Synthesen in der Carotinoid‐Reihe. 8. Mitteilung. Totalsynthese von Kryptoxanthin und eine weitere Synthese von Zeaxanthin

Synthesen in der Carotinoid‐Reihe. 8. Mitteilung. Totalsynthese von Kryptoxanthin und eine weitere Synthese von Zeaxanthin

Cryptoxanthin has been synthesized from acetoxy‐β‐C19‐aldehyde and β‐C21‐acetylenic carbinol following the scheme C19 + C21 = C40. The C19‐aldehyde was obtained from keto‐iso‐C14‐aldehyde via the acetoxy‐β‐C14‐ and ‐C14‐aldehydes. The optically inactive synthetic cryptoxanthin has the same melting p...

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Veröffentlicht in:Helvetica chimica acta 1957, Vol.40 (2), p.456-467
Hauptverfasser: Isler, O., Lindlar, H., Montavon, M., Rüegg, R., Saucy, G., Zeller, P.
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container_issue 2
container_start_page 456
container_title Helvetica chimica acta
container_volume 40
creator Isler, O.
Lindlar, H.
Montavon, M.
Rüegg, R.
Saucy, G.
Zeller, P.
description Cryptoxanthin has been synthesized from acetoxy‐β‐C19‐aldehyde and β‐C21‐acetylenic carbinol following the scheme C19 + C21 = C40. The C19‐aldehyde was obtained from keto‐iso‐C14‐aldehyde via the acetoxy‐β‐C14‐ and ‐C14‐aldehydes. The optically inactive synthetic cryptoxanthin has the same melting point as the natural product, and the absorption spectra of the solutions are identical. Starting with the acetoxy‐β‐C19‐aldehyde, an improved synthesis of zeaxanthin was developped, following the scheme C19 + C2 + C19.
doi_str_mv 10.1002/hlca.19570400225
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title Synthesen in der Carotinoid‐Reihe. 8. Mitteilung. Totalsynthese von Kryptoxanthin und eine weitere Synthese von Zeaxanthin
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