Abstract
Barbaram (1), a neolactam together with other five known compunds (2–6) was isolated from the EtOAc-soluble fraction of an EtOH extract of the root and stem of Lycium barbarum by using silica gel, Sephadex LH-20 column chromatography and semi-preparative RP-C18 HPLC. Based on HR-TOF-MS, NMR spectral data, quantum chemistry ECD calculations and referencing to the data reported earlier, the structures of these compounds (1–6) were determined, specially including the absolute configuration of the neolactam (1). Compounds 2 and 4 showed significant anti-inflammatory activity in LPS-induced RAW 264.7 macrophages with the IC50 values of 8.98 ± 0.57 μM, 6.68 ± 0.77 μM.
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