Fragrance precursor compounds

US6262287A · kind A · utility

Assignee

• Givaudan Roure (International) S.A. · CH

Inventors

• Denise Anderson · Brooklyn, US
• Georg Frater · Winterthur, CH

Key dates

• Filing date: May 12, 1998
• Grant date: Jul 17, 2001
• Expiry date: May 12, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/57
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Organosiloxane fragrance precursor compounds having at least one organosiloxane unit of the formula ##STR1## or a mixture thereof and if any other siloxane unit(s) in the said organosiloxanes being present this/these is/are of formula ##STR2## PA1 wherein R represents a substituted or unsubstituted C.sub.1-8 alkyl group or a substituted or unsubstituted aryl group; PA1 R" represents a hydrogen atom, a monovalent C.sub.1-8 hydrocarbon group or a monovalent C.sub.1-8 halogenated hydrocarbon group; PA1 R.sup.1 represents a hydrogen atom or a substituted or unsubstituted C.sub.1-8 alkyl group or a substituted or unsubstituted aryl group or a bond connecting CR.sup.1 and CR.sup.3 ; PA1 R.sup.3 represents a hydrogen atom or a substituted or unsubstituted C.sub.1-8 alkyl group or a substituted or unsubstituted aryl group; PA1 {character pullout} represents (CR.sup.4.sub.2).sub.n whereby R.sup.4 represents a substituted or unsubstituted C.sub.1-8 alkyl group or a substituted or unsubstituted aryl group or a hydrogen atom and whereby n is from 0-20 and each R.sup.4 is the same or different; PA1 OR.sup.2 represents the residue of an olfactive alcohol or of the enol form of an olfactive aldeh…