Showing papers on "Flavanone published in 1977"
TL;DR: A reexamination of Inula viscosa yields besides already known compounds two sesquiterpene lactones (10 and 11) the structures have been elucidated by intensive 1H n.m. spectroscopic studies as mentioned in this paper.
Abstract: Die erneute Untersuchung von Inula viscosa ergibt neben bereits bekannten Verbindungen zwei Sesquiterpenlactone (10 und 11). Die Konstitutionen werden durch intensive 1H-NMR-spektroskopische Untersuchungen geklart. Weiterhin isoliert man ein neues Flavanon (12).
Naturally Occurring Terpene Derivatives, 83. New Constituents of Inula viscosa Ait.
A reexamination of Inula viscosa yields besides already known compounds two sesquiterpene lactones (10 and 11). The structures have been elucidated by intensive 1H n.m.r. spectroscopic studies. Furthermore a new flavanone (12) is isolated.
36 citations
26 citations
TL;DR: A chalcone cyclase (CC) was isolated from immature grapefruit in this paper, and the enzyme required neohesperidose at C-4′ of the A-ring and a free, unhindered hydroxyl group at c-4 of the B-ring for activity.
20 citations
TL;DR: In this article, an attempt to localize the individual enzymes within isolated chloroplasts showed that these organelles: contain hydroxycinnamoyl-CoA, quinate-hydroxycinnamide transferase and flovanone-synthetase involved in the biosynthesis of chlorogenic acid and naringenin; catalyze the isomerisation of chalcone to flavanone; are not able to activate the C6-C3 units to their CoA esters.
19 citations
TL;DR: This paper showed that the C-glycosylation occurs at the stage of chalcone or flavanone in Pueraria lobata, and further competitive feeding experiments with T-or 14C-labeled isoliquiritigenin and liquiritigenIN suggest that C glycosylchalcone would be a possible intermediate for the biosynthesis of puerarin.
Abstract: ^ C-Labelled isoliquiritigenin was efficiently incorporated into puerarin of Pueraria lobata but 14C-labelled daidzein was almost not into it. These results support that the C-glycosylation occurs at the stage of chalcone or flavanone. Further competitive feeding experiments with T-or 14C-labelled isoliquiritigenin and liquiritigenin suggest that Cglycosylchalcone would be a possible intermediate for the biosynthesis of puerarin.
13 citations
TL;DR: The complete structure and stereochemical elucidation of flavanone 5,3′,4′-trihydroxy-7β-glucoside has been achieved by the aid of 13C n.m.
Abstract: The complete structure and stereochemical elucidation of flavanone 5,3′,4′-trihydroxy-7β-glucoside has been achieved by the aid of 13C n.m.r.
5 citations
TL;DR: A new flavanone glycoside 5-hydroxy-6,7,3,4,5′-pentamethoxyflavanone 5- O -α- l -rhamnopyranoside along with quercetagetin 3,6-dimethyl ether and an anthraquinone glycoide have been isolated from the stem bark of Cassia renigera as discussed by the authors.
5 citations
3 citations
Journal Article•
1 citations
TL;DR: In this paper, the authors present a Gemisch der Flavanone (II) (keine Ausbeuteangabe bzw. in g) and der Azine (III) with aktivem Mangandioxid.
Abstract: Oxidation der Titelverbindungen (I) mit aktivem Mangandioxid gibt ein Gemisch der Flavanone (II) (keine Ausbeuteangabe bzw. in g) und der Azine (III).
1 citations