| Autor: |
Li, Yijv, Zhao, Nengwu, Ye, Jianghai, Xu, Fangfang, Luo, Shuntong, Lang, Tianqiong |
| Předmět: |
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| Zdroj: |
Zeitschrift für Kristallographie / New Crystal Structures; Oct2022, Vol. 237 Issue 5, p877-879, 3p |
| Abstrakt: |
Detailed analysis of its crystal structure revealed that the methoxyl groups located at C-3 and C-6 are turned out from the plane of chromone skeleton, which is in accordance with that of casticin, the methyl etherified derivative at 4'-OH of the title compound [[11], [13]]. The title compound (131.8 mg) was obtained from the E4 fraction I via i repeated silica gel column chromatography. The ethyl acetate fraction (0.219 kg) was then separated over silica gel column chromatography eluted with petroleum ether/ethyl acetate and dichloromethane/methanol in gradient, affording six fractions of E1-E6. [Extracted from the article] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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