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Carotenoid


DATA No : VCA0019 INFORMANT : Masayoshi Ito

NAME : 3,4-Didehydro-b,b-carotene

COMMON NAME: 3,4-Didehydro-b-carotene
SYMBOL:
FORMULA: C40H58 MOL.WT (average) : 538.889


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BIOLOGICAL ACTIVITY

PHYSICAL AND CHEMICAL PROPERTIES
MELTING POINT:186degC (Ref. 0087)

BOILING POINT:

REFRACTIVE INDEX:

OPTICAL ROTATION:

DENSITY:

SOLUBILITY:
SPECTRAL DATA
UV SPECTRA:lmax (nm): petrol 461 (E 1%1cm = 2330) (Ref. 0087)

IR SPECTRA:

NMR SPECTRA:

MASS SPECTRA:

OTHER SPECTRA:
CHROMATOGRAM DATA

SOURCE

CHEMICAL SYNTHESIS
10-(2,6,6-Trimethylcyclohexen-1-yl)-4,8-dimethyl-4,6,8-decatrien-2-yn-3-ol was treated with ethyl magnesium bromide, and then reacted with the C19-dialdehyde to give the corresponding C40-acetylenic diol. Subsequent dehydration, Lindlar hydrogenation and isomerisation gave 3,4-detrahydro-b-carotene. (Ref. 0087)
METABOLISM

GENETIC INFORMATION

NOTE

REFERENCES
[0087]
AUTHOR:Isler,O.,Lindlar,H.,Montavon,M.,Rüegg,R., and Zeller,P.
TITLE:Synthesen in der Carotinoid-Reihe. Die Synthese von 3,4; 3',4'-Bisdehydro-b-carotin und 3,4-Monodehydro-b-carotin
JOURNAL:Helv. Chim. Acta
VOL:39 PAGE : 274 -282 (1956)
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Last updated June 19, 2007. Copyright © 1989-2007 Japanese Conference on the Biochemistry of Lipids (JCBL). All rights reserved.