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[Isolation and structure of wilfordlonging from Tripterygium wilfordii Hook. f]
Sui Lin1, Yuan-chao Li, Nobuko Sakurai
1Fujian Institute of Medical Sciences, Fuzhou 350001, China.
Aim:
To study the chemical composition of Tripterygirm wilfordii Hook. f.
Methods:
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.
Results:
Two sesquiterpene alkaloids were isolated and their structures were elucidated as wilforgine and wilfordlongine on the basis of spectral evidence.
Conclusion:
Wilfordclonine is a new sesquiterpene alkaloid.
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