489-33-8Relevant articles and documents
Flavonoids and a Limonoid from the Fruits of Citrus unshiu and Their Biological Activity
Eom, Hee Jeong,Lee, Dahae,Lee, Seulah,Noh, Hyung Jun,Hyun, Jae Wook,Yi, Pyoung Ho,Kang, Ki Sung,Kim, Ki Hyun
, p. 7171 - 7178 (2016/10/07)
The fruits of Citrus unshiu are one of the most popular and most enjoyed fruits in Korea. As we continue to seek for bioactive metabolites from Korean natural resources, our study on the chemical constituents of the fruits of C. unshiu resulted in the isolation of a new flavonoid glycoside, limocitrunshin 1, along with seven other flavonoids 2-8 and a limonoid 9. All structures were identified by spectroscopic methods, namely 1D and 2D NMR, including HSQC, HMBC, and 1H-1H COSY experiments, HRMS, and other chemical methods. Compounds 3, 5, and 9 are reported to be isolated from this fruit for the first time. The isolated compounds were applied to activity tests to verify their inhibitory effects on inflammation and nephrotoxicity. Compounds 6 and 9 showed the most potent inhibitory activity on renal cell damage and nitric oxide production, respectively. Thus, the fruits of C. unshiu could serve as a valuable natural source of bioactive components with health benefits for potential application in functional foods.
Studies of the selective O-alkylation and dealkylation of flavonoids. XI. A new convenient method for synthesizing 3,5,7-trihydroxy-8-methoxyflavones from 7-hydroxy-3,5,8-trimethoxyflavones
Horie,Tsukayama,Kawamura,Seno,Yamamoto
, p. 441 - 448,441-447 (2007/10/02)
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Nouveaux flavonosides de Paeonia tenuifolia L.
Stosic, Dusica,Gorunovic, Momcilo,Skaltsounis, Alexios-Leandros,Tillequin, Francois,Koch, Michel
, p. 348 - 353 (2007/10/02)
Two novel flavonoid glycosides have been isolated from the stamens of Paeonia tenuifolia , sexangularetin-3-O-yl β-D-sophoroside (1) and limocitrin-3-O-yl β-D-sophoroside (3).Their structures have been elucidated by spectroscopic means, mainly desorption chemical ionisation mass spectrometry and 1D and 2D high-resolution 1H-NMR spectroscopy of their acetyl derivatives.