US 6,747,177 B2Granted

Process for the preparation of meso-zeaxanthin

AssigneeBASF SE

InventorsHansgeorg Ernst, Klaus Henrich, Klaus Ditrich

Life of this patent

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Abstract

A process for the preparation of optically pure acetylenediols of the formulae R-I and S-I and their further reaction to give meso-zeaxanthin are described.

Claims1

Dependent claims

An optical active acetylenediol of the formula S-I

Dependencies are inferred from the claim text.

Facts

Application: 10/619,423Filed 16 Jul 2003 · division
Priority: DE 101 45 22313 Sep 2001
Published: US 2004/0024264 A15 Feb 2004
Granted: 8 Jun 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

C07C 403/24
Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four…:…
C07C 29/74
Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring: separation;…
C07C 35/18
Containing a six-membered rings: with unsaturation at least in the ring
C07C 69/65
Halogen-containing esters: of unsaturated acids

Family

Application10/237,807Parent of this division · filed 10 Sep 2002
US 2004/0024264 A1Pre-grant publication · published 5 Feb 2004
US 2003/0092775 A1Published application
US 6,743,954 B2Related patent
US 6,747,177 B2This patent

From the US filing history. Foreign family members aren’t listed.

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