Dialkoxybenzylidene-camphor derivatives

US5144081A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Ulrich Heywang · Darmstadt, DE
• Roland Martin · Hamburg, DE
• Ingeborg Stein · Langen (Hessen), DE

Key dates

• Filing date: Sep 4, 1991
• Grant date: Sep 1, 1992
• Expiry date: Sep 4, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/42
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to dialkoxybenzylidene-camphor derivatives of the formula I ##STR1## in which R.sup.1 and R.sup.2, in each case independently of one another, are a straight-chain or branched alkyl radical having 1 to 10 c atoms, and PA0 X is H or SO.sub.3 H, and to a process for their preparation and their use in cosmetic and pharmaceutical preparations.