A new compound 6-chloroapigenin, C15H9C105, M+ 304, mp 305–306°C, λmax 274, 336 (methanol) has been isolated from the ether-soluble fraction of a methanolic extract of the field horsetail. On the basis of the results of UV and PMR spectroscopy and mass spectrometry, the structure of 6-chloro-4′,5,7-trihydroxyflavone has been established for this compound.
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Syrchina, A.I., Zapesochnaya, G.G., Tyukaykina, N.A. et al. 6-Chloroapigenin fromEquisetum arvense L.. Chem Nat Compd 16, 356–358 (1980). https://doi.org/10.1007/BF00568366
- Sesquiterpene Hydrocarbon
- Equisetum Arvense