Abstract
Abstract Phytochemical investigation into the 70 % ethanol extract of Forsythia suspensa leaves afforded the isolation and identification of two new lignan glycosides, Phillyrigeninside B (1) and Phillyrigeninside C (2). The structure of compounds isolated were elucidated via extensive spectroscopy techniques, including ultraviolet (UV), infrared (IR) and Nuclear Magnetic Resonance (NMR). The inhibitory effect against LPS-induced NO production in macrophages and the antibacterial activity were tested for compounds 1–2. The study showed that the two isolated compounds were furofuran lignan glycosides, and exhibited moderate antibacterial and moderate anti-inflammatory activities. The work further confirmed that the leaves of F. suspensa are also a source of furofuran lignan glycosides with important development value and wide application prospect.
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