Substituted 6-alkylphenanthridines

US6214839A · kind A · utility

Assignee

• Byk Gulden Lomberg Chemische Fabrik GmbH · DE

Inventor

• Beate Gutterer · Allensbach, DE

Key dates

• Filing date: Jan 24, 2000
• Grant date: Apr 10, 2001
• Expiry date: Jan 24, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D221/12
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Compounds of formula I ##STR1## pharmaceutically acceptable salts thereof and compositions of either are useful for treating conditions amenable to treatment with a phosphodiesterase inhibitor type 4.