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. 2023 Dec 13;17(1):182.
doi: 10.1186/s13065-023-01070-6.

Glycosides from the leaves of Fraxinus Hubeiensis

Affiliations

Glycosides from the leaves of Fraxinus Hubeiensis

Xin-Yi Liu et al. BMC Chem. .

Abstract

Fraxinus hubeiensis is a plant endemic to China and widely used as folk medicine to treat various diseases. However, its chemical constituents have never been reported sufficiently. Thus, the primary objective of this study was to investigate the phytochemical constituents and biological activities of F. hubeiensis leaves. Hence, combined column chromatographic and spectroscopic techniques were used to identify and characterize the secondary metabolites such as a pair of 3-keto-glycoside epimers (1) and (2), along with five known compounds (3 ~ 7). The results of α-glucosidase inhibitory activity exhibited that 1 and 2 had moderate activity with IC50 values of 359.50 and 468.43 µM, respectively, compared to a positive control acarbose with the IC50 value of 164.08 µM. However, Compounds 1-6 were shown to be inactive against the tested microbes.

Keywords: 3-keto-glycoside; Chiral separation; Fraxinus hubeiensis; Spectroscopic analysis; α-glucosidase inhibitory.

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Conflict of interest statement

The authors declare that there are no competing interests to others.

Figures

Fig. 1
Fig. 1
Chemical structures of 1–7 isolated from F. hubeiensis
Fig. 2
Fig. 2
Key 1 H-1 H COSY and HMBC correlations of compounds 1 and 2

References

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