Isolation and structure of wilfordlonging from Tripterygium wilfordii Hook. f / 药学学报

<p><b>AIM</b>To study the chemical composition of Tripterygirm wilfordii Hook. f.</p><p><b>METHODS</b>Colunm chromatography was used to separate the chemical constituents. UV, IR, MS, HRMS, 1HNMR, 13CNMR (COM and OFR), 1H-1H COSY, 1H-13C COSY, NOESY and COLOC spectra were used to determine the structures of the isolated constituents.</p><p><b>RESULTS</b>Two sesquiterpene alkaloids were isolated and their structures were elucidated as wilforgine and wilfordlongine on the basis of spectral evidence.</p><p><b>CONCLUSION</b>Wilfordclonine is a new sesquiterpene alkaloid.</p>