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Two new norneolignans and other components from Strophioblachia fimbricalyx

PHYTOCHEMISTRY LETTERS(2023)

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摘要
Two new norneolignans, fimbricalyxinlignan A (1) and fimbricalyxinlignan B (2), together with other four known compounds (3-6), were isolated from the leaves and stems of Strophioblachia fimbricalyx. Their structures were identified by spectroscopic analyses, including 1D and 2D NMR, HRESIMS and ECD spectra. This is the first report of neolignans from S. fimbricalyx. Furthermore, new compounds with the same planar structure but different configurations can be found by comparing 13C NMR and ECD spectra.
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new norneolignans
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