Two Neolignans Isolated from Hydnocarpus Annamensis Studied by NMR Spectroscopy
广西大风子中2个新木脂素的NMR研究

Two neolignans were isolated from the bark of Hydnocarpus annamensis. Their structures were elucidated using high-resolution ESI mass spectrometry and NMR spectroscopy. The proton and carbon chemical shifts of the two compounds was assigned using 2D NMR experiments, including HSQC, HMBC, DQF-COSY and NOESY. The results of capillary electrophoresis (CE) analysis demonstrated that the two compounds are racemates.