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Brasesquilignan A-E, Five New Furofurans Lignans from Selaginella braunii Baker
Fei Cheng1,2, Jianping Wu1,3, Yan Zhang1
1Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
Abstract:
Five new furofurans lignans, Brasesquilignan A-E (1-5), were isolated from the aqueous ethanol extract of Selaginella braunii Baker. Their structures were elucidated by extensive analysis of NMR and HRESIMS data. Their absolute configurations were determined by CD spectra, enzymatic hydrolysis, and GCMS analysis. Furthermore, all compounds were evaluated for anti-proliferative activities against various human cancer cellsin vitro. Compounds 2 and 3 exhibited weak inhibitorypotency against five human cancer cells.
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