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Chem Pharm Bull (Tokyo). 2016;64(5):517-21. doi: 10.1248/cpb.c16-00073.

New Isolinariins C, D and E, Flavonoid Glycosides from Linaria japonica.

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1
Graduate School of Biomedical & Health Sciences, Hiroshima University.

Abstract

Three new flavonoid glycosides named isolinariins C, D and E (1-3), two known flavonoid glycosides (4, 5) and three known flavonoids (6-8) were isolated from the whole plant of Linaria japonica. The structures of these compounds were determined mainly by spectroscopic analyses. The bioactivities of these isolated compounds were evaluated for their inhibitory activities against human cell line A549, collagenase, and advanced glycation end product (AGE) formation. Among the isolated compounds, isolinariins C, D and E (1, 2 and 3) showed inhibition toward AGE formation (IC50 values of 34.8, 35.0 and 19.5 µM, respectively). And linariin (4), pectolinarin (5) and luteolin (8) were found to be active against collagenase with IC50 values of 79.4, 78.6 and 40.5 µM, respectively, without significant cytotoxicity at these concentrations.

PMID:
27150486
DOI:
10.1248/cpb.c16-00073
[Indexed for MEDLINE]
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