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Four pair of enantiomeric benzofuran lignans from the fruits of Crataegus pinnatifida bunge

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journal contribution
posted on 25.11.2021, 18:00 by Ding-Ding Zhang, Peng Zhao, Shun-Wang Huang, Shao-Jiang Song, Xiao-Xiao Huang

Phytochemical investigation of the fruits of Crataegus pinnatifida Bunge led to the isolation of four pairs enantiomeric benzofuran lignans (1a/1b4a/4b) including four undescribed compounds (1a, 2b, 3b and 4b). Their structures were determined by extensive spectroscopic methods and the absolute configurations were further determined by the comparison of experimental and calculated ECD spectra. All the enantiomeric lignans were evaluated for their inhibitory activities to tyrosinase. Among them, compound 4a showed moderate inhibition activity (IC50 = 0.54 mM).

Funding

This work was supported by Career Development Support Plan for Young and Middle-aged Teachers in Shenyang Pharmaceutical University (ZQN2018006), Supported by LiaoNing Revitalization Talents Program (XLYC2007180) and Program for Major Scientific and Medical Technology Problems of China Medicine Education Association in 2020 (2020KTS003).

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