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Nine new lignans (1–8, 13) and five known ones (9–12, 14) have been isolated from the roots of Schisandra sphenanthera and were tested for their capacity to scavenge 2,2-diphenyl-1-Picryl-hydrazyl (DPPH). Of these lignans tested, compounds 1, 7, 8 and 13 exhibited noteworthy antioxidant activity with IC 50 values of 92, 115, 35 and 48μg/mL, respectively. The anti-oxidative haemolysis of human...
The systematic isolation of the EtOAc extract from Schisandra sphenanthera fruit was performed during a search for HSV-2 and adenovirus inhibitors. Sixteen lignans were obtained, with compound 1 representing a new and rare type of lignan in the genus Schisandra. Their structures were elucidated by spectroscopy and comparison with literature data. Among all the lignans tested for their antiviral activities,...
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