US 3,941,841 A · Method for synthesizing rhodoxanthin

Abstract

A method by which rhodoxanthin can be synthesized from 3-ethylenedioxy-.beta.-ionone as well as new and novel intermediates produced in the synthesis. Rhodoxanthin is a well-known coloring agent for foodstuffs, including beverages, pharmaceutical and cosmetic preparations.

Claims1

Dependent claims

A compound of the formula ##SPC12##

Dependencies are inferred from the claim text.

Facts

Application

05/471,089Filed 17 May 1974 · division

Priority

23 Feb 1967

Granted

2 Mar 1976

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C07D 317/72
Having the hetero atoms in positions 1 and 3: spiro-condensed with carbocyclic rings
C07C 403/08
Having side-chains substituted by singly-bound oxygen atoms: by hydroxy groups
C07C 403/14
Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four…:…
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…:…

Family

Serial617,827Parent of this division · filed 23 Feb 1967

Serial826,022Parent of this continuation-in-part · filed 19 May 1969

Serial153,090Parent of this division · filed 14 Jun 1971

3830844Parent of this division

3624105Parent of this continuation-in-part

3466331Parent of this division

US 3,941,841 AThis patent

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

Method for synthesizing rhodoxanthin

Life of this patent

Abstract

Claims1

Method for synthesizing rhodoxanthin

Life of this patent

Abstract

Claims1