US 4,098,827 AGranted

1-(2,6,6 -Trimethyl-3-hydroxy-1-cyclohexen-1-yl)-3-methyl-penta-1,4-diene[or 1-yn-4-EN]-3-ols

AssigneeHoffmann-La Roche Inc.

InventorMichael Rosenberger

Life of this patent

Estimating the term…

A total synthesis of canthaxanthin, a known food coloring agent from alpha or retro ionone.

Dependent claims

A compound of the formula ##STR11## where the dotted bond is optionally hydrogenated.

Dependencies are inferred from the claim text.

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 403/04
Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four…:…
C07C 403/08
Having side-chains substituted by singly-bound oxygen atoms: by hydroxy groups
C07D 303/32
With hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms: by aldehydo- or ketonic radicals

No related US applications are recorded in the indexed filing history.

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