Über Inhaltstoffe der Iris germanica (Schwertlilie)

Abstract

Acetovanillon and the known flavonoids irisolidone, irigenin, irisolone, tectorigenin and dihydroquercetin-7.3′-dimethylether were detected in the rhizomes of Iris germanica. Also a few unknown compounds could be isolated and their structure elucidated; 9-methoxy-7-(3′.4′.5′-trimethoxyphenyl)-8H-1.3-dioxolo[4.5-g] [1]-benzopyran-8-on (=5.3′.4′.5′-tetramethoxy-6.7-methylenedioxyisoflavone (III A); 9-methoxy-7-(3′.4′-dimethoxyphenyl)-8H-1.3-dioxolo[4.5-g] [1]-benzopyran-8-on (=5.3′.4′-trimethoxy-6.7-methylenedioxyisoflavone(III B); 9-hydroxy-7-(p-hydroxyphenyl)-8H-1.3-dioxolo[4.5-g] [1]-benzopyran-8-on (=5.4′-dihydroxy-6.7-methylenedioxyiosoflavone (IX); 5.7-dihydroxy-3-(3′-hydroxy-4′-methoxyphenyl)-6-methoxy-4H-1-benzopyran-4-on (=5.7.3′-trihydroxy-6.4′-dimethoxyisoflavone (XI B); 5.7-dihydroxy-3-(4′-hydroxy-3′-methoxyphenyl)-6-methoxy-4H-1-benzopyran-4-on (=5.7.4′-trihydroxy-6.3′-dimethoxyisoflavone (XI C).

The structure determination was effected by combined spectroscopical and chemical methods.