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Heterocyclen im Stoffwechsel VIII. Synthese von Lumiflavin‐4a‐14C und Riboflavin‐4a‐14C
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AbstractEs werden zwei Mikroverfahren zur Darstellung von Barbitursäure‐5‐14C beschrieben. Ausgehend von Natriumcyanoacetat‐2‐14C über Malonsäure‐2‐14C beträgt die Gesamtausbeute an Barbitursäure‐5‐14C 86%, ausgehend von Malonsäurediäthylester‐2‐14C 70%. — Die Synthese ringmarkierter Flavine aus Barbitursäure‐5‐14C gelingt beim Lumiflavin‐4a‐14C mit 88% Gesamtausbeute an analysenreinem Produkt, beim Riboflavin‐4a‐14C mit 75%. Die spezifische Aktivität des Endproduktes entspricht der des Ausgangsproduktes.
Title: Heterocyclen im Stoffwechsel VIII. Synthese von Lumiflavin‐4a‐14C und Riboflavin‐4a‐14C
Description:
AbstractEs werden zwei Mikroverfahren zur Darstellung von Barbitursäure‐5‐14C beschrieben.
Ausgehend von Natriumcyanoacetat‐2‐14C über Malonsäure‐2‐14C beträgt die Gesamtausbeute an Barbitursäure‐5‐14C 86%, ausgehend von Malonsäurediäthylester‐2‐14C 70%.
— Die Synthese ringmarkierter Flavine aus Barbitursäure‐5‐14C gelingt beim Lumiflavin‐4a‐14C mit 88% Gesamtausbeute an analysenreinem Produkt, beim Riboflavin‐4a‐14C mit 75%.
Die spezifische Aktivität des Endproduktes entspricht der des Ausgangsproduktes.
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