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Carotenoid


DATA No : VCA0020 INFORMANT : Masayoshi Ito

NAME : 3,4,3',4'-Tetradehydro-b,b-carotene

COMMON NAME: 3,4,3',4'-Bisdehydro-b-carotene/ Bisdehydro-b-carotene/ Tetradehydro-b-carotene
SYMBOL:
FORMULA: C40H60 MOL.WT (average) : 540.904


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BIOLOGICAL ACTIVITY

PHYSICAL AND CHEMICAL PROPERTIES
MELTING POINT:190-191degC (Ref. 0087)

BOILING POINT:

REFRACTIVE INDEX:

OPTICAL ROTATION:

DENSITY:

SOLUBILITY:
SPECTRAL DATA
UV SPECTRA:lmax (nm): petrol 471 (E 1%1cm = 2400) (Ref. 0087)

IR SPECTRA:

NMR SPECTRA:

MASS SPECTRA:

OTHER SPECTRA:
CHROMATOGRAM DATA

SOURCE

CHEMICAL SYNTHESIS
The di-Grignard reagent of acetylene was reacted with 2 equivalents of the 3,4-dehydro-C19-aldehyde to give the corresponding C40-acetylenic diol, from which 3,4,3',4'-tetradehydro-b-carotene was obtained by dehydration, Lindlar hydrogenation, and isomerisation. (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.