A pair of new guaiane-type sesquiterpene tautomers () was isolated from rhizomes of . Meanwhile, three pairs of known compounds, including a pair of dihydroflavone glycoside tautomers (), a pair of 4-hydroxybenzoic acid ester glycoside tautomers (), as well as a pair of secoiridoid glycoside tautomers () were isolated from fruits of . Their structures were elucidated by extensive spectroscopic and computational methods. Furthermore, the tautomeric mechanisms were discussed.
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| http://dx.doi.org/10.1080/14786419.2022.2119969 | DOI Listing |
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