Abstract
Seven flavanol derivatives, including three biflavanoids (1–3), two flavonoids (4 and 5), and two spirobiflavonoids (6 and 7), were isolated from the bark of Nothotsuga longibracteata. The structure of the undescribed compound 1 was elucidated based on HR-ESIMS, NMR spectroscopy, and electronic circular dichroism (ECD) calculations. All isolated flavanol derivatives were screened for their antioxidant capacity to scavenge DPPH and ABTS+.
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Claims 2
Claim · model-written summary
Seven flavanol derivatives (three biflavanoids, two flavonoids and two spirobiflavonoids) were isolated from the bark of Nothotsuga longibracteata.
- Taxon
- Nothotsuga longibracteata
Nothotsuga longibracteatae0 - Organ / stage
- barke0
- Outcome
- Seven flavanol derivativese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seven flavanol derivatives, including three biflavanoids (1–3), two flavonoids (4 and 5), and two spirobiflavonoids (6 and 7), were isolated from the bark of Nothotsuga longibracteata”
Claim · model-written summary
The structure of the previously undescribed compound 1 from Nothotsuga longibracteata was elucidated by HR-ESIMS, NMR spectroscopy and ECD calculations.
- Taxon
- Nothotsuga longibracteataNothotsuga longibracteatat0
- Outcome
- structure of the undescribed compound 1e1
- Qualifier
- HR-ESIMS, NMR spectroscopy, and electronic circular dichroism (ECD) calculationse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Nothotsuga longibracteata”
e1“The structure of the undescribed compound 1 was elucidated based on HR-ESIMS, NMR spectroscopy, and electronic circular dichroism (ECD) calculations”