A new diarylheptanoid glycoside, acutissioside A (4), along with five known diarylheptanoids (1–3, 5, 6) was isolated from the twigs of Quercus acutissima Carruth. The structure of the new compound was determined via spectral analysis, including NMR spectra (1H and 13C NMR, 1H–1H COSY, HSQC, HMBC) and HR-ESI-MS, acid hydrolysis, and specific optical rotation data. The neuroprotective effect of all the diarylheptanoid compounds (1–6) was evaluated. Compound 1 exhibited NGF secretion to 154.60 ± 2.87%, which was stronger than that of the positive control 6-shogaol (140.45 ± 2.18%).
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Acknowledgment
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology [2012R1A5A2A28671860]. We are thankful to the Korea Basic Science Institute (KBSI) for the MS spectra measurements.
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Published in Khimiya Prirodnykh Soedinenii, No. 2, March–April, 2020, pp. 191–194.
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Cha, J.M., Subedi, L., Khan, Z. et al. A New Diarylheptanoid from the Twigs of Quercus Acutissima and their Neuroprotective Activity. Chem Nat Compd 56, 213–216 (2020). https://doi.org/10.1007/s10600-020-02990-8
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DOI: https://doi.org/10.1007/s10600-020-02990-8