Carotinoid‐Glykoside 2. Mitteilung Untersuchungen zur Carotinoid‐Zusammensetzung im Safran

Abstract

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Synthese von Diterpenen als mögliche biogenetische Vorläufer des C20‐Carotinoides Crocetin

“…Die Kenntnis ihrer physikalischen Daten sollte das Suchen nach ihrem natiirlichen Vorkommen wesentlich erleichtern. Die Verbindungen 6 und 7 wurden bereits fruher beschrieben 2 ,6 ,I I ,6,IO,6 ) . Die Synthese' von 6 erfolgte nach [8], wobei fur die Substitution der OH-Gruppe des Geraniols (10) CBr,/ Ph,P verwendet wurde [16].…”

Chemistry and Biod iversity of the Biologically Active Natural Glycosides

“…An acylated flavonoid glycoside, complanatin (158), has been isolated from the seeds of plant Astragalus complanatus [127]. A. complanatus (Leguminosae) has been usually used as a tonic in the traditional Chinese medicine.…”

Glucosylation of the saffron apocarotenoid crocetin by a glucosyltransferase isolated from Crocus sativus stigmas

“…Interest in the impact of saffron carotenoids on human health is growing due to their high antioxidant capacity (Verma and Bordia 1998), and recent studies show that saffron may offer some protection against major diseases such as coronary heart diseases and cancer (Abdullaev 2002). Saffron has three main types of chemical component, including a bitter compound picrocrocin, spicy volatile compounds such as safranal, and the bright yellow coloured carotenoids that consist of crocetin-di-(b-Dglucosyl)-ester, crocetin-(b-D-gentiobiosyl)-(b-D-glucosyl)-ester and crocetin-di-(b-D-gentiobiosyl)-ester (crocin) (Pfander and Wittwer 1975;Tarantilis and Polissiou 1997;Alonso et al 1998). The ability to synthesize these compounds is not common across the plant genera.…”