USRE30260EExpiredUtility

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

7
Priority: Jan 17, 1977Filed: Mar 2, 1979Granted: Apr 22, 1980
Est. expiryJan 17, 1997(expired)· nominal 20-yr term from priority
C07C 403/08C07C 403/02C07C 403/24C07F 9/5407C07D 303/32C07C 2601/16
7
PatentIndex Score
0
Cited by
6
References
3
Claims

Abstract

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

Claims

exact text as granted — not AI-modified
I claim: .[. 
     
       1.  A compound of the formula: ##STR11## where the dotted bond is hydrogenated..]. .[. 
     
     
       2.  The compound of claim 1 wherein said compound is 1-(2,6,6-trimethyl-3-hydroxy-1-cyclohexen-1-yl)-3-methyl-penta-1,4-diene-3-ol..]. .Iadd. 
     
     
       3.  A compound of the formula: ##STR12## .Iaddend.

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