6-heteroarylphenanthridines

US6884802B2 · kind B2 · utility

Assignee

• ALTANA PHARMA AG · DE

Inventor

• Beate Schmidt · Allensbach, DE

Key dates

• Filing date: Jul 7, 2001
• Grant date: Apr 26, 2005
• Expiry date: Jul 7, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D417/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Compounds of formula 1, in which Het is an unsubstituted or R6- and/or R7-substituted pyrrolyl, furanyl, thiophenyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, thiadiazolyl, pyrimidinyl, pyrazinyl or pyradazinyl radical, or an unsubstituted or R6- and/or R7-substituted fused bi- or tricyclic ring system comprising at least one aromatic ring and up to 4 heteroatoms-selected from the group consisting of O (oxygen), S (sulfur), N (nitrogen)- which is bonded to the phenanthridinyl radical via one of the rings comprising one or more heteroatoms, are active PDE4 inhibitors.