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  • Title: Alkaloids with neuroprotective effects from the leaves of Isatis indigotica collected in the Anhui Province, China.
    Author: Liu SF, Zhang YY, Zhou L, Lin B, Huang XX, Wang XB, Song SJ.
    Journal: Phytochemistry; 2018 May; 149():132-139. PubMed ID: 29499466.
    Abstract:
    Six undescribed alkaloids, indiforine A-F, together with four known ones, were isolated from the leaves of Isatis indigotica Fortune. Their structures were elucidated on the basis of extensive spectroscopic analyses. The absolute configurations of indiforine A and B were determined by comparison of the experimental and calculated electronic circular dichroism spectra, as well as experimental and calculated optical rotations. The isolated alkaloids were evaluated for their neuroprotective activities against H2O2-induced cell injury in human neuroblastoma SH-SY5Y cells. The results showed that in H2O2-induced SH-SY5Y cell injury models, indiforine A and B exhibited potent neuroprotective activities. Further investigation of the most potent indiforine A by Hoechst 33258 staining and Annexin V/PI analysis demonstrated that it could protect SH-SY5Y cells from oxidative damage through inhibiting cell apoptosis.
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