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Two new sesquiterpenoids from the fruits of Alpinia oxyphylla
Weirong Bai1,2, Tuanjie Wang2, Xiaoming Yang3
1College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China.
Abstract:
Two undescribed sesquiterpenoids, including one nor-eudesmane type (1) and one guaiane type (2), together with two known analogues (3-4) have been isolated and identified from the fruits of Alpinia oxyphylla. The structures of these new compounds were elucidated by extensive spectroscopic analyses (1D-, 2D-NMR, HRESIMS, IR, UV) and NMR calculations with DP4+ analysis. The anti-inflammatory activities of all isolates were evaluated by measuring their inhibitory effects on PGE2 production in LPS stimulated RAW 264.7 macrophages.
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