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Two styrylpyrone glucosides, 3 -deoxyequisetumpyrone (3,4-hydroxy-6-(4 -hydroxy-E-styryl)-2-pyron-3-O-β-d-glucopyranoside) and 4 -O-methylequisetumpyrone (3,4-hydroxy-6-(3 -hydroxy-4 -methoxy-E-styryl)-2-pyron-3-O-β-d-glucopyra noside) have been isolated from the rhizomes of Equisetum arvense. The structures of the new derivatives were elucidated spectroscopically. These compounds are accumulated...
Equisetum hybrids (Equisetaceae) are known from different localities in the British Isles but have been described so far only on morphological characters. Data on the phenolic constituents (caffeic acid conjugates, flavonoids, styrylpyrones), determined by HPLC and TLC are presented as chemical characters of the hybrids and their sympatric parents. The total detectable profile of phenolics is considered...
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