Two neolignans were isolated from the bark of Hydnocarpus annamensis.Their structures were elucidated using high-resolution ESI mass spectrometry and NMR spectroscopy.

• 摘要从广西大风子的皮中分离得到两个新木脂素1和2，并通过高分辨质谱和核磁共振确定了其结构。