Tricyclic quinoxaline and quinoline derivatives as a UV filter

US7101537B2 · kind B2 · utility

Assignee

• Merck Patentgesellschaft · DE

Inventors

• Frank Pfluecker · Darmstadt, DE
• Michael Schwarz · Pocking, DE
• Volker Scholz · Darmstadt, DE
• Hans Neunhoeffer · Mühltal, DE

Key dates

• Filing date: Feb 11, 2002
• Grant date: Sep 5, 2006
• Expiry date: Jun 12, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/52
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to the use of quinoxaline derivatives of formula I, represented by formulas 1a and 1b, as photostable UV filters, in particular in cosmetic and pharmaceutical preparations for protecting the human epidermis or human hair against UV radiation, above all in the 280–400 nm range.