- Chemical constituents from the root bark of Rodgersia sambucifolia
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A new demethylacetovanillochromene glycoside, 2,2-dimethyl-2H-(8-hydroxy-6- acetyl)-[2,3-b] pyran-8-O-β-D-apiofuranosyl-(1→6)-β-D- glucopyranoside (1), together with twenty-three known compounds, have been isolated from the root bark of Rodgersia sambucifolia. These known compounds include two diterpenoids, three flavonoids, two catechins, four lignans, two benzenoids, two isocoumarins, two steroids and six monoterpene glycosides, which were determined by means of spectral analyses.
- Hu, Hao-Bin,Jian, Yu-Feng,Cao, Hong,Zheng, Xu-Dong
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- 6-acetyl-8-hydroxy-2,2-dimethylchromene, an antioxidant in sunflower seeds; Its isolation and synthesis and antioxidant activity of its derivatives
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By the guide of assay toward inhibition of photooxidation of β-carotene, 6-acetyl-8-hydroxy-2,2-dimethylchromene (1) was isolated from sunflower seeds. In addition to 1, the analogous compounds possessing the chromene (chromane) skeleton were synthesized and their antioxidant activities were examined.
- Tsuda, Hideyuki,Ishitani, Youichi,Takemura, Yoshiyuki,Suzuki, Yoshiaki,Kato, Tadahiro
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p. 139 - 142
(2007/10/03)
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