0Family size

Assignee

BASF SE

Inventors

Phillip A. Rossy · Ludwigshafen, DE
Marco Thyes
Albrecht Franke
Horst Koenig
Josef Gries · Monsheim, DE
Hans D. Lehmann · Leutershausen, DE
Dieter Lenke · Ludwigshafen, DE

Key dates

Filing date	Mar 11, 1983
Grant date	Oct 1, 1985
Priority date	—
Expiry date	Mar 11, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D237/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

6-Aryl-4,5-dihydro-3(2H)-pyridazinones of the formula ##STR1## where R is hydrogen, R.sup.1 is hydrogen or C.sub.1 -C.sub.3 -alkyl, or R and R.sup.1 together are methylene, R.sup.2 and R.sup.3 are identical or different and are each hydrogen or C.sub.1 -C.sub.6 -alkyl, and A is hydroxyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.2 -C.sub.7 -acyloxy, a C.sub.2 -C.sub.7 -carbamic acid ester group, C.sub.1 -C.sub.6 -alkylsulfonyloxy, C.sub.1 -C.sub.6 -alkylmercapto, carboxyl, C.sub.2 -C.sub.7 -alkoxycarbonyl or nitrile, and their preparation are described. The substances are suitable for treating disorders.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.